АППАРАТ И СПОСОБ ДЛЯ ПЕРЕРАБОТКИ АНЕСТЕЗИРУЮЩЕГО ГАЗА

Группа изобретений относится к обработке анестезирующих газов. Аппарат включает первую камеру, имеющую пневматически соединенные ввод и вывод, ввод приспособлен для соединения с вытяжкой аппарата для анестезии и расположен для приема потока газа, который включает компоненты отработанного анестезирующего газа. Первый выпускной клапан имеет первый конец, пневматически соединенный с выводом камеры, и имеющий второй конец, приспособленный для пневматического соединения с вакуумным коллектором. Выпускной клапан предназначен для выборочного отключения первой камеры от вакуумного коллектора. Первый детектор контролирует вход в первую камеру потока. Первый детектор связан с первым выпускным клапаном с обеспечением управления им. Когда компоненты отработанного анестезирующего газа присутствуют в первой камере, первый детектор вызывает открывание первого выпускного клапана для пневматического соединения вывода первой камеры с вакуумным коллектором для эвакуации потока газа, включающего компоненты ...

АППАРАТ И СПОСОБ ДЛЯ ПЕРЕРАБОТКИ АНАСТЕЗИРУЮЩЕГО ГАЗА

... 1. Аппарат (30) для сбора отработанных анестезирующих газов, включающий: ! первую камеру (32А), имеющую ввод и вывод, гидравлически соединенные друг с другом, ввод первой камеры приспособлен для гидравлического соединения с вытяжкой аппарата для анестезии (12А) и расположен для приема потока газа, который включает компоненты отработанного анестезирующего газа; ! первый выпускной клапан (34А), имеющий первый конец, гидравлически соединенный с выводом камеры, и имеющий второй конец, приспособленный для гидравлического соединения с вакуумным коллектором (16); и ! первый детектор (40А), соединенный с камерой, который сконструирован и расположен, чтобы определять, когда компоненты отработанного анестезирующего газа, вероятно, присутствуют в камере; первый детектор, оперативно соединенный с первым выпускным клапаном для его контроля, при этом, ! когда первый детектор определяет, что компоненты отработанного анестезирующего газа, вероятно, присутствуют в первой камере, первый детектор вызывает ...

Entfeuchtungsgerät

Vorrichtung zur Ableitung von Atemgas.

BEATMUNGSVORRICHTUNG

Vorrichtung zur Verabreichung von Narkosemitteln

Integrated, extendable, anesthesia system

Medical apparatus and breathable gas mixtures

PLANT FOR ANAESTHESIA

GAS SCAVENGING APPARATUS

Gas scavenging apparatus for connection to a patient breathing system which draws air through a receiver body 1 and employs a Venturi to provide suction of gases from the patient inlet tube 4, the open enlarged end of which faces the air flow through the body 1, the flow rate of the air through the receiver body and the dimensions of the apparatus being chosen such that the patient's breath is not sucked away too rapidly. The receiver body 1 may have a transparent portion 6 within which is movable a piston 11 to act as a flow rate indicator. ...

Anaesthetic gas scavenging reservoir

An anaesthetic gas scavenging system comprises a co-axial open reservoir with a patient connection tube 21 terminating within the reservoir. An end piece 22 is fitted to the tube, the end piece having inlet and outlet openings directed in the same direction so that the end piece reverses the flow direction of the exhaust gases in receiving them from the tube and passing them to the reservoir for removal at 31 by suction. Air holes 24, 25 are provided at the bottom of the reservoir. ...

Anaesthetic gas scavenging system

An anaesthetic gas scavenging system for a recovery room 1 has one or more face-masks (6, Fig. 2), exhaust tubing coupling the or each face-mask to a gas withdrawal system 4 for exhausting exhaled gases outside the recovery room, and a gas inlet 5 for an oxygen supply to the or each face mask. ...

ANAESTHETIST'S GAS POLLUTION INHIBITOR

Breathing system

A breathing assembly

A breathing assembly for supplying gases to a patient includes a patient end connector 12; a chamber end connector 14; and a coaxial conduit assembly 18 extending between the patient end 12 and the chamber end 14 connectors. The coaxial conduit assembly 18 includes inner 20 and outer 22 conduits, the inner conduit 20 arranged within the outer conduit 22 so as to define a first flow passage 24 along the coaxial conduit assembly 18, and a second flow passage 26 along the coaxial conduit assembly 18 between the inner conduit 20 and the outer conduit 22. Inspiratory gases are conveyed along the first flow passage 24 and expiratory gases are conveyed along the second flow passage 26, in use, and the outer conduit 22 is at least partially formed from a water permeable material configured to allow water to flow therethrough. The permeable material may be configured to all flow of liquid water therethrough and restrict flow of respiratory gases.

Drug delivery system for conscious sedation

Inhalant anesthetics are developed with a number of properties including rapid onset and recovery, controllability, and ideally, a broad safety profile. The efficacy of these agents is measured by their ability to create anesthesia within the framework of the other desirable properties. The instant invention focuses on the dosage level where analgesia occurs but amnesia or lack of consciousness does not. In addition to identifying the dosage level where pain is sharply reduced or eliminated but awareness remains, a delivery system for safe and effective delivery of the agent is described.

Removal of carbon dioxide and carbon monoxide frompatient expired ga during anesthesia

Drug delivery system for conscious sedation.

Drug delivery system for conscious sedation.

Removal of carbon dioxide and carbon monoxide frompatient expired ga during anesthesia

Drug delivery system for conscious sedation.

Removal of carbon dioxide and carbon monoxide frompatient expired ga during anesthesia

DEVICE FOR THE PROPORTIONED DELIVERY OF A THERAPEUTIC GAS

EQUIPMENT TO SCHMERZLINDERUNG AND FEAR SOLUTION IN CONNECTION WITH MEDICAL OR SURGICAL INTERFERENCES

SYSTEM CONFIGURATION FOR EVACUATING FROM ANAESTHESIA OR ANALGESIEGAS

ARTIFICIALLY RESPIRATING DEVICE

Ventilation mask

Abstract A nasal ventilation mask for providing oxygen to a patient either during emergency and/or elective airway management. The body of the mask includes an interior that forms a nasal cavity to cover a patient's nose while leaving the patient's mouth uncovered, a gas channel and an exterior opening. The nasal ventilation mask includes an 02 port for introducing oxygen into the nasal cavity, a ventilation port for directing a gas toward or away from the nasal cavity; and a CO2 port to direct a gas expelled orally by the wearer. A plurality of tabs or eyelets are used for strapping the mask to the patient's head or for tying the mask down to the operating table. A gas hood is located under the nose region of the mask to enhance the collection of anesthetic gases around the patient's mouth. WO 2016/028522 PCT/US2015/044341 Figure l a Ventiliation Port 02 Port O 12 Supply Por Oral Opening 22 Gad for Gas \oo 24'cavenger & 24 CO2Monitoring Port 14 Gas Scavenger & C02Monitoring Port 16 -Gas ...

Breathing-gas delivery system with exhaust gas filter body and method of operating a breathing-gas delivery system

Breathing-gas delivery systems and methods are described. In one such system there is a movable partition, a housing and a filter body. The housing is disposed about the movable partition, and thereby provides a respirator side on a first side of the partition, and a patient side on a second side of the partition. The housing also has (a) a patient inspiration orifice on the patient side, which is adaptable to supply breathing-gas to a patient, and (b) a gas exhaust orifice on the patient side.

A nasal gas delivery system and method for use thereof

Treatment method and treatment apparatus for gas containing nitrous oxide

Components for medical circuits

Breathable medical circuit components and materials and methods for forming these components are disclosed. These components incorporate breathable foamed materials that are permeable to water vapor and substantially impermeable to liquid water and the bulk flow of gases. The disclosed materials and methods can be incorporated into a variety of components, including tubes, Y-connectors, catheter mounts, and patient interfaces and are suitable for use in a variety of medical circuits, including insufflation, anesthesia, and breathing circuits.

Method and apparatus for evacuating nitrous oxide

Ventilation mask

A nasal ventilation mask having one or more attachment ports located adjacent to and overlying an upper lip of a patient when worn.

Combination anesthesia and scavenger surgical mask

A surgical mask for administering and/or scavenging medical gases includes a nasal mask and an oral mask that envelops the nasal mask. The nasal mask is secured to the oral mask and may be removable from it.

Neck strap, crown strap assembly and headgear for a breathing mask

The present technology relates to a neck strap, a crown strap assembly and a headgear for a breathing mask. The neck strap comprises first and second lower connection portions adapted to connect to first and second lower mask connection straps, and first and second upper connection portions adapted to connect to a first and second lateral crown straps.

Apparatus and method for respired gas collection

PRESSURE MODIFYING SYSTEM

APPARATUSES AND METHODS FOR AUTOMATICALLY ASSESSING AND MONITORING A PATIENT'S RESPONSIVENESS

A care system and associated methods are provided for alleviating patient pain, anxiety and discomfort associated with medical or surgical procedures. The care system facilitates a procedural clinician's safely and efficaciously providing sedation and analgesia and in some measure, amnesia to a patient by providing a responsiveness monitoring system (12) which monitors the responsiveness of the patient and generates a value representing the level of patient responsiveness. In further aspects of the invention, the responsiveness monitoring system is an automated system which includes patient query and response devices. Additional embodiments of the system and methods are directed to alleviating patient pain or discomfort while enabling safe drug delivery in correlation with the monitoring of patient health conditions.

VENTILATION APPARATUS FOR MEDICAL GASES

A ventilation apparatus is provided for ventilating medical gases and the like from the vicinity of the face of a patient. The apparatus generally comprises a flexible envelope having breathable surface portions for collecting gases therethrough into a hollow interior of the envelope. A suction port coupled to the envelope collects the gases from the hollow interior for removal by a suction device. The use of a flexible envelope having breathable surface portions permits the apparatus to be readily applied to a patient by simply placing the apparatus under the head of the patient like a pillow.

DEVICE FOR ADMINISTERING AN ANESTHETIC GAS

A system for administering an anesthetic gas to a patient has a mask, means for supplying an anesthetic gas to the mask when the patient inhales, and an exhaust line having its proximal end connected to the mask and adapted to have its terminal end connected to a source of vacuum to exhaust gas from the mask when the patient exhales. A closed reservoir is in series with said exhaust line between the proximal and terminal ends thereof. The reservoir has an inlet and an outlet with a check valve adjacent to the inlet to prevent the flow of gas out of the reservoir through the inlet when the patient inhales. Advantageously, the reservoir check valve is a diaphram valve and the face mask has at least one nozzle for scavenging gas escaping from the mask.

EVACUATION MANIFOLD FOR MEDICAL ANESTHESIA CIRCUITS

RMR1??079 PP38 TITLE EVACUATION MANIFOLD FOR MEDICAL ANESTHESIA CIRCUITS A manifold is described for use with anesthesia breathing circuits and which is adapted to receive exhaust anesthetic gases from the anesthesia breathing circuit for disposal thereof. The manifold is connectible to a vacuum system for such disposal and includes a needle valve which may be set to establish a desired flow of exhaust anesthetic gas to the vacuum system. Because the pressures (either positive or negative) within the manifold will also have an effect on pressures within the anesthesia breathing circuit from which the exhaust anesthetic gas is received, it is necessary to control the pressure inside the manifold within certain predetermined limits. Relief valves are thus provided and which relieve the pressure within the manifold at certain predetermined positive and negative limits. The relief valves are so arranged that both may be opened manually by a common member which is accessible exterior of the ...

ANAESTHETIC MASK

ANAESTHETIC MASK The present invention provides an improved anaesthetic scavenging face mask having a scavenging channel running along the perimeter of the mask. The mask is provided with an anaesthetic gas inlet and a vacuum outlet. The scavenging channel is connected to the vacuum outlet.

APPARATUSES AND METHODS FOR AUTOMATICALLY ASSESSING AND MONITORING A PATIENT'S RESPONSIVENESS

... ²²²A care system and associated methods are provided for alleviating patient ²pain, anxiety and discomfort associated with medical or surgical procedures. ²The care system facilitates a procedural clinician's safely and efficaciously ²providing sedation and analgesia and in some measure, amnesia to a patient by ²providing a responsiveness monitoring system (12) which monitors the ²responsiveness of the patient and generates a value representing the level of ²patient responsiveness. In further aspects of the invention, the ²responsiveness monitoring system is an automated system which includes patient ²query and response devices. Additional embodiments of the system and methods ²are directed to alleviating patient pain or discomfort while enabling safe ²drug delivery in correlation with the monitoring of patient health conditions.² ...

EXHALATION SCAVENGING THERAPY MASK

A respiratory mask for a medical patient including a shell and a flow coupling is disclosed. The shell includes an upper portion configured to cover a nose of the patient and a lower portion configured to cover a mouth of the patient, where an internal surface of the shell defines an interior volume of the respiratory mask. The flow coupling includes a body, a supply flow passage extending through the flow coupling, a scavenging flow passage extending through the flow coupling, and a septum within the body that separates the supply flow passage from the scavenging flow passage. The supply flow passage and the scavenging flow passage are fluidly coupled to an aperture that extends through the upper portion of the shell, and an aperture extending through the lower portion of the shell, respectively.

CANNULA FOR MINIMIZING DILUTION OF DOSING DURING NITRIC OXIDE DELIVERY

The present invention generally relates to, amongst other things, systems, devices, materials, and methods that can improve the accuracy and/or precision of nitric oxide therapy by, for example, reducing the dilution of inhaled nitric oxide (NO). As described herein, NO dilution can occur because of various factors. To reduce the dilution of an intended NO dose, various exemplary nasal cannulas, pneumatic configurations, methods of manufacturing, and methods of use, etc. are disclosed.

VENTILATION OF MEDICAL GASES

A downdraft system is used for withdrawing and collecting medical gases, fumes, mists and particulates from the vicinity of a patient's face. Two intakes (16) are located on respective sides of the patient's face, at the cheeks. The intakes extend from temple to chin. They are connected through a ducting system (28-46) to a source of vacuum (48) for collecting the medical gases. The ducting system is configured to allow the adjustment of the intake positions. The intakes create a flow of air across the patient's face from above the nose to below the mouth so that gases leaking during administration of gases or exhaled by the patient, and fumes, mists or low velocity particulates generated, for example, in orthodontic procedures, are captured in the flow across the patient's face into the intakes. This leaves the patient's mouth and nose fully exposed and unobstructed by the gas evacuation apparatus so that the administration of gases, dental treatments and any other procedures requiring ...

AN EXPIRATORY SCAVENGING METHOD AND APPARATUS AND OXYGEN CONTROL SYSTEM FOR POST ANESTHESIA CARE PATIENTS

An apparatus and method for preventing contamination of a post anesthesia care unit of a hospital by the use of a mask (16) connected to a ventilator (229) and a vacuum exhaust port (240).

A DEVICE AND METHOD FOR RECOVERING ANAESTHETIC DURING THE USE OF INHALED ANAESTHETICS

The invention relates to a device and a method for recovering anaesthetic during the use of inhaled anaesthetics. An anaesthetic reflector (5) is used which absorbs anaesthetic medium from the gas exhaled by the patient and desorbs anaesthetic medium to the gas inhaled by the patient. According to the invention a moisture-heat exchanger (12) is arranged in the system which, in an equivalent manner, recovers water vapour from the gas exhaled to the gas inhaled. The moisture-heat exchanger (12) is preferably located between the anaesthetic reflector (5) and the patient (1). The device and the method according to the invention enable the gas inhaled to be moistened to prevent dehydration, as well as increasing the efficiency of the reflector (5).

Beatmungsgerät mit Vernebelungsvorrichtung

VORRICHTUNG ZUR VERRINGERUNG DER UMWELTVERSEUCHUNG BEI DER MEDIZINISCHEN BEHANDLUNG ODER DIAGNOSE.

Anaesthetised patient exhalation unit - comprises closed vessel which is fitted with adjustable inlet valve and bottom outlet

The equipment disposes of the gases exhaled by the patient, and comprises a closed vessel (A) with an inlet for the exhaled gases (P) and an outlet for them at the bottom (H). The inlet pipe has an adjustable valve (F, G) inside the vessel. There can be a venturi in the outlet. The equipment protects the operating theatre staff against intoxication and other harmful effects resulting from gases such as fluothane and penthrane. An adjusting screw (E) at the top of the closed vessel (A) is used to control the degree of opening of the valve (F, G).

Anaesthetic gas decontaminating device

A compressible bag (11) operated by the anaesthetist in order to influence the respiration of the patient is connected to a mask (31) worn by the patient. The bag (11) is arranged in a collecting dish (12), so that exhaled air and excess anaesthetic gas are withdrawn via a flexible connection tube (19) and a suction pipe (26). The collecting dish (12) comprises a half-lid (16) in order to ensure access to the bag (11). In this way, contamination of the space surrounding the patient and the device with anaesthetic gas is prevented. ...

Mobile inhalation anesthesia system has oxygen source that extracts air from environment through anesthetic tubing and concentrates oxygen content, anesthesia mask that comprises anesthetic absorber

The anesthesia system (100) has an anesthesia mask (150) and an inhalation anesthetic apparatus (110) comprising a control unit (120), an oxygen source (113) with oxygen line (103), an anesthetic agent container (111) with anesthetic tubing (101), a voltage-independent power source (114), a medical ventilator (112) and an anesthesia mixing conduit (104). The oxygen source extracts air from environment through the tubing and concentrates the oxygen content. The mask comprises anesthetic absorber and anesthetic apparatus is free from carbon dioxide.

Mobile inhalation anaesthesia system which can be inserted.

Mobil einsetzbares Inhalationsanästhesiesystem (100) mit einer Anästhesiemaske (150) und einer Inhalationsanästhesievorrichtung (110), umfassend eine Steuereinheit (120), eine Sauerstoffquelle (113) mit Sauerstoffleitung (103), einen Anästhesiemittelbehälter (111) mit Anästhesierohrleitung (101), eine Energiequelle (114), einen Medizinalventilator (112) sowie eine Mischrohrleitung (104) für die Anästhesie eines Patienten (130), die dadurch gekennzeichnet ist, dass die Sauerstoffquelle (113) ein Sauerstoffkonzentrator ist, welcher Luft aus der unmittelbaren Umgebung (101) entnimmt und deren Sauerstoffgehalt konzentriert; die Energiequelle (114) mindestens eine netzspannungsunabhängige Energiequelle ist; und die Anästhesiemaske (150) einen Anästhesiemittelabsorber umfasst, sodass eine mindestens annähernd anästhesiemittelfreie exhalierte Atemluft des Patienten (130) erzeugbar und unmittelbar an die unmittelbare Umgebung (101) abgebbar ist, wobei die Inhalationsanästhesievorrichtung (110) ...

СИСТЕМА ДОСТАВКИ ЛІКАРСЬКИХ ЗАСОБІВ ДЛЯ ЗНЕБОЛЮВАННЯ

Розроблені інгаляційні анестетики, які мають ряд властивостей, що включають в себе швидкість настання ефекту і відновлення, керованість і, в ідеалі, широкий профіль безпеки. Ефективність цих препаратів вимірюється їх здатністю викликати анестезію в сукупності з іншими бажаними властивостями. Даний винахід сфокусований на рівні дозування, при якому настає знеболення, але не настає амнезія або втрата свідомості. Крім визначення рівня дозування, при якому різко знижується або зовсім знімається біль, але зберігається свідомість, також запропонована система для нешкідливої і ефективної доставки препарату. Система містить систему (10) зв'язаної індексації. Кисень з джерела О2 (16) проходить по подавальному трубопроводу (22), що має чутливий регулятор (18) тиску, до витратоміра (20).

