СИСТЕМА ДЛЯ ПРИЛОЖЕНИЯ ПОНИЖЕННОГО ДАВЛЕНИЯ К ТКАНИ И СИСТЕМА ДЛЯ ПРИЛОЖЕНИЯ ПОНИЖЕННОГО ДАВЛЕНИЯ К МЕСТУ РАСПОЛОЖЕНИЯ ТКАНИ (ВАРИАНТЫ)

Приведено описание усовершенствований конструкции и функциональных возможностей адаптера пониженного давления, используемого для присоединения распределительной магистрали и аппаратуры источника пониженного давления в системе лечения раны пониженным давлением (ЛРПД). Данный адаптер уменьшает количество случаев непредвиденного поступления жидкости во вспомогательные просветы подающей пониженное давление трубки, в то время как указанная жидкость проводится через канавки к основному просвету указанной трубки. 3 н. и 15 з.п. ф-лы, 16 ил.

Системы и способы управления трубками

Группа изобретений относится к медицинской технике. Хирургическая система для обработки ткани из пациента включает контейнер, содержащий: внешнюю стенку, окружающую внутренний объем для содержания ткани; и фильтр для обработки ткани. Устройство управления трубками для трубок, используемых для переноса жидкостей, газов и ткани, содержит пластину для ограничения трубок, имеющую сквозные отверстия для трубок; пластину для стабилизации трубок, имеющую сквозные отверстия для трубок; устройства ограничения потока, расположенные на пластине для ограничения трубок у сквозных отверстий для трубок; и многопозиционный переключатель. Трубки проходят через сквозные отверстия для трубок. Многопозиционный переключатель выполнен с возможностью: в первом положении ограничивать поток в первой подгруппе трубок с помощью устройств ограничения потока для переноса ткани пациента во внутренний объем контейнера, во втором положении - ограничивать поток во второй подгруппе трубок с помощью устройств ограничения ...

СИСТЕМА ДЛЯ СТИМУЛИРОВАНИЯ ЗАЖИВЛЕНИЯ ТКАНИ (ВАРИАНТЫ)

Изобретение относится к медицине и предназначено для терапии открытых ран. Система содержит пористую мягкую прокладку, позиционируемую в раневой полости, и воздухонепроницаемый перевязочный материал, закрепленный поверх мягкой прокладки так, чтобы обеспечивать воздухонепроницаемое уплотнение к раневой полости. Проксимальный конец трубопровода соединен с перевязочным материалом. Периферический конец трубопровода соединен с источником отрицательного давления. Фильтрующая поглотительная коробка расположена вдоль трубопровода. Первый гидрофобный фильтр расположен у отверстия фильтрующей поглотительной коробки. Второй гидрофобный фильтр расположен между первым фильтром и источником отрицательного давления. Фильтр для отфильтровывания запахов установлен между первым и вторым гидрофобными фильтрами. Варианты системы отличаются средствами крепления кожуха к стационарному объекту, средствами автоматического управления давлением и частотой откалывания раны. Технический результат состоит в обеспечении ...

MEDICAL INSTRUMENT

FLUID AND BIO AEROSOL HANDLING

COLLECTOR FOR USE WITH A RIVER MEASURER CONTROL SYSTEM

THERAPY DEVICE FOR WOUNDS

SYSTEM TO PHAKOEMULSIFIKATION WITH VACCUM PUMPS

DEVICE TO WUNDBEHANDLUNG

COLLECTOR FOR USE WITH A RIVER MEASURER CONTROL SYSTEM

REFLUX CONTROL IN A MICRO-SURGICAL SYSTEM

EXAMINATION OF A PRESSURE SENSOR IN AN OPERATION CARTRIDGE

SYSTEM TO WUNDDRAINAGE WITH PROTECTION AGAINST PAYING.

DEVICE FOR SUCKING OFF WUNDFLUESSIGKEITEN.

NEGATIVE PRESSURE COLLECTOR.

PRESSURE TRANSDUCER - INTERFACE

NEGATIVE PRESSURE REGULATION VALVE

DEVICE TO THE COMPUTER-CONTROLLED INTELLIGENT ONE PHACOEMULSIFIKATION

SUCTION PRESSURE CONTROL VALVE WITH BELLOWS AS WELL AS VORRRICHTUNG AND SYSTEM TO THE DRAINAGE OF A BODY CONCAVITY

CAN

SURGICAL SYSTEM WITH LIQUID RETURN

Negative pressure wound therapy system using eulerian video magnification

Embodiments of tissue monitoring in combination with negative pressure wound therapy systems and methods are disclosed. In some embodiments, a monitoring and therapy system comprises collecting video images of a tissue site and amplifying said video images via Eulerian Video Magnification. Depending upon the changes detected via Eulerian Video magnification, negative pressure wound therapy may be delivered to the tissue site, stopped, or altered in some manner.

Leak-resistant bandage systems and methods with hydrophilic foam wound insert for fluid-instillation and/or negative-pressure wound therapies

Wound treatment systems and methods (e.g., having hydrophilic wound inserts), such as for negative-pressure and/or fluid-installation wound therapies. Some embodiments include a check-valve assembly between a wound dressing and a vacuum source. WO 2011/090996 PCT/US2011/021665 r100 108--\_ 112 ...

Negative pressure wound therapy apparatus and methods

Systems and methods for controlling a pump system for use in negative pressure wound therapy are described herein. In some embodiments, a method for controlling a pump system includes applying a drive signal to a pump assembly of the pump system, the drive signal alternating between a positive amplitude and a negative amplitude and the drive signal having an offset, and sampling a pressure within a fluid flow path configured to connect the pump system to a wound dressing configured to be placed over a wound during one or more time intervals. Each of the one or more time intervals can occur when the drive signal is approximately at an amplitude equal to one or more sampling amplitudes.

Selectively moveable valve elements for aspiration and irrigation circuits

Various arrangements of fluidics systems are disclosed. In one arrangement, an aspiration circuit for a fluidics system is disclosed that selectively controls aspiration. The aspiration circuit comprises an aspiration line operatively connected to a surgical instrument, an aspiration exhaust line operatively connected to a waste receptacle; an aspiration vent line connected at a first end to the aspiration line; and a selectively variable vent valve operatively connected to the aspiration vent line. The variable vent valve may be selectively moved to vary aspiration pressure within the aspiration line. Other fluidics systems are disclosed that include a selectively positionable irrigation valve that may also be incorporated into a fluidics system that includes a variable vent valve.

Method for providing negative pressure to a negative pressure wound therapy bandage

A method for providing a negative pressure wherein a pump is cycled on and off to achieve a target negative pressure, which is set slightly lower than the therapeutic negative pressure. A device determines the actual pressure by averaging samples which may occur at a different rate than the pump cycle.

Reduced-pressure systems, methods, and devices for simultaneously treating a plurality of tissue sites

Systems and methods for treating a plurality of tissue sites include a multi-port therapy unit. The multi-port therapy unit includes a plurality of patient-side ports each fluidly coupled to a plurality of conduits and a fluid reservoir fluidly coupled to the plurality of ports. A plurality of pressure sensors are associated with the plurality of patient-side ports to determining a pressure associated with each conduit. A controller is operatively coupled to the plurality of pressure sensors to receive treatment pressure data, monitor pressure for each pressure sensor of the plurality of pressure sensors, and signal an alarm condition if the pressure is outside of a pre-selected range. The system includes a reduced-pressure source fluidly coupled to a dressing at each tissue site through the multi-port therapy unit.

Systems and methods for delivering fluid to a wound therapy dressing

Provided are systems and methods for delivery of fluid to a wound therapy dressing. In exemplary embodiments, a pressure source provides negative pressure to a wound dressing and a biasing mechanism provides positive pressure to a fluid reservoir.

NON-LINEAR FLOW RESTRICTOR FOR A MEDICAL ASPIRATION SYSTEM

A non-linear flow restrictor that limits the maximum flowrate in a medical aspiration system. The flow restrictor changes the direction of fluid flow to generate non-linear effects in the fluid. This creates a non-linear relationship between the pressure within the system and the flowrate of the fluid. The non-linear relationship may define a pressure versus flowrate curve that has a flat portion where the flowrate does not increase with an increase in pressure.

PERISTALTIC PUMP FITMENT FOR ATTACHMENT TO AN ASPIRANT COLLECTION BAG

The fitment is an elongated connector providing a conduit for aspirant to flow from a pump cartridge to an interior of the collection bag. The connector has a first end configured for attachment to the pump cartridge and a second end for positioning within the interior of the collection bag. The second end also includes at least one notch formed in the connector. The notch acts to prevent the collection bag from sealing off the conduit during surgery so that a sufficient amount of air will remain within the bag to allow a surgeon to air vent an aspiration path during surgery.

DEVICE AND METHOD FOR TREATMENT OF SURFACE INFECTIONS WITH NITRIC OXIDE

A device for the topical delivery of nitric oxide gas to an infected area of skin includes a source of nitric oxide gas (8), a bathing unit (6), a flow control valve (22), and a vacuum unit (10). The bathing unit (6) is adapted to surround the area of the infected skin and form a substantially air-tight seal with the skin surface. The bathing unit (6) is also in fluidic communication with the source of nitric oxide (8). The flow control valve is in position downstream of the source of nitric oxide (8) and upstream of the bathing unit (6). The flow control valve (22) controls the amount of nitric oxide gas that is delivered to the bathing unit(6). The vacuum unit (10) is positioned downstream of the bathing unit (6) and is used to withdraw gas from the bathing unit (6). Application of nitric oxide gas to the infected area of skin reduces pathogen levels in the infected area and promotes the healing process.

IMPLANTABLE CEREBRAL SPINAL FLUID DRAINAGE DEVICE AND METHOD OF DRAINING CEREBRAL SPINAL FLUID

REFLUX CONTROL IN MICROSURGICAL SYSTEM

An improved method of controlling reflux in a microsurgical system involving monitoring reflux pressure over time to detect occlusion break.

ASPIRATION CONTROL

... ²²²A microsurgical system capable of controlling aspiration via a vacuum control ²mode, a suction control mode, or a flow control mode.² ...

SUCTIONING SYSTEM, METHOD AND KIT

A suction head in fluid communication with a pump head (414) provides a sub- ambient working pressure to a target area, enabling drainage thereof to a waste container. A passive pressure regulation system (135) enables the working pressure to be maintained at a desired level. A monitoring system for a suction system is also provided.

ASPIRATION FLOW RESISTOR

An aspiration flow resistor (10) includes an inlet (12) and an outlet (14). A housing (16) is connected to the inlet (12) and outlet (14). A series of spaced walls (18) are disposed between the inlet (12) and the outlet (14). The walls (18) and the inlet (12) and the outlet (14) together with the housing (16) define a plurality of aspiration flow chambers (22). As aspirant flows from the inlet (12) to the outlet (14), a pressure decrease in the aspirant flow occurs at each wall (18) to provide resistance to aspirant flow.

TURBINE FLUID FLOW RESISTOR

A fluid flow resistor (10) for use in ophthalmic surgery includes a housing (12) having an inlet (14) and an outlet (16). An alongated turbine (22) is caused to spin within the housing (12) by a flow of fluid which extracts energy from the fluid flow and effectively increases a resistance to fluid flow from the inlet (14) to the outlet (16).

SELF CONTAINED WOUND DRESSING APPARATUS

IMPLANTABLE FLUID EXTRACTION SYSTEM

A fluid extraction implantable system shaped and sized to be implanted in a patient, including: a fluid extraction chamber having a flat and thin shape connected to a draining tube and including at least one external flat surface, wherein the at least one external flat surface is configured to be attached to a tissue surface when a negative pressure is applied on the draining tube, wherein the chamber extracts fluids from the tissue by applying the negative pressure through the flat surface on the attached tissue surface.

SELF CONTAINED WOUND DRESSING APPARATUS

The composite wound dressing apparatus promotes healing of a wound via the use of an external peristaltic vacuum pump. The external peristaltic pump applies a vacuum pressure to the wound to effectively draw wound fluid or exudate away from the wound bed. The external peristaltic pump is tethered to the wound dressing and is portable, preferably, carried by the patient in a support bag, which permits patient mobility. Moreover, the patient does not need to be constrained for any period of time while exudate is being removed from the wound.

REDUCED-PRESSURE TREATMENT SYSTEMS WITH RESERVOIR CONTROL

A reduced-pressure system for delivering reduced pressure for medical purposes to a desired site and to receive fluids in one instance includes a reservoir having an interior space operable to contain the fluids. A reduced-pressure delivery conduit is placed in fluid communication with the interior space for delivering the reduced pressure to the desired site. A source conduit and a pressure sensor conduit are placed in fluid communication with the interior space. A pressure sensor is placed in fluid communication with the pressure sensor conduit. A reduced-pressure source is placed in fluid communication with the source conduit. A reduced- pressure control unit is associated with the pressure sensor and the reduced-pressure source and is operable to receive pressure data from the pressure sensor and supply data from the reduced- pressure source and to determine when a reservoir-full/blockage condition exists. Other systems and methods are presented.

EVAPORATIVE BODY-FLUID CONTAINERS AND METHODS

Body-fluid containers, methods, and systems are presented that include a container that has a container housing formed, at least in part, by a liquid-impermeable, vapor-permeable material. The liquid-impermeable, vapor-permeable material allows water to evaporate and be transmitted outside of the container. The evaporation allows more fluid to be processed by the container than the container could otherwise hold. Other systems, methods, and apparatuses are presented.

WOUND EXUDATE SYSTEM ACCESSORY

A stand-alone system for assessing wound exudates from the wound of a patient is described. The system contains functionality to detect, process and report various wound parameters. The system also may make treatment determinations based on these findings. The system may detect one or more physiological values of the wound exudates from the wound of the patient. The system may also compare detected physiological values to predetermined physiological values, in order to obtain a comparison result in real time. The system may include a processor (15) which provides an electronic signal based on the comparison result in which the electronic signal may corresponds to guidelines for treating the wound (3). The system described may be an accessory, which may be used on its own, or in conjunction with other wound treatment devices (9).

ELECTRICAL MEDICAL VACUUM REGULATOR

ELECTRICAL MEDICAL VACUUM REGULATOR A medical vacuum regulator (10) with a solenoid regulating valve (20) and a comparator (22) for electrically, automatically controlling the solenoid regulating valve (20) to intermittently open and close to achieve a preselected regulated vacuum (v) which is continuously provided or in intermittent mode decreases during a relaxation period (35) to atmosphere (30) and automatically increases during a ramp period (29) of a vacuum cycle (21 ) to prevent vacuum surge traumato a patient (14). The regulating valve (20), in addition to regulating the vacuum during the vacuum cycle (21), continuously vents the system to atmosphere (30) when a patient venting solenoid valve (48) vents the patient (14) to atmosphere (30) to reduce the load on a vacuum pump (12). The continuous and intermittent modes of operation are selected by a mode selection circuit (36) with means for maintaining it in its selected state during a period of temporary power loss.

PRESSURE TRANSDUCER INTERFACE

... 2136640 9324817 PCTABS00028 A pressure measurement system includes a diaphragm (12) and a chamber (30) for exposing one side of the diaphragm to a fluid. A force transducer (14) is provided for measuring force exerted by the fluid on the one side of the diaphragm independent of diaphragm position. A ferromagnetic plate (16) is attached to the diaphragm (12) to enable removable coupling of the diaphragm (12) to a magnet (18) permanently attached to the force transducer (14).

ATTACHMENT FOR TRACHEA LAB AUGUST PUMP.

KUERETTE.

Chest Drainage Apparatus.

Eine Thoraxdrainagevorrichtung zur Absaugung von Fluiden aus einem Pleuraspalt eines Patienten mittels Unterdruck weist einen Fluidsammelbehälter (3) zum Sammeln der abgesaugten Fluide und einen Drainageschlauch (4) zur Verbindung des Fluidsammelbehälters (3) mit dem Pleuraspalt (P) des Patienten auf. Der Fluidsammelbehälter (3) ist mit einer Vakuumquelle (1) verbindbar, um einen Unterdruck im Fluidsammelbehälter (3) zu erzeugen. Die Thoraxdrainagevorrichtung weist eine einstellbare Einrichtung (5) zur Dämpfung von Druckdifferenzen während der Atmung des Patienten auf, wobei diese Einrichtung (5) unabhängig von einer Saugleistung der Vakuumquelle (1) einstellbar ist. Diese Vorrichtung ermöglicht ein schrittweises Dehnen der Lunge ohne Verletzungsgefahr und bereitet somit die Lunge auf die Beendigung der Drainage vor.

Ophthalmic surgical system.

Die Erfindung betrifft ein ophthalmochirurgisches System (100), welches aufweist: – eine Konsole (1) zur Aufnahme eines Irrigationsfluidbehälters (2) mit Irrigationsfluid (3), – eine in die Konsole einsetzbare Kassette (4) zur Steuerung des Irrigationsfluides zu einem chirurgischen Instrument (5) für ein zu behandelndes Auge (6), – einen Irrigationsfluid-Strömungspfad (8) von dem Irrigationsfluidbehälter zu der Kassette und zu dem chirurgischen Instrument, – eine erste Fluidpumpe (10), welche eine erste Pumpkammer (11) mit einem ersten Volumen und eine mit einem ersten elastischen Trennelement (12) davon getrennte erste Antriebskammer (13) mit einem zweiten Volumen aufweist, – eine parallel zur ersten Fluidpumpe angeordnete zweite Fluidpumpe (20), welche eine zweite Pumpkammer (21) mit einem dritten Volumen und eine mit einem zweiten elastischen Trennelement (22) davon getrennte zweite Antriebskammer (23) mit einem vierten Volumen aufweist, wobei das erste Volumen oder das dritte Volumen ...

Powered breastpump.

Bei einer Muttermilchpumpe (1) mit einer Steuerung, einem Antriebsmotor (5), einer Antriebsübertragung (6), zwei Kolben-Zylindereinheiten (8), zwei je an eine Brust ansetzbaren Absaugvorrichtungen (14) und mit zwei je eine Kolben-Zylindereinheit (8) mit einer Absaugvorrichtung (14) verbindenden pneumatischen Übertragungs-Leitungen (13) überträgt die Antriebsübertragung (6) eine Drehbewegung einer Welle (5a) des Antriebsmotors (5) auf Vor- und Rückbewegungen der Kolben relativ zu den Zylindern, so dass periodische Druckverläufe über die Übertragungs-Leitungen (13) an die Absaugvorrichtungen (14) übertragen werden. An den beiden Übertragungs-Leitungen (13) sind je ein von der Steuerung (4) verstellbares Unterdruck-Begrenzungsventil (19) und je ein Überdruckventil (18) angeordnet. Mit den Ventilen (18, 19) können die von den Kolben-Zylindereinheiten (8) erzeugten Druckverläufe auf gewünschte Druckbereiche eingeschränkt werden. Die Muttermilchpumpe ist einfach aufgebaut und für alle bekannten ...

Controlling mean, in particular f�r a mother's milk suction mechanism.

Equipment for sucking off lens rubble with eye-surgical Qatar act operations.

Plug-in connection, in particular for suction apparatuses.

Device for the thorax drainage.

Es werden eine Vorrichtung und ein Verfahren für die Thoraxdrainage bei einem Patienten mit einer Luftfistel vorgeschlagen. Dabei wird im Pleuraraum des Patienten mittels einer Saugeinrichtung ein Vakuum erzeugt. Um die Einstellung des Vakuums anhand objektiver Kriterien vorzunehmen, wird vorgeschlagen, ein geeignetes Grössenmass für die Luftfistel zu bestimmen und das von der Saugeinrichtung erzeugte Vakuum in Abhängigkeit von diesem Grössenmass zu regeln. Insbesondere wird ein adaptiver Algorithmus vorgeschlagen, der die folgenden Schritte aufweist: (a) Ermitteln eines ersten Wertes eines Grössenmasses für die Luftfistel (Schritt 33); (b) Verändern des Vakuums um einen ersten Differenzwert (Schritt 36); (c) Ermitteln eines zweiten Wertes des Grössenmasses nach einer ersten Wartezeit (Schritt 38); (d) Verändern des Vakuums um einen zweiten Differenzwert mit umgekehrtem Vorzeichen, falls das zweite Mass grösser als das erste Mass ist (Schritt 40); (e) Wiederholen der Schritte (a)(d) nach ...

DRAINAGE HOSE DEVICE AND COUPLING UNIT.

Eine Drainageschlauchvorrichtung zum Absaugen von Flüssigkeiten aus einem menschlichen oder tierischen Körper, weist auf eine Kupplungseinheit mit einem ersten und einem zweiten Kupplungsteil, welche miteinander fluiddicht verbindbar sind, ein erstes Ventil (42), welches im ersten Kupplungsteil angeordnet ist und einen Drainageschlauch mit einem patientenseitigen Ende, welches im zweiten Kupplungsteil gehalten ist. Der Drainageschlauch ist mehrlumig ausgebildet und weist eine Drainageleitung (10) und mindestens eine Zusatzleitung (11) auf. Diese Drainageleitung (10) und mindestens eine der genannten Zusatzleitungen (11) stehen miteinander an ihrem patientenseitigen Ende innerhalb des zweiten Kupplungsteils in fluidkommunizierender Verbindung. Die Drainageschlauchvorrichtung weist ferner ein zweites Ventil (2) auf, welches im zweiten Kupplungsteil angeordnet ist und welches die Drainageleitung (10) öffnet und verschliesst. Die Drainageschlauchvorrichtung und die erfindungsgemässe Kupplungseinheit ...

УСТРОЙСТВО ДЛЯ ОБРАБОТКИ РАНЫ (ВАРИАНТЫ), УСТРОЙСТВО ДЛЯ СТАЗА И ИЗОЛЯЦИИ, СПОСОБ ОБЕСПЕЧЕНИЯ СТАЗА И ИЗОЛЯЦИИ РАНЫ

Устройство для обработки ран состоит из: пористого перевязочного материала; канистры, соединенной с пористым перевязочным материалом; первого клапана, установленного между пористым перевязочным материалом и канистрой, который можно переключать в открытое положение, чтобы разрешить движение потока жидкости, и в закрытое положение, чтобы перекрыть движение потока жидкости между пористым перевязочным материалом и канистрой; отводящей линии, соединенной с канистрой; второго клапана, установленного в отводящей линии, который можно переключать в открытое положение, чтобы разрешить движение потока жидкости, и в закрытое положение, чтобы прекратить движение потока жидкости по отводящей линии; и насоса, который соединен с канистрой и удаляет эксудат из пористого перевязочного материала в канистру, когда первый клапан открыт, а второй клапан закрыт. Кроме того, насос может удалять эксудат из канистры в отводящую линию, когда первый клапан закрыт, а второй клапан открыт. Устройство для стаза и изоляции ...