NECK STRAP, CROWN STRAP ASSEMBLY AND HEADGEAR FOR BREATHING MASK

DEVICE OF CONNECTION CONNECTS HAS a SOURCE OF DEPRESSION AND INTENDS FOR the CONNECTION Of a SUCTION PIPE

Nitrogen protoxyde evacuation system has mask connected by T-piece with one-way valves to container of gas/oxygen mixture and storage vessel

Système pour l'évacuation du protoxyde d'azote dans les salles de soins, qui utilise une valve d'inspiration qui permet d'amener le mélange protoxyde d'azote frais et une valve d'expiration qui permet de récupérer les gaz expirés contenant le protoxyde d'azote et les autres gaz expirés. Le système comporte un masque facial (1) relié à une des extrémités (a) d'un système en T (3). Les deux autres extrémités (b) et (c) du système en T comportent chacune une valve unidirectionnelle. L'extrémité (b) de ce système est connectée à la bouteille (8) contenant le mélange protoxyde d'azote/ oxygène, soit par l'intermédiaire d'une valve (9) autodéclenchable par le patient, soit par l'intermédiaire d'un ballon d'anesthésie (10). L'extrémité (c) est connectée à un tuyau (4) qui sert à évacuer et récupérer les gaz expirés par le patient. Ce tuyau (4) se connecte par l'intermédiaire d'une valve antiretour (5) à un tuyau (6) qui amène les gaz expirés dans un réservoir (7).

An anaesthetic apparatus

Appareil comportant un dispositif de transport (16) destiné à réacheminer des composants du gaz prédéterminés hors d'une conduite d'expiration (2) de l'appareil d'anesthésie (1), par l'intermédiaire d'une unité de nettoyage (9), pour les faire passer dans un premier récipient sous pression (17). Selon l'invention, il est prévu un deuxième récipient sous pression (19), monté en aval du premier récipient sous pression (17), équipé d'un dispositif de compression (18) faisant passer les composants du gaz hors du premier récipient sous pression (17) et dans le deuxième (19), ainsi qu'un dispositif de refroidissement (20) se trouvant au niveau du deuxième récipient sous pression (19), et en ce que le dispositif de compression (18) et le dispositif de refroidissement (20) sont réglés sur des paramètres de fonctionnement tels qu'au moins l'anesthésique se trouve en phase liquide dans le deuxième récipient sous pression (19).

DEVICE FOR REDUCING ENVIRONMENTAL CONTAMINATION DURING MEDICAL TREATMENT

DEVICE Of ABSORPTION AND DESORPTION Of ANAESTHETIC

L'alimentation en anesthésique d'un dispositif d'adsorption et de désorption d'anesthésique doit être améliorée. Pour atteindre ce but, il est prévu, sur une conduite de gaz respiratoire (8), entre le filtre d'adsorption (9) et le patient (10), un dispositif de prélèvement d'échantillons (16) destiné au gaz respiratoire, et un dispositif doseur d'anesthésique (18) qui sont montés de telle sorte qu'existe un équilibre entre le volume de gaz prélevé et le volume de gaz introduit.

INTERMEDIATE ANAESTHETIC GAS TANK

Il est décrit un réservoir intermédiaire de gaz anesthésiant présentant une caractéristique d'adsorption électriquement influençable, comprenant un premier canal de gaz destiné à acheminer du gaz d'inspiration, un deuxième canal de gaz destiné à acheminer du gaz d'expiration, un matériau adsorbant (2) électriquement influençable destiné à un anesthésique porté par un gaz, présent dans au moins un canal de gaz destiné à acheminer du gaz respiratoire et des moyens pour solliciter le matériau adsorbant (2) électriquement influençable au niveau d'au moins une zone identique, en alternance, avec du gaz d'expiration et du gaz d'inspiration afin de permettre un stockage intermédiaire de l'anesthésique du gaz d'expiration vers le gaz d'inspiration. Le moyen, au nombre minimum d'un, présente des ouvertures détournant le gaz d'expiration et d'inspiration qui rentre et sort de telle sorte qu'en alternance une zone identique du matériau adsorbant (2) fixe soit exposée au gaz d'expiration et au gaz ...

인공호흡 마스크

... 비강으로 또는 구강으로 방출되는 호기-말 CO2를 모니터링 하기 위하여 마스크 내로 통합되는 호기-말 CO2 배출을 모니터링 하는 분리 포트들을 가지는 비강 인공호흡 마스크가 개시된다. 또한, 피해자의 입 및/또는 코를 덮는 모양인 바디를 가지는 입에서-코 및/또는 입에서-입 소생을 위한 CPR 마스크가 개시되고, 상기 마스크는 피해자로 이송되는 적어도 부분적은 구조자의 날숨 CO2를 제거하기 위한 CO2 흡수기를 포함한다.

ANORDNING FOR AV- ELLER BORTSUGNING AV UTANDNINGSLUFT FRAN PATIENTER

PROCESS AND APPARATUS FOR TREATING WASTE ANESTHETIC GAS

To provide a process and an apparatus for treating a waste anesthetic gas containing a volatile anesthetic and nitrous oxide discharged from an operating room by introducing the gas into an adsorbing cylinder (1) filled with an adsorbent, where the volatile anesthetic contained in the waste anesthetic gas is adsorbed and thereby removed, and successively introducing the gas into a catalyst layer filled with a nitrous oxide decomposition catalyst (3), where nitrous oxide is decomposed into nitrogen and oxygen. By using the process and the apparatus for treating a waste anesthetic gas of the present invention, a volatile anesthetic having a possibility of destroying the ozone layer or nitrous oxide as a global warming gas can be made harmless while preventing the release into atmosphere.

COMBINATION ANESTHESIA AND SCAVENGER SURGICAL MASK

A surgical mask for administering and/or scavenging medical gases includes a nasal mask and an oral mask that envelops the nasal mask. The nasal mask is secured to the oral mask and may be removable from it.

APPARATUS AND PROCESS FOR DECOMPOSING DINITROGEN MONOXIDE IN AN ADIABATIC FIXED BED REACTOR

The invention relates to an apparatus and to a process for decomposing dinitrogen monoxide. The apparatus comprises a gas inlet 1 for supplying a nitrogen monoxide-containing gas, a first heat exchange medium 3 for exchanging heat between an offgas and the nitrogen monoxide-containing gas, a heating apparatus 4 for occasional heating of the nitrogen monoxide-containing gas, a fixed bed reactor 5 in which a catalyst is accommodated, in order to decompose the dinitrogen monoxide in the dinitrogen monoxide-containing gas, a gas outlet through which the offgas leaving the fixed bed reactor can be conducted out via the heat exchange medium 3. According to the invention, the catalyst is suitable for decomposing dinitrogen monoxide at temperatures below 800°C, especially preferably below 450°C, more preferably below 400°C. The fixed bed reactor 5 is configured for operation in an adiabatic state.

MOBILE RECOVERY DEVICE FOR GAS EXHALED BY A PATIENT

The invention relates to a device for the dispensing and recovery of gas, comprising a gas bottle (3) containing a gas or a gaseous mixture containing at least one anesthetic compound and an adsorption container (1) containing at least an adsorbent material for adsorbing at least part of said anesthetic compound. The adsorption container (1) is conformed to form a sleeve around the body of the bottle (3). The bottle (3) and the adsorption container (1) are preferably arranged on a mobile cart (2) fitted with one or more wheels.

EQUIPMENT AND METHOD FOR GAS EXTRACTION IN GENERAL ANAESTHESIA

Contaminated air in general anaesthesia is extracted via a hemispherical hood (1) located closely over the patient. The hood (1), which is of a thin-wall transparent-shell form, is mounted for hand-touch variation of its orientation on an arm (2) which is carried by a telescopic column (3) that allows for height adjustment. The arm (2) extends from a unit (18) that allows the hood (1) to be swung horizontally about the column (3), and gas is drawn from the hood (1) near its open mouth (6) via a low-down port (7) (Figs 3 to 5) that is coupled through the arm (2) and column (3) to a fan unit (4). Relief (23) of the bottom margin of the hood (1) may be used to enhance access to the patient, and for manoeuvrability the column (3) is trolley-mounted or adjustable laterally on a fixed track (35) (Figs 9 and 10).

COMPONENTS FOR MEDICAL CIRCUITS

Breathable medical circuit components and materials and methods for forming these components incorporate breathable foamed materials that are permeable to water vapor and substantially impermeable to liquid water and the bulk flow of gases. The materials and methods can be incorporated into a variety of components, including tubes, Y-connectors, catheter mounts, and patient interfaces and are suitable for use in a variety of medical circuits, including insufflation, anesthesia, and breathing circuits.

Surgical exhaust mask

Mask includes support member with head band arranged horizontally to fit head of wearer. Conduit sections are secured to each side of support member, and flexible ventilation conduit is connected to exhaust means. Transparent face plate is held to support member in spaced relation to wearer's head. Aperture means in conduit allow ingress of air, and exhaust means connected to conduit sections exhaust air from ventilation conduit and interior of mask. In one form, means in upper portion of face plate admit airflow and direct it down over inner surface of face plate to prevent fogging. Hood of air-impermeable material fits over head and shoulders. Gown of similar material over body and lower part of hood and tied at neck completes assembly. Any leakage is that of sterile air from exterior to interior of mask because of continuously operating exhaust system.

On-line recovery of xenon from anaesthetic gas

A process is disclosed for separating a component from a gaseous mixture, in particular for separating xenon from the breathing gas exhaled by an anaesthetized patient. The disclosed process has the following steps: the gaseous mixture is brought into contact with a cooling surface at a temperature below the melting point of the components to be separated, the proportion of the gaseous mixture which is not condensed on the cooling surface in a solid state is carried away, and the component condensed on the cooling surface is heated above the melting point of the component to be separated. Also disclosed are a device for carrying out this process, a corresponding process for recovering anaesthetic gas and an associated anaesthetic equipment.

System, method and apparatus for removal of volatile anesthetics for malignant hyperthermia

Systems, methods, and apparatus for removing volatile anesthetics from an anesthesia or ventilation system to minimize the effects of malignant hyperthermia in susceptible patients. According to one aspect of the present invention, a system for removing volatile anesthetics is provided. A first filter component placed in fluid communication with an inspiratory limb of an anesthesia or ventilation system such that volatile anesthetics will pass through the first filter component during operation of the anesthesia or ventilation system. A second filter component is operably coupled to the expiration port of the anesthesia or ventilation system such that gases passing through the expiratory limb of the anesthesia or ventilation system pass through the second filter component. The first filter component and second filter component are adapted to effectively remove volatile anesthetics passing through the respective filters.

SYSTEMS AND METHODS FOR AN ULTRASONICALLY DRIVEN ANESTHETIC VAPORIZER

Methods and systems are provided for delivering anesthetic agent to a patient. In one embodiment, an anesthetic vaporizer includes a sump configured to hold a liquid anesthetic agent; an ultrasonic transducer coupled to a bottom of the sump and at least partially disposed within the sump; a vaporizing chamber fluidically coupled to the sump; and a heating element coupled to the vaporizing chamber and configured to increase a temperature of a surface disposed within the vaporizing chamber.

HELMET FOR ANESTHESIA

A helmet for anesthesia, adapted to keep confined anesthetic gases and to administer them in a non-invasive fashion to a patient laying on an operating table, allowing to provide oxygen and/or anesthetic gases through tubes and fast access to the patient's head in case of emergency is described. The helmet has a lower half-shell and an upper half-shell, the lower half-shell being anatomically shaped to receive and support the nape and the neck of the laying patient, the upper half-shell and the lower half-shell having fastening means for fastening one to the other and being configured to be fitted one to the other and to the neck or torso of the patient to form a substantially airtight enclosure for enclosing head of the patient, at least one inlet port for gas supply and at least one outlet port for gas evacuation being on the lower half-shell and/or the upper half-shell. 1. A helmet adapted to be worn by a patient laying on an operating table , comprising:a lower half-shell and an upper half-shell; andthe lower half-shell being anatomically shaped to receive and support the nape and the neck of the laying patient,wherein said upper half-shell and said lower half-shell having fastening means for fastening one to the other and are configured to be fitted one to the other and to the neck or torso of the patient to form a substantially airtight enclosure for enclosing the head of the patient; andwherein at least one inlet port for supplying gas and at least one outlet port for evacuating gas are defined on said lower half-shell and/or said upper half-shell.2. The helmet of claim 1 , wherein said lower half-shell and said upper half-shell are hinged one to the other.3. The helmet of claim 1 , further comprising means for securing said lower half-shell to said operating table.4. The helmet of claim 1 , further comprising airtight gaskets installed on said lower half-shell and upper half-shell to surround the neck or torso of the patient when the upper half-shell is ...

Bellows Bulb Occlusion Valve

A flow control device for blocking the flow of analgesic gas to the mask of an analgesic system includes a bellows-bulb at the distal end of the breathing circuit. The device can be easily operated by hand. By depressing the bellows when the mask is removed, gaseous pollution, such as nitrous oxide or other gas pollution, can be controlled while the system is purged.

Systems and methods for patient-proximate vapor transfer for respiratory therapy

Systems, methods, and devices for humidifying a breathing gas are presented. The system includes a source of pressurized breathing gas, a vapor transfer unit external to the source of pressurized breathing gas, a first gas tube connecting the source of pressurized breathing gas to the gas inlet of the vapor transfer unit and having a first length, a liquid supply having a heater that heats liquid, a first liquid tube coupling the liquid supply to the liquid inlet of the vapor transfer unit, and a second gas tube having a second length and connecting the gas outlet to a patient interface. The first length is greater than the second length. The vapor transfer unit includes a gas passage, a liquid passage, and a membrane separating the gas passage and the liquid passage. The membrane is positioned to transfer vapor from the liquid passage to the gas passage.

Device and a method for the decomposition of nitrous oxide in a gas stream

The present invention relates to a device and a method for the decomposition of nitrous oxide in a gas stream, in particular for the decomposition of nitrous oxide in the expiration air flow of a patient, wherein the gas stream is passed through a nitrous oxide decomposition reactor containing a nitrous oxide decomposition catalyst, preferably a noble metal catalyst, and the temperature is controlled in said nitrous oxide decomposition reactor.

Device for exchange of gas volumes

КОМПОНЕНТЫ ДЛЯ МЕДИЦИНСКИХ КОНТУРОВ

Изобретение относится к медицинской технике. Компоненты патрубка выдоха включают в себя паропроницаемые вспененные материалы, которые являются проницаемыми для водяного пара и, по существу, непроницаемыми для жидкой воды и объемного потока газов. Канал патрубка из вспененного полимера включает термопластичный эластомерный материал и ячеечные пустоты, распределенные внутри твердого материала. Изобретение позволяет увеличить прочность стенки патрубка при приемлемой паропроницаемости. 23 з.п. ф-лы,4 табл., 20 ил.

УСТАНОВКА ДЛЯ РЕКУПЕРАЦИИ ГАЛОГЕНИЗИРОВАННЫХ УГЛЕВОДОРОДОВ

... 1. Установка для рекуперации галогенированных углеводородов, с:десорбционным резервуаром (2), который принимает систему сорбат-сорбент, которая содержит галогенированные углеводороды,парогенератором (1), который выполнен для создания водяного пара из подведенной к парогенератору (1) воды и для введения созданного водяного пара в десорбционный резервуар (2) таким образом, что галогенированные углеводороды десорбируются из системы сорбат-сорбент и поглощаются водяным паром,охлаждающим устройством (3), которое выполнено для охлаждения смешанного с галогенированными углеводородами водяного пара таким образом, что образуется конденсат, иприемным резервуаром (4), который принимает конденсат.2. Установка по п. 1, имеющая также устройство (5) умягчения воды, которое расположено перед парогенератором (1) и которое выполнено для уменьшения степени жесткости подведенной воды.3. Установка по п. 1 или 2, имеющая также очистное устройство (6), которое расположено перед парогенератором (1) и которое выполнено ...

New pump, useful for conveying and compressing damp gases or gas mixtures, comprises a piston pump used for liquids

A pump for conveying and compressing damp gases or gas mixtures comprising a piston pump used for liquids, is new.

GASSAMMELEINRICHTUNG.

ANAESTHETIC GAS SCAVENGING SYSTEM

Gas extraction

Contaminated air in general anaesthesia is extracted via a hemispherical hood (1) located closely over the patient. The hood (1), which is of a thin-wall transparent-shell form, is mounted for hand-touch variation of its orientation on an arm (2) which is carried by a telescopic column (3) that allows for height adjustment. The arm (2) extends from a unit (18) that allows the hood (1) to be swung horizontally about the column (3), and gas is drawn from the hood (1) near its open mouth (6) via a low-down port (7) (Figs 3 to 5) that is coupled through the arm (2) and column (3) to a fan unit (4). Relief (23) of the bottom margin of the hood (1) may be used to enhance access to the patient, and for manoeuvrability the column (3) is trolley-mounted or adjustable laterally on a fixed track (35) (Figs 9 and 10).

Ventilation system for medical gases

A ventilation system (10) ventilates surrounding waste gases or bio-contaminants and the like exhaled from a patient or dissipated nearby in the vicinity of the face of the patient. The system generally comprises an envelope (20) having breathable surface portions (40) for collecting gases therethrough into a hollow interior (28) of the envelope. A suction port (30) coupled to the envelope collects the gases from the hollow interior for removal by a suction device (16). The use of an envelope having breathable surface portions which is at least partly flexible permits the system to be readily applied to a patient by simply placing the envelope under the head of the patient like a pillow.

Expiratory valve

An expiratory valve has a body 12 which defines an inlet port 13 and an annular valve seat 14. A valve body 15, incorporating a hollow control knob 16, screws into the body and carries a valve 17 and valve stem 18. The valve is biassed by spring 19 and the biassing force is adjustable by turning knob 16. Exhaust gases at pressures above the predetermined pressure flow through inlet 13 into a chamber 20 and out of an outlet port 21. A positive pressure relief valve is provided in the hollow knob 16 and comprises a mica disc 23 resiliently biassed by spring 25 against another valve seat 24. The hollow interior of the knob is in communication with chamber 20 by way of four holes 27 spaced at equiangular differences about the periphery of the valve body 15. The spring characteristics are such that at a predetermined pressure the disc lifts to allow gas to escape through an outlet port 28 in the knob 16. ...

SYSTEM FOR ADMINISTERING ANAESTHETIC GAS

EQUIPMENT FOR THE DELIVERY OF A GAS AT PATIENTS

DEVICE FOR THE DERIVATIVE OF INHALED GAS.

CONSTRUCTION UNIT F�R AN INHALATION DEVICE AND INHALATION DEVICE WITH THIS CONSTRUCTION UNIT

NASALE VESTIBULARE MECHANISM

KOLLATERALES BREATHING BYPASS SYSTEM WITH RETENTION CHARACTERISTICS

DEVICE FOR RECOVERING OF ANAESTHETIC

NARKOSE AND/OR RESPIRATOR WITH MOEGLICHER MANUAL CONTROL.

LUNG DOSING SYSTEM

PROCEDURE AND DEVICE FOR THE RECUPERATION OF GASES

XENON EXTERNAL RECYCLING UNIT FOR RECOVERY, PURIFICATION AND REUSE OF XENON IN ANAESTHESIA CIRCUITS

Methods and apparatus for reducing loss of respiratory promoters

Anesthesia reversal methods and systems

An apparatus for reversing inhaled anesthesia, which may be configured to be positioned along a breathing circuit or anesthesia delivery circuit, includes an anesthesia removal component and a blood flow acceleration component. The blood flow acceleration component facilitates an increase in the ventilation of the individual without resulting in a significant decrease in the individual's P a CO 2 level and, thus, a decrease in the rate at which blood flows through the individual's brain. A method of reversing the effects of inhaled anesthesia includes increasing the rate of ventilation of an anesthetized individual while causing the individual to inhale gases with at least atmospheric amounts of CO 2 .

Systems and methods for gas treatment

A system and process for the recovery of at least one halogenated hydrocarbon from a gas stream. The recovery includes adsorption by exposing the gas stream to an adsorbent with a lattice structure having pore diameters with an average pore opening of between about 5 and about 50 angstroms. The adsorbent is then regenerated by exposing the adsorbent to a purge gas under conditions which efficiently desorb the at least one adsorbed halogenated hydrocarbon from the adsorbent. The at least one halogenated hydrocarbon (and impurities or reaction products) can be condensed from the purge gas and subjected to fractional distillation to provide a recovered halogenated hydrocarbon.