Negative pressure wound therapy apparatus and methods

Systems and methods for applying reduced pressure therapy

Negative pressure device

A method and apparatus are disclosed for providing negative pressure at a wound site. The apparatus includes a suction pump for generating negative pressure, a negative pressure reservoir, a valve element arranged to selectively provide a fluid communication path between the reservoir and the wound site while a negative pressure in the negative pressure reservoir is greater than a threshold negative pressure, to thereby provide a desired negative pressure at the wound site, and wherein in response to a pressure in the negative pressure reservoir decreasing to the threshold negative pressure, the' suction pump is operable to re-establish an initial negative pressure in the negative pressure reservoir.

Negative pressure wound treatment system capable of detecting air leakage rate

The invention discloses a negative pressure wound treatment system capable of detecting an air leakage rate, which comprises a liquid-collecting bottle, negative pressure wound treatment equipment, a wound kit and an exudate volume detection unit, wherein the liquid-collecting bottle collects wound exudates; the negative pressure wound treatment equipment consists of a negative pressure source and a controller; the wound kit fills and seals a wound and is communicated with the liquid-collecting bottle through a connecting conduit; the exudate volume detection unit detects the volume of the wound exudates in the liquid-collecting bottle; and the controller calculates the air leakage rate according to the volume of the wound exudates, environmental temperature and a negative pressure variable quantity of the negative pressure source. The negative pressure wound treatment system capable of detecting the air leakage rate can measure the current air leakage rate so that a medical worker or a ...

System and method for locating fluid leaks at a drape of a reduced pressure delivery system

A system and method for performing tissue therapy may include applying a reduced pressure to a tissue site of a patient. A fluid parameter associated with applying a reduced pressure to the tissue site may be sensed. An audible fluid leak location sound may be generated in response to sensing the fluid parameter. The audible fluid leak location sound maybe altered in response to sensing that the fluid parameter changes. By altering the audible fluid leak location sound in response to sensing a change of the fluid parameter, a clinician may detect location of a fluid leak at the drape by applying force to the drape. The force applied to the drape may be a clinician pressing a finger onto an edge of the drape.

Silent effusion removal

Vacuum assisted tissue treatment system

Drainage device for the treatment of wounds with application of a vacuum

To provide an assist grip capable of securing easily the desired gripping margin and assuring excellent design quality. The assist grip 1 is equipped with a grip body 3 having a mounting member 2a attached to a vehicle side member 92, a gripping part 30 for the driver etc. to grip at the time of service, and a base 31a continued to the gripping part 30 and a coupling part 6a having a sliding member 5a slidable relative to the base 31a and a swinging member 4a swingable with respect to the sliding member 5a and the mounting member 2a and capable of changing over the grip body 3 between the accommodating position and the service position where the base 31a protrudes with respect to the accommodating position from the mounting member 2a toward inside of the cabin.

VACUUM SWITCHGEAR WITH DETECTION AND AUTOPILOT CAPILLARY RISE OF PRESSURE

Constant vacuum vacuum regulator

APPARATUS OF SURGICAL DRAINAGE, DEVICE PRESSURE REDUCER OF NEGATIVE PRESSURE AND REGULATING DEVICE Of ASPIRATION FOR THIS APPARATUS

ACTUATOR FOR SYSTEM OF TREATMENT OF WOUND BY NEGATIVE PRESSURE

VACUUM DISTRIBUTION PLANT WITH DETECTING AND AUTOPILOT REMONTEES OF PRESSURE

PRESSURE REGULATOR FOR MEDICAL TREATMENT DEVICE NEGATIVE PRESSURE

Régulateur de pression (100) et dispositif médical de traitement par pression négative (10) comprenant un tel régulateur. Le régulateur (100) comprend une première chambre (101) de pression négative non-régulée en communication avec une source de vide, une deuxième chambre (102) de pression négative régulée en communication avec une zone de traitement, et une soupape (150) pour mettre en communication contrôlée les première et deuxième chambres (101, 102) et, ainsi, réguler la pression dans la deuxième chambre (102). Le régulateur comprend une première prise (200) au niveau de laquelle se situe le premier orifice (101A), la première prise (200) étant configurée pour s'engager directement avec une deuxième prise (250) de forme complémentaire équipant la source de vide, de manière à mettre le régulateur (100) et la source de vide en communication.

Mini vacuum reducer adjusted to a fixed value for medical use

MEDICAL/SURGICAL WASTE COLLECTION AND DISPOSAL SYSTEM INCLUDING A ROVER AND A DOCKER, THE DOCKER HAVING FEATURES FACILITATING THE ALIGNMENT OF THE DOCKER WITH THE ROVER

MANUALLY-ACTUATED REDUCED PRESSURE PUMP HAVING REGULATED PRESSURE CAPABILITIES

A SYSTEM AND METHOD FOR DELIVERING REDUCED PRESSURE TO SUBCUTANEOUS TISSUE

PERISTALTIC PUMP FITMENT FOR ATTACHMENT TO AN ASPIRANT COLLECTION BAG

The fitment is an elongated connector providing a conduit for aspirant to flow from a pump cartridge to an interior of the collection bag. The connector has a first end configured for attachment to the pump cartridge and a second end for positioning within the interior of the collection bag. The second end also includes at least one notch formed in the connector. The notch acts to prevent the collection bag from sealing off the conduit during surgery so that a sufficient amount of air will remain within the bag to allow a surgeon to air vent an aspiration path during surgery. © KIPO & WIPO 2007 ...

Device for application of therapy of negative pressure to a wound

reduced pressure system, a method of regulating a therapeutic pressure in a reduced pressure therapy, and feedback system for monitoring the therapy application of reduced pressure by a reduced pressure therapy system

drainage device or fluid delivery to the treatment site

System of stimulation of the fabric cure

MEASURING PRESSURE

A method and apparatus are disclosed for determining a negative pressure generated by a suction pump of a topical negative pressure (TNP) system. The method includes the steps of disconnecting a drive voltage from a pump of the TNP system, determining an EMF generated by a free-wheeling element of the pump, selecting a new drive voltage for the pump and reconnecting the new drive voltage to the pump.

METHODS, COMPOSITIONS AND APPARATUSES TO TREAT WOUNDS WITH PRESSURES ALTERED FROM ATMOSPHERIC

The invention disclosed comprises methods, apparatuses and compositions to treat acute and chronic wounds with pressures altered from atmospheric. The methods, apparatuses and compositions herein improve the performance of Altered Pressure wound therapy. The improvements also make the treatments more comfortable for the patient and the delivery of the treatment more convenient for clinicians These improvements collectively result in improved efficacy, improved compliance, improved safety and improved clinical efficiency, while limiting clinical errors in treatment.

A SYSTEM AND METHOD FOR COLLECTING EXUDATES

A reduced pressure treatment system includes a porous pad positioned at a tissue site and a canister having a collection chamber, an inlet, and an outlet. The inlet is fluidly connected to the porous pad. A reduced pressure source is fluidly connected to the outlet of the canister such that fluid from the tissue site may be drawn into the collection chamber. A hydrophobic filter is positioned adjacent the outlet to prevent liquid from exiting the collection chamber through the outlet. A baffle is positioned within the canister to create a tortuous path between the inlet and the outlet to prevent premature blocking of the hydrophobic filter.

AUTOMATIC FEEDING/PHLEGM EXTRACTOR DEVICE

An automatic feeding/phlegm extractor device is composed of a gavage needle or a phlegm extractor, an air pump, a liquid food supply can or an oxygen /water supply unit, a three-way valve, a forced feeding tube or a phlegm extracting tube, a controller and a detector element, wherein the three-way valve contains three branch passages which are respectively communicated with the liquid food supply can (oxygen / water supply unit), the gavage needle (phlegm extractor), and the forced feeding tube (phlegm extracting tube).

ADAPTIVE ALGORITHM FOR THORACIC DRAINAGE THERAPY

The invention relates to devices and to methods for thoracic drainage for a patient having an air fistula. According to the invention, a vacuum is produced in the pleural cavity of the patient by means of a suction device. In order to adjust the vacuum on the basis of objective criteria, a suitable size measure for the air fistula is determined and the vacuum produced by the suction device is controlled according to said size measure. In particular, the invention relates to an adaptive algorithm having the following steps: (a) determining a first value of a size measure for the air fistula (step 33); (b) changing the vacuum by a first difference value (step 36); (c) determining a second value of the size measure after a first waiting period (step 38); (d) changing the vacuum by a second difference value having the opposite sign if the second measure is greater than the first measure (step 40); (e) repeating steps (a) to (d) after a second waiting period.

WOUND CONNECTION PAD WITH PNEUMATIC CONNECTION CONFIRMATION ABILITY

A system, apparatus, and method for treating a tissue site with reduced pressure includes a connector having a connector body. The connector body includes a cavity and a cavity aperture. The connector also includes a conduit port fluidly coupling a conduit to the cavity. The connector further includes a base adjacent the cavity aperture that is configured to be positioned adjacent a drape. The cavity is configured to be fluidly coupled to a manifold through an aperture of the drape. The connector also includes a sensing probe having a proximal end configured to be fluidly coupled to the conduit and a distal end extending to the cavity aperture. The distal end is configured to be positioned adjacent to and in fluid communication with a manifold.

URINE DRAINAGE DEVICE, DRAINAGE CONTROL DEVICE, DRAINAGE CONTROL SYSTEM AND VOIDING METHOD

A urine drainage device, drainage control device, drainage control system and voiding method, the urine drainage device comprising a urine inlet (31), a urine outlet (32) and a bionic bladder unit (2); the bionic bladder unit (2) comprises a main body component (21) forming a urine storage cavity (215), the urine storage cavity (215) is connected to the urine inlet (31) and the urine outlet (32) via a connecting tube (216); and further comprising a first pressure sensing surface (211) and a second pressure sensing surface (213) deforming with the change of the urine pressure in the urine storage cavity (215); a lower connecting tube (216a) is provided with a first action area (212) and a second action area (214) thereon where external forces can be applied; when external forces are applied on the two action areas (212, 214) simultaneously, the communication between the urine storage cavity (215) and the urine outlet (32) is shut off; and when any one external force applied on the action ...

SYSTEM AND METHOD FOR MANAGING REDUCED PRESSURE DELIVERED TO A TISSUE SITE

The illustrative embodiments described herein are directed to an apparatus and method for managing reduced pressure at a tissue site. The apparatus comprises a pump for supplying reduced pressure for application of reduced pressure to the tissue site and a motor coupled to the pump to propel the pump. The apparatus further comprises a drive system electrically coupled to the motor that includes a power source that provides a source of direct current power to the motor during an operational period at a substantially constant current and of sufficient magnitude to supply a targeted reduced pressure during the operational period. The drive system also includes a controller that monitors the pump's loading on the motor by measuring the voltage across the motor to determine whether the motor voltage remains within a predetermined operational range of voltages necessary for maintaining the reduced pressure supplied by the pump proximate to the targeted reduced pressure without directly measuring ...

MEASURING PRESSURE

A method and apparatus are disclosed for determining a negative pressure generated by a suction pump of a topical negative pressure (TNP) system. The method includes the steps of disconnecting a drive voltage from a pump of the TNP system, determining an EMF generated by a free-wheeling element of the pump, selecting a new drive voltage for the pump and reconnecting the new drive voltage to the pump.

ADJUSTABLE FLUID FLOW RESISTOR CASSETTE

An adjustable fluid flow resistor cassette (10) for use in ophthalmic surgery, includes a housing (12). A set of path restrictors (24) are disposed within the housing (12), and the restrictors (24) cooperate to vary a fluid flow path length from an inlet (16) to an outlet (18).

CONTROL OF VACUUM LEVEL RATE OF CHANGE

A wound treatment apparatus (10) has a vacuum bandage (28) covering a wound (22) of a patient, a vacuum source (110) coupled to the vacuum bandage (28), and a controller (20) that operates the vacuum source (110) to apply negative pressure to the wound (22) through the bandage (28) in a controlled manner. The controller (20) is programmed to limit the rate of change of the negative pressure applied to the wound (22). A caregiver has the ability to change one or more negative pressure setpoint values and the controller (20) of the wound treatment apparatus (10) controls the rate of change of the negative pressure to reduce patient discomfort.

INNOVATIVE PUMPING SYSTEM FOR PERISTAL PUMPS

The invention is a relatively thin wall extruded tubing that in different forms can provide flow regulation for peristaltic pumps, reduce spallation, extend pumping life, provide means to measure inlet and outlet pressure of the peristaltic pump and limits the inlet and outlet pressure generated by peristaltic pumps. A special peristaltic pump designed to take advantage of the unique characteristics of the thin walled tubing forms the new pumping system. The invention has particular usefulness in the medical industry for pumping physiological or nutritional liquids.

COLLECTION RESERVOIR FOR USE WITH FLOW METER CONTROL SYSTEM

A collection reservoir 54 includes a rigid-walled cassette adapted for connection to aspiration tubing 50. The cassette also includes a pair of electrodes 36 positioned so that the electrodes are electrically connectable to a flow meter 34. In operation, the electrodes are exposed to the fluid and tissue being aspirated from the surgical site so that the flow meter indicates a flow rate of the fluid and tissue from the surgical site.

Closed Sterile Drainage Device

The present invention relates to a closed drainage device (1) comprising: a pre-evacuated chamber (2); a drainage tube (3) connecting the pre-evacuated chamber (2) to a needle (4); and a clamp (5) attached to the connecting tube (3), wherein the clamp (5) is in a first position that maintains the vacuum of the pre-evacuated chamber and has a second position that does not maintain the vacuum of the pre-evacuated chamber.

Ultrasonic surgical system

An ultrasonic surgical system enables connection of a hand switch as well as a foot switch, which is used to operate a driving signal generator, without the necessity of retrofitting a main unit including the driving signal generator used to drive an ultrasonic transducer incorporated in a connected handpiece. An extension unit is included for connecting the foot switch and hand switch to the main unit. The foot switch and hand switch are connected to the main unit via the extension unit.

SUCTION DEVICE FOR SURGICAL INSTRUMENTS

A suction device is shown and described. The suction device includes a body, an input port configured to receive a flow of matter, a suction port, and a suction lumen that couples the suction port to the input port. In some embodiments the suction device is configured to couple with a surgical instrument for use in a surgical procedure.

Aspiration Catheter

The invention relates to an aspiration catheter (1) for the extraction of thrombotic material from blood vessels, with a first (3) and a second lumen (6), wherein the first lumen (3) is distally provided with an aspiration opening (5) and the second lumen (6) of smaller cross section than the first lumen (3) and extending coaxially in the distal region (2) of the first lumen (3) being provided with a lateral (7) as well as distally located opening (8), said lateral opening (7) reaching through the wall of the catheter. Within the first lumen (3) a stabilization wire (11) is movably arranged which terminates distally of the lateral opening (7) of the second lumen (6) but proximally of the aspiration opening (5) of the first lumen (3).

Аdjustаblе оvеrlау rеduсеd prеssurе wоund trеаtmеnt sуstеm

А rеduсеd prеssurе trеаtmеnt аppliаnсе is prоvidеd fоr trеаting а wоund оn thе bоdу оf а pаtiеnt. In sоmе еmbоdimеnts, thе аppliаnсе соmprisеs аn оvеrlау, whiсh is furthеr соmprisеd оf сup mеmbеrs thаt mау bе dеtасhеd оr сut аwау frоm thе оvеrlау sо thаt thе оvеrlау саn bе аdjustеd in sizе аnd shаpе. Аlsо, in sоmе еmbоdimеnts, thе оvеrlау is furthеr соmprisеd оf а prеssurе vеnting vаlvе tо mаintаin а prеdеtеrminеd lеvеl оf rеduсеd prеssurе аt thе sitе оf thе wоund. In оthеr еmbоdimеnts, thе wоund trеаtmеnt аppliаnсе аlsо inсludеs а vасuum sуstеm tо supplу rеduсеd prеssurе tо thе sitе оf thе wоund in thе vоlumе undеr thе оvеrlау. In уеt оthеr еmbоdimеnts, thе trеаtmеnt аppliаnсе аlsо inсludеs wоund pасking mеаns tо prеvеnt оvеrgrоwth оf thе wоund оr tо еnсоurаgе grоwth оf wоund tissuе intо аn аbsоrbаblе mаtriх соmprising thе wоund pасking mеаns. In still оthеr еmbоdimеnts, а suсtiоn bulb mау bе usеd tо prоvidе а sоurсе оf rеduсеd prеssurе tо аn оvеrlау thаt соvеrs thе wоund. Finаllу, mеthоds ...

Dressing for applying reduced pressure to and collecting and storing fluid from a tissue site

Evaporative body-fluid containers and methods

Body-fluid containers, methods, and systems are presented that include a container (104) that has a container housing (126) formed, at least in part, by a liquid-impermeable, vapor-permeable material (136). The liquid-impermeable, vapor-permeable material (136) allows water to evaporate and be transmitted outside of the container (104). The evaporation allows more fluid to be processed by the container than the container could otherwise hold. Other systems, methods, and apparatuses are presented.

HANGING APPARATUS FOR FIXING A MEDICAL DEVICE TO A SUBSTANTIALLY HORIZONTAL OR SUBSTANTIALLY VERTICAL SUPPORT STRUCTURE

DRESSING AND METHOD FOR APPLYING REDUCED PRESSURE TO AND COLLECTING AND STORING FLUID FROM A TISSUE SITE

A reduced pressure dressing for applying reduced pressure treatment to a tissue site includes an interface layer adapted to be positioned at the tissue site. An absorbent layer is in fluid communication with the interface layer to absorb liquid from at least one of the interface layer and the tissue site. A pump is in fluid communication with the absorbent layer to deliver a reduced pressure to the tissue site. A cover is positioned over the pump, the absorbent layer, and the interface layer to maintain the reduced pressure at the tissue site, and a liquid-air separator is positioned between the absorbent layer and the pump to inhibit liquid from entering the pump. 1. A system for treating a tissue site , comprising: an absorbent layer adapted to be positioned at the tissue site to absorb liquid from the tissue site, the absorbent layer having a perimeter region and a center region;', 'a pump adapted to be in fluid communication with the absorbent layer to provide reduced pressure to the absorbent layer; and', 'a diverter layer adapted to be positioned in fluid communication between the absorbent layer and the pump to draw the liquid away from the center region of the absorbent layer towards the perimeter region of the absorbent layer; and, 'a dressing, comprisinga cover adapted to be positioned over the dressing to provide a fluid seal relative to the tissue site.2. The system of claim 1 , further comprising an interface layer adapted to be positioned between the tissue site and the absorbent layer claim 1 , wherein the interface layer is hydrophobic.3. The system of claim 1 , wherein the absorbent layer comprises a super absorbent fiber.4. The system of claim 1 , further comprising a liquid-air separator positioned between the absorbent layer and the pump claim 1 , wherein the liquid-air separator substantially precludes liquid from entering the pump.5. The system of claim 1 , further comprising a seal layer adapted to be positioned between the cover and tissue ...

WOUND DRAINAGE CONTROL APPARATUS

A wound drainage device flow regulator () for controlling fluid flow from a wound to a container. The regulator (), in use, provides selective communication between a conduit and the container. The device includes a valve for communication between the conduit and the container in response to a level of vacuum in said conduit below a selected value. The valve has a diaphragm () exposed to atmospheric pressure on one side and to the level of vacuum in the conduit on the other side, and an adjustable force means arranged to apply a force to the diaphragm () in opposition to the atmospheric pressure, the difference between the force applied by the adjustable force means () and the force generated by the atmospheric pressure providing a control force required to be applied by the level of vacuum in the conduit to close the valve means to interrupt communication between the container () and the conduit and a lock mechanism () arranged to lock the adjustable force mechanism () at a desired adjustment corresponding to a desired level of vacuum. 1. A wound drainage device flow control apparatus , the wound drainage device for withdrawing fluid from a wound including a conduit to be connected at one end to a wound to receive fluid from the wound and to deliver said fluid to a container , the flow control apparatus , in use , to selectively provide communication between the conduit and container , including a valve arranged to establish communication between the conduit and the container in response to a level of vacuum in said conduit below a selected value , the valve including a diaphragm exposed to atmospheric pressure on one side and to the level of vacuum in the conduit on the other side , and an adjustable force means arranged to apply a force to the diaphragm in opposition to the atmospheric pressure , the difference between the force applied by the adjustable force means and the force generated by the atmospheric pressure providing a control force required to be ...

CHEST DRAINAGE SYSTEMS AND METHODS

A chest drainage system includes a collection device and a fluid pathway configured to extend from the collection device to a patient. The fluid pathway has a proximal portion configured to extend proximally toward the patient and a distal portion configured to extend distally from the patient. The chest drainage system also includes a pressure source including an accumulator configured to selectively provide sub-atmospheric pressure to the distal portion of the fluid pathway and a valve configured to selectively relieve pressure in the proximal portion of the fluid pathway. The system is configured to open the valve and to introduce the sub-atmospheric pressure from the accumulator of the pressure source when a predetermined pressure differential is detected between the proximal and distal portions of the fluid pathway. 1. A chest drainage system including:a collection device;a fluid pathway configured to extend from the collection device to a patient, the fluid pathway having a proximal portion configured to extend proximally toward the patient and a distal portion configured to extend distally from the patient;a pressure source configured to selectively provide sub-atmospheric pressure to the distal portion of the fluid pathway, the pressure source including a pressure accumulator configured to store the sub-atmospheric pressure; anda valve configured to selectively relieve pressure in the proximal portion of the fluid pathway,wherein the system is configured to open the valve and to introduce the sub-atmospheric pressure from the pressure source when a predetermined pressure differential is detected between the proximal and distal portions of the fluid pathway.2. The system of claim 1 , wherein the pressure source also includes means for generating the sub-atmospheric pressure in the pressure accumulator.3. The system of claim 2 , wherein the means for generating the sub-atmospheric pressure comprises a pump.4. The system of claim 2 , wherein the means for ...

CONTROL CIRCUIT AND METHOD FOR NEGATIVE PRESSURE WOUND TREATMENT APPARATUS

A negative pressure wound therapy apparatus can include a wound dressing, a fluid collection container, a vacuum pump comprising a pump motor, and tubing. Additionally, the apparatus can include a pressure sensor that measures a pressure in the tubing. One or more tubes can channel a fluid between the wound dressing, the fluid collection canister, and the pump. In addition, first and second control circuits can be provided for controlling the pump motor without using a processor. The first control circuit can generate a difference signal between a desired pressure input and a pressure sensor input, and can further generate a motor control signal responsive to the difference signal. Moreover, a second control circuit can provide an override signal based at least in part on the difference signal and at least one reference signal. The override signal beneficially overrides the motor control signal to prevent the pump motor from stalling. 1. A negative pressure wound therapy apparatus comprising:a wound dressing;a fluid collection container;a vacuum pump comprising a pump motor;one or more tubes configured to at least channel a flow of fluid between said wound dressing, said fluid collection canister, and said pump;a pressure sensor configured to measure a pressure in one or more of said one or more tubes and to generate a pressure sensor voltage reflecting pressure in one or more of said one or more tubes; [ [ receive the pressure sensor voltage from the pressure sensor;', 'receive a desired pressure voltage from a user; and', 'provide a difference signal comprising an amplified difference between the desired pressure voltage and the pressure sensor voltage, wherein the difference circuit provides proportional control; and, 'a difference circuit configured to, 'a pulse width modulator configured to generate a motor control signal responsive to the difference signal, the motor control signal configured to control a speed of the pump motor; and, 'a pressure controller ...

REDUCED-PRESSURE TREATMENT SYSTEMS WITH RESERVOIR CONTROL

A reduced-pressure system for delivering reduced pressure for medical purposes to a desired site and to receive fluids in one instance includes a reservoir having an interior space operable to contain the fluids. A reduced-pressure delivery conduit is placed in fluid communication with the interior space for delivering the reduced pressure to the desired site. A source conduit and a pressure sensor conduit are placed in fluid communication with the interior space. A pressure sensor is placed in fluid communication with the pressure sensor conduit. A reduced-pressure source is placed in fluid communication with the source conduit. A reduced-pressure control unit is associated with the pressure sensor and the reduced-pressure source and is operable to receive pressure data from the pressure sensor and supply data from the reduced-pressure source and to determine when a reservoir-full/blockage condition exists. Other systems and methods are presented. 1. A method of controlling a reduced-pressure treatment system , the method comprising:supplying reduced pressure to a reservoir in fluid communication with a tissue site;collecting fluid from the tissue site in the reservoir;monitoring a pressure signal correlated to reduced pressure within the reservoir;receiving a supply signal correlated to a supply rate of reduced pressure;determining if a blockage condition exists based on the pressure signal and the supply signal; andterminating the supply of reduced pressure if the blockage condition exists.2. The method of wherein the reduced pressure is supplied with a vacuum pump.3. The method of wherein the reduced pressure is supplied with a vacuum pump and wherein determining if blockage condition exists comprises determining if the pressure signal decreases below a selected absolute value for a specified time interval and the pressure signal does not rise in absolute value with an increased supply signal.4. A method of manufacturing a reduced-pressure system claim 1 , the ...

DRESSINGS, SYSTEMS, AND METHODS FOR TREATING A WOUND ON A PATIENT'S LIMB EMPLOYING LIQUID CONTROL

Wound dressings, systems, and methods are presented for treating a wound on a patient's limb, such as a venous leg ulcer. The dressings, systems, and methods involve creating airflow within the dressing to vaporize and remove liquid. The airflow may begin when the dressing becomes saturated. The dressings may be used to provide compression and reduced pressure to the wound. Other systems, methods, and dressings are presented herein. 1. A wound dressing for treating a wound on a patient's limb , the wound dressing comprising:a tubular sleeve member for receiving the patient's limb; an elastic compression member formed as a sleeve having a first side and a second, patient-facing side,', 'a fluid-directing member having a first side and a second, patient-facing side, wherein the first side of the fluid-directing member is disposed proximate to the second, patient-facing side of the elastic compression member, and wherein the fluid-directing member is operable to inhibit fluids from flowing through the fluid-directing member, and', 'a pathway member having a first side and a second, patient-facing side, wherein the first side of the pathway member is proximate to the second, patient-facing side of the fluid-directing member, wherein the pathway member is operable to transport a fluid under a pressure gradient;, 'wherein the tubular sleeve member comprisesa pressure source fluidly coupled to the pathway member for moving fluid therein; andat least one exhaust port fluidly coupled to the pathway member for allowing fluids to exit the wound dressing.2. The wound dressing of claim 1 , wherein the tubular sleeve member further comprises:an absorbent member for at least temporarily retaining liquids, the absorbent member having a first side and a second, patient-facing side, wherein the first side of the absorbent member is proximate to the second, patient-facing side of the pathway member.3. The wound dressing of claim 1 , wherein the tubular sleeve member further comprises: ...

Reduced pressure tissue treatment systems and methods having a reduced pressure dressing and associated valve

A system for treating multiple tissue sites of a patient includes a first dressing filler adapted to be positioned at a first of the tissue sites. A second dressing filler is adapted to be positioned at a second of the tissue sites. A bridge manifold is positioned between the first tissue site and the second tissue site to provide fluid communication between the first and the second tissue site. A reduced pressure source is fluidly connected to at least one of the bridge manifold, the first tissue site, and the second tissue site. A valve is operably associated with one of the first and the second tissue sites to allow fluid to flow from the one of the first and the second tissue sites, but precluding flow towards the one of the first and the second tissue sites.

SELF CONTAINED WOUND DRESSING WITH MICROPUMP

A composite wound dressing apparatus promotes healing of a wound via the use of a micropump system housed within a wound dressing member. The micropump system includes a miniature pump that applies a subatmospheric pressure to the wound to effectively draw wound fluid or exudate away from the wound bed without the need for an external vacuum source. Hence, the wound dressing and micropump system is portable which allows the patient mobility that is unavailable when an external vacuum source is used. The patient does not need to be constrained for any period of time while exudate is being removed from the wound. 1. A wound dressing apparatus , which comprises:a wound dressing member dimensioned for positioning relative to a wound bed; anda micropump system including a micropump for applying subatmospheric pressure to at least the wound dressing member to facilitate removal of fluid from the wound bed, the micropump being mounted to the wound dressing member.2. The wound dressing apparatus according to wherein the micropump is adapted to produce subatmospheric pressure ranging between about 20 mmHg and about 500 mmHg.3. The wound dressing apparatus according to wherein the micropump system includes control means to control operation of the micropump.4. The wound dressing apparatus according to wherein the micropump system includes a pressure sensor adapted to detect pressure at a predetermined location relative to the wound dressing member claim 3 , and send a corresponding signal to the control means.5. The wound dressing apparatus according to wherein the control means includes a motor controller adapted to control or vary the output of the micropump in response to the pressure sensed by the pressure sensor.6. The wound dressing apparatus according to wherein the micropump system includes a battery for actuating the micropump claim 3 , the battery adapted for implantation within the wound dressing member.7. The wound dressing apparatus according to wherein the wound ...

REDUCED-PRESSURE SYSTEMS, METHODS, AND DEVICES FOR SIMULTANEOUSLY TREATING A PLURALITY OF TISSUE SITES

Systems and methods for treating a plurality of tissue sites include a multi-port therapy unit. The multi-port therapy unit includes a plurality of patient-side ports each fluidly coupled to a plurality of conduits and a fluid reservoir fluidly coupled to the plurality of ports. A plurality of pressure sensors are associated with the plurality of patient-side ports to determining a pressure associated with each conduit. A controller is operatively coupled to the plurality of pressure sensors to receive treatment pressure data, monitor pressure for each pressure sensor of the plurality of pressure sensors, and signal an alarm condition if the pressure is outside of a pre-selected range. The system includes a reduced-pressure source fluidly coupled to a dressing at each tissue site through the multi-port therapy unit. 1. A system for simultaneously treating a plurality of tissue sites , the system comprising:a plurality of reduced-pressure dressings;a plurality of multi-lumen reduced-pressure delivery conduits, wherein each multi-lumen reduced-pressure delivery conduit includes at least one pressure-sampling lumen and at least one reduced-pressure supply lumen, each multi-lumen reduced-pressure delivery conduit fluidly coupled to a respective reduced-pressure dressing of the plurality of reduced-pressure dressings; a plurality of patient-side ports, wherein each of the plurality of patient-side ports is configured to fluidly couple with at least one of the pressure-sampling lumens and one of the reduced-pressure supply lumens,', 'a plurality of pressure sensors configured to determine a pressure associated with the pressure-sampling lumens of the respective multi-lumen reduced pressure delivery conduit,', 'a controller operatively coupled to the plurality of pressure sensors for receiving treatment pressure data from the plurality of pressure sensors, wherein the controller comprises a microprocessor and a memory configured to monitor pressure for each pressure sensor ...

SUSTAINED VARIABLE NEGATIVE PRESSURE WOUND TREATMENT AND METHOD OF CONTROLLING SAME

Disclosed herein are systems and methods for providing reduced or negative pressure, and more particularly cyclical reduced pressure, to treat a wound. The system can include a wound dressing, a fluid collection container, a suction source, filters, and conduits. In addition, the system can include a control device and sensors. The sensors may be configured to monitor certain physiological conditions of a patient such as temperature, pressure, blood flow, blood oxygen saturation, pulse, cardiac cycle, and the like. Application of cyclical reduced pressure between two or more values below atmospheric pressure may be synchronized with the physiological conditions monitored by the sensors. Certain embodiments of the system utilize an air reservoir and one or more valves and pressure sensors or gauges to allow for rapid cycling of the level of reduced pressure within the wound dressing between two or more reduced pressure values. 1. A method of treating a wound , the method comprising:applying reduced pressure to a wound dressing placed over the wound; and removing air from under the wound dressing and storing at least some of the removed air in a reservoir; and', 'supplying at least some of the removed air from the reservoir to under the wound dressing so that pressure under the wound dressing changes from a first magnitude of reduced pressure to a second magnitude of reduced pressure., 'adjusting pressure under the wound dressing by2. The method of claim 1 , further comprising applying reduced pressure to the wound dressing by using a suction source.3. The method of claim 2 , further comprising communicating air between the suction source claim 2 , the reservoir claim 2 , and the wound dressing using a plurality of conduits.4. The method of claim 2 , further comprising:communicating air between the suction source and the wound using a first flow path;communicating air between the wound and the reservoir using a second flow path; andcommunicating air removed by the ...

Portable Negative Pressure Wound Therapy Device

A portable NPWT system includes a dressing assembly for positioning over a wound to apply a negative pressure to the wound and a canister assembly. The canister assembly includes a control unit having a vacuum source and a controller and a collection canister in communication with the dressing assembly operable to receive fluid from the wound. The collection canister has ports to introduce a vacuum from the vacuum source into the collection canister. A ball float is provided to substantially close the suction port in response to one of collection of a predetermined volume of exudate in the collection canister, tilting of the collection canister beyond a predetermined angle of orientation or inversion of the collection canister. 1. A portable negative pressure wound therapy system comprising:a dressing assembly for positioning over a wound to apply a negative pressure to the wound; anda canister assembly dimensioned to be worn by a user, said canister assembly including:a control unit having a negative pressure source and a controller; and a suction port in fluid communication with said negative pressure source; and', 'a ball float arrangement having a ball float operable to substantially close said suction port in response to one of collection of a predetermined volume of exudate in the collection canister, tilting of the collection canister beyond a predetermined angle of orientation or inversion of the collection canister., 'a collection canister in communication with the dressing assembly and having a chamber operable to receive fluid from the wound, the collection canister including2. The portable negative pressure wound therapy system according to claim 1 , wherein said control unit further comprises a pressure transducer operable to measure a pressure level in said collection canister.3. The portable negative pressure wound therapy system according to claim 2 , wherein said pressure transducer provides a signal to said controller based on the measured pressure ...

Negative Pressure Wound Therapy Apparatus Including a Fluid Line Coupling

A negative pressure wound therapy apparatus includes a wound dressing for forming a substantially fluid-tight seal over a wound to define a reservoir over the wound in which a negative pressure may be maintained. A vacuum source is in fluid communication with the reservoir to provide an appropriate negative pressure to the reservoir to stimulate healing of the wound. The apparatus includes a fluid conduit in fluid communication with the reservoir and defining a fluid flow path for carrying fluids from the reservoir, and a fluid line coupling adapted for selective engagement and disengagement of first and second coupling segments to respectively maintain and interrupt the fluid flow path. 1. A negative pressure wound therapy apparatus comprising:a wound dressing for defining a reservoir over a wound in which a negative pressure may be maintained by forming a substantially fluid-tight seal around the wound;a fluid conduit in fluid communication with the reservoir and defining a fluid flow path for carrying fluids from the reservoir;a vacuum source in fluid communication with the fluid conduit, the vacuum source suitable for providing an appropriate negative pressure to the reservoir to stimulate healing of the wound; anda fluid line coupling, in line with the fluid conduit, the fluid line coupling comprising first and second coupling segments adapted for selectable engagement and disengagement, wherein the at least one of the first and second coupling segments is capable of obstructing fluid flow further includes a post having a bias to deform the fluid conduit section coupled thereto upon disengagement from the other of the first and second coupling segments to obstruct fluid flow, and further wherein the other of the first and second coupling segments includes a pin adapted to engage the post when first and second coupling segments are engaged such that the post is moved against the bias to allow the fluid conduit section to assume an un-deformed shape to permit ...

SYSTEM AND METHOD FOR MANAGING REDUCED PRESSURE AT A TISSUE SITE

The illustrative embodiments described herein are directed to an apparatus and method for managing reduced pressure at a tissue site. The apparatus includes a reduced pressure source that generates reduced pressure. The reduced pressure is delivered to the tissue site via a delivery tube. The apparatus includes a single pressure sensor. The single pressure sensor detects an actual reduced pressure at the tissue site. The apparatus also includes a controller. The controller determines a responsiveness of the actual reduced pressure measured by the single pressure sensor to an increase in reduced pressure generated by the reduced pressure source. The apparatus includes an indicator. The indicator emits a signal when the controller determines that the actual reduced pressure measured by the single pressure sensor is nonresponsive to the increase in reduced pressure generated by the reduced pressure source. 111.-. (canceled)12. A method for managing reduced pressure at a tissue site , the method comprising:measuring an operating parameter of a reduced pressure source to infer a target reduced pressure generated by the reduced pressure source;measuring an actual reduced pressure at the tissue site using a single pressure sensor;comparing the actual reduced pressure with the target reduced pressure to form a comparison; andperforming a reduced pressure management function based on the comparison.13. The method of claim 12 , wherein performing the reduced pressure management function based on the comparison further comprises:responsive to the actual reduced pressure exceeding the target reduced pressure, decreasing a generated reduced pressure generated by a reduced pressure source.14. The method of claim 13 , further comprising:responsive to the actual reduced pressure exceeding the target reduced pressure by a predetermined threshold, opening a relief valve that decreases the actual reduced pressure at the tissue site.15. The method of claim 13 , further comprising: ...

Reduced-pressure treatment systems and methods employing a fluidly isolated pump control unit

Systems, devices, and methods for treating a tissue site on a patient with reduced pressure are presented. In one instance, a reduced-pressure treatment device to treat a tissue site with reduced pressure may include a pump control unit fluidly separate from a collection unit. Pump energy may be provided by the pump control unit to deflect one or more diaphragms within the collection unit to create reduced pressure. Other systems, devices, and methods are presented.

SYSTEMS AND METHODS FOR DELIVERING FLUID TO A WOUND THERAPY DRESSING

Provided are systems and methods for delivery of fluid to a wound therapy dressing. In exemplary embodiments, a pressure source provides negative pressure to a wound dressing and a biasing mechanism provides positive pressure to a fluid reservoir. 1. A system adapted to deliver fluid to a wound therapy dressing , comprising:a negative pressure source adapted to be in fluid communication with the wound therapy dressing to provide negative pressure to the wound therapy dressing;a housing adapted to receive a fluid reservoir, the fluid reservoir adapted to be in fluid communication with the wound therapy dressing to provide fluid from the fluid reservoir to the wound therapy dressing;a biasing mechanism adapted to secure the fluid reservoir in the housing and to exert a positive pressure on the fluid in the fluid reservoir; anda control circuit adapted to control the negative pressure in the wound therapy dressing.2. The system of claim 1 , wherein the negative pressure source is disposed within the housing.3. The system of claim 1 , wherein the biasing mechanism is configured to compress the fluid reservoir to secure the fluid reservoir within the housing and to exert the positive pressure on the fluid in the fluid reservoir.4. The system of claim 1 , wherein the biasing mechanism is a spring.5. The system of claim 4 , wherein the spring is a constant-force spring.6. The system of claim 1 , wherein the positive pressure exerted on the fluid in the fluid reservoir is at least approximately 75 mm Hg.7. The system of claim 1 , wherein the fluid reservoir is a polyethylene bag.8. The system of claim 1 , wherein the control circuit is configured to control a flow of the fluid from the fluid reservoir to the wound therapy dressing and to detect a flow rate of the fluid from the fluid reservoir to the wound therapy dressing.9. The system of claim 8 , wherein the control circuit is coupled to a flow sensor configured to detect the flow rate of the fluid from the fluid ...

CASSETTE FOR A SURGICAL FLUID MANAGEMENT PUMP SYSTEM

A pump system including a pump, an inflow cassette and an outflow cassette. The inflow cassette has a damping flexible membrane covering a damping region configured to dampen pressure pulsations in washing fluid passing through the damping region. The pump has a plurality of individually actionable pressing members that can each be individually actuated to pinch one of a plurality of suction tubes of the outflow cassette to at least partially prevent fluid flow through the one of the plurality of the suction tubes. 1. An inflow cassette for a pump comprising:a housing having an internal flow path including an ingress path section and an egress path section;peristaltic tubing connected to the housing and being fluidly located between the ingress path section and the egress path section;an input tube fluidly connected to the ingress path section and being configured to provide a fluid to the housing, with the ingress path section being fluidly located between the input tube and the peristaltic tubing; andan inflow tube fluidly connected to the egress path section and being configured to provide the fluid to a patient, with the egress path section being fluidly located between the ingress path section and the inflow tube;the housing has a damping flexible membrane covering a damping region of the egress path section, with the damping flexible membrane being configured to dampen pressure pulsations in the fluid passing through the damping region.2. The inflow cassette for the pump of claim 1 , wherein:the internal flow path includes a pressure sensing region in the egress path section located between the damping region and the inflow tube; andthe housing includes a pressure sensing flexible membrane being fluidly connected to the internal flow path through a slot in a wall of the housing.3. The inflow cassette for the pump of claim 2 , wherein:the housing includes a top surface with the damping flexible membrane; andthe pressure sensing flexible membrane is located at ...

SOLENOID ACTIVATED VACUUM CONTROL DEVICE

The invention herein applies generally to General-purpose, Surgical and Tracheal suction regulators. In one embodiment of the invention, at least one micro-latching valve is opened and closed by at least one solenoid electromechanical actuator. The micro-latching solenoid valve in turns opens and closes at least one main valve that is connected the hospital vacuum or gas intake conduit. The latching nature of the solenoid, along with its low power activation allows for a battery powered, long-life device. Timing and control of the electromechanical actuator is performed by a low power micro-controller. This provides opportunity for highly accurate timing cycles, user adjustable timing intervals and feedback loop control operations. The invention also features a wireless suction control system of many suction regulators comprising a network. Wherein the plurality of wireless suction regulators are linked to at least one router with at least one wireless transmitter, and the network is linked through the router to the internet. 1. A suction regulator , comprising:at least one micro-latching solenoid valve, said at least one micro-latching solenoid valve further comprising at least one electromechanical actuator;at least one main valve, said at least one main valve further comprising at least one main valve spring, and at least one sliding seal body, said at least one main valve is attached to a vacuum source;at least one micro-controller, said at least one micro-controller commands said at least one electromechanical actuator; andat least one power source, said at least one power source provides power to said at least one electromechanical actuator and said at least one micro-controller,wherein the at least one micro-latching solenoid valve controls the flow of vacuum through the at least one main valve.2. The suction regulator of claim 1 , wherein the suction regulator further comprises claim 1 , a regulator cover claim 1 , a vacuum gauge claim 1 , a mode switch ...

PRESSURE CONTROL APPARATUS

Methods and apparatuses are disclosed for applying negative pressure to a wound site. In some embodiments, the apparatus comprises a source of negative pressure, a processing element, and a memory comprising instructions configured to, when executed on the processing element, cause the apparatus to attempt to generate, via the source of negative pressure, a desired negative pressure at the wound site. If the desired negative pressure has not been generated after a first predetermined period of time, the instructions cause the apparatus to: deactivate the source of negative pressure for a second predetermined period of time, and subsequently attempt to generate the desired negative pressure at the wound site. 1. An apparatus for applying negative pressure to a wound site , the apparatus comprising:a source of negative pressure;a processing element; and via the source of negative pressure, attempt to generate a desired negative pressure at the wound site;', 'if the desired negative pressure has not been generated after a first predetermined period of time, deactivate the source of negative pressure for a second predetermined period of time; and', 'subsequently attempt to generate the desired negative pressure at the wound site., 'a memory comprising instructions configured to, when executed on the processing element, cause the apparatus to2. The apparatus as claimed in claim 1 , wherein the instructions are further configured to cause the apparatus to:if after a further predetermined period of time the desired negative pressure has not been generated, deactivate the source of negative pressure for the second predetermined period of time.3. The apparatus as claimed in claim 2 , wherein the instructions are further configured to cause the apparatus to:repeat the deactivation of the source of negative pressure for the second predetermined period of time, and subsequently attempt to generate the desired negative pressure at the wound site, for N cycles when the desired ...

SUB-ATMOSPHERIC WOUND-CARE SYSTEM

Methods and systems are provided for a sub-atmospheric wound-care (SAWS) system for treating an open wound. The SAWS system includes a regulated vacuum source for developing a negative pressure, a flow rate meter configured to measure a flow rate of liquid removed from the wound, a primary pressure regulating sensor located proximate the wound for directly measuring the negative pressure at the wound, a backup pressure regulating sensor located vacuum tube, a porous dressing suitable to be sealed airtight which is positioned within a wound interface chamber, a collection canister configured to collect said liquid removed from the wound, and an adapter configured to use wall suction a primary regulated vacuum source. 1. A sub-atmospheric wound-care system for treating an open wound comprising:a connector configured to be connected to wall suction as a regulated vacuum source for developing a negative pressure;a flow rate meter configured to measure a flow rate of liquid removed from the wound;a pressure regulating sensor located proximate the wound for directly measuring the negative pressure at the wound;a collection canister configured to collect said liquid removed from the wound; anda porous dressing positioned over the wound.2. The sub-atmospheric wound-care system of claim 1 , wherein the wall suction is a first regulated vacuum source claim 1 , the system further comprising:a vacuum motor configured for use as a second regulated vacuum source; anda valve configured to be switched between the first regulated vacuum source and the second regulated vacuum source.3. The sub-atmospheric wound-care system of claim 1 , wherein the vacuum motor is a brushless vacuum motor.4. The sub-atmospheric wound-care system of claim 1 , further comprising:a wound interface chamber connected via a vacuum path to the regulated vacuum source; anda tube connected to the wound interface chamber;wherein the porous dressing is disposed between the wound interface chamber and the wound.5 ...