Non-invasive ventilation exhaust gas venting

A non-invasive ventilation patient interface comprises a fresh gas entry port, an exhaust gas vent port, and a filter media disposed in the exhaust gas vent port. The fresh gas entry port is configured for coupling with a fresh gas supply. The exhaust gas vent port is configured for allowing expulsion of exhaust gas from the patient interface in response to exhalation of a patient. The filter media is configured for filtering contagious from the exhaust gas, diffusing the exhaust gas, and controlling an expulsion flow of the exhaust gas through the exhaust gas vent port.

System, Method and Apparatus for Removal of Volatile Anesthetics for Malignant Hyperthermia

Systems, methods, and apparatus for removing volatile anesthetics from an anesthesia or ventilation system to minimize the effects of malignant hyperthermia in susceptible patients. According to one aspect of the present invention, a system for removing volatile anesthetics is provided. A first filter component placed in fluid communication with an inspiratory limb of an anesthesia or ventilation system such that volatile anesthetics will pass through the first filter component during operation of the anesthesia or ventilation system. A second filter component is operably coupled to the expiration port of the anesthesia or ventilation system such that gases passing through the expiratory limb of the anesthesia or ventilation system pass through the second filter component. The first filter component and second filter component are adapted to effectively remove volatile anesthetics passing through the respective filters.

ANESTHETIC CIRCUIT AND A METHOD FOR USING THE ANESTHETIC CIRCUIT

An anesthetic circuit is provided for treating a patient. The anesthetic circuit comprises a membrane comprising a polymeric material. In one embodiment, the membrane is at least partially impervious to exhaled molecular anesthetic agent and is substantially pervious to exhaled oxygen and exhaled carbon dioxide. In a further embodiment, a method is provided for anesthetic treatment of a patient. 1. An anesthetic circuit for treating a patient , comprising:a flow passage;an anesthetic agent inlet in fluid communication with the flow passage for introducing an external anesthetic agent into the flow passage;an exit outlet in fluid communication with the flow passage for providing at least the external anesthetic agent to the patient; a membrane comprising at least one polymeric material, in fluid communication with the flow passage, located downstream from the entry inlet, and at least partially impervious to the exhaled molecular anesthetic agent to at least partially retain the exhaled molecular anesthetic agent in the flow passage after the exhaled fluid mixture contacts the membrane, wherein', 'the membrane is pervious to the exhaled oxygen such that the membrane has an exhaled oxygen-to-exhaled molecular anesthetic agent selectivity of greater than 1,', 'the membrane is pervious to the exhaled carbon dioxide such that the membrane has an exhaled carbon dioxide-to-exhaled anesthetic molecular agent selectivity of greater than 1,', 'the exhaled fluid mixture contacts the membrane to leave a modified fluid mixture in the flow passage having a lower amount of the exhaled carbon dioxide than the exhaled fluid mixture, and', 'the exit outlet is located downstream from the membrane and provides at least the modified fluid mixture to the patient; and, 'an entry inlet for receiving an exhaled fluid mixture from the patient, the exhaled fluid mixture comprising an exhaled oxygen, an exhaled carbon dioxide and an exhaled molecular anesthetic agent, the flow passage being in ...

Anesthetic Inhalation Aid Device and Attachment Used for the Same

An inhalation mask, an artificial nose unit, an anesthetic gas concentration detector, an extension tube, an anesthesia attachment, and an elastic bag are in communicative connection in sequence. The elastic bag has a mixing chamber formed therein and has an anesthetic inlet, an air inlet, and an outlet port each formed at the boundary to the exterior. The anesthesia attachment includes a hollow structure and an evaporation injector syringe. The outlet port of the elastic bag is in communicative connection with the hollow structure through its opening, and the evaporation injector syringe tightly mates with the interior of another opening. The anesthetic introduced into the mixing chamber is vaporized and then mixed with air introduced from the air inlet into mixed gas. The mixed gas is supplied from the outlet port to the inhalation mask by compressing the elastic bag or other procedures.

Closed loop control system for a high frequency oscillation ventilator

A control system for a high frequency oscillating ventilator (HFOV) includes an oscillator controller and a mean airway pressure (MAP) controller. The HFOV includes a reciprocating piston which is adapted to generate positive and negative pressure waves for delivery to a patient airway. The oscillator controller comprises a pair of closed loop control circuits including an oscillator pressure loop and a centering loop which are collectively adapted to regulate frequency and amplitude of piston reciprocations and centering of the piston. The MAP controller comprises a closed loop control circuit that is adapted for regulating MAP at the patient utilizing feedback in the form of patient circuit pressure. Likewise, the oscillator controller utilizes patient circuit pressure as well as piston displacement feedback in order to regulate movement of the piston.

Methods, Systems and Devices for Non-Invasive Open Ventilation For Providing Ventilation Support

A system for providing ventilation support to a patient may include a ventilator, a control unit, a gas delivery circuit with a proximal end in fluid communication with the ventilator and a distal end in fluid communication with a nasal interface, and a nasal interface. The nasal interface may include at least one jet nozzle at the distal end of the gas delivery circuit; and at least one spontaneous respiration sensor for detecting respiration in communication with the control unit. The system may be open to ambient. The control unit may receive signals from the at least one spontaneous respiration sensor and determine gas delivery requirements. The ventilator may deliver gas at a velocity to entrain ambient air and increase lung volume or lung pressure above spontaneously breathing levels to assist in work of breathing, and deliver ventilation gas in a cyclical delivery pattern synchronized with a spontaneous breathing pattern.

ENTRAINMENT COVER AND INTAKE MODULE HAVING THE SAME

An intake module includes an outer tube body defining an intake chamber and having an intake end, and an inner tube body disposed in the outer tube body and having an intake hole communicating with the intake chamber. An intake lid covers the intake end and has an inlet hole for allowing the intake chamber to be in fluid communication with the outside so that a compressed gas is fed into the inlet hole. A needle tube defines a jet hole for spraying the compressed gas from the needle tube into the intake hole. When the compressed gas is delivered from the intake lid into the inner tube body, air is drawn into the intake hole to mix with the compressed gas according to Venturi effect. 1. An intake module comprising:an air delivery tube including an outer tube body and an inner tube body disposed in said outer tube body, said outer tube body having an intake end, an exhaust end opposite to said intake end, an intake chamber that is defined by said outer tube body and that is open at said intake end, and an intake port that is formed between said intake end and said exhaust end and that exposes said intake chamber, said inner tube body extending from said exhaust end towards said intake end and having an exhaust hole disposed at an end thereof and adjoining said exhaust end, and an intake hole disposed at an opposite end thereof and in fluid communication with said intake chamber;an intake lid covering said intake end and sealing said intake chamber, said intake lid having an inlet hole adapted for allowing said intake chamber to be in fluid communication with the outside therethrough so that a compressed gas is fed into said inlet hole;an entrainment cover sleeved on the end of said inner tube body formed with said intake hole and having a positioning hole formed therethrough and disposed between said inlet hole and said intake hole, and an entrainment port disposed between and in fluid communication with said intake chamber and said intake hole; anda needle tube ...

Drug Delivery System And Method For Conscious Sedation/Analgesia

Inhalant anesthetics are developed with a number of properties including rapid onset and recovery, controllability, and, ideally, a broad safety profile. The efficacy of these agents is measured by their ability to create anesthesia within the framework of the other desirable properties. The instant invention focuses on the dosage level where analgesia occurs but amnesia or lack of consciousness does not. In addition to identifying the dosage level where pain is sharply reduced or eliminated but awareness remains, a delivery system for safe and effective delivery of the agent is described.

Electronically controlled high-frequency jet ventilation laryngoscope

An electronically controlled high frequency jet ventilation laryngoscope includes a laryngoscope handle and a laryngoscope blade. An oxygen supply tube is set within the laryngoscope handle and the front end of oxygen supply tube is placed on the front end of the laryngoscope blade. The laryngoscope also includes an electronic controller having a shell body, a display screen, a solenoid valve, a power supply module, a control module and a control switch. The shell body is fixed at the top of the laryngoscope handle; the display screen and control switch are on the shell body; the power supply module and control module are within the shell body; the solenoid valve is on the oxygen supply tube within the laryngoscope handle; the display screen, control module and control switch are connected with the power supply module; and the control module is connected with the display screen and the solenoid valve, respectively.

Methods, Devices and Formulations for Targeted Endobronchial Therapy

The present invention provides a method and novel devices for treating tracheobronchitis and pneumonia in the intubated patient, preferably with aerosolized anti gram-positive and anti-gram negative antibiotics administered in combination or in seriatim in reliably sufficient amounts for therapeutic effect. In one embodiment the result is achieved mechanically. In another embodiment, the result is achieved by aerosol formulation. In a preferred embodiment, the invention assures the result when aerosol is delivered directly to the airways distal of the ventilator circuit. The devices eliminate the dosage variability that ventilator systems engender when aerosols are introduced via the ventilator circuit. The treatment also concentrates the therapeutic agent specifically at affected sites in the lung such that therapeutic levels of administrated drug are achieved without significant systemic exposure of the patient to the drug. The invention further provides a dose control device to govern this specialized regimen.

SYSTEM FOR COLLECTING NITROUS OXIDE IN EXHALATION AIR

A system for collecting nitrous oxide in exhalation air and subsequently delivering the nitrous oxide to further processing which comprises a number of mutually replaceable adsorption units (). Every unit has a nitrous oxide reversible adsorbent () and: i) an inlet port () and an outlet port () for exhalation air, ii) an inlet port () and an outlet port () for desorbing gas, together with A) a docking arrangement () which is associated with adsorption of nitrous oxide and used for connecting a face mask () to the inlet port (), and B) a docking arrangement () which is associated with desorption of nitrous oxide and used for connecting the outlet port () to further processing of nitrous oxide. Another aspect is an adsorption unit () unit as defined in the preceding paragraph which is capable of being regenerated by passing a desorbing gas through the adsorbent. 124-. (canceled)25. A system for{'sub': 'mask', 'I) collecting nitrous oxide in air exhaled by an individual inhaling nitrous oxide via a face mask arrangement (=face mask) having an outlet OLfor exhalation, and'}{'sub': 'app', 'II) delivering the nitrous oxide collected in (I) to an inlet port IPof an apparatus for further processing of nitrous oxide,'}wherein the system comprises a pool of one or more mutually replaceable through-flow adsorption units, each of which comprises a nitrous oxide reversible adsorbent placed in a through-flow chamber and has:{'sub': 'ads', 'i) an inlet port IPfor inlet of exhalation air (adsorption flow),'}{'sub': 'ads', 'ii) an outlet port OPfor discharging gas processed in the chamber to a waste recipient,'}{'sub': 'des', 'iii) an inlet port IPfor inlet of a desorbing gas (desorption flow), and'}{'sub': 'des', 'iv) an outlet port OPfor discharging desorbing gas from the adsorbent, together with'}{'sub': ads', 'ads', 'mask', 'ads, 'A) a docking arrangement DAwhich is associated with adsorption of nitrous oxide and comprises a connection C1for connecting the outlet port OLto the ...

Optimized Breathing Assistance Device

A breathing assistance device with improved pressure characteristics is disclosed. The device is capable of providing a high level of CPAP per unit of supplementary respirable gas consumed while maintaining low CPAP fluctuations throughout the breath cycle. The invention further optionally comprises a manometer for monitoring pressure and a safety pressure relief valve as additional safety measures against overpressure delivered to a patient. The device may be made to be completely disposable for one-time or single patient use.

SYSTEMS AND METHODS FOR ANESTHETIZING A RODENT

The present disclosure includes a method comprising positioning a nose of a rodent within a nose chamber of a device for anesthetizing the rodent, the nose chamber configured to partially enclose an anesthetizing gas and hold the nose of the rodent in contact with the anesthetizing gas, delivering a positive flow of the anesthetizing gas into the nose chamber through a gas intake channel sufficient to anesthetize the rodent, supplying a waste gas reservoir to collect the anesthetizing gas, the waste gas reservoir in communication with the nose chamber through a gas transport channel and coupled with the nose chamber in an open configuration allowing the anesthetizing gas and ambient air to flow into the waste gas reservoir, and actively retrieving the anesthetizing gas and ambient air from the waste gas reservoir with a negative flow conveyed through a gas outtake channel in communication with the waste gas reservoir. 1. A device for anesthetizing a rodent comprising:a nose chamber configured to at least partially enclose an anesthetizing gas and to position and hold in contact with the anesthetizing gas a nose of the rodent;a gas intake channel in communication with the nose chamber and configured to deliver a positive flow of the anesthetizing gas into the nose chamber, the positive flow sufficient to anesthetize the rodent;a waste gas reservoir configured to collect the anesthetizing gas, the waste gas reservoir coupled with the nose chamber in an open configuration allowing the anesthetizing gas and ambient air to flow into the waste gas reservoir;a gas transport channel configured to conduct the anesthetizing gas from the nose chamber to the waste gas reservoir; anda gas outtake channel in communication with the waste gas reservoir and configured to convey a negative flow that actively retrieves the anesthetizing gas and ambient air from the waste gas reservoir.2. The device of claim 1 , wherein the positive flow of the anesthetizing gas into the nose chamber ...

VENT ARRANGEMENT FOR RESPIRATORY MASK

A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area, such as one defined by gears, radial exhaust revolvers and/or flow diverters for a conduit having a variable gas passage channel. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid, motor or voice coil, manipulates the vent assembly. The actuator may be configured for control by a processor to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection and/or leak detection. 1. An apparatus for automated control of gas washout of a patient interface of a respiratory treatment apparatus comprising:a vent assembly having a variable exhaust area, the vent assembly being associated with a patient interface to vent expiratory gas, the vent assembly including a first gear having a first flow bore; andan actuator to manipulate orientation of the flow bore of the first gear to vary the exhaust area.2. The apparatus of further comprising a second gear claim 1 , the second gear including a second flow bore claim 1 , the first and second gears adapted in a meshed configuration.3. The apparatus of wherein a rotation of the first and second gears closes of the first and second flow bores to prevent a transfer of gas through a conduit of the vent assembly.4. The apparatus of wherein a rotation of the first and second gears opens the first and second flow bores to permit a transfer of gas through a conduit of the vent assembly.5. The apparatus of wherein the first gear comprises a set of teeth surrounding a periphery of the first gear.6. The apparatus of further comprising a controller including a processor claim 1 , the controller coupled with the actuator claim 1 , the controller configured to operate the ...

COMBINATION ANESTHESIA AND SCAVENGER SURGICAL MASK

A surgical mask for administering and/or scavenging medical gases includes a nasal mask and an oral mask that envelops the nasal mask. The nasal mask is secured to the oral mask and may be removable from it. 1. A surgical mask assembly for administering and scavenging medical gases , comprising:an outer shell having a gas port, the outer shell defining a chamber with a rear-facing opening defined by a rim, the rim having an inner edge and an outer edge, andan inner shell having a gas port, the inner shell defining a chamber with a rear-facing opening defined by a rim, the rim having an inner edge and an outer edge,wherein a superior-most point of the inner edge of the rim of the inner shell is positioned inferiorly and anteriorly relative to a superior-most point of the inner edge of the rim of the outer shell.2. The surgical mask assembly of claim 1 , wherein the entire inner shell is located in the chamber of the outer shell.3. The surgical mask assembly of claim 1 , further comprising a flexible seal secured to the rim of the inner shell claim 1 , wherein the flexible seal is located in the chamber of the outer shell.4. The surgical mask assembly of claim 1 , wherein:the outer shell envelops a patient's nose and mouth when the surgical mask assembly is positioned on the face of the patient, andthe inner shell envelops the patient's nose when the surgical mask assembly is positioned on the face of the patient.5. The surgical mask assembly of claim 1 , further comprising:a flexible seal secured to the rim of the inner shell, anda flexible seal secured to the rim of the outer shell.6. The surgical mask of claim 1 , wherein:the gas port of the inner shell comprises a first tube,the gas port of the outer shell comprises a second tube, andthe first tube is positioned within the second tube.7. A surgical mask assembly for administering and scavenging medical gases claim 1 , comprising:an oral mask configured to envelop a patient's nose and mouth when the surgical mask ...

Assessment and treatment of respiratory fatigue

Objective Pulmonary Function (PF) evaluation for respiratory fatigue is vital to the diagnosis and management of many pediatric respiratory diseases in the intensive care, emergency and outpatient settings. A non-invasive PF instrument utilizes sensors and software to access respiratory breathing patterns, vital parameters, asynchrony and measures the work of breathing. Software algorithms predict respiratory fatigue. The hardware includes a microcircuit board that individually links to rib cage (RC) and abdominal (ABD) inductance bands. The bands wirelessly transmit changes in RC and ABD circumference. Point-of-care, real-time indices of respiratory work, breathing patterns and respiratory fatigue indices are developed on a user-friendly graphical user interface. The diagnostic data can later be securely emailed as an attachment for entry into patients' electronic medical records or sent to a caretaker's computer, or used directly to control a respiratory therapy device. The system can also be used for telemedicine homecare.

MECHANICAL VENTILATOR WITH NON-INVASIVE OPTION

A ventilator includes a bidirectional breath detection airline and a flow outlet airline. The flow outlet airline includes an airline outlet. The flow outline airline is configured to be connected to an invasive ventilator circuit or a noninvasive ventilator circuit. The breath detection airline includes airline inlet. The airline inlet is separated from the airline outlet of the flow outline airline. The ventilator further includes a pressure sensor in direct fluid communication with the breath detection airline. The pressure sensor is configured to measure breathing pressure from the user and generate sensor data indicative of breathing by the user. The ventilator further includes a controller in electronic communication with the pressure sensor. The controller is programmed to detect the breathing by the user based on the sensor data received from the pressure sensor. 1. A ventilator , comprising:a tubing configured to receive an input gas;a flow outlet airline in fluid communication with the tubing, wherein the flow outlet airline includes an airline outlet, and the flow outlet airline is configured to supply an output gas to a user via the airline outlet;a breath detection airline including an airline inlet, wherein the airline inlet is separated from the airline outlet of the flow outline airline, and the breath detection airline is configured to receive breathing gas from the user during exhalation by the user via the airline inlet;a pressure sensor in direct fluid communication with the breath detection airline, wherein the pressure sensor is configured to measure breathing pressure from the user, and the pressure sensor is configured to generate sensor data indicative of breathing by the user; anda controller in electronic communication with the pressure sensor, wherein the controller is programmed to detect the breathing by the user based on the sensor data received from the pressure sensor;wherein the flow outline airline is configured to be connected to ...

PULSED PRESSURE SWING ADSORPTION SYSTEM AND METHOD

A pressure swing adsorption (PSA) system and methods for controlling each PSA cycle performed by the PSA system to produce oxygen enriched gas during productive portions of a user breathing cycle, and to cease production of oxygen enriched gas during non-productive portions of the user breathing cycle, is provided. The PSA system synchronizes PSA cycle phases including adsorption and desorption phases with a user's individual inhalation and exhalation phases, on a breath by breath basis, such that each PSA cycle can be dynamically varied from a succeeding PSA cycle, in real time in response to variations in the user's breathing cycle. An oxygen delivery device including a breathing cycle sensor provides breathing cycle inputs to a controller for use with at least one algorithm to detect breathing flow phases during each user breath, and to synchronize each PSA cycle to the user's breathing flow phases, on a breath-by-breath basis. 1. An oxygen concentrator system comprising:a pressure swing adsorption (PSA) system including:a gas outlet configured to flow oxygen enriched gas to a user of the oxygen concentrator;the PSA system configured to execute a PSA cycle to produce the oxygen enriched gas;a sensor in communication with the gas outlet and the PSA system;wherein the sensor is configured to sense a breathing parameter of a breathing cycle of the user;wherein the breathing cycle includes a plurality of breaths; receive, from the sensor, a breathing input defined by the breathing parameter;', 'determine each respective breath, using the breathing input; and', 'synchronize execution of the PSA cycle with each respective breath such that a plurality of PSA cycles is executed during each respective breath., 'wherein the PSA system is further configured to2. The oxygen concentrator system of claim 1 , wherein each respective breath includes an inhalation phase and an exhalation phase; andwherein the PSA system is configured to synchronize actuation of the flow of the ...