SYSTEMS AND METHODS FOR IMPROVED CONNECTION TO WOUND DRESSINGS IN CONJUNCTION WITH REDUCED PRESSURE WOUND TREATMENT SYSTEMS

A system for applying reduced pressure to tissue includes a multi-lumen reduced pressure delivery tube having a proximate end, a distal end, a primary lumen extending through the conduit from the proximate end to the distal end, and an ancillary lumen extending through the conduit from the proximate end to the distal end. A vacuum pump is coupled to the proximate end of the primary lumen, and a reduced pressure adapter is coupled to the distal end of the reduced pressure delivery tube. The adapter includes channels to direct liquid away from the ancillary lumens and into the primary lumen. 1. A system for applying reduced pressure to a tissue site , the system comprising:a multi-lumen conduit having a proximate end, a distal end, a primary lumen extending through the conduit from the proximate end to the distal end, and an ancillary lumen extending through the conduit from the proximate end to the distal end;a vacuum pump coupled to the primary lumen;a reduced pressure adapter coupled to the distal end, the reduced pressure adapter comprising a conduit housing with a recessed region defining an entry surface and channels formed on the entry surface, wherein the channels are adapted to direct liquid into the primary lumen;a pressure sensor coupled to the ancillary lumen; andmeans for operating the vacuum pump using feedback from the pressure sensor.2. The system of claim 1 , wherein the reduced pressure adapter comprises:a primary port and an ancillary port disposed on the entry surface;a primary conduit through the conduit housing in fluid communication with the primary lumen and the primary port;an ancillary conduit through the conduit housing, the ancillary conduit in fluid communication with the ancillary lumen and the ancillary port.3. The system of claim 1 , further comprising a base attached to the conduit housing.4. The system of claim 3 , wherein the conduit housing is rotatable about the base.5. The system of claim 3 , wherein:the conduit housing is ...

APPARATUSES, SYSTEMS, AND METHODS FOR MANAGING LIQUID FLOW ASSOCIATED WITH A TISSUE SITE USING THE PRESENCE OF REDUCED PRESSURE

The illustrative embodiments described herein are directed to apparatuses, systems, and methods for managing liquid flow associated with a tissue site that involves using reduced pressure to control fluid flow. In one instance, an apparatus includes a first valve and a second valve in fluid communication with a reduced-pressure source. The valves are movable between an open position and a closed position and are operable to change flow status (open to closed or vice versa) based on a presence of reduced pressure. At least one of the first valve or the second valve is in the closed position to obstruct a flow of a liquid while the other is in the open position. The apparatus also includes a reservoir fluidly coupled to the first valve and the second valve. Other systems, methods, and apparatuses are presented. 1. An apparatus for managing liquid flow associated with a tissue site , the apparatus comprising:a first valve in fluid communication with a reduced-pressure source, the first valve movable between an open position and a closed position, wherein the first valve is operable to be activated based on a presence of reduced pressure;a second valve in fluid communication with the reduced-pressure source, the second valve movable between an open position and a closed position, wherein the second valve is operable to be activated based on the presence of reduced pressure;wherein at least one of the first valve and the second valve is in the closed position to obstruct a flow of a liquid when experiencing reduced pressure;a reservoir fluidly coupled to the first valve and the second valve, the reservoir operable to contain a liquid when the second valve is in the closed position; anda reduced-pressure conduit in fluid communication with the first valve and the second valve, wherein the reduced-pressure conduit is operable to transmit reduced pressure from the tissue site to the first valve and the second valve.2. The apparatus of claim 1 , wherein the first valve moves ...

PORTABLE VACUUM DEVICE

A portable vacuum device including: a source of liquefied gas; a gas operated vacuum generator having a vacuum inlet; a valve for controlling flow of gas from the source to the vacuum generator; a suction tube having proximal and distal ends; a collection container having an outlet coupled to the vacuum inlet of the vacuum generator and an inlet coupled to the proximal end of the suction tube, the arrangement being such that when said valve is opened the vacuum generator creates a vacuum in the container and at the distal end of the suction tube. 1. A portable vacuum device including:a source of liquefied gas;a gas operated vacuum generator having a vacuum inlet;a valve for controlling flow of gas from the source to the vacuum generator;a suction tube having proximal and distal ends;a collection container having an outlet coupled to the vacuum inlet of the vacuum generator and an inlet coupled to the proximal end of the suction tube, the arrangement being such that when said valve is opened the vacuum generator creates a vacuum in the container and at the distal end of the suction tube.2. A portable vacuum device including:a source of liquefied gas;a gas operated vacuum generator having a vacuum inlet;a valve for controlling flow of gas from the source to the vacuum generator;a suction tube having proximal and distal ends;a collection container having an outlet coupled to the vacuum inlet of the vacuum generator and an inlet coupled to the proximal end of the suction tube, the arrangement being such that when said valve is opened the vacuum generator creates a vacuum in the container and at the distal end of the suction tube;characterised in that the vacuum at the distal end of the tube is less than −40 kPa.3. A device as claimed in wherein the pressure at the distal end of the tube is in the range −60 kPa to −40 kPa.4. A device as claimed in wherein the liquefied gas is carbon dioxide.5. A device as claimed in wherein the device includes a pressure chamber within ...

NEGATIVE PRESSURE WOUND THERAPY SYSTEM

A negative pressure wound therapy system creates a negative pressure environment in the opening of a wound-dressing unit and a positive pressure environment in the collecting bag. Then a positive pressure detecting procedure is proceeded in the positive pressure environment and a negative pressure detecting procedure is proceeded in the negative pressure environment. The detecting results are sent to determine whether a micro pump is stopped. 1. A negative pressure wound therapy system comprising:a controller;a sensor assembly electrically connected to the controller and comprising a negative pressure sensor and a positive pressure sensor to detect pressure, and comprising a relief valve;an actuator comprising a micro pump electrically connected to the sensor assembly;a collector comprising a collecting bag;a wound-dressing unit having an opening;a first fluid connection connecting between the sensor assembly and the collecting bag;a second fluid connection connecting between the sensor assembly and the wound-dressing unit;a third fluid connection connecting between the wound-dressing unit, the actuator and the collecting bag, wherein the actuator is located between the wound-dressing unit and the collecting bag in the third fluid connection;whereby the micro pump creates a negative pressure environment in the opening through the third fluid connection and extracts the fluid from the opening of the wound-dressing unit, and the fluid passes the actuator to flow into the collecting bag, and the collecting bag is defined as a positive pressure environment.2. The negative pressure wound therapy system as claimed in further comprising:a first detachable electrical wire set connecting between the sensor assembly and the controller;a second detachable electrical wire set connecting between the sensor assembly and the micro pump;a first detachable tube set connecting between a pump inlet of the micro pump and the sensor assembly;a second detachable tube set connecting ...

NEGATIVE PRESSURE DEVICE

A method and apparatus are disclosed for providing negative pressure at a wound site. The apparatus includes a suction pump for generating negative pressure, a negative pressure reservoir, a valve element arranged to selectively provide a fluid communication path between the reservoir and the wound site while a negative pressure in the negative pressure reservoir is greater than a threshold negative pressure, to thereby provide a desired negative pressure at the wound site, and wherein in response to a pressure in the negative pressure reservoir decreasing to the threshold negative pressure, the suction pump is operable to re-establish an initial negative pressure in the negative pressure reservoir. 1. Apparatus for providing negative pressure at a wound site , the apparatus comprising:a suction pump for generating negative pressure;a negative pressure reservoir;a valve element arranged to selectively provide a fluid communication path between the reservoir and the wound site while a negative pressure in the negative pressure reservoir is greater than a threshold negative pressure, to thereby provide a desired negative pressure at the wound site; and 'in response to a pressure in the negative pressure reservoir decreasing to the threshold negative pressure, the suction pump is operable to re-establish an initial negative pressure in the negative pressure reservoir.', 'wherein2. The apparatus of claim 1 , further comprising a further valve element coupled between the negative pressure reservoir and the suction pump claim 1 , the further valve element configured to connect the suction pump to the negative pressure reservoir when the pressure in the negative pressure reservoir decreases to the threshold negative pressure.3. The apparatus of claim 1 , further comprising a pressure sensor arranged to monitor the negative pressure in the negative pressure reservoir.4. The apparatus as claimed in claim 3 , further comprising a controller configured to control the suction ...

Wound Treatment Device

The current invention discloses a wound treatment device having a wound covering member, an applicator unit, and two lumens. The wound covering member may cover a wound. Sealing mechanism of the wound covering member may be used to form a sealed wound enclosure over and around the wound. The two lumens, including a negative pressure lumen and an oxygen lumen, connect the wound enclosure to the applicator unit. The applicator may be used to apply alternating and cycling negative pressure and oxygen to the wound enclosure, facilitating the wound healing process. The levels and durations of negative pressure, as well as the purity, amount, and durations of oxygen, may be adjusted by the applicator unit. 1: A wound treatment device , comprising: wherein the wound covering member covers a wound and the inner side faces the wound,', 'there is a sealing mechanism on the inner side of the wound treating pad,', 'and the sealing mechanism encircles the wound, attaches to skin surrounding the wound, and defines a sealed wound enclosure;, 'a wound covering member having an inner side and an outer side,'}a negative pressure lumen connected to the outer side of the wound treating pad;a negative pressure pump connected to the negative pressure lumen, the pump being capable of applying intermittent negative pressure to the wound enclosure;an oxygen lumen connected to the outer side of the wound treating pad; andan oxygen delivery device connected to the oxygen tube, the oxygen deliver delivery being capable of delivering intermittent oxygen to the wound enclosure.2: The wound treatment device of claim 1 , further comprising a control mechanism connected to the negative pressure pump and the oxygen delivery system claim 1 , the control mechanism controls the application of negative pressure and the delivery of oxygen.3: The wound treatment device of claim 1 , wherein the negative pressure pump claim 1 , the oxygen delivery device claim 1 , and the control mechanism are integrated ...

WOUND EXUDATE MONITOR ACCESSORY

A stand-alone system for assessing wound exudates from the wound of a patient is described. The system contains functionality to detect, process and report various wound parameters. The system also may make treatment determinations based on these findings. The system may detect one or more physiological values of the wound exudates from the wound of the patient. The system may also compare detected physiological values to predetermined physiological values, in order to obtain a comparison result in real time. The system may include a processor () which provides an electronic signal based on the comparison result in which the electronic signal may corresponds to guidelines for treating the wound (). The system described may be an accessory, which may be used on its own, or in conjunction with other wound treatment devices (). 1. A stand-alone system for assessing wound exudates from a wound of a patient , said system comprising:detecting means for detecting one or more physiological values of the wound exudates from the wound of the patient;comparing means for comparing the one or more detected physiological values to one or more predetermined physiological values to obtain a comparison result in real time; anda processor to provide an electronic signal based on the comparison resultin which the electronic signal corresponds to guidelines for treating the wound.2. The system of claim 1 , further comprising means for controlling a flow of wound exudates from the wound of the patient using the electronic signal claim 1 , in which the means for controlling are integrally arranged in the system.3. The system of claim 1 , in which the measuring means further comprises a fluid channel with an obstruction.4. The system of claim 1 , further comprising means for attaching to a negative wound pressure therapy device and for enabling the one or more physiological values of the wound exudates to be detected while the negative wound pressure therapy device is in use.5. The system ...

ENDOSCOPIC SURGERY INSTRUMENTATION

An embodiment of the invention includes a quantum fluid flow management apparatus which controls and facilitates delivery of liquid and/or air to the surgical site during a surgical procedure via a trumpet valve, various restriction (crimping) devices, and a network of tubing for selectively passing air or fluid through to the surgical site. The trumpet valve allows for selective control of air or fluid or both or neither. Additionally the flow management apparatus controls the application and suction of fluids from the surgical site which may be used in cooperation with the injection of a fluid such as water to irrigate the surgical site to remove body fluids, debrided material or the like. 1. An improved endoscopic surgery fluid management apparatus for controlling the delivery of liquid to a surgical site during a surgical procedure wherein the fluid management apparatus comprises a plurality of fluid restriction devices and a trumpet valve including a first valve in communication with a second valve along a main passage for selective transmission of fluid to the surgical site , the improvement comprising:a fluid network operationally connected between said trumpet valve and said restriction devices for fluid communication of said transmitted fluid throughout said fluid network;a main fluid conduit in communication with a fluid delivery means and associated with the first valve; anda patient conduit extending between the second valve and an endoscopic instrument for selective transmission of fluid through the endoscopic instrument towards the surgical site.2. The improved endoscopic surgery fluid management apparatus of further comprising a first passage in communication with the first valve and a second passage in communication with the second valve claim 1 , wherein one of said first passage and second passage is associated with a pneumatic source and the other of said first and second passage is associated with a hydraulic source.3. The improved endoscopic ...

Suction Device

The invention relates to a suction device for suctioning liquids, comprising a suction element, which is provided with at least one suction opening for receiving the liquid, and a pump which is connected to the suction element and which is equipped to generate a suction vacuum in the suction element, wherein a control device and at least one sensor which is connected to the control device are provided, wherein the control device is equipped to influence the suction power acting at the suction opening dependent on the signals received from the sensor. The object of the invention is to provide a suction device for suctioning liquids, said device working with greater efficiency than known suction devices. Additionally, there is a requirement in the medical field to provide a medical suction device which to the greatest possible extent prevents the damage that occurs to blood components during automatic operation. This object is achieved by the fact that the sensor is designed as an acoustic wave sensor. The acoustic wave sensor is equipped to detect acoustic waves which are generated by the suction element during the operation thereof.

WOUND CONNECTION PAD WITH RFID AND INTEGRATED STRAIN GAUGE PRESSURE SENSOR

Systems, methods, and dressings are presented that involve using a RFID device in a dressing to provide pressure data or other data to a remote base unit. The dressing is an interactive dressing. The reduced pressure in the dressing may be monitored and used to control delivery of reduced pressure. In one instance, the pressure data at each dressing allows a plurality of tissue sites to be monitored and used with as single remote base unit. In another instance, devices and methods for assuring a proper pairing of reduced-pressure dressings and remote base units are also presented. Other systems, methods, and dressings are presented. 1. A system for treating at least one tissue site with reduced pressure , the system comprising: a distribution manifold,', 'a sealing member covering at least a portion of the distribution manifold,', 'a RFID antenna,', 'a first processor coupled to the RFID antenna, and', 'a first sensor coupled to the first processor, wherein the first sensor is a pressure sensor comprising a strain gauge associated with a deflector, the first sensor having a first side exposed to the ambient atmosphere and a second side exposed to the tissue site;, 'a first, wireless, reduced-pressure dressing for disposing proximate to the tissue site, wherein the first, wireless, reduced-pressure dressing comprisesa remote base unit comprising a RFID reader and a second processor coupled to the RFID reader; anda reduced-pressure source fluidly coupled to the distribution manifold.2. The system of claim 1 , wherein the first claim 1 , wireless claim 1 , reduced-pressure dressing further comprises a second sensor selected from the group: temperature sensor claim 1 , pH sensor claim 1 , a humidity sensor claim 1 , a volatile organic compound sensor claim 1 , a blood sensor claim 1 , and a growth factor sensor.3. The system of claim 1 , wherein the reduced-pressure source is coupled to the remote base unit claim 1 , and wherein the remote base unit is adapted to supply ...

WOUND TREATMENT APPARATUS

A bandage has a first sheet overlying a wound and located adjacent to it and a top sheet overlying the first sheet. The first sheet has a plurality of discrete passageways overlying the wound and adapted to communicate negative pressure established by a negative pressure source to the wound. 1. A wound treatment apparatus comprising:a bandage including a fluid drainage passageway within the bandage and having an opening configured to be positioned adjacent the wound;first and second fluid drainage receptacles fluidly coupled to the fluid drainage passageway;a vacuum source configured to be fluidly coupled to the first and second fluid drainage receptacles to communicate negative pressure to the first and second fluid drainage receptacles; andfirst and second inlet valves fluidly coupled between the fluid drainage passageway and the first and second fluid drainage receptacles, respectively, wherein negative pressure is delivered from the vacuum source to the first drainage receptacle and the fluid drainage passageway when the first inlet valve is open and the second inlet valve is closed, and to the second drainage receptacle and the fluid drainage passageway when the second inlet valve is open.2. The apparatus of claim 1 , wherein the inlet valves are pinch valves.3. The apparatus of claim 1 , further comprising a controller electrically coupled to the first and second inlet valves claim 1 , the controller configured to select which of the first and second fluid drainage receptacles receives fluid from fluid drainage passageway.4. The apparatus of claim 3 , further comprising a first sensor coupled to the first fluid drainage receptacle to provide a signal to the controller indicative of an amount of fluid in the first fluid drainage receptacle.5. The apparatus of claim 4 , further comprising a second sensor coupled to the second drainage receptacle to provide a signal to the controller indicative of an amount of fluid in the second fluid drainage receptacle.6. The ...

Sub-atmospheric wound-care system

Methods and systems are provided for a sub-atmospheric wound-care (SAWS) system for treating an open wound. The SAWS system includes a regulated vacuum source for developing a negative pressure, a flow rate meter configured to measure a flow rate of liquid removed from the wound, a primary pressure regulating sensor located proximate the wound for directly measuring the negative pressure at the wound, a backup pressure regulating sensor located vacuum tube, a porous dressing suitable to be sealed airtight which is positioned within a wound interface chamber, a collection canister configured to collect said liquid removed from the wound, and an adapter configured to use wall suction a primary regulated vacuum source.

System and Method to Vent Gas from a Body Cavity

One aspect of the invention is a method to vent gas from a body cavity during an endoscopic procedure. A body cavity is in fluid communication with an exhaust gas inlet of a vacuum break device. The vacuum break device has a chamber in fluid communication with both the inlet and an outlet. The chamber may comprise one or more openings in fluid communication with the atmosphere. A conduit in fluid communication with the exhaust gas outlet may be connected directly or indirectly to a suction source. The suction source may be activated. 113-. (canceled)14. A system for venting gas from a body cavity during an endoscopic procedure , comprising:a trocar having an outlet port in fluid communication with the body cavity; an exhaust gas inlet operable to receive gas that has traveled at least through the outlet port of the trocar;', 'a chamber being both in fluid communication with the exhaust gas inlet and in fluid communication with an exhaust gas outlet;', 'a first valve;, 'a vacuum break device, comprisingwherein the chamber further comprises at least one opening in fluid communication with both the chamber and the atmospheric air where the endoscopic procedure is taking place and wherein the first valve is operable to at least partially obstruct the at least one opening resulting in an increase in gas flow rate within a fluid flow path between the outlet port of the trocar and the exhaust gas inlet due to increased vacuum pressure within the chamber; anda suction source coupled directly or indirectly to the exhaust gas outlet and operable to draw gas from the chamber.15. The system of claim 14 , wherein the outlet port of the trocar is in fluid communication with the peritoneal cavity of a patient.16. The system of claim 14 , wherein the vacuum break device further comprises protective structure over the at least one opening to reduce the probability of clogging the at least one opening.17. The system of claim 14 , further comprising:a second valve in the fluid flow ...

INTEGRATED SYSTEM FOR ASSESSING WOUND EXUDATES

An integrated system for assessing wound exudates from the wound of a patient is described. The system may contain functionality to detect, process and report various wound parameters. The system also may make treatment determinations based on these findings. The system may detect one or more physiological values of the wound exudates from the wound of the patient. The system may means for comparing the one or more detected physiological values to predetermined physiological values in order to obtain a comparison result in real time. The system may include a processor which provides an electronic signal based on a comparison result in which the electronic signal may correspond to guidelines for treating the wound . The system may be integrated with other wound treatment devices, such as negative pressure wound therapy devices (NPWT) 1. A system for assessing wound exudate from a wound of a patient , said system comprising:a wound treatment device;detecting means for detecting one or more values of one or more physiological parameters of the wound exudate;analyzing means for analyzing the values of the one or more physiological parameters so as to obtain an assessment of the wound exudate; andproviding means for providing a treatment guideline based on the assessment; andin which the wound treatment device, the detecting means, the analyzing means, and the providing means are integrated.2. The system of claim 1 , in which the wound treatment device is a negative wound pressure therapy device.3. The system of claim 2 , further comprising controlling means for controlling the negative pressure wound therapy device using the treatment guideline.4. The system of claim 1 , in which the wound treatment device is a dressing or a bandage.5. The system of claim 1 , further comprising integrating means.6. The system of claim 5 , in which the integrating means in the dressing or bandage includes an electrical trace.7. The system of claim 1 , in which the providing means is ...

FLUID JET CELL HARVESTER AND CELLULAR DELIVERY SYSTEM

An ultrasonically pulsating high-pressure fluid jet coupled with a suction system serve as a tissue harvesting device. The pulsated fluid jet disrupts tissue, permitting both harvesting of cells for therapeutic delivery, and as a surgical dissector and aspirator, for liposuction, soft tissue dissection, etc. The jet is delivered to the target tissue through a cannula, coupled to an aspiration system. An ultrasonically actuated rod vibrates within the cannula engaging a nozzle, disrupting the fluid jet into droplets, permitting tuning of the jet to the resonant frequencies and impact pressures necessary to dissociate the target tissue. A suction recovery system may be separated or integrally formed with the fluid jet cannula, and is linked by a closed tubing system appropriate for sterilization and subsequent delivery of the harvested cells/tissues with or without growth factor or matrix addition for human re-implantation or for in vitro expansion for later re-implantation. 1100. An ultrasonically pulsated waterjet system () comprising:{'b': 102', '202', '210', '212', '204, 'a handpiece apparatus () comprising a handpiece body member () having opposite distal () and proximal () ends and defining an elongate longitudinal passageway () extending therein, the elongate passageway forming a nozzle terminating in an elongate pressure tube exiting the handpiece body portion at a distal end thereof;'}{'b': 230', '206', '204', '202', '204, 'a fluid port () comprising a coupling member () configured to selectively connect the passageway () of the handpiece body member () with an associated source (C, D) of a pressurized fluid for selectively permitting the pressurized fluid to flow into the passageway ();'}{'b': 104', '210', '202', '106', '104', '104', '104', '202, 'an elongate delivery tube apparatus () extending from the distal end () of the handpiece body member () to a working tip portion () of the delivery tube apparatus (), the delivery tube apparatus () defining an ...

ORAL APPLIANCE WITH AUTO NEGATIVE PRESSURE CONTROL AND METHOD THEREOF

A method for automatically controlling negative pressure supplied in oral cavity, for relieving sleep apnea and snoring is provided. The method includes: sensing a physiological signal from the user and outputting the sensed physiological signal; extracting a physiological status based on said sensed physiological signal; and automatically controlling said negative pressure provided to the user's oral cavity based on said physiological status. 1. An oral appliance with automatic negative pressure control , comprising:a sensing unit, for sensing a physiological signal from a user and outputting said sensed physiological signal;a physiological status extraction unit, coupled to said sensing unit, for extracting a physiological status based on said sensed physiological signal from said sensing unit;a negative pressure source, for providing a negative pressure;an oral interface, for connecting said negative pressure source and interfacing with oral cavity, anda negative pressure control unit, coupled to said physiological status extraction unit and said negative pressure source, for automatically controlling said negative pressure source based on said physiological status provided from said physiological status extraction unit.2. The oral appliance as in claim 1 , wherein said sensing unit includes at least one or any combination of a body position sensor claim 1 , an accelerator claim 1 , a gravity sensor claim 1 , a tilt sensor claim 1 , a motion sensor claim 1 , electrodes claim 1 , a microphone claim 1 , a piezo-transducer claim 1 , a pressure sensor claim 1 , an oximeter claim 1 , a CO2 sensor claim 1 , a thermistor claim 1 , a hotwire claim 1 , a flow sensor claim 1 , a respiratory inductive plethysmograph claim 1 , a strain gauge and an impedance pneumograph.3. The oral appliance as in claim 1 , wherein:said physiological status extraction unit determines the user's body position in upright, supine, prone or side posture.4. The oral appliance as in claim wherein: ...