VENTILATION MASK

Disclosed is a nasal ventilation mask having separate ports to monitor end-tidal COexpulsion integrated into the mask in order to monitor end-tidal COexpelled nasally or orally. Also disclosed is a CPR mask for nose-to-mouth and/or mouth-to-mouth resuscitation, having a body shaped to cover the nose and/or mouth of a victim, said mask including a COabsorber for eliminating at least in part rescuer's exhaled COdelivered to the victim. 1. A nasal ventilation mask having an integrated end-tidal COmonitor for monitoring end-tidal COexpelled nasally and/or orally by a patient.2. The mask of claim 1 , wherein the mask is adapted for use as an oxygen transport mask claim 1 , or as a ventilation mask providing Oand anesthesia gases claim 1 , and said end-tidal COmonitor is adapted for monitoring end-tidal COsimultaneously or sequentially.3. The mask of claim 1 , wherein said mask is adapted for CPAP pre-operatively claim 1 , intra-operatively claim 1 , and/or post-operatively.4. The mask of claim 1 , wherein said mask is adapted for connection to a resuscitator bag such that a patient's mouth and airway are not obstructed by the resuscitator bag claim 1 , whereby to allow for direct laryngoscopy and intubation.5. The mask of claim 1 , said mask having an Oport for introducing oxygen into the mask claim 1 , and a ventilation port and a gas monitoring attachment integral to or attached to the ventilation port.6. The mask of claim 1 , further comprising an anesthesiologist controlled 2-way claim 1 , 3 port valve permitting an anesthesiologist to switch between separately monitoring nasal and oral end-tidal CO claim 1 , or simultaneously monitoring nasal and oral end-tidal CO claim 1 , wherein when oral end-tidal COmonitoring is chosen claim 1 , ventilation gases expelled orally by the patient are also monitored.7. The mask of claim 1 , having an exterior opening under a nose region of the mask claim 1 , adapted to overlie a patient's lip region claim 1 , wherein said opening ...

METHOD FOR INHALATION EFFECT ON THE BODY, AND APPARATUS FOR IMPLEMENTING SAME

The invention allows for considerably improving the efficiency of inhalation treatment of various diseases and conditions in pulmonology, therapy, intensive treatment, anesthesiology, and sports medicine and is provided with new integral technical solutions while employing the opportunities of microelectronic technology and modern components. A modular structure of the apparatus simplifies its manufacture, ensures the ease of setting it up, and operation in various operating modes. When using the invention, monitoring of the ventilation indicators and patient condition with achieving his high safety level may be ensured; in sports medicine a problem of rehabilitation and training of athletes with the background of extreme loads and increased ventilation indicators is solved. 1. A method of the inhalation effect on the human body consisting in forming a respiratory mixture on the basis of oxygen and/or air and feeding same to a patient with the addition of anesthetic vapors and/or of an aerosol of medicinal agents to the respiratory mixture , characterized by that the respiratory-mixture feeding mode is set with the help of the control module via the rebreathing or non-rebreathing loop through artificial lung ventilation and/or autonomous breathing; wherein the flow and pressure of each gas is monitored by means for automating adjustment and monitoring connected with it by setting the isodromic flow of each gas in accordance with the signals from the control module; wherein the total flow is independently measured and controlled by setting the necessary flow as per signals of the control module; and also inhalation and exhalation lines are connected/disconnected to/from the atmosphere in line with the signals from the control module.2. A method according to claim 1 , wherein the respiratory mixture is generated as a two-component mixture of oxygen with helium claim 1 , xenon claim 1 , or nitrogen oxide.3. A method according to claim 1 , wherein in case of artificial ...

Multi-Stage Nasal Filter

Devices and methods of inhibiting the inhalation of particulates using a resiliently deformable filter packaged in a sealed envelope containing a liquid medium. The method includes opening the sealed package to thereby expose the filter to ambient air; removing the filter from the package; inserting the filter into a distal region of a nostril; and urging the filter from the distal region to a proximal region of the nostril while simultaneously swabbing the distal region with the liquid disinfectant. The filter includes: an initial stage characterized by a first pore size; an intermediate stage characterized by a second pore size; and a final stage characterized by a third pore size, wherein the third pore size is a smaller than the first and second pore sizes. 1. A method of impeding the inhalation of particulates using a resiliently deformable filter packaged in a sealed envelope containing a liquid medium , the method comprising:opening the sealed package to thereby expose the filter to ambient air;removing the filter from the package;inserting the filter into a distal region of a nostril; andurging the filter from the distal region to a proximal region of the nostril while simultaneously swabbing the distal region with liquid medium present on the perimeter of the filter.2. The method of wherein the filter is characterized by a mean pore size in the range of 0.5 to 50 micrometers (um).3. The method of wherein the particulates comprise allergens claim 1 , and further wherein the filter is characterized by a mean pore size in the range of 3 to 7 um.4. The method of wherein the liquid medium comprises an antiseptic.5. The method of wherein the liquid medium comprises a disinfectant.6. The method of wherein the particulates comprise microorganisms.7. The method of wherein the particulates comprise allergens.8. The method of wherein the filter comprises electrostatic material.9. The method of wherein the liquid medium comprises povidone iodine.10. The method of ...

SYSTEMS AND METHODS FOR REVERSE PRESSURE PULSE THERAPY DELIVERY

A system and method for providing a therapy to a subject may include a lumen configured to be coupled to a portion of a respiration passage of the subject to receive air respired by the subject. A sensor is configured to monitor the lumen and generate a signal based on the air respired by the subject. A pressure pulse delivery system is configured to deliver a pressure pulse along the lumen to the subject and a reservoir of therapeutic agent is coupled to the lumen. A processor is configured to receive the signal from the sensor, determine, from at least the signal, an exhalation period of the subject, and based on the exhalation period, cause the pressure pulse delivery system to deliver a pressure pulse to the subject. Following the pressure pulse, the processor can cause the therapeutic agent to be delivered from the reservoir. 1. A system for providing a therapy to a subject , the system comprising:a lumen configured to be coupled to a portion of a respiration passage of the subject to receive air respirated by the subject;a sensor configured to monitor the lumen and generate a signal based on the air respirated by the subject;a pressure pulse delivery system configured to deliver a pressure pulse along the lumen to the subject;a supply of therapeutic agent coupled to the lumen; and receive the signal from the sensor;', 'determine, from at least the signal, an exhalation of the subject;', 'based on the exhalation, cause the pressure pulse delivery system to deliver a pressure pulse to the subject; and', 'following the pressure pulse, cause the therapeutic agent to be delivered from the supply., 'a processor configured to2. The system according to wherein the processor is further configured to determine claim 1 , from at least the signal claim 1 , an inhalation of the subject.3. The system according to wherein the processor is further configured to cause the pressure pulse delivery system to pause delivery of the pressure pulse when the processor detects the ...

Material recovery and capture device for atomized material delivery apparatuses

A recovery and collection assembly for an atomized material inhalation device is provided. The recovery and collection assembly includes an outer tubular housing and an input tube. The outer tubular housing includes a sidewall defining an outer chamber, an upper end piece attached to an upper end of the sidewall, and a lower end piece attached to a lower end of the sidewall. The lower end piece has at least one air flow opening allowing fluid communication between an interior of the outer chamber and an atmosphere surrounding the outer tubular housing. The input tube extends through the lower end piece and has a first end in fluid communication with the atomized material inhalation device. The input tube also has a second end disposed in an upper half of the outer chamber and in fluid communication with the outer chamber and defines an inner chamber.

PATIENT INTERFACE COMPRISING A GAS WASHOUT VENT

A gas washout vent for a patient interface may be configured to allow a flow of patient exhaled gas to an exterior of the patient interface to minimise rebreathing of exhaled gas by the patient and the vent may include: a plurality of vent passages extending between a first and a second side of the vent, each vent passage may include: a plurality of first openings extending from the first side towards the second side, said first openings being uniform in size and shape; a plurality of second openings extending from the second side towards the first side, said second openings being uniform in size and shape; and wherein the first openings and the second openings partially overlap each other at an interface to form constricted passages therebetween. 192.-. (canceled)93. A gas washout vent for a patient interface , the gas washout vent configured to allow a flow of patient exhaled gas to an exterior of the patient interface to minimise rebreathing of exhaled gas by a patient , said gas washout vent comprising:a plurality of vent passages extending through a first side of the gas washout vent and a second side of the gas washout vent, each vent passage comprising:a plurality of first openings extending through the first side towards the second side, said first openings being uniform in size and shape;a plurality of second openings extending through the second side towards the first side, said second openings being uniform in size and shape; andwherein the first side and the second side are fixed together such that the first openings and the second openings partially overlap each other at an interface to form constricted passages therebetween.94. The gas washout vent of claim 93 , wherein the first openings and the second openings terminate at the interface to form the constricted passages.95. The gas washout vent of claim 93 , wherein the interface is curved.96. The gas washout vent of claim 93 , wherein the interface is flat.97. The gas washout vent of claim 93 , ...

Capnography Module with Automatic Switching Between Mainstream and Sidestream Monitoring

A capnography module for a patient monitoring system includes a hardware switching mechanism and a software mechanism for switching the capnography module automatically between a mainstream monitoring mode and a sidestream monitoring mode. The hardware switching mechanism along with software detection is capable of detecting the connection of a mainstream capnography sensor and a sidestream sampling line and generates flags to notify the software switching mechanism which sensor or line is connected. The software switching mechanism notifies a controller board in the module which monitoring system is available and the controller board operates the module in the respective mode. The capnography module also includes a connector latching mechanism for securing the mainstream capnography sensor to the module and preventing accidental disconnection. 1. A capnography module for use with a patient monitoring system , said capnography module comprising:a monitor connector for connecting said capnography module to a monitor of said patient monitoring system, said monitor connector providing a pathway for data transmission between said capnography module and said patient monitoring system;a mainstream connector for connecting a mainstream capnography sensor to said capnography module;a sidestream port for connecting a sidestream sampling line to said capnography module;a mainstream gas values parser for analyzing data provided by a mainstream capnography sensor attached to said mainstream connector;a sidestream capnography sensor for monitoring gases provided by a sidestream sampling line attached to said sidestream port;a sidestream gas values parser for analyzing data provided by said sidestream capnography sensor;a hardware switching mechanism, comprising a plurality of circuits and communication interfaces between said circuits;a controller circuit in communication with said hardware switching mechanism and said monitor of said patient monitoring system; and,a software ...

SYSTEM AND METHOD FOR HIGH FLOW OXYGEN THERAPY

A method of method of high flow oxygen therapy (HFOT) and carbon dioxide (CO) monitoring includes delivering high flow oxygen therapy (HFOT) via a central lumen of a nasal cannula, the nasal cannula comprising a proximal end, a distal end positioned within a pharynx region of a patient's airway, and the central lumen and a sampling lumen formed within a wall of the nasal cannula. The method also includes receiving sampled exhaled breath of the patient via the sampling lumen at a COmonitor, wherein the sampling lumen is configured to sample the exhaled breath at the pharynx region through the CO2-permeable membrane and direct the sampled exhaled breath to a COmonitor fluidly coupled to the sampling lumen and determining a level of COin the exhaled breath using the COmonitor. 1. A method of high flow oxygen therapy (HFOT) and carbon dioxide (CO) monitoring comprising:{'sub': 2', '2', '2, "delivering high flow oxygen therapy (HFOT) via a central lumen of a nasal cannula, the nasal cannula comprising a proximal end, a distal end positioned within a pharynx region of a patient's airway, and the central lumen, and further comprising an inflatable cuff coupled to an exterior wall of the nasal cannula to anchor the distal end within the pharynx region and a sampling lumen formed within a wall of the nasal cannula, the sampling lumen terminating in a carbon dioxide (CO) permeable membrane positioned at or near the distal end of the nasal cannula, and wherein the CO-permeable membrane is selectively permeable to COrelative to oxygen;"}{'sub': 2', '2', '2, 'receiving sampled exhaled breath of the patient via the sampling lumen at a COmonitor, wherein the sampling lumen is configured to sample the exhaled breath at the pharynx region through the CO-permeable membrane and direct the sampled exhaled breath to a COmonitor fluidly coupled to the sampling lumen; and'}{'sub': 2', '2, 'determining a level of COin the exhaled breath using the COmonitor.'}2. The method of claim 1 , ...

BYPASS FILTER

A bypass filter comprising a conduit having a main passageway configured for passage of fluid from an upstream end of the conduit to a downstream end of the conduit; The bypass filter further comprises a main filter located within the main passageway and configured for preventing passage therethrough of a predetermined substance within the fluid, while allowing a remainder of the fluid to pass towards the downstream end of the conduit; The bypass filter has an upstream opening in the conduit located upstream of the main filter and being in fluid communication with the main passageway at an upstream end of the conduit and a downstream opening in the conduit located downstream of the main filter and being in fluid communication with the main passageway at a downstream end of the conduit; The bypass filter also comprises an auxiliary filter being in fluid communication with both the upstream opening and the downstream opening for passing the fluid between the openings while at least partially absorbing the substance. 1. A bypass filter comprising:a conduit having a main passageway configured for passage of fluid from an upstream end of the conduit to a downstream end of the conduit;a main filter located within said main passageway and configured for preventing passage therethrough of a predetermined substance within said fluid, while allowing a remainder of said fluid to pass towards the downstream end of the conduit;an upstream opening in said conduit located upstream of the main filter and being in fluid communication with said main passageway at an upstream end of the conduit and a downstream opening in said conduit located downstream of the main filter and being in fluid communication with said main passageway at a downstream end of the conduit; andan auxiliary filter being in fluid communication with both said upstream opening and said downstream opening for passing said fluid between the openings while at least partially absorbing said substance.2. A bypass ...

CONVERSION OF NITROGEN DIOXIDE (NO2) TO NITRIC OXIDE (NO)

Various systems, devices, NOabsorbents, NOscavengers and NOrecuperator for generating nitric oxide are disclosed herein. According to one embodiment, an apparatus for converting nitrogen dioxide to nitric oxide can include a receptacle including an inlet, an outlet, a surface-active material coated with an aqueous solution of ascorbic acid and an absorbent wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material and the absorbent such that nitrogen dioxide in the gas flow is converted to nitric oxide. 125.-. (canceled)26. A system of delivering a therapeutic amount of nitric oxide to a mammal comprising:a ventilator,{'sub': '2', 'an NOscavenger selected from the group consisting of proline, diphenylamine, a secondary amine and a tertiary amine, and'} wherein the surface-active material includes an absorbent and a reducing agent; and', 'wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material, such that nitrogen dioxide in the gas flow is converted to nitric oxide., 'a receptacle including an inlet, an outlet, and a surface-active material;'}27. The system of claim 26 , wherein the absorbent is silica gel.28. The system of claim 26 , wherein the absorbent is activated alumina.29. The system of claim 26 , further comprising a gas source of nitrogen dioxide claim 26 , dinitrogen tetraoxide claim 26 , or nitric oxide.30. The system of claim 26 , further comprising a gas source of nitric oxide.31. The system of claim 26 , wherein the receptacle includes the NOscavenger.32. The system of claim 26 , further comprising a humidified line.33. The system of claim 32 , wherein the humidified line is heated.34. The system of claim 32 , wherein the humidified line is heated to about 35° C. This application claims the benefit of prior U.S. Provisional Application No. 61/024,178, filed on Jan. 28, 2008, which is ...

PATIENT CASSETTE WITH VARIABLE PATIENT CIRCUIT VOLUME

A flexible patient cassette that can be optimized for different types of breathing circuits, different drive circuits and different patient categories has a first inlet arranged to be connected to a drive circuit, and at least a second inlet arranged to be connected to a patient connector, the first and second inlets being pneumatically connected with each other through a gas conducting passage constituting a patient circuit having a certain volume. The patient cassette has a volume-varying arrangement for varying the patient circuit volume to allow that volume to be varied in dependence of at least one of the type of breathing circuit in which the patient cassette is used, the type of drive circuit to which the patient cassette is connected, and the tidal volume of a patient connected to the patient connector. 1. An anesthesia apparatus comprising:a drive circuit and a gas conducting passage pneumatically connecting said drive circuit with a patient;said gas conducting passage comprising a volume operating as a volume reflector in which a majority exhalation gases exhaled by the patient are collected during an exhalation phase;said drive circuit being arranged to deliver a flow of drive gas to said volume during an inhalation phase, said drive gas not being inhaled by the patient but pushing the exhalation gases out of said volume and back to the patient to allow rebreathing of said exhalation gases; andsaid volume comprising an anesthetic adsorbing material so as to simultaneously serve as a volume reflector and an anesthetic adsorption/desorption reflector.2. The anesthesia apparatus according to claim 1 , wherein said volume reflector comprises a gas container comprising said anesthetic adsorbing material.3. The anesthesia apparatus according to claim 2 , wherein said gas container is connected in-line with a common line of a patient circuit of the breathing apparatus.4. The anesthesia apparatus according to claim 2 , wherein said gas container is detachably ...

LOW RESISTANCE AEROSOL EXHALATION FILTER

Low resistance aerosol exhalation filters, and methods of their use are provided. The exhalation filters provided herein are used in conjunction with a nebulizer in the treatment of a pulmonary infection in a patient in need thereof. In one method, an antiinfective formulation is administered to a patient in need of treatment of a pulmonary infection, with a nebulizer comprising a low resistance aerosol exhalation filter of the invention. The pulmonary infection, in one embodiment, is a Pseudomonas or mycobacterial (e.g., NTM) infection. 1. A low resistance aerosol exhalation filter comprising , means for controlling air flow upon patient exhalation.2. The low resistance aerosol exhalation filter of claim 1 , wherein the means for controlling air flow comprises a one-way valve.3. The low resistance aerosol exhalation filter of or claim 1 , wherein the filter is comprised of cloth claim 1 , plastic claim 1 , fiber claim 1 , paper claim 1 , or a combination thereof.43. A nebulizer comprising the low resistance aerosol exhalation filter of any one of -.5. The nebulizer of claim 4 , wherein the nebulizer is single use and disposable.6. A method for treating a pulmonary infection in a patient in need thereof claim 4 , comprising claim 4 , administering a nebulized drug formulation to the patient in need of treatment with the nebulizer of or .7. The method of claim 6 , wherein the drug formulation comprises an aminoglycoside.8. The method of claim 7 , wherein the aminoglycoside is amikacin claim 7 , apramycin claim 7 , arbekacin claim 7 , astromicin claim 7 , capreomycin claim 7 , dibekacin claim 7 , framycetin claim 7 , gentamicin claim 7 , hygromycin B claim 7 , isepamicin claim 7 , kanamycin claim 7 , neomycin claim 7 , netilmicin claim 7 , netilmicin claim 7 , paromomycin claim 7 , rhodestreptomycin claim 7 , ribostamycin claim 7 , sisomicin claim 7 , spectinomycin claim 7 , streptomycin claim 7 , tobramycin or verdamicin.9. The method of claim 7 , wherein the ...

SIMULTANEOUS POSTIVE AND NEGATIVE AIRWAY PRESSURE PUMP

A system and method of using both positive and negative airflow to create differential pressures in the oral and nasal cavities for support of the pharynx to treat obstructive sleep apnea. 1. A method of treating obstructive sleep apnea comprising:(a) providing a pump configured to deliver both pressurized air and vacuum;(b) using said pump to deliver pressurized air to a nasal cavity of a patient; and(c) using said pump to concurrently remove air from an oral cavity of said patient.2. The method of wherein said pump is mounted on a mask which is adapted to distribute weight to bony structures of a patient's face.3. The method of wherein said pump is configured to deliver pressurized air to said nasal cavity of said patient through a tube inserted into said patient's nostril.4. The method of wherein said pump is configured to remove said air from said oral cavity of said patient through a tube inserted into said patient's mouth.5. The method of wherein said tube is interconnected with a structure comprised of a flexible polymeric material claim 4 , said structure configured to fit between said patient's lips and labial surface of at least one said patient's incisor claim 4 , said structure further configured to substantially inhibit the passage of air into said patient's mouth.6. The method of wherein said pump comprises a diaphragm located within a chamber claim 1 , further wherein said diaphragm is alternatively compressed and relaxed during operation.7. The method of wherein said pump comprises a resilient air bladder adapted to be placed in contact with said patient's chest during use claim 1 , said bladder further adapted to expel air when said patient inhales and take in air when said patient exhales.8. The method of wherein said tube is bifurcated into two branches claim 4 , and each said branch is placed along each alveolar ridge within said oral cavity of said patient. This application claims priority to U.S. Provisional Patent Application No. 61/958,237 ...