Surgical Instrument Aspiration Valve

A surgical instrument includes a movable member having a proximal portion, the movable member defining an opening at the proximal portion. The instrument includes a stationary member defining an aperture. The stationary member is arranged relative to the movable member with a close fit between the stationary member and the movable member such that aspiration occurs through the movable member substantially only during a portion of a repetitive motion of the movable member. The instrument includes a surgical handpiece coupled to the movable member and the stationary member to provide suction and motion to the movable member. A method of regulating aspiration through a surgical instrument includes providing a close fit between a moving member having an opening at a proximal portion and a stationary member having an aperture such that aspiration occurs through the moving member substantially only during a portion of a repetitive motion of the movable member. The moving member and the stationary member are coupled to a surgical handpiece to provide suction and motion to the moving member. 1. A method comprising:suctioning fluid through a lumen of a surgical instrument; andautomatically, intermittently, substantially closing off an opening in fluid communication with the lumen at a proximal region of the lumen to limit fluid aspiration.2. The method of wherein the opening is in a shaft of the surgical instrument claim 1 , and automatically claim 1 , intermittently claim 1 , substantially closing off the opening comprises moving the shaft relative to a hub of the surgical instrument such that an aperture in the hub is intermittently out of alignment with the opening.3. The method of wherein moving the shaft comprises rotating the shaft.4. The method of wherein moving the shaft comprises reciprocating the shaft.5. The method of wherein moving the shaft comprises oscillating the shaft.6. The method of wherein the shaft defines a second opening and rotating the shaft causes ...

SYSTEM, METHOD, AND APPARATUS FOR REGULATING PRESSURE

Subject matter relating to pressure regulation is described. In one illustrative embodiment, an apparatus for regulating pressure may include a supply chamber, a control chamber, and a charging chamber. The supply chamber may have a supply port adapted for coupling to a supply lumen, and the control chamber may have a control port adapted for coupling to a feedback lumen. The charging chamber can be fluidly coupled to the supply chamber through a charging port. A regulator valve within the control chamber can operate to control fluid communication through the charging port based on a differential between pressure in the control chamber and a target pressure. 1. A reduced-pressure treatment system comprising:a dressing;a supply chamber fluidly coupled to the dressing through a supply lumen;a control chamber fluidly coupled to the dressing through a feedback lumen;a charging chamber fluidly coupled to the supply chamber through a port; anda regulator valve within the control chamber and operable to reciprocate within the control chamber to control fluid communication through the port based on a differential between a control pressure in the control chamber and a therapy pressure.2. The reduced-pressure treatment system of claim 1 , further comprising a reduced-pressure source fluidly coupled to the charging chamber.3. The reduced-pressure treatment system of claim 1 , wherein a first pressure in the charging chamber is less than a second pressure in the supply chamber.4. The reduced-pressure treatment system of claim 1 , wherein a first pressure in the charging chamber is less than a second pressure in the supply chamber claim 1 , and the second pressure in the supply chamber is less than ambient pressure.5. The reduced-pressure treatment system of claim 1 , wherein the regulator valve comprises a piston and an elastic member adapted to bias the piston against ambient pressure in the control chamber.6. The reduced-pressure treatment system of claim 1 , wherein:the ...

ADAPTIVE ALGORITHM FOR THORACIC DRAINAGE THERAPY

Devices and to methods for thoracic drainage for a patient having an air fistula. A vacuum is produced in the pleural cavity of the patient by means of a suction device. In order to adjust the vacuum on the basis of objective criteria, a suitable size measure for the air fistula is determined and the vacuum produced by the suction device is controlled according to said size measure. An adaptive algorithm includes: (a) determining a first value of a size measure for the air fistula; (b) changing the vacuum by a first difference value; (c) determining a second value of the size measure after a first waiting period; (d) changing the vacuum by a second difference value having the opposite sign if the second measure is greater than the first measure; (e) repeating steps (a) to (d) after a second waiting period. 1. An appliance for thoracic drainage in patients with an air fistula , said appliance comprising:a suction device for generating a vacuum;a control device for controlling the suction device; andat least one measuring device, which allows the control device to determine a size parameter for the air fistula, wherein the control device is configured to regulate the level of the vacuum generated by the suction device as a function of said size parameter.2. The appliance according to claim 1 , wherein the control device is configured to carry out a method having the following steps:(a) determining a first value of the size parameter;(b) changing the vacuum by a first differential value;(c) determining a second value of the size parameter after a first waiting period;(d) changing the vacuum by a second differential value, which has an opposite sign compared to the first differential value, if the second value of the size parameter is greater than the first value of the size parameter;(e) repeating steps (a)-(d) after a second waiting period.3. The appliance according to claim 2 , wherein the first differential value has an absolute value of between 2 and 10 mbar.4. The ...

Apparatus and Method for Cardiac Tissue Modulation by Topical Application of Vacuum to Minimize Cell Death and Damage

A method and apparatus are provided for treating cardiac tissue to modulate ischemic heart tissue with topical sub-atmospheric pressure to minimize cell death and damage.

Sustained variable negative pressure wound treatment and method of controlling same

Disclosed herein are systems and methods for providing reduced or negative pressure, and more particularly cyclical reduced pressure, to treat a wound. The system can include a wound dressing, a fluid collection container, a suction source, filters, and conduits. In addition, the system can include a control device and sensors. The sensors may be configured to monitor certain physiological conditions of a patient such as temperature, pressure, blood flow, blood oxygen saturation, pulse, cardiac cycle, and the like. Application of cyclical reduced pressure between two or more values below atmospheric pressure may be synchronized with the physiological conditions monitored by the sensors. Certain embodiments of the system utilize an air reservoir and one or more valves and pressure sensors or gauges to allow for rapid cycling of the level of reduced pressure within the wound dressing between two or more reduced pressure values.

APPARATUS, SYSTEM AND METHOD FOR MANIPULATING A SURGICAL CATHETER AND WORKING DEVICE WITH A SINGLE HAND

Systems and methods are disclosed that include a guide catheter apparatus insertable through a external body passage of a subject. The guide catheter apparatus includes a substantially rigid shaft and a handle. The shaft has a proximal opening, a distal opening, and a lumen extending between the proximal opening and the distal opening. The handle has a structure to allow a position of the guide catheter to be controlled by some or all of three fingers of one hand of an operator of the handle. The structure of the handle is adapted to permit the operator to position a thumb and index finger of the hand to manipulate a working device inserted into the lumen of the guide catheter, where the working device is manipulable via a portion of the working device immediately adjacent to the handle. 1. A surgical catheter adapted to facilitate manipulation of a guide and a working device with a single hand , the surgical catheter comprising:a handle having an upper portion and a lower portion;the upper portion of the handle having a working-device opening at a proximal end thereof and a guide coupling at a distal end thereof;the lower portion of the handle having a handle coupling extending therefrom and concavities on a surface thereof, the concavities being disposed between the handle coupling and the guide coupling to facilitate gripping of the handle by fingers of one hand of an operator of the handle, the handle coupling being configured to couple to a source of suction;a guide having a proximal guide opening at a proximal end, a distal guide opening at a distal end, and a guide duct extending from the proximal guide opening to the distal guide opening, the proximal end of the guide having at least three protrusions around a periphery thereof and spaced from the proximal guide opening, the proximal end of the guide being configured to be inserted into the guide coupling such that the at least three protrusions are at least partially inserted into the guide coupling;a Y- ...

CANISTER FOR A NEGATIVE PRESSURE WOUND THERAPY SYSTEM

A portable negative pressure wound therapy system includes a dressing assembly for positioning over a wound to apply a negative pressure to the wound and a canister assembly. The canister assembly includes a control unit having a vacuum source and a controller and a collection canister in communication with the dressing assembly operable to receive fluid from the wound. The collection canister has a filter assembly having a filter and a passageway between the filter and a wall of the collection canister. The collection canister also includes a canister interface having a suction port, an inlet port, and a channel. The vacuum source draws air through the suction port from the channel which draws air from the passageway connected to the channel, the air in the passageway is drawn from the collection canister through the filter, and the air in the collection canister is drawn through the inlet port. 1. A portable negative pressure wound therapy system comprising:a dressing assembly for positioning over a wound to apply a negative pressure to the wound; and a control unit having a vacuum source and a controller; and', 'a collection canister in communication with the dressing assembly operable to receive fluid from the wound, the collection canister including:', 'a filter assembly having a first filter and a second filter at opposing ends of said collection canister;', 'a first passageway between said first filter and a wall of said collection canister;', 'a second passageway between said second filter and a wall of said collection canister; and', 'a canister interface having a suction port, an inlet port, and a channel,', 'said vacuum source draws air through said suction port from said channel, said air is drawn through said channel from said first passageway and said second passageway which are operatively connected to said channel, said air in said first passageway is drawn through said first filter and said air in said second passageway is drawn through said second ...

SUSTAINED VARIABLE NEGATIVE PRESSURE WOUND TREATMENT AND METHOD OF CONTROLLING SAME

Disclosed herein are systems and methods for providing reduced or negative pressure, and more particularly cyclical reduced pressure, to treat a wound. The system can include a wound dressing, a fluid collection container, a suction source, filters, and conduits. In addition, the system can include a control device and sensors. The sensors may be configured to monitor certain physiological conditions of a patient such as temperature, pressure, blood flow, blood oxygen saturation, pulse, cardiac cycle, and the like. Application of cyclical reduced pressure between two or more values below atmospheric pressure may be synchronized with the physiological conditions monitored by the sensors. Certain embodiments of the system utilize an air reservoir and one or more valves and pressure sensors or gauges to allow for rapid cycling of the level of reduced pressure within the wound dressing between two or more reduced pressure values. 115.-. (canceled)16. A method of operating a negative pressure wound therapy apparatus , the method comprising:applying, via a fluid flow path, reduced pressure from a suction source to a wound dressing placed over a wound;monitoring a temperature at the wound using a sensor positioned at least partly in the wound or the wound dressing or positioned adjacent to the wound dressing; andadjusting the reduced pressure from the suction source by cycling the reduced pressure from the suction source between two different negative pressure values according at least to the temperature at the wound.17. The method of claim 16 , wherein said adjusting comprises adjusting a frequency of the reduced pressure from the suction source according at least to the temperature at the wound.18. The method of claim 16 , wherein said adjusting comprises adjusting the reduced pressure from the suction source in response to determining that the temperature at the wound satisfies a threshold.19. The method of claim 16 , wherein said adjusting comprises adjusting the ...

SYSTEM AND METHOD FOR LOCATING FLUID LEAKS AT A DRAPE OF A REDUCED PRESSURE DELIVERY SYSTEM

A system and method for performing tissue therapy may include applying a reduced pressure to a tissue site, sensing a fluid parameter being applied to the tissue site, generating a fluid sensor signal in response to sensing the fluid parameter, and altering the fluid sensor signal in response to sensing that the fluid parameter changes. A fluid leak location mode may be entered. In response to the fluid leak location mode being entered, a graphical user interface that provides for fluid leak location functionality may be displayed. In one embodiment, the fluid leak location mode may be automatically entered in response to the sensor signal crossing a threshold value. Additionally, an alarm signal may be generated in response to determining that the fluid sensor signal crosses the threshold value. 1. An apparatus for detecting leaks at a tissue site , comprising:a drape configured for positioning over the tissue site to form a sealed space between the tissue site and the drape for receiving a reduced pressure;a fluid sensor in fluid communication with the sealed space and configured to sense a fluid parameter that changes within the sealed space and to generate a fluid sensor signal in response to sensing the fluid parameter;a processing unit configured to receive the fluid sensor signal and to enter a fluid leak location mode in response to the fluid sensor signal crossing a threshold value; andan electronic display in communication with the processing unit and configured to provide a graphical user interface for displaying output related to the fluid leak location mode.2. The apparatus according to claim 1 , wherein the fluid sensor is an airflow sensor.3. The apparatus according to claim 1 , wherein the fluid sensor is a pressure sensor.4. The apparatus according to claim 1 , further comprising a speaker in communication with the processing unit claim 1 , wherein the processing unit is further configured to communicate a fluid leak location signal to the speaker ...

THROMBUS ASPIRATION WITH DIFFERENT INTENSITY LEVELS

Vascular treatment devices and methods include a woven structure including a plurality of bulbs that may be self-expanding, a hypotube, for example including interspersed patterns of longitudinally spaced rows of kerfs, and a bonding zone between the woven structure and the hypotube. The woven structure may include patterns of radiopaque filaments measureable under x-ray. Structures may be heat treated to include various shapes at different temperatures. The woven structure may be deployable to implant in a vessel. A catheter may include a hypotube including interspersed patterns of longitudinally spaced rows of kerfs and optionally a balloon. Laser cutting systems may include fluid flow systems. 1. A system for facilitating aspiration of a thrombus in a vessel , the system comprising:an automated motor pump configured to facilitate aspiration of the thrombus, the automated motor pump comprising an external control panel configured to receive input from an operator; andpower electronics configured to power and control the automated motor pump to generate a plurality of suction patterns having a plurality of intensity levels, a first intensity level having a first negative pressure between 100 and 350 mm Hg;', 'a second intensity level having a second negative pressure between 351 and 550 mm Hg; and', 'a third intensity level having a third negative pressure between 551 and 769 mm Hg; and, 'wherein the plurality of intensity levels compriseswherein a first crescendo suction pattern of the plurality of suction patterns comprises a repetitive cycle comprising the first intensity level for a first duration, the second intensity level for a second duration after the first duration, and the third intensity level for a third duration after the second duration.2. The system of :wherein the first duration, the second duration, and the third duration are each between 1 and 30 seconds; andwherein a total duration of the repetitive cycle of the first crescendo suction pattern ...

THROMBUS ASPIRATION USING AN OPERATOR-SELECTABLE SUCTION PATTERN

Vascular treatment devices and methods include a woven structure including a plurality of bulbs that may be self-expanding, a hypotube, for example including interspersed patterns of longitudinally spaced rows of kerfs, and a bonding zone between the woven structure and the hypotube. The woven structure may include patterns of radiopaque filaments measureable under x-ray. Structures may be heat treated to include various shapes at different temperatures. The woven structure may be deployable to implant in a vessel. A catheter may include a hypotube including interspersed patterns of longitudinally spaced rows of kerfs and optionally a balloon. Laser cutting systems may include fluid flow systems. 1. A system for facilitating aspiration of a thrombus in a vessel using an operator-selectable suction pattern , the system comprising:an automated motor pump configured to facilitate aspiration of the thrombus, the automated motor pump comprising an external control panel configured to receive input from an operator; andpower electronics configured to power and control the automated motor pump to generate a plurality of variable suction patterns having a plurality of intensity levels, a first intensity level having a first negative pressure; and', 'a second intensity level having a second negative pressure,', 'wherein the first negative pressure is between 551 and 769 mm Hg, and', 'wherein the first negative pressure is more negative than the second negative pressure;, 'wherein the plurality of intensity levels compriseswherein a first variable suction pattern of the plurality of variable suction patterns comprises a repetitive cycle comprising the first intensity level for a first duration and the second intensity level for a second duration after the first duration,wherein the first duration and the second duration are each between 1 and 30 seconds, andwherein a total duration of the repetitive cycle of the first variable suction pattern is between 1 minute and 15 ...

DEVICE AND METHOD FOR WOUND THERAPY

A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier. 158-. (canceled)59. A method of treating a wound , comprising:positioning a wound therapy device over a wound area and an area of intact skin adjacent to the wound area at least partially enclosing the wound area, the wound therapy device comprising:a moisture vapor permeable cover layer,an absorbent layer positioned beneath the cover layer, anda wound contact layer beneath the absorbent layer, the wound contact layer adhered to the moisture vapor permeable cover layer; andapplying negative pressure to the wound therapy device such that negative pressure is transmitted through the absorbent layer and the wound contact layer to the wound area and to the intact skin adjacent to the wound area at least partially enclosing the wound area.60. The method of treating a wound of claim 59 , wherein the wound therapy device comprises silicone.61. The method of treating a wound of claim 60 , wherein the wound contact layer comprises silicone.62. The method of treating a wound of claim 59 , wherein the moisture vapor permeable cover layer is adhered to the wound contact layer.63. The method of treating a wound of claim 59 , wherein the absorbent layer comprises a superabsorbent.64. The method of treating a wound of claim 59 , wherein negative pressure is provided by a negative pressure source.65. The method of treating a wound of claim 64 , wherein the negative pressure source is external to the moisture vapor permeable cover layer.66. The method of treating a wound of claim 64 , wherein the negative pressure ...

Suction Device for Surgical Instruments

A suction device is shown and described. The suction device includes a body, an input port configured to receive a flow of matter, a suction port, and a suction lumen that couples the suction port to the input port. In some embodiments the suction device is configured to couple with a surgical instrument for use in a surgical procedure.

VACUUM TRANSFER TOOL FOR EXTENDABLE CATHETER

An aspiration catheter is provided including a proximal section and a distal section extendable through the proximal section. A vacuum transfer tool may be coupled to a proximal end of the proximal section. The vacuum transfer tool may include a proximal transfer tube and a distal transfer tube, each having an aspiration port in communication with a vacuum source. The proximal transfer tube may be removably received within a proximal end of the distal transfer tube. The distal section of the catheter may be inserted into the proximal section through the proximal transfer tube. The proximal transfer tube may maintain a vacuum around the proximal end of the distal section of the catheter such that when the distal section is removed by decoupling the proximal and distal transfer tubes, the vacuum within the distal transfer tube and proximal section of the catheter is maintained, preventing the escape of any clots. 1. A vacuum transfer tool for maintaining a vacuum within an extendable catheter , the vacuum transfer tool comprising:a proximal transfer tube comprising a proximal end, a distal end, a lumen extending from the proximal end to the distal end, and an aspiration port in fluid communication with the lumen, the aspiration port being positioned between the proximal end and the distal end;a distal transfer tube comprising a proximal end, a distal end, a lumen extending from the proximal end to the distal end, and an aspiration port in fluid communication with the lumen, the aspiration port being positioned between the proximal end and the distal end;wherein the distal end of the proximal transfer tube is removably connectable to the proximal end of the distal transfer tube;wherein the distal end of the distal transfer tube is directly or indirectly connectable to a proximal end of a catheter;wherein the proximal end of the proximal transfer tube comprises a proximal sealing port configured to receive and form a fluid seal around an extendable catheter segment; ...

WOUND DRESSING WITH VACUUM RESERVOIR

A wound dressing apparatus includes a wound dressing member dimensioned for positioning relative to a wound bed. The wound dressing member including an internal vacuum reservoir and has a port in communication with the vacuum reservoir for applying subatmospheric pressure to the vacuum reservoir to facilitate removal of fluid from the wound bed. The wound dressing member includes a visual pressure indicator associated therewith for indicating a level of pressure within the vacuum reservoir. The visual pressure indicator includes color indicia having a plurality of colors corresponding to a condition of the pressure within the vacuum reservoir. The wound dressing member includes a lower absorbent member positionable adjacent the wound bed and an upper member which at least partially defines the vacuum reservoir. At least one of the top member and the lower absorbent member has the visual pressure indicator mounted thereto. 114-. (canceled)15. A wound dressing apparatus for use in negative pressure wound therapy , the wound dressing apparatus comprising: a wound contact layer configured to be in direct contact with a wound;', 'a wound cover layer configured to be positioned over the wound, wherein the wound cover layer defines an internal vacuum reservoir when the wound cover layer is positioned over the wound; and', 'an absorbent layer positioned between the wound contact layer and the wound cover layer; and, 'a wound dressing, the wound dressing comprisinga visual indicator configured to indicate a condition of the wound dressing, wherein the visual indicator comprises one or more light emitting sources positioned within a periphery of the wound cover layer of the wound dressing.16. The wound dressing apparatus according to claim 15 , wherein the visual indicator comprises a color indicator.17. The wound dressing apparatus according to claim 15 , further comprising a vacuum pump configured to provide negative pressure to the reservoir.18. The wound dressing ...

Instillation cartridge for vacuum actuated fluid delivery

A fluid delivery system, method, and apparatus for providing instillation therapy with a negative-pressure source is described. The apparatus includes a housing having an ambient chamber and a negative-pressure chamber fluidly isolated from each other. The apparatus also includes a moveable barrier disposed in the housing between the ambient chamber and the negative-pressure chamber. The moveable barrier is operable to move between a charge position and a discharge position in response to negative pressure. A fluid source is disposed in the negative-pressure chamber and is collapsible in response to movement of the moveable barrier to the discharge position. The apparatus also includes a fluid outlet in fluid communication with the fluid source, a negative-pressure port in fluid communication with the negative-pressure chamber and configured to be coupled to a negative-pressure source, and a vent formed in the housing and fluidly coupled to the ambient chamber.

INSTILLATION CARTRIDGE AND THERAPY SYSTEM FOR NEGATIVE-PRESSURE THERAPY AND INSTILLATION THERAPY

Systems, methods, and apparatuses for providing installation therapy and negative-pressure therapy are described. The apparatus includes a housing and a moveable barrier disposed in the housing to form a dosing chamber and a pressure chamber. The apparatus also includes a therapy conduit configured to be fluidly coupled to a pressure source and to a canister. The apparatus further includes a fluid inlet fluidly coupled to the dosing chamber and configured to be fluidly coupled to a fluid source and a fluid outlet fluidly coupled to the dosing chamber and configured to be fluidly coupled to a dressing. A pressure inlet is fluidly coupled to the therapy conduit and the pressure chamber; and a check valve is disposed in the therapy conduit.

Negative-Pressure Oral Apparatus and Method for Maintaining Negative Oral Pressure and Collecting Liquid

The present invention discloses a negative-pressure oral apparatus capable of relieving discomfort of soft tissues in the oral cavity and improving fixation of the oral apparatus to prevent the oral apparatus from falling off due to mouth opening. The oral apparatus is compact and elastic so that it fits various shapes and sizes of the oral cavity and is easy to be put on and taken off to provide convenience and safety to the user. In another embodiment, a method for maintaining a negative oral pressure and collecting liquid by coupling the oral apparatus to a liquid collecting apparatus capable of effectively providing the oral cavity with a negative pressure to expel liquid in the oral apparatus and deliver the liquid to an absorbing element in the liquid collecting apparatus so as to prevent liquid leakage or contamination. 179-. (canceled)80. A negative-pressure oral apparatus for alleviating snoring and obstructive sleep apnea of a user , comprising:an oral interface insertable in an oral cavity of the user, wherein the oral interface defines a fluid passage configured to be in fluid communication with the oral cavity of the user when the oral interface is inserted in the oral cavity of the user;a source of negative pressure in fluid communication with the fluid passage of the oral interface, wherein the source of negative pressure is configured to generate negative pressure within the oral cavity of the user via the oral interface in use;a liquid-collecting container in fluid communication with the passage of the oral interface and the source of negative pressure; anda control unit in electrical communication with the source of negative pressure, wherein the control unit is configured to control operation of the source of negative pressure,wherein the oral interface, the source of negative pressure, and the control unit are operable to draw a soft palate of the user forward toward the front of the oral cavity in use,wherein the liquid-collecting container is ...