ADJUSTABLY CONTROLLING RESCUE OR ASSISTED BREATHS

Described are overinflation and/or overventilation devices. The devices can include a body configured to attach to a resuscitation interface and a gas source, a subject metric input component disposed at the body, the subject metric input component configured to receive input specifying a metric associated with a resuscitation subject; and a volume control mechanism disposed within the body, the volume control mechanism configured to control a volume of gas provided by the gas source during a manual resuscitation that is communicated to the resuscitation interface based on the metric provided by the subject metric input component. Methods of using these devices are also included. 1. An overinflation and/or overventilation device , the device comprising:a body configured to attach to a resuscitation interface and a gas source:a subject metric input component disposed at the body, the subject metric input component configured to receive input specifying a metric associated with a resuscitation subject; anda volume control mechanism disposed within the body, the volume control mechanism configured to control a volume of gas provided by the gas source during a manual resuscitation that is communicated to the resuscitation interface based on the metric provided by the subject metric input component.2. The device of claim 1 , wherein the resuscitation interface includes a mask or an advanced airway.3. The device of claim 1 , wherein the resuscitation gas source includes one or both of a resuscitation bag or an oxygen (O) source.4. The device of claim 1 , wherein the body includes an inlet port and an outlet port claim 1 , wherein one or both of the inlet port and the outlet port comply with a standard for manual resuscitator parts such that the device is insertable into existing standard resuscitation equipment.5. The device of claim 1 , wherein the metric associated with the subject includes one or more of a weight claim 1 , a range of weights claim 1 , a height claim 1 ...

Gas washout vent for patient interface

A gas-washout vent includes a housing with a first wall with one or more passages through the wall configured to provide fluid communication with a portion of the patient interface system exposed to a therapy pressure. The passages include respective first openings on a first surface of the first wall. The housing at least partially defines a second opening in communication with ambient atmosphere. A diffusing material is located at least partially within the housing to be adjacent the first surface. A surface of the diffusing material facing the first surface is spaced away from the first surface by a gap that extends to provide a fluid communication between all of the first openings and between all of the first openings and the second opening. The housing is configured so that air is prevented from flowing out of the housing at all areas directly opposite each of the first openings.

Vent arrangement for respiratory mask

A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area, such as one defined by gears, radial exhaust revolvers and/or flow diverters for a conduit having a variable gas passage channel. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid, motor or voice coil, manipulates the vent assembly. The actuator may be configured for control by a processor to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection and/or leak detection. 1. An apparatus for automated control of gas washout of a patient interface of a respiratory treatment apparatus comprising:a vent assembly having a variable exhaust area, the vent assembly being associated with a patient interface to vent expiratory gas, the vent assembly including a first gear having a first flow bore; andan actuator to manipulate orientation of the flow bore of the first gear to vary the exhaust area.2. The apparatus of further comprising a second gear claim 1 , the second gear including a second flow bore claim 1 , the first and second gears adapted in a meshed configuration.3. The apparatus of wherein a rotation of the first and second gears closes of the first and second flow bores to prevent a transfer of gas through a conduit of the vent assembly.4. The apparatus of wherein a rotation of the first and second gears opens the first and second flow bores to permit a transfer of gas through a conduit of the vent assembly.5. The apparatus of wherein the first gear comprises a set of teeth surrounding a periphery of the first gear.6. The apparatus of further comprising a controller including a processor claim 1 , the controller coupled with the actuator claim 1 , the controller configured to operate the ...

PORTABLE REBREATHING SYSTEM WITH PRESSURIZED OXYGEN ENRICHMENT

This invention relates to a portable rebreathing system, said portable rebreathing system comprising a breathing mask (), a carbon dioxide scrubber (), a counter lung (), ambient air ports and an oxygen supply port (), with the breathing mask () connectable with a mask connector to a common valve housing (X) containing said carbon dioxide scrubber (), ambient air port and oxygen supply port, and with the counter lung () connectable with a counter lung connector to the common housing. 1. A portable rebreathing system for enriched oxygen breathing , closed rebreathing at nominal oxygen concentration as well as adjustable oxygen enrichment of breathing ambient air , said portable rebreathing system comprising{'b': '4', 'a breathing mask (),'}{'b': 4', '4, 'i': 'c', 'a common valve housing (X) connected with a mask connector () to the breathing mask ();'}{'b': 3', '31', '3, 'i': 'a', 'a carbon dioxide scrubber (/) connected with a scrubber connector () to the common valve housing (X);'}{'b': 2', '2', '3', '31, 'i': 'a', 'a counter lung () connected with a counter lung connector () to the carbon dioxide scrubber (/);'}{'b': 5', '7, 'an oxygen supply port () and at least one ambient air port () arranged in the common valve housing;'}{'sub': '2', 'b': 5', '51, 'a pressurized oxygen source (O) connected to the oxygen supply port () via a hose (); characterized in that'}{'b': 4', '3', '31', '6', '2', '6, 'i': c', 'u', 'i, 'the mask connector () connects to a primary chamber in the common valve housing (X) with a total dead volume of less than 10 centiliters, said primary chamber in turn connected to a first exhale passage containing said carbon dioxide scrubber (/) via a first one way check valve () and a second inhale passage containing said counter lung () via a second one way check valve ();'}{'b': 6', '7, 'i': a', 'a, 'an ambient control valve () in the common valve housing (X) connected to a first ambient air port (), regulating flow to and from the first ambient air ...

POSITIONING DEVICE AND METHOD FOR USE WITH A PATIENT UNDER ANESTHESIA

An apparatus for supporting the head and neck for airway management and to facilitate the maintenance of a patent airway under anesthesia, for unconscious patients, and for any circumstance requiring a patent airway while the patient is lying on her side. The apparatus includes a head supporting surface, an adjustable neck supporting surface, and two adjustable jaw support arms to protrude the jaw forward and maintain ventilation while the patient is lying on either of his/her sides. 1: A nasal mask which can be used separately , or with an oral mask releasibly attached to the nasal mask through a closable opening on the nasal mask.2: The nasal mask as claimed in claim 1 , wherein when the oral mask is engaged with the nasal mask claim 1 , the closable opening allows gases to flow bilaterally between the oral mask and the nasal mask.3: The nasal mask as claimed in claim 1 , wherein when the oral mask is combined with and engaged with the nasal mask claim 1 , the combination creates a face mask which can be used for bag-mask ventilation claim 1 , general anesthesia claim 1 , deep sedation or respiratory treatment.4: The nasal mask as claimed in claim 1 , wherein when nasal mask is used by itself claim 1 , the closable opening automatically closes whereupon the nasal mask may be used for nasal Bipap/CPAP claim 1 , ventilation during intubation claim 1 , general anesthesia claim 1 , deep sedation claim 1 , respiratory treatment claim 1 , delivery of oxygen claim 1 , or treatment of obstructed sleep apnea.5: The nasal mask of claim 1 , wherein the closable opening comprises a door claim 1 , and the oral mask includes a connector which when engaged with the nasal mask door claim 1 , pushes the door open.6: A nasal mask claim 1 , or combined nasal mask/oral mask full face mask claim 1 , comprising:a nasal mask body adapted for connection with a supply of breathable gas, preferably oxygen, air, or air anesthetic gas;a cushion secured to said nasal mask body, the body and ...

SINGLE-PIECE AEROSOL EXHALATION FILTER AND AN AEROSOL DELIVERY DEVICE INCLUDING THE SAME

An aerosol delivery device for delivering an aerosol to a patient includes a nebulizer configured to generate an aerosol containing droplets of a liquid medicament, an inhalation conduit defining an inhalation passage, an exhalation conduit defining an exhalation passage, and a single-piece filter connected to the exhalation conduit configured to capture at least some of the droplets of the liquid medicament from a gaseous or fluid medium. The single-piece filter includes a continuous, single-piece filter body having a proximal portion and a distal portion, wherein the proximal portion of the filter body has a proximal end that defines an opening configured to connect to the exhalation conduit and the distal portion of the filter body has a closed distal end. 1. An aerosol delivery device for delivering an aerosol to a patient , the aerosol delivery device comprising:a nebulizer configured to generate an aerosol containing droplets of a liquid medicament;an inhalation conduit defining an inhalation passage, the inhalation passage configured to allow passage of the aerosol generated by the nebulizer to the patient;an exhalation conduit defining an exhalation passage, the exhalation passage configured to allow passage of a gaseous or fluid medium exhaled from the patient, the gaseous or fluid medium comprising droplets of the liquid medicament; and the single-piece filter comprises a continuous, single-piece filter body having a proximal portion and a distal portion,', 'the proximal portion of the filter body has a proximal end that defines an opening configured to connect to the exhalation conduit, and', 'the distal portion of the filter body has a closed distal end., 'a single-piece filter connected to the exhalation conduit, the single-piece filter configured to capture at least some of the droplets of the liquid medicament from the gaseous or fluid medium, wherein2. The aerosol delivery device of claim 1 , wherein the single-piece filter has a generally tubular ...

Systems and Methods for Ambulatory Generation of Nitric Oxide

Systems and methods are provided for portable and compact nitric oxide (NO) generation that can be embedded into other therapeutic devices or used alone. In some embodiments, an ambulatory NO generation system can be comprised of a controller and disposable cartridge. The cartridge can contain filters and scavengers for preparing the gas used for NO generation and for scrubbing output gases prior to patient inhalation. The system can utilize an oxygen concentrator to increase nitric oxide production and compliment oxygen generator activity as an independent device. The system can also include a high voltage electrode assembly that is easily assembled and installed. Various nitric oxide delivery methods are provided, including the use of a nasal cannula. 126-. (canceled)27. A nitric oxide (NO) system , comprising:a NO source configured to provide a product gas containing nitric oxide; anda controller configured to regulate the amount of NO provided from the NO source using one or more parameters as an input to the controller, the controller being configured to communicate with one or more sensors for detecting timing of an inspiratory event such that the controller is configured to determine timing of a delivery of a pulse of NO delivered to a patient.28. The NO system of claim 27 , wherein the one or more parameters includes information from at least one sensor configured to collect information relating to at least one of the NO source claim 27 , the product gas claim 27 , and a medical gas into which the product gas flows.29. The NO system of claim 27 , wherein the controller is configured to vary one or more of pulse parameters including flow rate claim 27 , duration claim 27 , NO concentration and timing with respect to the inspiratory event.30. The NO system of claim 27 , wherein a duration of the pulse of NO is between tens of milliseconds to an entire duration of the inspiratory event.31. The NO system of claim 27 , wherein the parameters relate to one or more ...

SMALL ANIMAL IMAGING DEVICE

An anesthesia mask configured to be worn on an animal's head. The mask includes a contoured surface that substantially follows the contours of a portion of the animal's head and defines a cavity that at least partially receives the head. One or more outlets in communication with the nose and/or the mouth are formed in the contoured surface. The mask includes a first opening configured to receive anesthesia and at least one channel that conducts the anesthesia from the first opening to the outlet(s). The mask may include an airflow collection system that includes inlet(s) formed in the contoured surface, a second opening connectable to a vacuum device, and passageway(s) configured to conduct an unused portion of the anesthesia from the inlet(s) to the second opening. The mask may include a body portion and a removable bite bar component that include first and second portions, respectively, of the contoured surface. 1. An anesthesia mask configured to be worn on an animal's head that comprises a nose and a mouth with at least one tooth , the anesthesia mask being configured to provide anesthesia to at least one of the nose and the mouth , the anesthesia mask comprising:a contoured surface defining a cavity configured to at least partially receive the animal's head, the contoured surface substantially following contours of a portion of the animal's head that comprises the nose and the mouth;a bite member extending into the cavity, the bite member being configured to hook onto the at least one tooth;at least one outlet formed in the contoured surface, the at least one outlet being in communication with at least one of the nose and the mouth;a first opening configured to receive the anesthesia; andat least one channel extending between the first opening and the at least one outlet, the at least one channel conducting the anesthesia from the first opening to the at least one outlet.2. The anesthesia mask of claim 1 , wherein the anesthesia mask extends along a ...

CONNECTOR FOR RESPIRATORY DUCTS

The invention concerns a connector for connecting respiratory ducts together such that they are placed in fluid communication. The connector comprises a first conduit having a female connector end and a second conduit having a male connector end adapted to be received within the female connector end of the first conduit such that the male and female connector ends form a common conduit having an inner surface formed at least in part by the male connector end. The male connector has a retaining formation which is adapted to abut a corresponding formation of the female connector so as to resist separation of the first and second conduits whilst permitting relative rotation there-between when connected. The inner surface of the male connector may comprise a gas washed surface in use. The engagement formation is preferably a recessed area of the female connector, which may be generally annular in shape. In one embodiment, the member(s) may comprise a valve seat. The invention also concerns a breathing circuit comprising the connector. 1. A connector for connecting respiratory ducts together such that they are placed in fluid communication , the connector comprising:a first conduit having a female connector end; anda second conduit having a male connector end adapted to be received within the female connector end of the first conduit such that the male and female connector ends overlap to provide a common conduit having an inner surface formed at least in part by the male connector end,wherein the male connector end has a retaining formation which is adapted to abut a corresponding engagement formation on the overlapping portion of the female connector end so as to resist separation of the first and second conduits whilst permitting relative rotation thereof when connected.2. A connector according to claim 1 , wherein the overlapping portion of the male or female connector end comprises one or more depression extending in a direction substantially parallel with an axis ...

ANESTHETIC CIRCUIT HAVING A HOLLOW FIBER MEMBRANE

An anesthetic circuit is provided for treating a patient. The anesthetic circuit includes a membrane having a plurality of hollow fibers. Also provided is a fluid separation apparatus connectable to an anesthetic circuit. In a further embodiment, a method is provided for anesthetic treatment of a patient. 1. An anesthetic circuit for treating a patient , comprising:a flow passage;an anesthetic agent inlet in fluid communication with the flow passage for introducing an external anesthetic agent into the flow passage;at least one fluid port in fluid communication with the flow passage for providing at least the external anesthetic agent to the patient, whereinthe at least one fluid port receives an exhaled fluid mixture from the patient, the exhaled fluid mixture comprising an exhaled oxygen, an exhaled carbon dioxide and an exhaled anesthetic agent, the flow passage being in fluid communication with the at least one fluid port for receiving the exhaled fluid mixture from the at least one fluid port; the membrane is pervious to the exhaled carbon dioxide such that the membrane has an exhaled carbon dioxide-to-exhaled anesthetic agent selectivity of greater than 1,', 'the exhaled fluid mixture contacts the membrane wherein the membrane separates a portion of the exhaled carbon dioxide from the exhaled fluid mixture to leave a modified fluid mixture in the flow passage having a lower amount of the exhaled carbon dioxide than the exhaled fluid mixture, and', 'the at least one fluid port is configured to receive the modified fluid mixture from the membrane and provide at least the modified fluid mixture to the patient; and, 'a membrane comprising a plurality of hollow fibers, the membrane being in fluid communication with the flow passage, configured to receive the exhaled fluid mixture from the at least one fluid port, and at least partially impervious to the exhaled anesthetic agent to at least partially retain the exhaled anesthetic agent in the flow passage after the ...

Method and Anaesthetic Breathing Apparatus

A method for maintaining ventilation during an oxygen flush in an anaesthetic breathing apparatus (2) is disclosed. The breathing apparatus (2) comprises a breathing circuit (3), a fresh gas section (5), and a ventilator section (7). The fresh gas section (5) comprises an oxygen supply (12), and the ventilator section (7) comprises an expiratory pressure control valve (21). The method (100) comprises steps of: starting a continuous flow of oxygen from the oxygen supply (12) into the breathing circuit (3) interrupting an ongoing ventilation in order to activate the oxygen flush; maintaining the continuous flow of oxygen; and cycling the expiratory pressure control valve (21) between an upper pressure level setting to provide an inspiratory phase of a breathing cycle and a lower pressure level setting to provide an expiratory phase of the breathing cycle.

METHODS, SYSTEMS AND DEVICES FOR NON-INVASIVE OPEN VENTILATION WITH GAS DELIVERY NOZZLES WITH AN OUTER TUBE

A non-invasive ventilation system may include at least one outer tube with a proximal lateral end of the outer tube adapted to extend to a side of a nose. The at least one outer tube may also include a throat section. At least one coupler may be located at a distal section of the outer tube for impinging at least one nostril and positioning the at least one outer tube relative to the at least one nostril. At least one jet nozzle may be positioned within the outer tube at the proximal lateral end and in fluid communication with a pressurized gas supply. At least one opening in the distal section may be adapted to be in fluid communication with the nostril. At least one aperture in the at least one outer tube may be in fluid communication with ambient air. The at least one aperture may be in proximity to the at least one jet nozzle. 132-. (canceled)33. A method of providing respiratory support , the method comprising:providing a non-invasive ventilation system comprising:a ventilator;a gas delivery circuit;a gas delivery tube;at least one gas delivery path through the gas delivery tube;at least one aperture between the gas delivery path and ambient air, wherein the at least one aperture is at a proximal lateral end of the at least one gas delivery path;at least one jet nozzle within the gas delivery path proximate to the at least one aperture;at least one sensor; andat least one nasal cushion at a distal end of the gas delivery tube for impinging a nostril;measuring spontaneous respiration with the at least one sensor; andactivating the ventilator to supply ventilation gas in synchrony with phases of breathing through the gas delivery circuit and to the at least one jet nozzle such that the ventilation gas entrains ambient air.34. The method of claim 33 , wherein the ventilation gas and entrained ambient air elevates lung pressure claim 33 , elevates lung volume claim 33 , decreases work of breathing or increases airway pressure.35. The method of claim 33 , wherein ...

NECK STRAP, CROWN STRAP ASSEMBLY AND HEADGEAR FOR A BREATHING MASK

The present technology relates to a neck strap, a crown strap assembly and a headgear for a breathing mask. The neck strap comprises first and second lower connection portions adapted to connect to first and second lower mask connection straps, and first and second upper connection portions adapted to connect to a first and second lateral crown straps. 1. Neck strap for a headgear , comprising:a one-piece main body adapted to engage a patient's neck, the main body including:first and second lower connection portions adapted to connect to respective first and second lower mask connection straps, andfirst and second upper connection portions adapted to connect to respective first and second lateral crown straps.2. Neck strap according to claim 1 , wherein the neck strap is substantially flat.3. Neck strap according to claim 1 , wherein the main body comprises two opposing major side edges.4. Neck strap according to claim 3 , wherein the at least one of the opposing major side edges comprises a curved portion.5. Neck strap according to claim 4 , wherein the curved portion is concave.6. Neck strap according to claim 4 , wherein the two opposing major side edges include a curved portion and wherein the neck strap has at least partially a reduced width between the two opposing major side edges in the curved portion.7. Neck strap according to claim 3 , wherein the main body comprises two opposing minor side edges claim 3 , wherein the opposing major side edges interconnect the opposing minor side edges.8. Neck strap according to claim 7 , wherein the first lower connection portion and/or the first upper connection portion is/are located at a first of the two opposing minor side edges claim 7 , and/or wherein the second lower connection portion and/or the second upper connection portion is/are located at a second of the two opposing minor side edges.9. Neck strap according to claim 8 , wherein the first and/or second lower connection portion extends substantially parallel ...

Device for the treatment of, treatment of complications arising from, and/or prevention of respiratory disorders caused by bacterial, viral, protozoal, fungal and/or microbial infections, preferably for the treatment of complications arising from cystic fibrosis

The present invention pertains to a device () for the treatment of, treatment of complications arising from, and/or preventing respiratory disorders caused by bacterial, viral, protozoal, fungal and/or microbial infections, preferably for the treatment of complications arising from cystic fibrosis (CF), including a positive airway pressure device () for providing a breathing gas under a positive pressure to a patient interface (), a source of nitric oxide () for providing gaseous nitric oxide, a gas injector () for injecting nitric oxide provided by the source of nitric oxide () into the breathing gas provided by the positive airway pressure device () under pressure, a flow rate sensor () for sensing the flow rate of the breathing gas provided to the patient interface () under positive airway pressure, and a controller () programmed for controlling the gas injector () for injecting the nitric oxide into the breathing gas provided by the positive airway pressure device () when a flow rate detected by the flow rate sensor () exceeds a predetermined threshold flow rate. 1. Use of gaseous nitric oxide for the production of an inhalable medicament for the treatment of , treatment of complications arising from , and/or prevention of respiratory disorders caused by bacterial , viral , protozoal , fungal and/or microbial infections in a mammal under positive airway pressure.2. Use according to claim 1 , characterized in that nitric oxide is present in the inhalable medicament with a concentration of between 40 ppm and 1000 ppm claim 1 , preferably between 80 ppm and 220 ppm or between 140 ppm and 220 ppm.3. Use according to or claim 1 , characterized in that said treatment of claim 1 , treatment of complications arising from claim 1 , and/or prevention of respiratory disorders is carried out in the group consisting of: a ventilator associated pneumonia (VAP) claim 1 , a toxoplasmosis claim 1 , a heparin-protamine reaction claim 1 , a traumatic injury claim 1 , a traumatic ...

VENTILATOR ASSEMBLY AND MIXING SYSTEM THEREFOR

A gas mixing system that includes first and second flow assemblies and an exhaust gas outlet. Each of the first and second flow assemblies include a plurality of on/off valves with different flow rate values and a proportional valve. The first flow assembly is configured to have a first gas flowed therethrough and the second flow assembly is configured to have a second gas flowed therethrough. The output of the first flow assembly is combined with the output of the second flow assembly and the mixed gases exit through the exhaust gas outlet. The gas mixing system can be used in a ventilator assembly. 1. A gas mixing system comprising:a first flow assembly that includes an inlet for receiving a first gas, a regulator, a plurality of on/off valves connected in series and a proportional valve, wherein each on/off valve includes a different on/off flow rate value and is selectively openable to allow the first gas to flow therethrough, wherein a first gas on/off flow path is defined from the inlet, through the regulator, through at least one of the on/off valves and to a first gas on/off outlet, wherein a first gas proportional flow path is defined from the inlet, through the regulator, through the proportional valve and to a first gas proportional outlet, wherein the first gas on/off flow path and first gas proportional flow path combine to create a first gas output path,a second flow assembly that includes an inlet for receiving a second gas, a regulator, a plurality of on/off valves connected in series and a proportional valve, wherein each on/off valve includes a different on/off flow rate value and is selectively openable to allow the second gas to flow therethrough, wherein a second gas on/off flow path is defined from the inlet, through the regulator, through at least one of the on/off valves and to a second gas on/off outlet, wherein a second gas proportional flow path is defined from the inlet, through the regulator, through the proportional valve and to a ...

Portable Sedation Apparatus and Related Method

Various embodiments of the invention may provide a breathing and/or anesthetic unit that is portable, compact, inexpensive, and convenient, and which may expedite medical procedures by allowing a health care provider to quickly sedate a patient. Such a unit may be ideal for minor medical procedures needing mild or moderate analgesia/sedation (e.g., <30 minutes) in various fields. Such a unit may include (i) a handheld gas supply container including a therapeutic amount of anesthetic gas; (ii) a mask; (iii) a single-use, uninterruptable flow coupler to couple the mask to the supply container; and (iv) a handheld, self-contained, recovery gas container, including a negative pressure, coupled to the mask. 1. A mobile sedation system comprising:a first gas container including anesthetic gas;a second gas container including oxygen;a self-contained, scavenging third gas container, including a negative pressure, to couple to a mask; anda fourth container that includes the first, second, and third gas containers;wherein the mobile system is configured to (i) deliver the oxygen and the anesthetic gas to a patient; and (ii) scavenge waste gas from the patient by recovering, via the negative pressure, the waste gas into the third gas container.2. The system of claim 1 , wherein the third gas container is configured to (i) couple to a vacuum source to pre-charge the third gas container with the negative pressure and (ii) decouple from the vacuum source before coupling the third gas container to the patient.3. The system of including a set of anesthetic gas containers claim 1 , the set including the first gas container and additional gas containers; wherein each of the first and additional gas containers include different amounts of gases.4. The system of claim 1 , wherein the first claim 1 , second claim 1 , and third gas containers are included in a separate unit that couples to the mask.5. The system of claim 1 , wherein the first gas container includes at least a 15 minute ...

VACUUM SHIELD ASSEMBLY FOR ATTACHMENT TO MEDICAL MASKS

A vacuum shield assembly intended for attachment to an existing medical mask for air suction, nebulization, BIPAP, and/or CPAP. The vacuum shield assembly generally comprises a shield body and a retaining assembly. The retaining assembly may attach the vacuum shield assembly to a vacuum tube of the existing mask, which may be connected to a negative pressure vacuum. The retaining assembly may also be attached to a nebulizer unit or component thereof, or to an oxygen supply tube of a BIPAP or CPAP mask. The shield body may comprise a lower segment, which may comprise a connecting component configured and dimensioned for attachment to, and for a fluid communication, with the retaining assembly. The shield body may be configured and dimensioned to correspond to the geometry of the existing mask. As an example, the shield body may comprise a substantially concave configuration with a substantially semi-ovoidal edge. 1. A vacuum shield assembly disposable onto a patient wearing a medical mask and configured to remove exhaled air from the patient , said vacuum shield assembly comprising:a shield body comprising a lower segment disposed below a lower perimeter of said shield body, said lower segment comprising a first opening,said shield body comprising an upper segment disposed above said lower segment, said upper segment comprising a top surface, a bottom surface and a second opening,a retaining assembly structured to retain a vacuum tube and a component of the medical mask,said lower segment configured for attachment to the vacuum tube and configured to exert a negative pressure on an inside of said shield body, andsaid shield body and said retaining assembly collectively disposable into and out of an operative position and an inoperative position.2. The vacuum shield assembly as recited in wherein said upper segment comprises a concave configuration.3. The vacuum shield assembly as recited in wherein said concave configuration of said shield body is dimensioned and ...

Intubation assembly to protect from airborne illnesses

An intubation assembly and shield configured to at least partially reduce the risk of contagion of airborne illnesses. The intubation assembly comprises an intubation apparatus assembly, which may comprise an intubation apparatus such as a laryngoscope, endoscope, bronchoscope, or other fiberoptic device. The intubation apparatus assembly may be operatively disposed on the shield assembly. The intubation apparatus may be placed on a correspondingly dimensioned sleeve. The shield assembly comprises a body with a plurality of side segments and a first transparent component with a shield opening disposed thereon. The shield opening may be used for insertion of the intubation apparatus assembly. The shield assembly may also comprise a second transparent component with at least one longitudinally disposed slot for insertion of an endotracheal tube or other intubation apparatus(es). The shield assembly may be provided with ports to attach a vacuum device to provide negative pressure.

NECK STRAP, CROWN STRAP ASSEMBLY AND HEADGEAR FOR A BREATHING MASK

A neck strap, a crown strap assembly and a headgear for a breathing mask. The neck strap for a headgear includes a one-piece main body adapted to engage a patient's neck, first and second lower connection portions adapted to connect to first and second lower mask connection straps, and first and second upper connection portions adapted to connect to respective first and second lateral crown straps. 1. Neck strap for a headgear , comprising:a one-piece main body adapted to engage a patient's neck, the main body including:first and second lower connection portions adapted to connect to respective first and second lower mask connection straps, andfirst and second upper connection portions adapted to connect to respective first and second lateral crown straps.2. Neck strap according to claim 1 , wherein the neck strap is substantially flat.3. Neck strap according to claim 1 , wherein the main body comprises two opposing major side edges.4. Neck strap according to claim 3 , wherein the at least one of the opposing major side edges comprises a curved portion.5. Neck strap according to claim 4 , wherein the curved portion is concave.6. Neck strap according to claim 4 , wherein the two opposing major side edges include a curved portion and wherein the neck strap has at least partially a reduced width between the two opposing major side edges in the curved portion.7. Neck strap according to claim 3 , wherein the main body comprises two opposing minor side edges claim 3 , wherein the opposing major side edges interconnect the opposing minor side edges.8. Neck strap according to claim 7 , wherein the first lower connection portion and/or the first upper connection portion is/are located at a first of the two opposing minor side edges claim 7 , and/or wherein the second lower connection portion and/or the second upper connection portion is/are located at a second of the two opposing minor side edges.9. Neck strap according to claim 8 , wherein the first and/or second lower ...

BREATHING TUBE

Condensation or “rain-out” is a problem in breathing circuits and especially neonatal breathing circuits. The subject patent provides an improved breathing tube component for managing rain-out particularly in neonatal applications. In particular the breathing tube has a smooth inner bore, and an outer insulating layer containing stagnant gas and a heater wire. 147-. (canceled)48. A breathing tube comprising:an inner tube defining a breathing gases passage,an outer tube surrounding the inner tube, andone or more heater wires, wherein the heater wires are helically wound around the inner tube, wherein the one or more heater wires have a varying pitch along a length of the breathing tube providing varying heating density along a length of the breathing tube.49. The breathing tube of claim 48 , wherein the one or more heater wires extend along almost an entirety of the length of the breathing tube.50. The breathing tube of claim 48 , wherein each of the one or more heater wires are in contact with the inner tube.51. The breathing tube of claim 50 , wherein each of the one or more heater wires are in contact with the inner tube at a plurality of locations.52. The breathing tube of claim 51 , wherein the inner tube comprises an outer surface and at least one of the one or more heater wires is on the outer surface of the inner tube.53. The breathing tube of claim 48 , wherein the one or more heater wires form and maintain a profile of heating density in the breathing tube to reduce rainout in the breathing tube.54. The breathing tube of claim 48 , wherein the varying pitch of the one or more heater wires controls an amount of heating in different regions of the breathing tube.55. The breathing tube of claim 48 , wherein the one or more heater wires have a decreased pitch at an end of the breathing tube configured to attach to an outlet of a humidifier chamber of a respiratory therapy device.56. The breathing tube of claim 48 , wherein the inner tube comprises a wall and at ...

APPARATUS, SYSTEMS AND METHOD FOR COLLECTING AND RECLAIMING ANAESTHETIC AGENTS AND FOR REMOVING NITROUS OXIDE FROM EXHAUST GASES

A system for collecting an anaesthetic agent, having at least one anaesthetic gas scavenging system (AGSS) for receiving exhaust gas from a plurality of sources, the exhaust gas including the anaesthetic agent to be collected, each AGSS comprising at least one power source for providing suction of the exhaust gas from the plurality of sources under negative pressure, and a central collection system for receiving the exhaust gas, the central collection system comprising at least one collector for collecting the anaesthetic agent from the exhaust gas, wherein the at least one collector is configured to adsorb the anaesthetic agent from the exhaust gas. The central collection system may be configured to received the exhaust gases from the at least one AGSS, with the central collection system being located downstream of the at least one AGSS. 1. A system for collecting an anaesthetic agent , the system comprising:at least one anaesthetic gas scavenging system (AGSS) for receiving exhaust gas from a plurality of sources, the exhaust gas including the anaesthetic agent to be collected, each AGSS comprising at least one power source for providing suction of the exhaust gas from the plurality of sources under negative pressure; anda central collection system for receiving the exhaust gas, the central collection system comprising at least one collector for collecting the anaesthetic agent from the exhaust gas, wherein the at least one collector is configured to adsorb the anaesthetic agent from the exhaust gas.2. The system of claim 1 , wherein the at least one power source outputs the exhaust gas under positive pressure such that the collector collects the anaesthetic agent under positive pressure.3. The system of claim 1 , wherein the at least one power source comprises at least one vacuum pump.4. The system of claim 1 , wherein the at least one power source comprises a plurality of power sources.5. The system of claim 4 , wherein the plurality of power sources comprises ...

DEVICE FOR EVACUATING AND/OR MONITORING GAS LEAKING FROM A PATIENT DURING SURGERY OR ANESTHETIZATION

A system is described herein for evacuating gas as it is leaking from a patient's airway. The system comprises a gas evacuation flowpath configured for collecting a gas flow escaping from the patient when inserted into the patient's airway. A vacuum source is connected to the gas evacuation flowpath. Devices that may be employed as part of the system and a method for evacuating gas from a patient are also described. 1. A system for evacuating gas as it is leaking from a patient's airway , the system comprising:a gas evacuation flowpath configured for collecting a gas flow escaping from the patient when inserted into the patient's airway; anda vacuum source connected to the gas evacuation flowpath.2. The system of claim 1 , further comprising at least one sensor for determining a concentration of a measured gas in the gas flow.3. The system of claim 2 , wherein the at least one sensor is fluidly connected to the gas evacuation flowpath claim 2 , the at least one sensor being capable of real time claim 2 , continuous monitoring of a gas in the gas flow that is collected from the patient.4. The system of claim 3 , further comprising:a gas monitoring device in communication with the at least one sensor, the gas monitoring device including a component chosen from a data logger, alarm system or monitoring screen;a vacuum pressure valve capable of providing a vacuum to the gas evacuation plug when it is placed inside the patient's airway; anda connection from the vacuum pressure valve to the vacuum source.5. The system of claim 2 , wherein the at least one sensor is configured to monitor at least one of oxygen concentration claim 2 , anesthesia concentration claim 2 , COconcentration or pH.6. The system of claim 1 , wherein the gas evacuation flowpath comprises a gas evacuation plug attached to a patient airway tube claim 1 , the plug being configured to expand to fill the patient's mouth cavity to provide a seal.7. The system of claim 1 , further comprising a second ...

BREATHING APPARATUS, METHOD OF CONTROLLING A BREATHING APPARATUS, COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCT

A breathing apparatus includes a control unit configured to control operation of the breathing apparatus based on at least a first input value and a second input value. The breathing apparatus also includes a graphical user interface connected to the control unit. The control unit is configured to display a visual output on the graphical user interface including an area defined by a first axis and a second axis. In addition, the breathing apparatus includes an input unit configured to provide selection of a portion of the area. The control unit is configured to set the first input value in response to the position of the selected portion relative the first axis and to set the second input value in response to the position of the selected portion relative the second axis. 128-. (canceled)29. A breathing apparatus , comprising:a breathing circuit provided with a patient interface, the breathing circuit being configured to provide an inspiratory patient gas mixture to the patient interface;a control unit configured to control operation of the breathing apparatus based on at least a first input value and a second input value;a graphical user interface connected to the control unit, wherein the control unit is configured to display a visual output on the graphical user interface comprising an area defined by a first axis and a second axis and wherein the first axis represents values of the first input value and the second axis represents values of the second input value; andan input unit configured to provide selection of a portion of the area,wherein the control unit is configured to set the first input value in response to the position of the selected portion relative the first axis and to set the second input value in response to the position of the selected portion relative the second axis.30. The breathing apparatus of claim 29 , wherein the area comprises at least a first sub-area which represents a primary operational area comprising selectable portions at ...

GAS FLOW REVERSING ELEMENT WITH BYPASS AND METHOD FOR CONTROLLING EXPIRATION OF A PATIENT

A gas flow reversing element is disclosed that includes a main piece comprising an inflow region, a nozzle region and a mixing region, and further includes a branching piece. The inflow region connects a pressure connector to a closable outlet opening in the mixing region, the branching piece connecting the nozzle region to a line connector. With the outlet opening opened, gas flow flowing along a first flow path from the pressure connector through the nozzle to the outlet opening, generates a gas flow in the branching piece flowing along a second flow path from the line connector to the outlet opening. The reversing element further includes a bypass, closable by at least one closing element, connecting the pressure connector and the line connector so that a gas flow can flow along a third flow path via the inflow region, and bypass the nozzle via the bypass. 113-. (canceled)14. A method for controlling expiration of a patient , wherein an expiration phase of ventilation of a patient is being controlled , wherein the method comprises at least the steps of:1. measuring a pressure value of an expiratory gas flow or expiratory gas volume, wherein the pressure value is a static and/or dynamic pressure value; and2. regulating the expiratory volumetric gas flow;wherein regulating expiratory volumetric gas flow according to step 2 is conducted based on the measured value of step 1.15. The method according to claim 14 , wherein the expiration is controlled by suction.16. The method according to claim 14 , wherein during an expiratory phase claim 14 , the expiratory gas flow passes exclusively through a lumen and a ventilation device.17. The method according to claim 16 , wherein the lumen has a small inner diameter of 6 mm or less and/or a cross sectional area of at most 50 mm.18. The method according to claim 14 , wherein regulating the expiratory volumetric gas flow achieves a high frequency ventilation of up to at least 100 breaths per minute claim 14 , and a low flow ...

Nitrous Oxide Anesthetic Administration System

A system and method for administering nitrous oxide to a patient has a fluid control system that allows a user to monitor and control the supply of gases to a patient. A shutoff valve allows a user to selectively activate the fluid control system. Oxygen flow is adjusted by a flow controlling valve. A differential pressure regulator allows flow of nitrous oxide in response to sufficient oxygen flow. Flow of the nitrous oxide is further controlled by a ratio controlling valve. A display shows the flow of the gases through the fluid control system. A flush valve allows a user to flush the output with oxygen. A flow indicator light may be included. An optional output selector allows the user to direct the flow to one of various output ports. An optional safety scavenge valve prevents operation of the fluid control system when there is insufficient scavenge vacuum pressure.

Cannula For Minimizing Dilution Of Dosing During Nitric Oxide Delivery

The present invention generally relates to, amongst other things, systems, devices, materials, and methods that can improve the accuracy and/or precision of nitric oxide therapy by, for example, reducing the dilution of inhaled nitric oxide (NO). As described herein, NO dilution can occur because of various factors. To reduce the dilution of an intended NO dose, various exemplary nasal cannulas, pneumatic configurations, methods of manufacturing, and methods of use, etc. are disclosed.

Bi-level Positive Airway Pressure Device

A bi-level positive airway pressure device includes a housing that has a patient port for connecting to an airway of a patient. Within the housing is a device that generates a positive airway pressure directed towards to patient port. Also within the housing is a system that mechanically detects exhalation (by the patient that is connected to the patient port) that enters into the patient port. Responsive to detecting exhalation, a blocking device occludes the device that generating positive airway pressure, thereby reducing or stopping the positive airway pressure until the system that mechanically detects exhalation no longer detects exhalation, at which time the blocking device is operated to no longer occlude the device for generating positive airway pressure, thereby providing positive airway pressure to the patient port during, for example, inhalation. 1. A bi-level positive airway pressure device comprising:a housing having a patient port for connecting to an airway of a patient;means for generating a positive airway pressure directed towards the patient port;mechanical means for detecting exhalation entering into the patient port;means for selectively blocking the means for generating positive airway pressure, the means for selectively blocking operative to block the positive airway pressure responsive to the means for detecting having detected exhalation.2. The bi-level positive airway pressure device of claim 1 , wherein the mechanical means for detecting comprises a gas jet directing a flow of a gas across an exhalation area such that in absence of exhalation claim 1 , the gas jet is directed at a first port and in presence of the exhalation claim 1 , the gas jet is deflected and directed at a second port.3. The bi-level positive airway pressure device of claim 2 , wherein the first port is interfaced to a first diaphragm and the second port is interfaced to a second diaphragm.4. The bi-level positive airway pressure device of claim 3 , wherein the first ...