CUSTOMIZABLE CLOSED TISSUE SITE DRESSING FOR IMPROVED POSTOPERATIVE REMOVAL

Some illustrative embodiments of a dressing for treating a tissue site may include a fluid hub, a plurality of elongate fluid members, and a separable joint. The plurality of elongate fluid members may be positioned in fluid communication with the fluid hub. Each of the plurality of elongate fluid members may include a proximal end, a distal end, and an elongate side between the proximal end and the distal end. The elongate side of the elongate fluid members may extend longitudinally outward from the fluid hub. The separable joint may be coupled between the elongate side of one of the plurality of elongate fluid members and the elongate side of another of the plurality of elongate fluid members. Other dressings, systems, and methods are disclosed. 130.-. (canceled)31. A dressing for treating a tissue site , comprising:a fluid hub;a plurality of elongate fluid members positioned in fluid communication with the fluid hub, each of the plurality of elongate fluid members comprising a proximal end, a distal end, and an elongate side between the proximal end and the distal end, the elongate side extending outward from the fluid hub; anda separable joint coupled between the elongate side of one of the plurality of elongate fluid members and the elongate side of another of the plurality of elongate fluid members.32. The dressing of claim 31 , further comprising a pneumatic connector positioned in fluid communication with the plurality of elongate fluid members.33. The dressing of claim 32 , wherein the fluid hub and the plurality of elongate members are adapted to be positioned at the tissue site claim 32 , and wherein the pneumatic connector is adapted to extend through an external opening of the tissue site.34. The dressing of claim 31 , wherein the proximal end or the distal end of the plurality of elongate fluid members is coupled to the fluid hub.35. The dressing of claim 31 , wherein each of the plurality of elongate fluid members further comprises at least one fluid ...

WOUND CLOSURE AND DRAINAGE SYSTEM

A vacuum system for draining an open wound from liquids exuded therefrom, comprising an enclosure sealable to the wound circumference, a vacuum pump including a disposable pump unit detachably attachable to a non-disposable drive unit, and a waste container for collection of drained liquids. The enclosure has an outlet connected by means of a tube to an inlet of the pump unit and the waste container is connected to an outlet of the pump unit, such that when the vacuum pump is operated the drained liquids flow through the vacuum pump. The enclosure has one or more bleeding holes provided therethrough or adjacent to its outlet so that ambient air may enter the tube and flow together with the drained liquids. The enclosure and the waste container are disposable so that the drained liquids contact only disposable elements and may be disposed of together with all disposable elements 1the enclosure being attachable to a periphery of the wound so as to define a confined volume;the enclosure having an enclosure outlet connectable to said vacuum source via said tube so that negative pressure can be selectively created in said volume;the venting arrangement comprising a flow restrictor to restrict flow through said venting arrangement and to thereby provide a controlled flow of ambient air into said vacuum system upstream of the vacuum source;the controller configured for controlling operation of the vacuum source while providing venting of the vacuum system via said venting arrangement to provide a desired level of said negative pressure in said confined volume.. A vacuum system for applying negative pressure to a wound, the vacuum system comprising: an enclosure, a venting arrangement, a tube, a vacuum source, and a controller: This invention relates generally to wound healing, and more specifically to healing of wounds by negative pressure drainage.Negative pressure applied to a wound enhances drainage of fluids or exudate from the wound and promotes tissue growth and ...

BREAST PUMP SYSTEM WITH CONTROLLER

Systems and methods for pumping milk from a breast responsive to a controller, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure. 1. An automatic breast pump system , comprising:a flange sized and shaped to receive and surround a user's nipple;a pump mechanism configured to provide a suction pressure within the flange; anda controller associated with the pump mechanism and configured to control pump function;wherein the controller provides automatic, real time adjustments to maintain a target pressure within the breast pump system.2. The breast pump system of claim 1 , wherein the controller repeatedly measures and calculates pressure to vary suction pressure.3. The breast pump system of claim 1 , wherein the controller continuously measures and calculates pressure to vary suction pressure.4. The breast pump system of claim 1 , further comprising a sensor in communication with the controller to provide a control loop that is used to adjust suction pressure.5. The breast pump system of claim 4 , further comprising a compression member that creates the suction pressure claim 4 , wherein the control loop is used to adjust a position of the compression member to vary or maintain suction pressure.6. The breast pump system of claim 4 , further comprising a compression member that creates the suction pressure claim 4 , wherein the control loop is used to adjust a speed of the compression member to vary or maintain suction pressure.7. The breast pump system of claim 5 , further comprising a second compression member claim 5 , wherein the control loop is used to adjust a position of the second compression member to vary or maintain suction pressure.8. The breast pump system of claim 6 , further comprising a second compression member claim 6 , wherein the control loop is used to adjust a speed of the second compression member to vary or maintain suction pressure.9. The ...

WOUND TREATMENT APPARATUSES AND METHODS WITH NEGATIVE PRESSURE SOURCE INTEGRATED INTO WOUND DRESSING

Disclosed embodiments relate to apparatuses and methods for wound treatment. In some embodiments, a negative pressure source is incorporated into a wound dressing apparatus so that the wound dressing and the negative pressure source are part of an integral or integrated wound dressing structure that applies the wound dressing and the negative pressure source simultaneously to a patient's wound. The negative pressure source and/or electronic components may be positioned between a wound contact layer and a cover layer of the wound dressing. The negative pressure source and/or electronic components may be separated and/or partitioned from an absorbent area of the dressing. A switch may be integrated with the wound dressing to control operation of the wound dressing apparatus. A connector may be direct air from an outlet of the negative pressure source to the environment. A non-return valve may inhibit back flow of air into the wound dressing. 1. A wound dressing apparatus comprising:a wound contact layer configured to be positioned in contact with a wound; a lower spacer layer;', 'an absorbent layer;, 'a first area over the wound contact layer comprisinga second area over the wound contact layer comprising a plurality of spacer layers and a negative pressure source and/or electronic components positioned within or between the plurality of spacer layers, wherein the first area is positioned adjacent to the second area and separated by a partition;an upper spacer layer configured to cover the first area and the second area and to allow air to be communicated between the first area and second area around the partition; anda cover layer configured to cover and form a seal over the wound contact layer, the upper spacer layer, the first area, and the second area.2. The wound dressing apparatus of claim 1 , wherein the plurality of spacer layers in the second area comprise a third spacer layer beneath the negative pressure source and/or electronic components and a fourth ...

Instillation Cartridge For Vacuum Actuated Fluid Delivery

A fluid delivery system, method, and apparatus for providing instillation therapy with a negative-pressure source is described. The apparatus includes a housing having an ambient chamber and a negative-pressure chamber fluidly isolated from each other. The apparatus also includes a moveable barrier disposed in the housing between the ambient chamber and the negative-pressure chamber. The moveable barrier is operable to move between a charge position and a discharge position in response to negative pressure. A fluid source is disposed in the negative-pressure chamber and is collapsible in response to movement of the moveable barrier to the discharge position. The apparatus also includes a fluid outlet in fluid communication with the fluid source, a negative-pressure port in fluid communication with the negative-pressure chamber and configured to be coupled to a negative-pressure source, and a vent formed in the housing and fluidly coupled to the ambient chamber. 1. An apparatus for providing instillation therapy with a negative-pressure source , the apparatus comprising:a canister;a reservoir of fluid disposed in the canister, the reservoir of fluid being compressible in response to an application of negative pressure; anda fluid passage in fluid communication with the reservoir of fluid.2. The apparatus of claim 1 , further comprising a diaphragm disposed in the canister claim 1 , the diaphragm configured to divide the canister into a first chamber and a second chamber claim 1 , wherein the reservoir of fluid is disposed in the second chamber.3. The apparatus of claim 2 , wherein a portion of the diaphragm is operable to compress the reservoir of fluid in response to the application of negative pressure.4. The apparatus of claim 2 , wherein the diaphragm comprises a piston.5. The apparatus of claim 2 , wherein the diaphragm comprises a moveable barrier.6. The apparatus of claim 2 , further comprising a negative-pressure port in fluid communication with the second ...

PRESSURE CONTROL APPARATUS

Methods and apparatuses are disclosed for applying negative pressure to a wound site. In some embodiments, the apparatus comprises a source of negative pressure, a processing element, and a memory comprising instructions configured to, when executed on the processing element, cause the apparatus to attempt to generate, via the source of negative pressure, a desired negative pressure at the wound site. If the desired negative pressure has not been generated after a first predetermined period of time, the instructions cause the apparatus to: deactivate the source of negative pressure for a second predetermined period of time, and subsequently attempt to generate the desired negative pressure at the wound site. 138-. (canceled)39. A wound therapy apparatus comprising:a wound dressing configured to be positioned over a wound and absorb wound exudate;a pressure source configured to be in fluid communication with the wound dressing via a fluid flow path;a power source configured to power the pressure source;a pressure sensor configured to measure pressure in the fluid flow path;a button or a switch configured to receive user inputs from a user;a plurality of visual indicators; responsive to a first user input of the user inputs, activate the pressure source to attempt to generate a first level of negative pressure under the wound dressing,', 'responsive to a second user input of the user inputs, deactivate the pressure source,', 'maintain negative pressure under the wound dressing in a negative pressure range by repeatedly deactivating and activating the pressure source, and', 'with the plurality of visual indicators, separately indicate (i) a normal operating condition, (ii) a leak condition, (iii) a remaining capacity or life of the power source, and (iv) an end of life state in which the pressure source is permanently deactivated; and, 'a controller configured toa housing configured to support the pressure source, the power source, the pressure sensor, the plurality of ...

Fluid collection canister including canister top with filter membrane and negative pressure wound therapy systems including same

A fluid collection canister including a chamber to collect fluids and a canister top disposed over the chamber. The canister top includes a bottom side facing into the chamber, including first and second ribs disposed thereon, a filter membrane attached to the first and second ribs, a first port to communicate with the chamber and a pressure source external to the chamber, and a second port to communicate with the chamber and a sensor external to the chamber. The first port is in fluid communication with a first area, which is bounded by the filter membrane, the first and second ribs and the bottom side of the canister top. The second port is in fluid communication with a second area, which is bounded by the filter membrane, the second rib and the bottom side of the canister top.

Reversible Peristaltic Pump and Other Structures for Reflux in Eye Surgery

Devices, systems, and methods for treatment of an eye alter aspiration flow from the eye in response to an occlusion of the aspiration conduit pathway. Where aspiration is drawn from the eye using a volumetric pump, the pump can be reversed so as to induce fluid reflux from the aspiration conduit pathway into the eye to help clear the occlusion. The pump may vary the reverse flow in response to sensed aspiration pressure or the like, and the reverse flow may be halted before the pressure within the aspiration conduit pathway adjacent the eye significantly exceeds the irrigation fluid pressure and/or the pressure within the eye. Reflux may alternatively be generated by modulating a vent valve disposed between an irrigation conduit pathway and the aspiration conduit pathway. 112-. (canceled)13. An eye treatment method comprising:directing an irrigation flow into the eye through an irrigation conduit pathway;aspirating material from within the eye by drawing an aspiration flow through an aspiration conduit pathway;in response to an occlusion of the aspiration flow, the occlusion inducing a compliant reduction in volume of the aspiration conduit pathway, introducing fluid into the aspiration conduit pathway; andcontrolling the introduction of fluid into the aspiration conduit pathway in response to a pressure along the aspiration conduit pathway by changing the pump speed to provide a reduced reverse flow rate when the pressure in the aspiration conduit pathway is at atmospheric pressure and so that a maximum reflux pressure within the aspiration conduit pathway adjacent the eye is less than or substantially equal to an irrigation flow pressure adjacent the eye, and so that reflux into the eye is largely generated by momentum in the aspiration conduit pathway toward the eye.14. An eye treatment system comprising:an eye treatment probe;an eye treatment console having a controller and an aspiration pump drive; anda cassette coupling the probe to the controller, the ...

SYSTEMS AND METHODS FOR APPLYING REDUCED PRESSURE THERAPY

Embodiments of a reduced pressure system and methods for operating the system are disclosed. In some embodiments, the system can include one or more processors responsible for various functions associated with various levels of responsiveness, such as interfacing with a user, controlling a vacuum pump, providing network connectivity, etc. The system can present GUI screens for controlling and monitoring its operation. The system can be configured to determine and monitor flow of fluid in the system by utilizing one or more of the following: monitoring the speed of a pump motor, monitoring flow of fluid in a portion of a fluid flow path by using a calibrated fluid flow restrictor, and monitoring one or more characteristics of the pressure pulses. The system can be configured to provide external connectivity for accomplishing various activities, such as location tracking of the system, compliance monitoring, tracking of operational data, remote selection and adjustment of therapy settings, etc. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. An apparatus for applying negative pressure therapy to a wound , comprising:a source of negative pressure configured to be fluidically connected to a dressing configured to be placed over a wound, the source of negative pressure configured to deliver negative pressure wound therapy to the wound in accordance with a plurality negative pressure therapy parameters; and provide a graphical user interface (GUI) configured to permit adjustment of at least some of the plurality of negative pressure therapy parameters;', 'receive, via the GUI, a first adjustment of a first negative pressure therapy parameter;', 'adjust or cause adjustment of operation of the source of negative pressure based at least in part on the first adjustment of the first negative pressure therapy parameter;', 'record a plurality of historical data parameters associated with the plurality of negative pressure therapy parameters, ...

APPARATUS FOR ASPIRATING, IRRIGATING AND CLEANSING WOUNDS

An apparatus for cleansing wounds in which irrigant fluid from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing and a means for fluid cleansing and back to the dressing. The cleansing means (which may be a single-phase, e.g. microfiltration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The dressing and a method of treatment using the apparatus. 110-. (canceled)11. An apparatus for aspirating , irrigating and/or cleansing wounds , comprising:a conformable wound dressing having a backing layer configured to form a relatively fluid-tight seal or closure over a wound;an oxygen source configured to connect by a fluid supply tube to the wound dressing, wherein the fluid supply tube is configured to deliver oxygen to the wound;an inlet configured to connect to a negative pressure source; andat least one outlet tube for aspirating fluid from the wound.12. The apparatus of claim 11 , further comprising a negative pressure source configured to apply negative pressure to an interior of the wound dressing and to the wound.13. The apparatus of claim 11 , further comprising a controller configured to switch between a first setting where oxygen is delivered to the wound and a second setting where negative pressure is delivered to the wound.14. The apparatus of claim 11 , wherein the oxygen source comprises a dialysate.15. The apparatus of claim 14 , wherein the dialysate comprises a perfluorocarbon.16. The apparatus of claim 15 , wherein the perfluorocarbon is perfluorodecalin.17. The apparatus of claim 12 , wherein the negative pressure source comprises a vacuum pump.18. The apparatus of claim 13 , wherein oxygen is delivered to the wound for a predetermined amount of ...

DEVICE AND METHOD FOR WOUND THERAPY

A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier. 158-. (canceled)59. A wound therapy device , comprising:a moisture vapor permeable cover layer configured to cover a wound area and an area of body surface adjacent the wound area at least partially enclosing the wound area;a vacuum source configured to be in fluid communication with the cover layer;an absorbent layer positioned beneath the cover layer, the absorbent layer configured to retain wound exudate while simultaneously communicating negative pressure generated by the vacuum source to the wound area;a disperser layer positioned beneath or above the absorbent layer, the disperser layer configured to overlie the wound area and the area of body surface adjacent the wound area at least partially enclosing the wound area; anda wound contact layer beneath the disperser layer and the absorbent layer, the wound contact layer configured to overlie the wound area and the area of body surface adjacent the wound area at least partially enclosing the wound area.60. The wound therapy device of claim 59 , wherein the moisture vapor permeable cover layer is adhered to the wound contact layer.61. The wound therapy device of claim 59 , wherein the disperser layer comprises a three-dimensional knit spacer fabric.62. The wound therapy device of claim 59 , wherein the disperser layer comprises a hydrophobic material.63. The wound therapy device of claim 59 , wherein the disperser layer comprises an inner spacer yarn oriented perpendicular to a face fiber.64. The wound therapy device of claim 59 , wherein the ...

WOUND THERAPY DEVICE PRESSURE MONITORING AND CONTROL SYSTEM

A new system for negative pressure wound therapy is described. The system includes a patient tube set connecting the wound dressing to the suction container. The patient tube set provides separate channels for applying suction to the wound site and sensing the therapeutic pressure at the wound site. A restrictor valve may also be included in order to introduce a small air leak into the system to prevent occlusions in the patient tube set. 1. A wound therapy system comprising:a wound dressing;a pressure sensor;a container having an internal chamber;a vacuum source pneumatically associated with the internal chamber of the container; anda tube set comprising a first tube and a second tube positioned inside a lumen of the first tube, wherein a space between the first tube and the second tube forms a fluid channel, and wherein a lumen of the second tube forms a sensor channel in the tube set;wherein the wound dressing is pneumatically associated with the internal chamber of the container by the fluid channel of the tube set;wherein the wound dressing is pneumatically associated with the pressure sensor by the sensor channel of the tube set; andwherein a crushing force required to occlude the fluid channel is greater than a crushing force required to occlude a fluid channel of a comparison tube set that does not include a second tube positioned inside a lumen of the first tube.2. The wound therapy system of claim 1 , wherein the fluid channel and the sensor channel of the tube set are formed by a first tube and a second tube.3. The wound therapy system of claim 2 , wherein the second tube is formed within the first tube claim 2 ,wherein the sensor channel is a lumen of the second tube, andwherein the fluid channel is a space between the first tube and second tube.4. The wound therapy system of claim 2 , wherein the container has a first port comprising a first attachment and a second attachment;wherein a first end of the first tube is coupled to the wound dressing and a ...

Systems and methods for subcutaneous administration of reduced pressure employing reconfigurable lumens

Systems, method, and devices are disclosed that involve reconfiguring lumens or unblocking lumens relative to a blockage to maintain flow of reduced pressure to a subcutaneous tissue site. In one instance, a multi-lumen applicator includes an applicator body having a distal end and a proximal end and formed with a plurality of apertures for receiving fluid from the tissue site and for delivering reduced pressure, a first lumen fluidly coupled to the plurality of apertures, a first activation member having at least a closed position and a open position, and a second lumen fluidly coupled to the plurality of apertures but for the first activation member being in closed position. The configuration is such that when the first activation member is moved to the open position, the second lumen is fluidly coupled to the plurality of apertures. Other systems, methods, and devices are disclosed.

Aspiration systems

Thrombus aspiration may be performed using manual negative intermittent suction (e.g., provided by a syringe) or using an automated negative suction device (e.g., provided by a vacuum pump). The suction device may be connected through suction tubing to a hub of a catheter. The automated negative suction device may include an external control panel for the operator configured to allow the operator to choose from any of a plurality of suction patterns during an aspiration procedure.

METHODS OF ASPIRATING THROMBI

Methods of providing suction may include providing suction patterns having varying intensity levels, such as a “crescendo suction” pattern. Cycles of crescendo suction patterns may comprise variable intensities of negative suction in a crescendo pattern (such as a small intensity negative suction pressure, a medium intensity negative suction pressure, and a large intensity negative suction pressure). The suction patterns may include pauses or temporary stops to the negative suction pressure. 1. A method of aspirating thrombi using a varying suction pattern , comprising:inserting a distal end of a microcatheter within vasculature and advancing the distal end of the microcatheter to a location proximal to a thrombus;inserting a thrombectomy device to at least partially span the thrombus,applying suction to a proximal end of the microcatheter to aspirate the thrombus,wherein the suction applied comprises a repetitive pattern of varying suction intensity levels each applied for a particular time duration, wherein the repetitive pattern comprises three different suction intensity levels and at least one pause for a pause time duration,wherein applying suction to the proximal end of the microcatheter comprises causing an automated control unit to apply negative suction having the repetitive pattern, andwherein the at least one pause is at the end of the repetitive pattern such that there is a pause between each repetition of the repetitive pattern.2. The method of claim 1 , wherein the three different suction intensity levels each have a time duration between 1 and 30 seconds.3. The method of claim 1 , wherein the pause time duration is between 1 and 15 seconds.4. The method of claim 1 , wherein the time duration of a first suction intensity level of the repetitive pattern is longer than the time duration of a second suction intensity level of the repetitive pattern.5. (canceled)6. The method of claim 1 , wherein the repetitive pattern comprises a first suction intensity ...

Surgical Instrument Aspiration Valve

A surgical instrument includes a movable member having a proximal portion, the movable member defining an opening at the proximal portion. The instrument includes a stationary member defining an aperture. The stationary member is arranged relative to the movable member with a close fit between the stationary member and the movable member such that aspiration occurs through the movable member substantially only during a portion of a repetitive motion of the movable member. The instrument includes a surgical handpiece coupled to the movable member and the stationary member to provide suction and motion to the movable member. 1. A surgical instrument hub comprising:a body having a wall defining a longitudinal channel for receiving a moving member,the moving member having a distal portion distal the body and configured and arranged to contact tissue,the wall defining first and second apertures that overlay openings defined in a proximal portion of the moving member to define an aspiration valve configured to change a level of fluid communication between the first and second apertures and the openings in the moving member as the moving member moves,the first and second apertures defined in part by beveled edges for cutting tissue,the openings in the moving member rotating about an axis,the openings in the moving member switching between aligning with the first aperture and the second aperture to provide discontinuous flow from the distal portion through a bore in the moving member and out the first aperture and second aperture,a rotation of the moving member about the axis shearing tissue; andthe body including a coupling configured to connect the body to a handle.2. The surgical instrument hub of wherein the aspiration valve is configured to control aspiration substantially only during a portion of a repetitive motion of the movable member.3. The surgical instrument hub of wherein the first and second apertures are configured to intermittently overlay the openings in ...