RESPIRATORY FACE MASK AND BREATHING CIRCUIT ASSEMBLY

A disposable breathing circuit is adapted to be connected between a disposable face mask and a vacuum source for delivering fresh gas to the face mask and for scavenging waste gas exhaled from the face mask. The breathing circuit includes a fresh gas supply limb and an exhalation limb and a scavenging limb coupled to the exhalation limb. The scavenging limb includes a one-way valve to prevent re-breathing, a flexible flow-through reservoir bag used to store exhaled gas, and an output tube adapted to be coupled between the flow-through reservoir bag and the vacuum source. 1. A breathing circuit apparatus for use with a face mask of a patient , a fresh gas output of a gas delivery device , and a vacuum source , said apparatus comprising:a main tubular limb, said main tubular limb having opposed first and second ends, said main tubular limb defining a gas supply lumen of first diameter and an exhalation lumen of second diameter disposed with respect to said first diameter lumen along substantially the entire length thereof, said first end of said main tubular limb coupled to said face mask, such that said main tubular limb is in communication with said face mask;a branched coupling, said branched coupling having a first connection port, a second connection port, and a third connection port,said opposed second end of said main tubular limb being attached to said first connection port of said branched coupling,said branched coupling having a first internal passage extending between said first connection port and said second connection port thereof for transmission of said fresh gas output supplied by said gas delivery device to and through said gas supply lumen of said main tubular limb,said branched coupling further having a second internal passage extending between said first and third connection ports thereof for receipt and transmission of exhaled patient breath supplied from said face mask through said exhalation lumen of said main tubular limb; anda scavenger limb, ...

TRACHEOSTOMY TUBE WITH INNER CANNULA

A tracheal tube assembly includes an outer cannula configured to be positioned in a patient airway and an inner cannula configured to be disposed inside the outer cannula. The tracheal tube assembly further includes a flange member secured about the outer cannula, and an outer cannula connector coupled to a proximal end of the outer cannula. The inner cannula includes a proximal end region with features that facilitate insertion and/or removal. 1. A tracheal tube assembly comprising:an outer cannula configured to be positioned in a patient airway;a flange member secured about the outer cannula;an outer cannula connector coupled to a proximal end of the outer cannula; andan inner cannula configured to be disposed inside the outer cannula, the inner cannula comprising a conduit configured to be inserted into the outer cannula to transfer gas to a patient, wherein the conduit comprises a proximal region, wherein the proximal region is configured to be inserted in the outer cannula connector, and wherein the proximal region comprises a protrusion configured to engage with a complementary window or recess in the outer cannula connector.2. The assembly of claim 1 , wherein the recess extends completely through a wall of the outer cannula connector such that the protrusion is visible from an exterior of the assembly.3. The assembly of claim 1 , wherein the inner cannula comprises a compressible region positioned distally of the protrusion and configured to compress the inner cannula axially.4. The assembly of claim 1 , comprising a second protrusion positioned opposite the protrusion.5. The assembly of claim 1 , wherein the proximal region comprises two ears configured to be biased towards one another to compress the proximal region for insertion and wherein the protrusion is positioned on one of the two ears.6. The assembly of claim 1 , wherein the outer cannula connector comprises a coupling portion adjacent to the flange member and wherein the complementary window or ...

MEDICAL DEVICE FOR NEGATIVE PRESSURE VENTILATION

An exemplary example of a medical device can include a retention structure for at least partially encircling a patient's body, the retention structure including a central member and a support portion configured to be placed underneath a patient, a piston extending from the central member, a driver coupled to the piston configured to retract and extend the piston, a patient contact member attached to the piston, the patient contact member configured to adhere to the patient's body, and a controller. The controller can be configured to cause the driver during a session to perform at least two cycles of negative pressure ventilation, each of the at least two cycles of negative pressure ventilation including positioning the piston at a reference position, retracting the piston from the reference position to an expansion position to expand a chest of a patient to generate negative pressure ventilation, and returning the piston from the expansion position to the reference position. 1. A medical device , comprising:a retention structure for at least partially encircling a patient's body, the retention structure including a central member and a support portion configured to be placed underneath a patient;a piston extending from the central member;a driver coupled to the piston configured to retract and extend the piston;a patient contact member attached to the piston, the patient contact member configured to adhere to the patient's body; and position the piston at a reference position;', 'retract the piston from the reference position to an expansion position to expand a chest of a patient to generate negative pressure ventilation; and', 'return the piston from the expansion position to the reference position., 'a controller configured to cause the driver during a session to perform at least two cycles of negative pressure ventilation, each of the at least two cycles of negative pressure ventilation including2. The medical device of claim 1 , wherein the at least two cycles ...

SYSTEM AND METHOD FOR VIBRATORY, HIGH FREQUENCY VENTILATION OF NEONATES AND INFANTS

One aspect of the present disclosure relates to a system for providing non-invasive, high frequency ventilation to a neonate or an infant in need thereof. The system can include a tubing array, a vibration device, and a bifurcated cannula. The tubing array can be adapted to receive a flow of pressurized gas therethrough. The vibration device can be fluidly coupled to the tubing array and configured to generate and apply a jet of air to the flow of pressurized gas. The bifurcated cannula can be fluidly coupled to the tubing array and have independently movable first and second prongs that are sized and dimensioned for insertion into first and second nostrils, respectively, of the neonate or the infant. 1. A system for providing high frequency ventilation to a neonate or an infant in need thereof , the system comprising:a tubing array adapted to receive a flow of pressurized gas therethrough;a vibration device fluidly coupled to the tubing array and being configured to generate and apply a jet of air to the flow of pressurized gas; anda bifurcated cannula fluidly coupled to the tubing array and having independently movable first and second prongs that are sized and dimensioned for insertion into first and second nostrils, respectively, of the neonate or the infant.2. The system of claim 1 , wherein the vibration device further comprises:a housing having at least one orifice;one or more vibrating elements within the housing, the one or more vibrating elements and the housing defining a chamber that is fluidly coupled to the at least one orifice; anda signal generator component electrically coupled to the one or more vibrating elements and configured to provide an electronic signal to the one or more vibrating elements to cause the vibrating element(s) to oscillate within the housing;wherein oscillation of the one or more vibrating elements produces the jet of air.3. The system of claim 1 , wherein one or more of the vibrating elements comprises a piezoelectric ...

THERMISTOR FLOW SENSOR HAVING MULTIPLE TEMPERATURE POINTS

A gases flow rate sensing system may be configured to operate in at least two different target temperature modes, based upon a measured temperature of the gases flow. In some embodiments, the gases flow sensing system may have a voltage divider containing a thermistor. The gases flow rate may be determined based upon a voltage output indicating an amount of power needed to maintain the thermistor at a target temperature as specified by the target temperature mode, and a measured temperature of the gases flow.

PATIENT INTERFACE ASSEMBLY FOR RESPIRATORY THERAPY

A patient interface assembly includes a housing that defines an inlet port and an outlet port. A jet pump receives pressurized gas flow from the inlet port and delivers the gas flow to the outlet port. A nebulizer is fluidly coupled to the outlet port and positioned to introduce medication into the gas flow and deliver medicated gas flow to a patient. 1. A method for delivering respiratory therapy to a patient , comprising:delivering pressurized gas flow to an inlet port of a housing;drawing in ambient air from an entrainment port in the housing;combining the pressurized gas flow with the ambient air using a jet pump disposed within the housing;delivering combined air from the jet pump to a nebulizer; introducing medication into the gas flow using the nebulizer; anddelivering medicated gas flow to the patient.2. The method of claim 1 , and further comprising providing an exhalation port in the housing to exhaust air flow received from the patient.3. The method of claim 1 , and further comprising:combining the pressurized gas flow with ambient air in an entrainment region of the jet pump;forcing combined air through a throat region of the jet pump; anddelivering combined air to an expansion region of the jet pump.4. The method of claim 1 , wherein a spring biases the jet pump with respect to the housing in a direction toward the inlet port.5. The method of claim 1 , wherein as the jet pump moves away from the outlet port claim 1 , a flow path is created between the exhalation port and the outlet port.6. The method of claim 1 , wherein the housing includes a nebulizer port fluidly coupling the nebulizer to the housing.7. The method of claim 1 , wherein a cut-out is defined through the housing and tapers toward the outlet port.8. A method for delivering respiratory therapy to a patient claim 1 , comprising:delivering pressurized gas flow to an inlet port of a housing;drawing in ambient air from an entrainment port in the housing;combining the pressurized gas flow with ...

ANESTHETIC CIRCUIT HAVING A HOLLOW FIBER MEMBRANE

An anesthetic circuit is provided for treating a patient. The anesthetic circuit includes a membrane having a plurality of hollow fibers. Also provided is a fluid separation apparatus connectable to an anesthetic circuit. In a further embodiment, a method is provided for anesthetic treatment of a patient. 1. An anesthetic circuit for treating a patient , comprising:a flow passage;an anesthetic agent inlet in fluid communication with the flow passage for introducing an external anesthetic agent into the flow passage;at least one fluid port in fluid communication with the flow passage for providing at least the external anesthetic agent to the patient, whereinthe at least one fluid port receives an exhaled fluid mixture from the patient, the exhaled fluid mixture comprising an exhaled oxygen, an exhaled carbon dioxide and an exhaled anesthetic agent, the flow passage being in fluid communication with the at least one fluid port for receiving the exhaled fluid mixture from the at least one fluid port; the membrane is pervious to the exhaled carbon dioxide such that the membrane has an exhaled carbon dioxide-to-exhaled anesthetic agent selectivity of greater than 1,', 'the exhaled fluid mixture contacts the membrane wherein the membrane separates a portion of the exhaled carbon dioxide from the exhaled fluid mixture to leave a modified fluid mixture in the flow passage having a lower amount of the exhaled carbon dioxide than the exhaled fluid mixture, and', 'the at least one fluid port is configured to receive the modified fluid mixture from the membrane and provide at least the modified fluid mixture to the patient; and, 'a membrane comprising a plurality of hollow fibers, the membrane being in fluid communication with the flow passage, configured to receive the exhaled fluid mixture from the at least one fluid port, and at least partially impervious to the exhaled anesthetic agent to at least partially retain the exhaled anesthetic agent in the flow passage after the ...

Uvc sterilization systems and methods for patient ventilation

A ventilator system includes a gas flow chamber configured to receive ventilation gas circulating in a ventilation gas pathway of the ventilator and at least one UVC lamp. The UVC lamp is configured to radiate UVC spectrum light into the gas flow chamber to inactivate pathogens in the ventilation gas. A flow sensor is configured to measure a gas flow rate of the ventilation gas and a controller is configured to receive the gas flow rate, determine an intensity based on the gas flow rate, and control power to the UVC lamp based on the intensity.

Head immobilization device with inhaler, method for making same and method of using same

Head and neck radiation therapy for the treatment of cancer or the like is carried out using a mask which comprises a heat-softenable, conformable and perforate plastic sheet and a frame which can be secured to the surface of a treatment table or chair to immobilize the patient's head and neck. An inhaler is placed on the patient's face prior to molding the thermoplastic sheet over the patient's face such that the resulting contoured sheet captures the inhaler and produces a unitary assembly. Inlet and outlet hoses can be attached to the inhaler for administering an anesthetic or soporific in gaseous form, such as nitrous oxide, for the purpose of calming and tranquilizing the patient for reducing feelings of claustrophobic anxiety during the treatment. A separate scavenging unit may be added.

CONVERSION OF NITROGEN DIOXIDE (NO2) TO NITRIC OXIDE (NO)

Various systems, devices, NOabsorbents, NOscavengers and NOrecuperator for generating nitric oxide are disclosed herein. According to one embodiment, an apparatus for converting nitrogen dioxide to nitric oxide can include a receptacle including an inlet, an outlet, a surface-active material coated with an aqueous solution of ascorbic acid and an absorbent wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material and the absorbent such that nitrogen dioxide in the gas flow is converted to nitric oxide. 125.-. (canceled)26. A method for delivering nitric oxide to a patient , comprising:supplying:a gas source of nitrogen dioxide, dinitrogen tetraoxide, or nitric oxide;a first device having an inlet, an outlet, and a porous solid matrix, wherein the inlet is configured to receive a gas flow from the source and fluidly communicate the gas flow to the outlet through the porous solid matrix to convert nitrogen dioxide in the gas flow into nitric oxide; anda recuperator coupled to the outlet of the first device, wherein the recuperator includes an exit shell and an inside shell, the inside shell includes inner and outer tubes with fixed annulus;converting nitrogen dioxide into nitric oxide in the recuperator prior to delivery to the patient; anddelivering nitric oxide to the patient.27. The method of claim 26 , wherein the recuperator has a flow resistance of less than 3 cm of water pressure at a flow of 60 L/minute.28. The method of claim 26 , wherein the recuperator has a flow resistance of less than 1 cm water at 15 L/min.29. The method of claim 26 , wherein the recuperator is operated at atmospheric pressure.30. The method of claim 26 , wherein the recuperator has an oxygen concentration of in the range of 21 to 100%.31. The method of claim 26 , wherein the recuperator has a humidity of dry to 99%.32. The method of claim 26 , wherein the recuperator is thermally insulated.33. The method ...

Systems and methods for generating nitric oxide

Systems and methods for nitric oxide generation are provided. In an embodiment, an NO generation system can include a controller and disposable cartridge that can provide nitric oxide to two different treatments simultaneously. The disposable cartridge has multiple purposes including preparing incoming gases for exposure to the NO generation process, scrubbing exhaust gases for unwanted materials, characterizing the patient inspiratory flow, and removing moisture from sample gases collected. Plasma generation can be done within the cartridge or within the controller. The system has the capability of calibrating NO and NO2 gas analysis sensors without the use of a calibration gas.

NITROUS OXIDE ANESTHETIC ADMINSTRATION SYSTEM

A system and method for administering nitrous oxide to a patient has a fluid control system that allows a user to monitor and control the supply of gases to a patient. A shutoff valve allows a user to selectively activate the fluid control system. Oxygen flow is adjusted by a flow controlling valve. A differential pressure regulator allows flow of nitrous oxide in response to sufficient oxygen flow. Flow of the nitrous oxide is further controlled by a ratio controlling valve. A display shows the flow of the gases through the fluid control system. A flush valve allows a user to flush the output with oxygen. A flow indicator light may be included. An optional output selector allows the user to direct the flow to one of various output ports. An optional safety scavenge valve prevents operation of the fluid control system when there is insufficient scavenge vacuum pressure. 1. A fluid control system for administering nitrous oxide and oxygen , comprising:a fluid control system for controlling the flow of nitrous oxide and oxygen;a nitrous oxide and oxygen supply fluidly connected to the fluid control system;a vacuum source fluidly connected to the fluid control system; anda safety scavenge system connected to the fluid control system.2. A method for administering nitrous oxide , comprising the following steps:providing a fluid flow generated by a vacuum source;providing nitrous oxide fluid from a nitrous oxide source;providing oxygen from an oxygen source;controlling the flow of oxygen through a fluid control system;connecting a safety scavenge system to a fluid connection between the nitrous oxide source and said vacuum source;releasing the nitrous oxide through said safety scavenge system upon a vacuum source reaching or exceeding one or more predetermined ranges; andshutting off the nitrous oxide when the scavenging vacuum pressure is less than the one or more predetermined ranges.3. A system for administering nitrous oxide , comprising:a fluid control system for ...

Vent Arrangement For Respiratory Mask

A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area such as one defined by overlapping apertures of the assembly or a conduit having a variable gas passage channel. The vent assembly may be formed by nested structures, such as conic or cylindrical members, each having an opening of the overlapping apertures. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid or voice coil, manipulates an aperture of the vent assembly. The actuator may be configured for control by a controller to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection, rebreathing volume calculation and/or leak detection. 1. An apparatus for automated control of gas washout of a patient interface of a respiratory treatment apparatus comprising:a vent assembly having a variable exhaust area defined by one or more apertures of the vent assembly, the vent assembly being associated with a patient interface to vent expiratory gas; andan actuator to manipulate said one or more apertures of the vent assembly.2. The apparatus of further comprising a controller including a processor claim 1 , the controller coupled with the actuator claim 1 , the controller configured to operate the actuator to change the exhaust area of the vent assembly.3. The apparatus of wherein the controller is configured to switch between a treatment setting for the variable exhaust area and a comfort setting for the variable exhaust area.4. The apparatus of wherein the controller is configured with a user interface for input of comfort settings including a setting for the variable exhaust area.5. The apparatus of wherein the comfort setting further includes one or more of a humidity setting claim 3 , pressure ...

PATIENT INTERFACE WITH INTEGRATED JET PUMP

A patient circuit of a ventilation system, such as a non-invasive open ventilation system, wherein the patient circuit comprises a nasal pillows style patient interface that incorporates at least one “Venturi effect” jet pump proximal to the patient. The patient circuit further comprises a pair of uniquely configured 3-way connectors which, in cooperation with several uniquely configured tri-lumen tubing segments, facilitate the cooperative engagement of the patient interface to a ventilator of the ventilation system. 1. A patient interface for providing ventilation to an individual , the patient interface comprising:a manifold housing defining at least one gas pathway; jet pump housing defining at least one entrainment port in fluid communication with ambient air;', 'a jet nozzle cooperatively engaged to the jet pump housing, the jet nozzle defining a high-pressure jet nozzle outlet port and a low-pressure jet nozzle outlet port disposed in side-by-side relation to each other, at least the high-pressure jet nozzle outlet port being operative to facilitate air entrainment through the entrainment port and mixing of the entrained air with gas concurrently introduced into the gas pathway from the high and low-pressure jet nozzle outlet ports;, 'at least one jet pump assembly coupled to the manifold housing and comprisingat least one sensing tube extending into fluid communication with the gas pathway.2. The patient interface of claim 1 , wherein the high-pressure jet nozzle outlet port and the low-pressure jet nozzle outlet port are each at least partially aligned with the entrainment port.3. The patient interface of claim 1 , wherein the low-pressure jet nozzle outlet port is disposed in closer proximity to the entrainment port in comparison to the high-pressure jet nozzle outlet port.4. The patient interface of claim 1 , wherein the jet nozzle is formed such that the low-pressure jet nozzle outlet port is oblique relative to a flow axis of gas emanating therefrom.5. ...

Systems for anesthetic agent vaporization

Methods and systems are provided for delivering anesthetic agent to a patient. In one embodiment, a liquid anesthetic agent container includes a base region, an interior of the base region configured to hold liquid anesthetic agent, an adapter region, and a capillary force vaporizer (CFV) housed in the adapter region. The adapter region includes a coupling end configured to couple to a patient breathing circuit to supply anesthetic agent vaporized by the CFV to a patient.

METHODS AND APPARATUS FOR OXYGENATION AND/OR CO2 REMOVAL

Described is an apparatus for oxygenation and/or CO2 clearance of a patient, comprising: a flow source or a connection for a flow source for providing a gas flow, a gas flow modulator, a controller to control the gas flow, wherein the controller is operable to: receive input relating to heart activity and/or trachea gas flow of the patient, and control the gas flow modulator to provide a varying gas flow with one or more oscillating components with a frequency or frequencies based on the heart activity and/or trachea flow of the patient. 1. An apparatus for oxygenation and/or CO2 clearance of a patient , comprising:a flow source or a connection for a flow source for providing a gas flow,a gas flow modulator,a controller to control the gas flow receive input relating to heart activity and/or trachea gas flow of the patient, and', 'control the gas flow modulator to provide a varying gas flow with one or more oscillating components with a frequency or frequencies based on the heart activity and/or trachea flow of the patient., 'wherein the controller is operable to2. An apparatus according to wherein the apparatus:comprises a heart activity sensor or has input for receiving input from a heart activity sensor, and/orcomprises memory for storing heart activity information,wherein the controller receives input relating to heart activity from the sensor, input and/or memory, and/orcomprises a flow sensor or has input for receiving input from a flow sensor.3. An apparatus according to or wherein the varying gas flow has an oscillating flow rate and the controller controls the gas flow modulator to provide the varying gas flow with an oscillating flow rate of: about 375 litres/min to about 0 litres/min claim 1 , or preferably of about 240 litres/min to about 7.5 litres/min claim 1 , or more preferably of about 120 litres/min to about 15 litres/min.4. An apparatus according to wherein the oscillating flow rate comprises a base flow rate component claim 3 , wherein the base ...