Sequential Collapse Waveform Dressing

Example embodiments of an apparatus for tissue therapy may comprise a sequentially-collapsing tissue interface for use with negative pressure. More generally, some embodiments may include a first manifold and a second manifold fluidly coupled to the first manifold through a constricted fluid path. A fluid conductor may fluidly couple the second manifold to the first manifold in some embodiments. The fluid conductor may constrict fluid flow between the first manifold and the second manifold. The apparatus may additionally comprise a negative-pressure source fluidly coupled to the first manifold in some embodiments. A controller may be configured to operate a negative-pressure source to provide negative pressure to a tissue interface in a therapy sequence adapted to propagate a wave in the tissue site. Such motion may be particularly advantageous or beneficial for a variety of conditions, including lymphedema, edema, or venous insufficiency. 1. An apparatus for tissue therapy , comprising:a first manifold;a second manifold fluidly coupled to the first manifold; anda fluid conductor configured to constrict fluid flow between the first manifold and the second manifold.2. The apparatus of claim 1 , further comprising a negative-pressure source configured to be fluidly coupled to the first manifold.3. The apparatus of claim 2 , wherein the second manifold is configured to be coupled to the negative-pressure source through the first manifold.4. The apparatus of claim 2 , wherein the negative-pressure source is configured to provide negative pressure to the first manifold for a drawdown interval and a release interval.5. The apparatus of claim 1 , further comprising a cover configured to provide a fluid seal over the first manifold and the second manifold.6. The apparatus of claim 1 , further comprising a container fluidly coupled to the first manifold.7. The apparatus of claim 1 , wherein the first manifold includes a manifold face having a shape selected from the group ...

REDUCED-PRESSURE TREATMENT SYSTEMS WITH RESERVOIR CONTROL

A reduced-pressure system for delivering reduced pressure for medical purposes to a desired site and to receive fluids in one instance includes a reservoir having an interior space operable to contain the fluids. A reduced-pressure delivery conduit is placed in fluid communication with the interior space for delivering the reduced pressure to the desired site. A source conduit and a pressure sensor conduit are placed in fluid communication with the interior space. A pressure sensor is placed in fluid communication with the pressure sensor conduit. A reduced-pressure source is placed in fluid communication with the source conduit. A reduced-pressure control unit is associated with the pressure sensor and the reduced-pressure source and is operable to receive pressure data from the pressure sensor and supply data from the reduced-pressure source and to determine when a reservoir-full/blockage condition exists. Other systems and methods are presented. 1. A method of manufacturing a reduced-pressure system , the method comprising:forming a reservoir having an interior space operable to contain fluids;fluidly coupling a reduced-pressure source to the interior space;fluidly coupling a pressure sensor to the interior space;coupling the reduced-pressure source to a power line, the power line adapted to be coupled to a power supply;coupling a supply sensor to a portion of the power line, the supply sensor adapted to measure a supply signal correlated to a supply rate of reduced pressure;providing a reduced-pressure control unit operable to receive a pressure signal from the pressure sensor and the supply signal from the supply sensor, and to determine if a blockage condition exists based on the pressure signal and the supply signal; andassociating the reduced-pressure control unit with the pressure sensor, the supply sensor, and the reduced-pressure source.2. The method of manufacturing a reduced-pressure system of claim 1 , wherein providing a reduced-pressure control unit ...

REDUCED-PRESSURE TREATMENT SYSTEMS AND METHODS EMPLOYING A FLUIDLY ISOLATED PUMP CONTROL UNIT

Systems, devices, and methods for treating a tissue site on a patient with reduced pressure are presented. In one instance, a reduced-pressure treatment device to treat a tissue site with reduced pressure may include a pump control unit fluidly separate from a collection unit. Pump energy may be provided by the pump control unit to deflect one or more diaphragms within the collection unit to create reduced pressure. Other systems, devices, and methods are presented. 121.-. (canceled)22. A reduced-pressure treatment device for applying a reduced pressure to a tissue site , the reduced-pressure treatment device comprising:a pump head comprising a pump chamber, a diaphragm, and a magnetic member associated with the diaphragm; and provide an electromagnetic force operable to move the diaphragm to a first position; and', 'reverse the electromagnetic force to move the diaphragm to a second position., 'a pump control unit magnetically coupled to the pump head and comprising an electromagnet configured to23. The reduced-pressure treatment device of claim 22 , wherein the pump control unit is adapted to measure a displacement of the diaphragm.24. The reduced-pressure treatment device of claim 22 , further comprising one or more one-way valves disposed in the pump chamber.25. The reduced-pressure treatment device of claim 22 , wherein the pump chamber has a first volume when the diaphragm is in the first position and a second volume when the diaphragm is in the second position.26. The reduced-pressure treatment device of claim 25 , wherein the first volume is greater than the second volume.27. The reduced-pressure treatment device of claim 22 , wherein the magnetic member is configured to cycle the diaphragm between the first position and the second position.28. The reduced-pressure treatment device of claim 22 , wherein the electromagnet is fluidly isolated from the diaphragm.29. The reduced-pressure treatment device of claim 22 , further comprising a cover disposed between ...

Breast pump apparatus

A breast pump apparatus, the apparatus comprising at least one collection unit, a pump, the pump comprising a piston, and a chair, wherein the collection unit is in fluid communication with the pump, such that upon actuation the pump creates suction impulses which are transmitted, in use, to the user's breast via the collection unit, thereby expressing milk from the breast into the collection unit, and wherein the pump is connected to the chair, such that, in use, the relative movement of a first portion of the chair relative to the other parts of the chair, manually actuates and drives the piston of the pump.

REDUCED PRESSURE THERAPY APPARATUS CONSTRUCTION AND CONTROL

Embodiments of a negative pressure wound therapy systems and methods for operating the systems are disclosed. In some embodiments, a system includes a pump assembly, canister, and a wound dressing configured to be positioned over a wound. The pump assembly, canister, and the wound dressing can be fluidically connected to facilitate delivery of negative pressure to a wound. The pump assembly can present graphical user interface screens for controlling and monitoring delivery of negative pressure. The system can be configured to efficiently deliver negative pressure and to detect and indicate presence of certain conditions, such as low pressure, high pressure, leak, canister full, and the like. Monitoring and detection of operating condition can be performed by measuring one or more operational parameters, such as pressure, flow rate, and the like. 137-. (canceled)38. A negative pressure wound therapy apparatus comprising:a source of negative pressure configured to be fluidically connected by a fluid flow path to a wound dressing covering a wound, the source of negative pressure configured to aspirate fluid from the wound;a pressure sensor positioned in the fluid flow path and configured to measure a pressure in the fluid flow path; anda controller programmed to determine pressure at the wound based on combining the pressure in the fluid flow path measured by the pressure sensor with a level of activity of the source of negative pressure.39. The apparatus of claim 38 , wherein the controller is programmed to determine pressure at the wound based on subtracting a scaled level of activity of the source of negative pressure from the pressure in the fluid flow path measured by the pressure sensor.40. The apparatus of claim 39 , wherein the scaled level of activity comprises the level of activity multiplied by a constant.41. The apparatus of claim 38 , wherein the source of negative pressure comprises an actuator claim 38 , and wherein the level of activity of the source ...

SELF CONTAINED WOUND DRESSING APPARATUS

The composite wound dressing apparatus promotes healing of a wound via the use of a vacuum pump. The vacuum pump applies a vacuum pressure to the wound to effectively draw wound fluid or exudate away from the wound bed. The vacuum pump is tethered to the wound dressing and is portable, preferably, carried by the patient in a support bag, which permits patient mobility. Moreover, the patient does not need to be constrained for any period of time while exudate is being removed from the wound. 113.-. (canceled)14. A wound dressing comprising:a first layer and a second layer arranged in superposed relation, the first layer configured to be in direct contact with a wound and the second layer configured to absorb wound fluid, the second layer positioned over the first layer; and a pressure sensor configured to detect pressure within the wound dressing;', 'an oxygen sensor configured to detect an oxygen level of the wound; and', 'a temperature sensor configured to detect a temperature of the wound., 'a plurality of sensors incorporated into one or more of the first or second layers, the plurality of sensors comprising15. The wound dressing of claim 14 , wherein the oxygen sensor is further configured to detect an oxygen level adjacent the wound.16. The wound dressing of claim 14 , wherein the first layer comprises a plurality of perforations configured to allow unidirectional flow of the wound fluid toward the second layer.17. The wound dressing of claim 14 , wherein the second layer comprises an absorbent material.18. The wound dressing of claim 17 , wherein the absorbent material comprises a material selected from the group consisting of foams claim 17 , nonwoven composite fabrics claim 17 , cellulosic fabrics claim 17 , super absorbent polymers claim 17 , and combinations thereof.19. The kit comprising the wound dressing of and a vacuum pump configured to be fluidically connected to the wound dressing.20. The kit of claim 19 , further comprising a controller configured ...

System And Method For Determining A Fill Status Of A Canister Of Fluid In A Reduced Pressure Treatment System

A reduced pressure treatment system is provided that includes a canister that is fluidly connected to a tissue site and is configured to receive fluid drawn from the tissue site under the influence of a reduced pressure. A reduced pressure source provides the reduced pressure and is fluidly connected to the tissue site by a fluid communication path, which may include a source conduit, the canister, and a target conduit. A sensing device communicates with the source conduit and is configured to sense a pressure in the source conduit. A valve communicates with the source conduit and is configured to vent the reduced pressure. A processing unit communicates with the sensing device and the valve and is configured to open the valve for a selected amount of time, determine a decay of reduced pressure, and determine a fill status of the canister based on the decay of reduced pressure. 1. A reduced pressure treatment system comprising:a reduced-pressure source;a canister;a source conduit configured to fluidly couple the reduced-pressure source to the canister;a valve in communication with the source conduit; anda processing unit in communication with the valve, the processing unit configured to open the valve and to determine a fill-status of the canister based on a decay of reduced pressure in the source conduit after opening the valve.2. The system of claim 1 , wherein the fill-status indicates that the canister is full or is not full.3. The system of claim 2 , wherein the processing unit is further configured to signal a blockage alarm to indicate a blockage in a target conduit if the fill-status is not full.4. The system of claim 2 , wherein the processing unit is further configured to signal a canister-full alarm if the fill status of the canister is full.5. The system of claim 1 , wherein the processing unit is further configured to signal a blockage alarm if the reduced pressure does not decay to a pre-determined level within a selected amount of time after opening ...

Reduced-Pressure Systems, Methods, And Devices For Simultaneously Treating A Plurality Of Tissue Sites

Systems and methods for treating a plurality of tissue sites include a multi-port therapy unit. The multi-port therapy unit includes a plurality of patient-side ports each fluidly coupled to a plurality of conduits and a fluid reservoir fluidly coupled to the plurality of ports. A plurality of pressure sensors are associated with the plurality of patient-side ports to determining a pressure associated with each conduit. A controller is operatively coupled to the plurality of pressure sensors to receive treatment pressure data, monitor pressure for each pressure sensor of the plurality of pressure sensors, and signal an alarm condition if the pressure is outside of a pre-selected range. The system includes a reduced-pressure source fluidly coupled to a dressing at each tissue site through the multi-port therapy unit. 16.-. (canceled)7. A method for treating a plurality of tissue sites , the method comprising:deploying a plurality of reduced-pressure dressings proximate to the plurality of tissue sites; a plurality of patient-side ports, wherein each of the plurality of patient-side ports is configured to fluidly couple with one of a plurality of multi-lumen reduced-pressure delivery conduits and with at least one of a plurality of pressure-sampling lumens and one of a reduced-pressure supply lumens therein,', 'a fluid reservoir fluidly coupled to the plurality of patient-side ports,', 'a plurality of pressure sensors, wherein the plurality of pressure sensors are associated with the plurality of patient-side ports for determining a pressure associated with each of the plurality of pressure-sampling lumens,', 'a controller operatively coupled to the plurality of pressure sensors for receiving treatment pressure data from the plurality of pressure sensors, wherein the controller comprises a microprocessor and memory configured to monitor pressure for each of the plurality of pressure sensors and to signal an alarm condition if the pressure is outside of a pre-selected ...

BREAST PUMP AND METHOD FOR OPERATION

The present invention relates to a breast pump () comprising a first pump () and second pump (), at least one expression kit (), a valve assembly (), and a control unit () for controlling the valve assembly () and/or the pumps (), wherein the control unit () is configured to control the valve assembly () and/or the pumps () for alternate operation of the first and second pumps () in dependency of the operation times of the first and second pumps (). 2. Breast pump according to claim 1 , wherein a first expression kit and a second expression kit are provided.3. Breast pump according to claim 1 , wherein the control unit is configured to control the valve assembly in order to control the difference in operation times of the first and second pumps claim 1 , in particular such that their operation times are substantially equal.4424242. Breast pump according to claim 1 , wherein the valve assembly comprises a / valve with four ports and two settings and wherein the first pump is connected to first and third ports of the / valve and the second pump is connected to second and fourth ports of the / valve.5424242. Breast pump according to claim 1 , wherein the valve assembly comprises a / valve with four ports and two settings and wherein the first expression kit is connected to first and third work ports of the / valve and the second expression kit is connected to second and fourth work ports of the / valve.6424442444. Breast pump according to claim 5 , wherein in a first setting of the / valve the first pump is connected to the first expression kit and the second pump is connected to the second expression kit-′ claim 5 , and that in a second setting of the / valve-( the first pump is connected to the second expression kit and the second pump is connected to the first expression kit.73232. Breast pump according to claim 1 , wherein the valve assembly comprises first and second / valves claim 1 , wherein each of the / valves comprises three ports and two settings.83232. ...

WOUND TREATMENT APPARATUS

A bandage has a first sheet overlying a wound and located adjacent to it and a top sheet overlying the first sheet. The first sheet has a plurality of discrete passageways overlying the wound and adapted to communicate negative pressure established by a negative pressure source to the wound. 130.-. (canceled)31. An apparatus for treatment of a wound , comprising:a bandage configured to cover the wound and provide a seal about the perimeter of the wound, wherein the bandage provides a cavity over the wound, the bandage having a fluid delivery conduit configured to deliver fluid to the cavity and a fluid drainage conduit configured to provide negative pressure to the cavity;a fluid supply in fluid communication with the fluid delivery conduit;a fluid drainage including in fluid communication with fluid drainage conduit; anda liquid pump coupled to the fluid delivery conduit to provide for delivery of liquids to the cavity for delivery of fluid to the wound.32. The apparatus of claim 31 , further comprising a medication supply coupled to the fluid supply.33. The apparatus of claim 31 , further comprising an oxygen supply coupled to the fluid supply.34. The apparatus of claim 31 , further comprising an air supply coupled to the fluid supply.35. The apparatus of claim 34 , further comprising a valve system having a first input port coupled to the oxygen supply claim 34 , a second input port coupled to the air supply claim 34 , and an output port coupled to the fluid supply.36. The apparatus of claim 31 , further comprising a vacuum pump coupled to the fluid drainage conduit.37. The apparatus of claim 31 , further comprising a recirculating claim 31 , temperature regulated fluid conduit coupled to the bandage.38. The apparatus of claim 37 , further comprising a heater and a circuitous fluid pathway coupled to the recirculating claim 37 , temperature regulated fluid conduit.39. The apparatus of claim 38 , further comprising a temperature sensor coupled to the recirculating ...

DEVICE AND METHOD FOR WOUND THERAPY

A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier. 1a housing configured to cover at least a portion of a wound;a vacuum source in fluid communication with the housing;a liquid collector positioned inside of the housing and in operable communication with the wound, wherein said liquid collector is configured to retain wound exudate while simultaneously communicating negative pressure generated by the vacuum source to the wound.. A wound therapy device, comprising: This application is a continuation application of pending U.S. patent application Ser. No. 12/592,049, filed Nov. 18, 2009, which is a divisional application of U.S. patent application Ser. No. 11/610,458, filed Dec. 13, 2006 (now U.S. Pat. No. 7,779,625), which is a continuation-in-part of, and claims priority to, U.S. patent application Ser. No. 11/432,855, filed on May 11, 2006 (now U.S. Pat. No. 7,615,036), all of which are incorporated herein by reference.The disclosure relates in general to a device and method for wound therapy that is capable of treating a variety of chronic and acute wound types, including, but not limited to, infection wounds, venous ulcers, arterial ulcers, diabetic ulcers, burn wounds, post amputation wounds, surgical wounds, and the like. Specifically, the present disclosure is related to wound treatment devices and methods that utilize negative pressure therapy.Negative pressure therapy has been one tool used for the treatment of a variety of wounds by practitioners in the art. Conventional devices are generally large in size and often require the use of ...

Closed Loop Surgical System

Featured is a closed loop surgical system including one or more control units that are configured to form a fluid control subsystem for fluid control and a device control subsystem for controlling a surgical device. The two control subsystems in combination provide an automatic self-managed closed loop system for the control of fluid into and out of the surgical site by means of intelligent communication and for maintaining a preselected pressure desired by the surgeon. In particular embodiments, this is accomplished by utilizing empirically correlated motor speed and load measurements, based on supplied current, from the surgical resection device when using its specific resection capability. For example, automatically adjusting fluid flow responsive to changes in loading of a surgical device or automatically sensing a load change for the surgical device during a surgical procedure and automatically changing (increasing or decreasing) fluid flow responsive to the load change. 1. A closed loop surgical system , comprising:two control sub-systems, a fluid control subsystem including a fluid controller that is configured and arranged so as to control flow of fluid and a device control subsystem including a device controller that is configured and arranged so as to control the surgical device;wherein the fluid controller is further configured and arranged so as to control the fluid going to the surgical site (fluid inflow) and the fluid being suctioned or extracted from the surgical site (fluid outflow), one of the inflow or outflow being controlled so as to maintain a desired pressure within the joint;wherein the device controller monitors as least one parameter of the surgical device;wherein one of the fluid controller or the device controller determines from the one parameter if operational conditions for the surgical device have changed, determines if the changed operation condition requires a change in one or both of fluid inflow or fluid outflow; and if it is ...

THERMALLY CONTROLLED ILLUMINATION DEVICES

An illumination element has a light input section, a light transmitting section, and a light output section. The light input section is optically coupled to a proximal section of the light transmitting section and inputs light into the illumination element. The light transmitting section transmits the light by total internal reflection or by other transmission means. The light output section is adjacent a distal section of the light transmitting section which has a light extraction area from which the light exits with an energy density. The light extraction area comprises a bore extending at least partially inward into a distal end of the light output section. A plurality of optical structures is disposed on an inner wall of the bore. The optical structures are configured to extract light from the light output section and direct it toward the surgical field. 1. An illuminated surgical instrument , said illuminated surgical instrument comprising:a handheld surgical instrument selected from the group consisting of a suction tube, probe, electrosurgery instrument, and camera;a non-fiber optic optical waveguide coupled to the handheld surgical instrument, the waveguide having a tapered region that tapers into different planes, the waveguide having a light input section, wherein light is input into the illuminated surgical instrument via the light input section, the light input section having an input cross-sectional area;a light transmitting section, wherein the inputted light is transmitted through the light transmitting section, and wherein the light input section is optically coupled to a proximal section of the light transmitting section; anda plurality of lenslets on a distal-most tip of the waveguide, said plurality of lenslets having a combined extraction area at least twice as large as the input cross-sectional area.2. The illuminated surgical element of claim 1 , wherein the surgical instrument is a bore through the waveguide which serves as a suction channel.3 ...

SILENCER FOR VACUUM SYSTEM OF A WOUND DRAINAGE APPARATUS

Apparatus () for the provision of TNP therapy to a wound is described, the apparatus () including: a waste canister () into which fluid is aspirated from a wound by aspiration pump means () and a fluid flow path () for at least a part of said aspirated fluid on an outlet side of said aspiration pump means () wherein said fluid flow path () on the outlet side comprises a silencing system () having a plurality of silencing elements () therein. 111-. (canceled)12. A negative pressure wound therapy apparatus comprising:a casing defining a first interior volume;a negative pressure source positioned in the first interior volume, the negative pressure source configured to provide reduced pressure to a wound; and at least one exhaust conduit;', 'a plenum chamber fluidically connected to the at least one exhaust conduit, wherein the plenum chamber is positioned within the first interior volume, and wherein the plenum chamber comprises a housing defining a second interior volume comprising sound absorbing material; and', 'a removable cover integrated into the casing, the cover configured to seal the second interior volume in a first position, the cover further configured to provide access to the second interior volume in a second position so that the sound absorbing material can be replaced, wherein the sound absorbing material is configured to remain within the first interior volume when the cover is moved from the first position to the second position., 'a silencing system configured to reduce noise generated by the negative pressure source, the silencing system comprising13. The apparatus of further comprising a waste canister positioned outside the first interior volume and configured to be attached to the casing.14. The apparatus of claim 12 , wherein the plenum chamber comprises an outer rim claim 12 , and wherein the removable cover is configured to seal the second interior volume by engaging with the outer rim in the first position.15. The apparatus of claim 12 , ...

Systems And Methods For Delivering Fluid To A Wound Therapy Dressing

Provided are systems and methods for delivery of fluid to a wound therapy dressing. In exemplary embodiments, a pressure source provides negative pressure to a wound dressing and a biasing mechanism provides positive pressure to a fluid reservoir. 129-. (canceled)30. A system adapted to deliver fluid to a wound therapy dressing , comprising:a negative pressure source adapted to be in fluid communication with the wound therapy dressing to provide negative pressure to the wound therapy dressing;a housing adapted to receive a fluid reservoir, the fluid reservoir adapted to be in fluid communication with the wound therapy dressing to provide fluid from the fluid reservoir to the wound therapy dressing;a flow sensor adapted to be positioned in fluid communication between the fluid reservoir and the wound therapy dressing and to detect a flow rate of the fluid from the fluid reservoir to the wound therapy dressing;a flow controller adapted to be positioned in fluid communication between the fluid reservoir and the wound therapy dressing and to control a flow of the fluid from the fluid reservoir to the wound therapy dressing; anda control circuit adapted to control the negative pressure source and the flow controller, the control circuit further adapted to receive a fluid flow rate signal from the flow sensor that corresponds to the flow rate of the fluid from the fluid reservoir and a negative pressure signal that corresponds to the negative pressure in the wound therapy dressing.31. The system of claim 30 , wherein the fluid reservoir is a polyethylene bag.32. The system of claim 30 , wherein the flow controller is a control valve adapted to be controlled by the control circuit.33. The system of claim 30 , further comprising a biasing mechanism adapted to exert a positive pressure on the fluid in the fluid reservoir claim 30 , wherein the biasing mechanism is a constant-force spring.34. The system of claim 33 , wherein the biasing mechanism is disposed within a ...

BREAST PUMP SYSTEM WITH FLANGE

Systems and methods for pumping milk from a breast responsive to a controller, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure. 1. An automated breast pump system for pumping milk from a breast of a user , comprising:a breast pump configured to fit within a bra;a breast pump shell;a pumping mechanism, the pumping mechanism contained completely within the breast pump shell;a fluid container configured to directly engage and be supported by the breast pump shell;a flange attached to the breast pump shell and configured to receive a breast, the flange including a rigid nipple receiving portion, the nipple receiving portion including a proximal end defining an opening, a closed distal terminal end, and a curved top portion proximal of the closed distal end; andan external computer that automatically tracks pumping and communicates with the pumping mechanism;wherein the pumping mechanism is associated with the curved top portion of the rigid nipple receiving portion and the pumping mechanism is configured to create an upward suction force through the curved top portion of the rigid nipple receiving portion.2. The breast pump system of claim 1 , wherein the breast pump defines a generally breast shaped profile.3. The breast pump system of claim 2 , wherein the fluid container forms a part of the generally breast shaped profile.4. The breast pump system of claim 1 , further comprising a controller claim 1 , wherein the controller measures and calculates pressure to vary suction pressure.5. The breast pump system of claim 4 , further comprising a sensor in communication with the controller to provide a control loop that is used to adjust suction pressure.6. The breast pump system of claim 4 , wherein the pumping mechanism includes a compression member that creates the suction pressure claim 4 , wherein the control loop is used to adjust a position of the compression ...

SYSTEMS AND METHODS FOR ENHANCED OCCLUSION REMOVAL DURING OPHTHALMIC SURGERY

A method and apparatus for performing a surgical procedure is provided. The surgical procedure may be a phacoemulsification procedure but other procedures may employ the techniques disclosed. The design includes sensing, within the surgical site, for a material change in fluid flow relative to a predetermined threshold. Upon sensing the fluid flow materially differs from the predetermined threshold, the design temporarily increases aspiration vacuum pressure to the surgical site above a predetermined upper threshold toward a maximum vacuum level. The design applies electrically generated disruptive energy, including but not limited to laser and/or relatively low power ultrasonic energy, to the surgical site from a first point in time measured from when aspiration vacuum pressure is above the predetermined upper threshold to a second point in time where pressure falls below a predetermined lower threshold. 120-. (canceled)21. A surgical device comprising:a handpiece;a fluid line having a proximal end and a distal end, wherein the proximal end is operatively coupled to the handpiece;a pump operatively coupled to the distal end of the fluid line;a pressure transducer operatively coupled to the fluid line in between the pump and the handpiece;a controller operatively coupled to the pressure transducer, the controller configured to monitor fluid flow relative to a surgical site, sense for a material change in fluid flow relative to a predetermined threshold, indicating presence of an occlusion within the surgical site, wherein upon sensing the fluid flow materially differs from the predetermined threshold, temporarily increasing aspiration vacuum pressure above a predetermined upper threshold toward a maximum vacuum level; andan energy application device configured to apply electrically generated disruptive energy to the surgical site from a first point in time measured from when aspiration vacuum pressure is approximately at the maximum vacuum level to a second point in ...

WOUND SENSOR AND DIAGNOSTICS SYSTEM FOR WOUND THERAPY APPLICATIONS

A therapy system for treating a tissue site with negative-pressure therapy and/or fluid instillation therapy in response to information received from a diagnostic unit is disclosed. In some embodiments, the therapy system may include a dressing, a diagnostic unit, a negative-pressure source, a fluid source, and a controller. The diagnostic unit may be placed on or within the dressing at the tissue site and may detect or measure one or more parameters associated with the tissue site. In response to the parameter(s) detected and/or measured, the controller of the therapy system may direct the therapy system to increase or decrease negative-pressure therapy and/or fluid instillation therapy. Additionally, the disclosed therapy system may include one or more sources of therapeutic compounds, which may provide doses of additional substances, such as an antimicrobial, to the tissue site in response to the detection or measurement of a particular parameter by the diagnostic unit. 1. A system for treating a tissue site , comprising:a dressing adapted to be placed on the tissue site; a first sensor configured to detect a pH level of fluid present at the tissue site and to generate a first output based on the detected pH level, and', 'a transceiver configured to transmit the first output;, 'a diagnostic module adapted to be positioned adjacent the dressing and comprisinga negative-pressure source adapted to be fluidly coupled to the dressing;a first fluid source adapted to be fluidly coupled to the dressing and to deliver a first fluid to the dressing; anda controller configured to receive the first output and control the negative-pressure source and the fluid source based on the first output from the first sensor.2. The system of claim 1 , wherein the first fluid comprises saline.3. The system of claim 1 , wherein the first fluid comprises an antimicrobial solution.4. The system of claim 3 , wherein the antimicrobial solution comprises Prontosan®.5. The system of claim 1 , ...

WOUND CLOSURE AND DRAINAGE SYSTEM

A vacuum system for draining an open wound from liquids exuded therefrom, comprising an enclosure sealable to the wound circumference, a vacuum pump including a disposable pump unit detachably attachable to a non-disposable drive unit, and a waste container for collection of drained liquids. The enclosure has an outlet connected by means of a tube to an inlet of the pump unit and the waste container is connected to an outlet of the pump unit, such that when the vacuum pump is operated the drained liquids flow through the vacuum pump. The enclosure has one or more bleeding holes provided therethrough or adjacent to its outlet so that ambient air may enter the tube and flow together with the drained liquids. The enclosure and the waste container are disposable so that the drained liquids contact only disposable elements and may be disposed of together with all disposable elements 1. A vacuum system for draining an open wound from liquids exuded therefrom , comprising an enclosure sealable to the wound circumference so as to define a confined volume , a vacuum pump in fluid communication with said confined volume , and a waste container for collection of drained liquids in fluid communication with said vacuum pump ,wherein said confined volume is connected to an inlet of said vacuum pump and said waste container is connected to an outlet of said vacuum pump, such that when said vacuum pump is operated the drained liquids flow through said vacuum pump.2. The vacuum system of claim 1 , wherein said enclosure has an outlet connected by means of a tube to said inlet of the vacuum pump claim 1 , and one or more bleeding holes are provided through said enclosure or adjacent to its outlet so that ambient air may enter said tube and flow together with the drained liquids.3. The vacuum system of claim 1 , wherein said vacuum pump includes a disposable pump unit detachably attachable to a non-disposable drive unit claim 1 , said enclosure and said waste container being ...

Portable medical vacuum suction device

The present invention relates to a medical vacuum suction device used for forcibly discharging various body fluids and, more particularly, to a portable vacuum suction device comprising: a suction container provided with an internal space in a vacuum state; a connection cap coupled to an inlet of the suction container; a drain tube for guiding the discharge of a body fluid toward the connection cap; a flow rate control member for controlling the flow rate of the body fluid; and a soft corrugated tube which contracts or expands according to the vacuum pressure of the suction container. 1. A portable medical vacuum suction device comprising:a suction container having an inlet formed on a top end periphery thereof and an internal space storing a body fluid discharged from the body of a human, the internal space being in a vacuum state;a connection cap sealedly coupled to the inlet of the suction container and having a body fluid inlet port protruding from one side thereof and an inside hole formed at the center thereof to connect the body fluid inlet port and the internal space of the suction container with each other;a drain tube coupled to the body fluid inlet port to induce the body fluid discharged from the body through a vacuum pressure of the suction container;a flow rate control member rotatably disposed in the inside hole of the connection cap to control a flow rate of the body fluid introduced into the suction container through the body fluid inlet port; anda soft corrugated tube disposed on one side of the suction container or the flow rate control member in such a manner as to contract or expand according to the vacuum pressure of the suction container.2. The device according to claim 1 , wherein the flow rate control member comprises: a cylinder rotatably inserted into the inside hole of the connection cap; a handle disposed on top of the cylinder; a center hole penetrated into the cylinder and the handle; a plurality of flow rate control grooves formed on ...

"Ureteral Catheters, Bladder Catheters, Systems, Kits and Methods for Inducing Negative Pressure to Increase Renal Function"

Ureteral or bladder catheters are provided, including (a) a proximal portion; and (b) a distal portion, the distal portion including a retention portion that includes one or more protected drainage holes, ports or perforations and is configured to establish an outer periphery or protective surface area that inhibits mucosal tissue from occluding the one or more protected drainage holes, ports or perforations upon application of negative pressure through the catheter. Systems, kits and methods for inducing negative pressure to increase renal function also are provided. 1: A ureteral catheter comprising (a) a proximal portion; and (b) a distal portion , the distal portion comprising a retention portion that comprises one or more protected drainage holes , ports or perforations and is configured to establish an outer periphery or protective surface area that inhibits mucosal tissue from occluding the one or more protected drainage holes , ports or perforations upon application of negative pressure through the catheter.2: The ureteral catheter according to claim 1 , wherein the one or more protected drainage holes claim 1 , ports or perforations are disposed on a protected surface area or inner surface area of the retention portion claim 1 , and wherein onto the outer periphery or protective surface area of the retention portion of the catheter is configured to support the mucosal tissue and thereby prevent occlusion of the one or more of the protected drainage holes claim 1 , ports or perforations upon application of negative pressure through the ureteral catheter.3: The ureteral catheter according to claim 1 , wherein the retention portion comprises one or more helical coils claim 1 , each coil having an outwardly facing side and an inwardly facing side claim 1 , and wherein the outer periphery or protective surface area comprises the outwardly facing side(s) of the one or more helical coil(s) claim 1 , and the one or more protected drainage holes claim 1 , ports or ...

DIGITAL PRESSURE GAUGE

A vacuum pressure regulator system is provided for use in association with a vacuum system in which a vacuum is employed for healthcare purposes, for assisting in monitoring and regulating the vacuum pressure, and having a manual pressure control valve to adjust the treatment vacuum pressure supplied to the patient, a vacuum pressure sensor to sense the treatment vacuum pressure for the patient in the system, and producing a treatment vacuum pressure signal, a sampling circuit which intermittently samples the pressure signal generated by the pressure sensor and generate sampling signals, an electrically powered pressure display circuit, and digital pressure display, for receiving the sampling signals and providing a visible display, and a non-mains power supply. 1. A vacuum pressure regulator device comprising:a vacuum regulator;a sensor for sensing a vacuum pressure;a circuit in communication with said sensor for sampling the sensed vacuum pressure at a predetermined sampling interval and generating a signal corresponding to the sensed vacuum pressure; anda digital display for displaying a vacuum pressure reading corresponding to the signal generated by said circuit,wherein said circuit temporarily shortens the predetermined sampling interval upon detection of a condition.2. The vacuum pressure regulator device of and further including an adjustment knob for adjusting the vacuum pressure to be applied to the patient.3. The vacuum pressure regulator device of claim 2 , wherein the detected condition that causes said circuit to temporarily shorten the predetermined sampling interval is the detection of adjustment of the vacuum pressure.4. The vacuum pressure regulator device of claim 2 , wherein said control knob is coupled to said vacuum pressure regulator for regulating said vacuum pressure.5. The vacuum pressure regulator device of claim 1 , wherein said circuit samples the sensed vacuum at a predetermined sampling rate by periodically enabling and disabling said ...

METHOD FOR OPERATING AN OPHTHALMOSURGICAL SYSTEM

The invention is directed to a method of operating an ophthalmosurgical system which includes a console for accommodating an irrigation fluid vessel containing irrigation fluid and a cassette, insertable into the console, for directing the irrigation fluid to a surgical instrument for an eye to be treated. An irrigation fluid flow path leads from the irrigation fluid vessel to the cassette and to the surgical instrument. A first fluid pump includes a first pump chamber having a first volume and a first drive chamber separated therefrom by a first elastic partition and having a second volume. A second fluid pump is arranged in parallel to the first fluid pump and includes a second pump chamber having a third volume and a second drive chamber separated therefrom by a second elastic partition and having a fourth volume. 1. A method for switching of inlet valves and outlet valves for pump chambers of fluid pumps of an ophthalmosurgical system , the method comprising the steps of:opening a first outlet valve located in a direction of a flow downstream of an outlet of a first pump chamber arranged adjacently of a first drive chamber and separated therefrom by a first elastic partition element;elastically deforming the first elastic partition element so as to cause an irrigation fluid located inside of the first pump chamber to flow in a third subpath of an irrigation fluid flow path and, from there, to a surgical handpiece, wherein the irrigation fluid has a predetermined irrigation pressure;opening a second inlet valve located in a second subpath of an irrigation fluid flow path in direction of flow upstream of an inlet of a second pump chamber arranged adjacently of a second drive chamber and separated therefrom by a second elastic partition element;elastically deforming the second elastic partition element so as to cause a negative pressure to develop in the second pump chamber so as to cause irrigation fluid to flow from an irrigation fluid vessel along the second ...

Reduced-Pressure Treatment Systems With Reservoir Control

A reduced-pressure system for delivering reduced pressure for medical purposes to a desired site and to receive fluids in one instance includes a reservoir having an interior space operable to contain the fluids. A reduced-pressure delivery conduit is placed in fluid communication with the interior space for delivering the reduced pressure to the desired site. A source conduit and a pressure sensor conduit are placed in fluid communication with the interior space. A pressure sensor is placed in fluid communication with the pressure sensor conduit. A reduced-pressure source is placed in fluid communication with the source conduit. A reduced-pressure control unit is associated with the pressure sensor and the reduced-pressure source and is operable to receive pressure data from the pressure sensor and supply data from the reduced-pressure source and to determine when a reservoir-full/blockage condition exists. Other systems and methods are presented. 125-. (canceled)26. A control unit for controlling a reduced-pressure source , the control unit configured to:monitor a pressure signal correlated to a reduced pressure within a reservoir;receive a supply signal correlated to a supply rate of reduced pressure;determine if an absolute value of the pressure signal is below a predetermined threshold value; andterminate a supply of reduced pressure if the absolute value of the pressure signal does not reach the predetermined threshold value with an increased supply rate of reduced pressure during a specified time interval.27. The control unit of claim 26 , wherein the control unit is further configured to activate an alarm signal if the pressure signal does not rise in absolute value with the increased supply rate of reduced pressure.28. The control unit of claim 27 , wherein the alarm signal indicates a blockage condition.29. The control unit of claim 28 , wherein the blockage condition is a full reservoir.30. The control unit of claim 26 , wherein the supply signal is ...

Methods Of Managing Moisture When Using A Low Profile Wound Connection Conduit

A low-profile dressing interface or connector may comprise at least two side-by-side fluid pathways fluidly coupled to a recessed space of the connector, one for providing negative pressure to a tissue interface and the other for sensing negative pressure within the recessed space adjacent the tissue interface. The apparatus may comprise a top layer having a plurality of closed cells with tapered sidewalls. The apparatus may also comprise a base layer forming a sealed space between the top layer and the base layer. The base layer may further include a plurality of closed cells having tapered sidewalls. The apparatus may then further comprise a barrier coupled between the top layer and the base layer to form two fluid pathways within the sealed space. 1. An apparatus for managing fluid in a system for treating a tissue site , the apparatus comprising:a first layer including polymeric film;a second layer including polymeric film coupled to the first layer to form a sealed space between the first layer and the second layer, the sealed space including a port at a proximal end of the sealed space;a first inner layer including a polymeric film disposed between the first layer and the second layer and defining a plurality of closed cells with the first layer, the closed cells including sidewalls having a thickness tapering from the first layer to a distal end within the sealed space; andan applicator having an aperture formed in the second layer at a distal end of the sealed space, wherein the aperture exposes a portion of the plurality of closed cells to define a recessed space adapted to be fluidly coupled to the tissue site.2. The apparatus of claim 1 , wherein the polymeric film is polyurethane having an average thickness between about 250 μm and about 1000 μm.36.-. (canceled)7. The apparatus of claim 1 , wherein the polymeric film is polyurethane having an average thickness between about 250 μm and about 1000 μm and the distal end of the closed cells have an average ...

SYSTEM AND METHOD FOR UTILIZING PRESSURE DECAY TO DETERMINE AVAILABLE FLUID CAPACITY IN A NEGATIVE PRESSURE DRESSING

A negative pressure wound therapy system includes at least one sensor coupled to a wound dressing for a wound of a patient, and a processing circuit. The at least one sensor is configured to output a measurement of the pressure in the wound dressing. The processing circuit is configured to open a sealable aperture, receive the pressure measurements in the wound dressing, calculate a rate of pressure decay, correlate the rate of pressure decay in the wound dressing to a wound dressing fluid absorbent capacity and other therapy parameters, and output the wound dressing fluid absorbent capacity and other therapy parameters to a remote electronic device. 1. A negative pressure wound therapy system , comprising:at least one sensor coupled to a wound dressing for a wound of a patient, the at least one sensor configured to detect a pressure in the wound dressing;a sealable aperture coupled to the at least one sensor; and open the sealable aperture to induce a pressure change between the pressure in the wound dressing and atmospheric pressure;', 'calculate a rate of pressure decay in the wound dressing based on the pressure change; and', 'calculate a wound dressing fluid absorbent capacity based on the rate of pressure decay; and, 'a processing circuit configured toa communications circuit coupled to the processing circuit, the communications circuit configured to transmit data to a remote electronic device.2. The negative wound therapy system of claim 1 , wherein the negative pressure wound therapy system is canister-free.3. The negative wound therapy system of claim 1 , wherein the processing circuit is configured to open the sealable aperture to calculate the wound dressing fluid absorbent capacity at start up.4. The negative pressure wound therapy system of claim 1 , wherein the processing circuit is configured to store the pressure change over time.5. The negative pressure wound therapy system of claim 4 , wherein the processing circuit is further configured to ...

DEVICE AND METHOD FOR WOUND THERAPY

A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier. 158.-. (canceled)59. A wound therapy device , comprising:a vacuum source module comprising a vacuum source capable of generating negative pressure and a pressure controller for controlling the amount of negative pressure; a flexible wound cover to cover at least a portion of a wound site;', 'a porous liquid collector positioned within the flexible wound cover and in communication with the wound site, wherein said porous liquid collector is configured to retain wound exudate while simultaneously communicating negative pressure generated by the vacuum source module to the wound site;', 'a seal for sealing the dressing module to a surface around the wound site; and, 'a dressing module comprisinga coupling for maintaining the vacuum source module attached to and in communication with the dressing module, the coupling comprising an adhesive on the vacuum module configured to adhere the vacuum source module to the dressing module.60. The wound therapy device of claim 59 , wherein the vacuum source module comprises a power source.61. The wound therapy device of claim 59 , wherein the vacuum source module comprises a pressure sensor.62. The wound therapy device of claim 59 , wherein the vacuum source module comprises a control module comprising a circuit board.63. The wound therapy device of claim 59 , wherein the vacuum source module comprises an outlet claim 59 , wherein the outlet comprises a filter.64. The wound therapy device of claim 59 , wherein the coupling is configured to allow negative pressure ...

Device For The Initial Treatment of Wounds

A device for the initial treatment of wounds, which has two chambers each open on one side. The first chamber is designed as a vacuum chamber having a valve for sucking off air and peripherally surrounds the substantially centrally arranged second chamber which is intended to be placed over the wound. In a preferred embodiment of the device according to the present teaching, an opening provided with a valve for sucking off air or body fluids is provided on the second chamber. 1. A device for the initial treatment of wounds , wherein it has two chambers each open on one side , wherein the first chamber is designed as a vacuum chamber having a valve for sucking off air and peripherally surrounds the substantially centrally arranged second chamber which is intended to be placed over the wound.2. The device for the initial treatment of wounds according to claim 1 , wherein an opening provided with a valve for sucking off air or body fluids is provided on the second chamber.3. The device for the initial treatment of wounds according to claim 1 , wherein the chambers have sealing lips on the areas which are in contact with a body surface.41. The device for the initial treatment of wounds according to claim 1 , wherein a vacuum gauge is provided at the first chamber . The present teaching relates to a device for the initial treatment of wounds, in particular for the stanching of bleedings and for the treatment of life-threatening injuries, such as chest injuries for the treatment of tension pneumothorax.An effective and rapid treatment of serious and life-threatening bleedings in the event of injuries from physical attacks, traffic accidents and other types of accidents, but also in the case of war, terrorist attacks or natural disasters, is very important. For example, in the case of injury to blood vessels, there exist many initial treatment means, such as stanching of limbs, application of a pressure bandage, constriction of blood vessels, application of chemical ...

BREAST PUMP SYSTEM WITH PRESSURE SENSOR

Systems and methods for pumping milk from a breast responsive to a controller, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure. 1. An automated system for controlling pumping cycles to pump milk from a human breast , the system comprising:a breast pump shaped to fit within a bra, the breast pump including:a housing;a pumping mechanism contained within the housing;a wireless transmitter;a skin contact member configured to contact and form a seal with the breast, the skin contact member attached to the housing and including a nipple receiving portion;a milk collection container having a rigid exterior surface configured to contact the bra; anda non-contact pressure sensor adjacent the nipple receiving portion.2. The automated system of claim 1 , further comprising a mechanism to monitor volumes pumped by the breast pump.3. The automated system of claim 1 , wherein the breast pump includes a let down mode and an extraction mode.4. The automated system of claim 3 , further comprising a controller claim 3 , the controller configured to change a vacuum level in the automated system to the extraction mode after milk entering the system.5. The automated system of claim 3 , further comprising a controller claim 3 , the controller configured to change a pumping magnitude upon a predetermined time.6. The automated system of claim 1 , wherein the non-contact pressure sensor is used for controlling pumping cycles of the breast pump.7. The automated system of claim 1 , wherein the breast pump defines a generally breast shape.8. The automated system of claim 7 , wherein the collection container forms part of the generally breast shaped breast pump.9. The automated system of claim 8 , wherein the collection container has a valve. The present disclosure generally relates to portable, energy efficient breast pump systems and methods for collecting milk from a breast of a ...

BREAST PUMP ASSEMBLY WITH REMOTE INTERFACE

Systems and methods for pumping milk from a breast, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure. 1. An automated system for controlling pumping cycles to pump milk from a human breast , the system comprising:a breast pump configured to fit within a bra, the breast pump including:a chassis;an outer shell attached to the chassis;a pump mechanism attached to the chassis between the outer shell and chassis;a battery contained between the outer shell and chassis;a circuit board contained between the outer shell and chassis;a sensor electrically connected to the circuit board;a removeable breast contacting structure configured to contact and form a seal with the breast, the breast contacting structure including a nipple receiving portion below the pump mechanism; anda milk collection container;wherein when the removable breast contacting structure is removed, the pump mechanism, battery and circuit board are positioned between the outer shell and the chassis;wherein the pump mechanism comprises two drivers that displace a flexible member to generate vacuum pressure in the nipple receiving portion;wherein the system further comprises a wireless transmitter transmitting a Bluetooth Low Energy signal containing milk volume collected data;wherein the system further comprises a chip tracking usage sessions of the two breast pumps;wherein the system further comprises a language protocol for two-way communication between the breast pumps and an external device;wherein the system further comprises a remote user interface including user control functionality;wherein the system further comprises an internal pump memory within a chip and the wireless transmitter transits pumped milk volume to the external device which displays the pumped milk volume of each breast;wherein the remote user interface has an input for the human to adjust one or both of the breast pumps with ...

Wound exudate monitor accessory

A stand-alone system for assessing wound exudates from the wound of a patient is described. The system contains functionality to detect, process and report various wound parameters. The system also may make treatment determinations based on these findings. The system may detect one or more physiological values of the wound exudates from the wound of the patient. The system may also compare detected physiological values to predetermined physiological values, in order to obtain a comparison result in real time. The system may include a processor ( 15 ) which provides an electronic signal based on the comparison result in which the electronic signal may corresponds to guidelines for treating the wound ( 3 ). The system described may be an accessory, which may be used on its own, or in conjunction with other wound treatment devices ( 9 ).