MASK VENT

A vent arrangement is provided to a mask or associated conduit to discharge exhaled gas from the mask to atmosphere. The vent arrangement is structured to diffuse the exhaust vent flow to produce less air jetting, thereby increasing the comfort of the patient and their bed partner. For example, the vent arrangement may include one or more grill components and/or media constructed and arranged to diffuse vent flow. 118.-. (canceled)19. A mask system configured to deliver air pressurized by a flow generator system by at least 4 cm HO above atmospheric pressure to the airways of a patient to treat sleep disordered breathing (SDB) by continuous positive airway pressure (CPAP) therapy , the mask system comprising:a mask component; anda vent component provided to the mask component, the vent component configured to discharge gas from the mask component to atmosphere during therapy,the vent component including an annular side wall and a plurality of vent holes for gas washout arranged on the annular side wall,wherein the vent holes are arranged radially on the annular side wall to radially divide exhaust flow along at least a portion of a circumference of the annular side wall.20. The mask system according to claim 19 , wherein the vent holes are arranged to radially divide exhaust flow over one or more portions totaling at least 90° of the circumference of the annular side wall.21. The mask system according to claim 19 , wherein the vent holes are arranged to radially divide exhaust flow up to 90° of the circumference of the annular side wall.22. The mask system according to claim 19 , wherein the vent holes are arranged to radially divide exhaust flow up to 180° of the circumference of the annular side wall.23. The mask system according to claim 19 , wherein the vent holes are arranged to radially divide exhaust flow up to 270° of the circumference of the annular side wall.24. The mask system according to claim 19 , wherein the vent holes are arranged to radially divide ...

Systems and methods for high velocity nasal insufflation

Systems, methods, and devices for humidifying a breathing gas are presented. The system includes a base unit, a vapor transfer unit, a nasal cannula, and a liquid container. The base unit includes a blower. The vapor transfer unit is external to the base unit and includes a gas passage, a liquid passage, a gas outlet, and a membrane separating the gas passage and the liquid passage. The membrane permits transfer of vapor into the gas passage from liquid in the liquid passage. The nasal cannula is coupled to the gas outlet. The liquid container is configured to reversibly mate with the base unit.

COOLING ELEMENT SYSTEM FOR USE WITHIN A COOLING DEVICE OF A CLOSED-CIRCUIT RESPIRATOR

A cooling element system (), for use within a cooling device () of a closed-circuit respirator (), includes a plurality of cooling elements and a collar (). The cooling elements each have an element housing (), having a liquid-tight closure (), filled or fillable with a coolant. The element housings allow for a common mounting arrangement of the number of cooling elements within the cooling device. The collar encloses the cooling elements in the common mounting arrangement and has a carrying area (), which is configured to carry the number of cooling elements in the common mounting arrangement at the carrying area. A removal of the number of cooling elements, in the common mounting arrangement, from the cooling device and an insertion into the cooling device, are possible by means of the carrying area. 1. A cooling element system for use within a cooling device of a closed-circuit respirator , the cooling element system comprising:a plurality of cooling elements, each of the plurality of cooling elements comprising an element housing, which has a liquid-tight closure and is filled with a coolant or fillable with a coolant, wherein the element housings cooperate to provide a common mounting arrangement of the plurality of cooling elements within the cooling device; anda collar enclosing the plurality of cooling elements in the common mounting arrangement, the collar having a carrying area configured to carry the plurality of cooling elements in the common mounting arrangement at the carrying area, whereby one or more of the plurality of cooling elements in the common mounting arrangement is removable from the cooling device via the carrying area and one or more of the plurality of cooling elements in the common mounting arrangement is insertable to the cooling device via the carrying area.2. A cooling element system in accordance with claim 1 , wherein the collar is formed from a plastic.3. A cooling element system in accordance with claim 2 , wherein the collar is ...

Halocarbon recycling methods and systems

A method for capturing halocarbon from a gas, the method comprising processing gas containing halocarbon with material which is undamaged by exposure to supercritical fluid. A method for reclaiming halocarbon from a material, the method comprising exposing the material to a supercritical fluid.A module for processing a gas containing halocarbon, the module comprising material for capturing halocarbon from a gas, wherein the module is arranged to withstand supercritical fluid.

VAPOR TRANSFER CARTRIDGE

Systems, methods, and devices are disclosed for manufacturing a vapor transfer cartridge with a constant inner diameter to maximize the area available for fibers required for heating and humidifying a breathing gas. In one aspect, a vapor transfer cartridge includes a center tube extending along a first axis from a first to a second end, having a continuous inner diameter, a first header piece configured as a cap and including a channel about an inner circumference of the header piece coupled to the first end of the center tube, a second header piece coupled to the second end of the center tube, and a plurality of fibers arranged along the axis of the center tube from the first end to the second end. The first header piece further includes a first port, and a baffle. 1. A vapor transfer cartridge comprising:a center tube extending along a first axis from a first end to a second end, having a continuous inner diameter throughout; a channel about an inner circumference of the header piece,', 'a first port, and', 'a baffle,, 'a first header piece coupled to the first end of the center tube, the first header piece configured as a cap and comprisinga second header piece coupled to the second end of the center tube; anda plurality of fibers arranged along the axis of the center tube from the first end to the second end.2. The vapor transfer cartridge of claim 1 , wherein the second header piece includes a second port.3. The vapor transfer cartridge of claim 2 , further comprising:a first end cap coupled to the first header piece, the first end cap comprising a third port; anda second end cap coupled to the second header piece, the second end cap comprising a fourth port.4. The vapor transfer cartridge of claim 3 , wherein the first port claim 3 , second port claim 3 , third port and fourth port are aligned along a longitudinal axis.5. The vapor transfer cartridge of claim 4 , wherein the ports are configured to be attached to a water inlet claim 4 , a water outlet claim 4 ...

Methods and apparatus for high frequency pulmonary ventilation

Pulmonary ventilator methods and systems are provided winch include a housing having a user interface control panel; a pneumatic circuit for delivering a high frequency pressure wave from the housing to a patient lung; a variable volume disposed within the housing including a stationary plate secured to the housing and a reciprocating plate pivotably mounted with respect to the stationary plate; and a magnet assembly disposed within the housing and configured to pivot the reciprocating plate. The variable volume may also include a resiliently contractible section extending between and joining a portion of the stationary plate and a portion of the reciprocating plate, wherein the resiliently contractible section may be in the form of a bellows and/or a pleated material.

SYSTEMS AND METHODS FOR HIGH VELOCITY NASAL INSUFFLATION

Systems, methods, and devices for humidifying a breathing gas are presented. The system includes a base unit, a vapor transfer unit, a nasal cannula, and a liquid container. The base unit includes a blower. The vapor transfer unit is external to the base unit and includes a gas passage, a liquid passage, a gas outlet, and a membrane separating the gas passage and the liquid passage. The membrane permits transfer of vapor into the gas passage from liquid in the liquid passage. The nasal cannula is coupled to the gas outlet. The liquid container is configured to reversibly mate with the base unit. 1. A system for delivering breathing gas , the system comprising:a base unit comprising a blower; a gas passage,', 'a liquid passage,', 'a gas outlet, and', 'a membrane separating the gas passage and the liquid passage, wherein the membrane permits transfer of vapor into the gas passage from liquid in the liquid passage;, 'a vapor transfer unit external to the base unit and comprisinga nasal cannula coupled to the gas outlet; anda liquid container configured to reversibly mate with the base unit.2. The system of claim 1 , wherein the liquid container interlocks with a surface of the base unit.3. The system of claim 1 , wherein the container has a surface formed of a flexible film4. The system of claim 1 , wherein the base unit further comprises a heating element for heating liquid claim 1 , the heating element having a heating surface.5. The system of claim 1 , wherein the flexible film is configured to mate with the heating surface when the liquid container mates with the base unit.6. The system of claim 1 , wherein the blower is configured to pressurize breathing gas to less than about 276 kPa (40 psi).7. The system of claim 1 , wherein the liquid container includes an impeller.8. The system of claim 1 , wherein the base unit includes a motor.9. The system of claim 8 , wherein the motor is magnetically coupled to impeller.10. The system of claim 1 , wherein the liquid ...

SYSTEMS FOR FEEDBACK CONTROL OF ANESTHETIC AGENT CONCENTRATION

Methods and systems are provided for delivering anesthetic agent to a patient. In one embodiment, a system includes an anesthetic agent reservoir, a pump fluidically coupled to the agent reservoir, an injector configured to receive pressurized anesthetic agent from the pump, a vaporizer comprising a heated chamber configured to receive and vaporize the anesthetic agent injected by the injector and supply a mix of the vaporized anesthetic agent and medical gas to a subject via a supply line, and a controller. The controller stores instructions executable to determine a concentration of the vaporized anesthetic agent in the mix and adjust one or more injector parameters based on a difference between the concentration of the vaporized anesthetic agent and a commanded concentration. 1. A system for delivering an anesthetic agent , comprising:an anesthetic agent reservoir;a pump fluidically coupled to the agent reservoir;an injector configured to receive pressurized anesthetic agent from the pump;a vaporizer comprising a heated chamber configured to receive and vaporize the anesthetic agent injected by the injector and supply a mix of the vaporized anesthetic agent and medical gas to a subject via a supply line; and determine a concentration of the vaporized anesthetic agent in the mix; and', 'adjust one or more injector parameters based on a difference between the concentration of the vaporized anesthetic agent and a commanded concentration., 'a controller storing instructions executable to2. The system of claim 1 , further comprising an anesthetic agent concentration sensor positioned in the supply line claim 1 , and wherein the instructions are executable to determine the concentration of the vaporized anesthetic agent in the mix based on output from the anesthetic agent concentration sensor.3. The system of claim 1 , wherein the one or more injector parameters comprise one or more of injector duty cycle frequency claim 1 , open duration claim 1 , and injector valve ...

Anesthesia Vaporizer Reservoir and System

An anesthesia vaporizer system includes a vaporizer reservoir forming a sump chamber containing a liquid anesthetic agent, a piston that forms a first chamber on a first side of the piston. The vaporizer reservoir has a fill port configured to receive a refill container containing liquid anesthetic agent and to permit flow into the first chamber. A motor moves the piston between a first position and a second position, wherein the volume of the first chamber increases as the piston moves from the first position towards the second position. The liquid anesthetic agent is thereby drawn from the refill container into the first chamber. A transfer valve is configured to permit the liquid anesthetic agent to flow from the first chamber into the sump chamber. An outlet port delivers the liquid anesthetic agent from the sump chamber into a vaporizing system that vaporizes it for delivery to a patient. 1. An anesthesia vaporizer system comprising:a vaporizer reservoir forming a sump chamber that contains liquid anesthetic agent;a piston in the vaporizer reservoir, wherein the piston forms a first chamber within the vaporizer reservoir on a first side of the piston;a fill port configured to receive a refill container containing liquid anesthetic agent and to permit flow from an exterior of the vaporizer reservoir into the first chamber;a motor that moves the piston between a first position within the vaporizer reservoir and a second position within the vaporizer reservoir, wherein the volume of the first chamber increases as the piston moves from the first position toward the second position;wherein the system is configured such that as the piston moves from the first position toward the second position, the liquid anesthetic agent is drawn from the refill container into the first chamber;a transfer valve configured to permit the liquid anesthetic agent to flow from the first chamber into the sump chamber; andan outlet port that delivers the liquid anesthetic agent from the ...

Cannula For Minimizing Dilution Of Dosing During Nitric Oxide Delivery

The present invention generally relates to, amongst other things, systems, devices, materials, and methods that can improve the accuracy and/or precision of nitric oxide therapy by, for example, reducing the dilution of inhaled nitric oxide (NO). As described herein, NO dilution can occur because of various factors. To reduce the dilution of an intended NO dose, various exemplary nasal cannulas, pneumatic configurations, methods of manufacturing, and methods of use, etc. are disclosed.

Ventilation mask

A nasal ventilation mask having one or more attachment ports located adjacent to and overlying an upper lip of a patient when worn.

Systems and methods for patient-proximate vapor transfer for respiratory therapy

Systems, methods, and devices for humidifying a breathing gas are presented. The system includes a source of pressurized breathing gas, a vapor transfer unit external to the source of pressurized breathing gas, a first gas tube connecting the source of pressurized breathing gas to the gas inlet of the vapor transfer unit and having a first length, a liquid supply having a heater that heats liquid, a first liquid tube coupling the liquid supply to the liquid inlet of the vapor transfer unit, and a second gas tube having a second length and connecting the gas outlet to a patient interface. The first length is greater than the second length. The vapor transfer unit includes a gas passage, a liquid passage, and a membrane separating the gas passage and the liquid passage. The membrane is positioned to transfer vapor from the liquid passage to the gas passage.

DISPERSION ANAESTHETIC DEVICE

The invention concerns a cartridge for an inhalation device for delivering anaesthetic to a human or animal wherein anaesthetic in said cartridge is dispersed in an anaesthetic control release medium; an inhalation device for use with said cartridge and a formulation comprising at least one selected anaesthetic and anaesthetic control release medium. 1. An anaesthetic cartridge for use with an inhalation device for human or veterinary use to deliver an inhalational or volatilised anaesthetic to a patient wherein said cartridge comprises: an adjustable stirrer or agitator; an anaesthetic control release medium and at least one selected inhalation anaesthetic , wherein the amount of said medium relative to said anaesthetic is such that when using said adjustable stirrer or agitator anaesthetic is delivered at a selected Minimum alveolar concentration (MAC) , at a substantially constant or controllable rate , within the range of 0.25-4.0×Minimum alveolar concentration (MAC) thereby allowing for either i) induction and/or maintenance of anaesthesia or ii) sedation.2. The anaesthetic cartridge according to wherein said anaesthetic is dispersed or distributed in said medium in a stable and chemically unaltered state.3. The anaesthetic cartridge according to wherein said anaesthetic control release medium is an emulsion.4. The anaesthetic cartridge according to wherein a non-anaesthetic component of the emulsion is non-volatile.5. The anaesthetic cartridge according to wherein said emulsion is provided by at least one non-ionic surfactant selected from the group consisting of halogenated non-ionic surfactants claim 3 , ethylene oxide based fluorocarbon surfactants claim 3 , propylene oxide or ethylene oxide based hydrocarbon surfactants claim 3 , partially fluorinated sulfosuccinate surfactants and branched hydrocarbon sulfosuccinate surfactants claim 3 , and any combination thereof.6. The anaesthetic cartridge according to wherein said emulsion is at least one non-ionic ...

METHOD AND SYSTEM FOR IMAGING

A method for dynamic investigation of a subject lung, the method comprising the steps of: (i) imparting an oscillation to the lung at one or more forcing frequencies so as to elicit a lung response, (ii) sensing the response of the lung simultaneously with the imparting of the oscillation to elicit a lung response, (iii) choosing at least one parameter used in the sensing to define the lung motion associated with the lung response, (iv) comparing one of the chosen parameters at each forcing frequency with the response at the forcing frequency in at least one region of the lung, and (v) recording the comparison of step (iv). 1. A method for dynamic investigation of a subject lung , the method comprising the steps of:(i) imparting an oscillation to the lung at one or more forcing frequencies so as to elicit a lung response,(ii) sensing the response of the lung simultaneously with the imparting of the oscillation to elicit a lung response,(iii) choosing at least one parameter used in the sensing to define the lung motion associated with the lung response,(iv) comparing one of the chosen parameters at each forcing frequency with the response at the forcing frequency in at least one region of the lung, and(v) recording the comparison of step (iv).2. A method according to wherein the sensing comprises imaging the response.3. A method according to which comprises the additional step (vi) of comparing a parameter between different regions throughout the lung and creating a visual representation thereof.4. A method according to wherein the oscillation is externally applied oscillation chosen from the group comprising mechanical input oscillation claim 1 , external chest wall oscillation claim 1 , heart oscillation or combinations thereof.5. A method according to wherein the oscillation imparted to the lung is of a single frequency.6. A method according to wherein the oscillation imparted to the lung is of multiple frequencies applied simultaneously or one after the other.7. ...

Anesthesia Station for Laboratory Animals and Method for Determining the Organohalogen Saturation Rate of the Filters of Such an Anesthesia Station

Provided herein is an anesthesia station for at least one laboratory animal, including an anesthesia area connected to at least one peripheral receiving the laboratory animal. The anesthesia area is able to supply the peripheral with, halogenated anesthetic gases. The station further includes a system for aspirating the halogenated gases from the peripheral and at least one filter having a determined organohalogen concentration retention capacity. The filter is arranged in such a way as to be crossed by the halogenated anesthetic gases from the peripheral during operation of the aspiration system. The station also includes a system for the automatic determination in real-time of the organohalogen saturation rate of the filter. 1. An anesthesia station for one or more laboratory animals , comprising:an anesthesia area connected to at least one peripheral receiving the laboratory animal, said anesthesia area being able to deliver halogenated anesthetic gases to said peripheral;a system for aspirating halogenated gases from the peripheral;at least one filter having a predetermined organohalogen concentration retention capacity, said filter being arranged in such a way as to be crossed by the halogenated anesthetic gases originating from the peripheral during operation of the aspirating system; anda system for automatically determining, in real time, the organohalogen saturation rate of the filter, said system comprising:a device for measuring instantaneous flow rates of the halogenated anesthetic gases passing through the filter, at given time intervals;a device for determining the concentration of the halogenated gases retained in the filter, on the basis of the instantaneous flow rates of the halogenated anesthetic gases measured at each given time interval; and,a control unit for calculating the saturation rate of the filter on the basis of the concentrations of the halogenated anesthetic gases determined at each time interval and on the basis of the predetermined ...

Systems and Methods for Ambulatory Generation of Nitric Oxide

Systems and methods are provided for portable and compact nitric oxide (NO) generation that can be embedded into other therapeutic devices or used alone. In some embodiments, an ambulatory NO generation system can be comprised of a controller and disposable cartridge. The cartridge can contain filters and scavengers for preparing the gas used for NO generation and for scrubbing output gases prior to patient inhalation. The system can utilize an oxygen concentrator to increase nitric oxide production and compliment oxygen generator activity as an independent device. The system can also include a high voltage electrode assembly that is easily assembled and installed. Various nitric oxide delivery methods are provided, including the use of a nasal cannula. 1. A portable nitric oxide (NO) generation system comprising:a housing configured to be portable;a reactant gas flow path configured to provide a reactant gas to one or more plasma chambers;one or more electrodes located in the one or more plasma chambers configured to generate a product gas containing nitric oxide using a flow of the reactant gas through the one or more plasma chambers;a controller configured to regulate the amount of nitric oxide generated in the reactant gas; and{'sub': '2', 'one or more scrubber paths configured to remove NOfrom the product gas generated by the one or more plasma chambers;'}wherein the portable NO generation system can be integrated with a device selected from a group consisting of a ventilator, a defibrillator, a ventricular assist device (VAD), a Continuous Positive Airway Pressure (CPAP) machine, a Bilevel Positive Airway Pressure (BiPAP) machine, a non-invasive positive pressure ventilator (NIPPV), a nasal cannula application, a nebulizer, an extracorporeal membrane oxygenation (ECMO), a bypass system, an automated CPR system, an oxygen delivery system, an oxygen concentrator, an oxygen generation system, and an automated external defibrillator AED.2. The portable nitric ...

Percussive Ventilation Breathing Head and Accessories

The percussive ventilation breathing head is adapted to be supplied with a flow of pulsatile gas fed to an elongated breathing head body at a proximal end thereof. The breathing head body defines an interior passageway therein. A reciprocating injector shuttle is movably mounted in the breathing head passageway. The shuttle moves distally due to the pulsatile gas, assisted by a diaphragm and a venturi-like jet nozzle which nozzle pulls nebulized aerosol from a depending plenum and a nebulizer attached below the depending plenum. A depending body defines the plenum. The generally cylindrical nebulizer is attached below the depending body. The shuttle is also biased in a proximal direction within the interior passageway and moves proximally due to the bias. The shuttle defines an internal flow passage from a proximal shuttle input port to a distal shuttle output port at the distalmost mouth of the percussive ventilation breathing head body. 1. A percussive ventilation breathing head adapted to be supplied with a flow of pulsatile gas comprising:an elongated breathing head body adapted to be supplied with the pulsatile gas flow at a proximal end thereof, said breathing head body defining an interior passageway therein;a reciprocating injector shuttle movably mounted in said breathing head passageway, said shuttle adapted to move distally due to said pulsatile gas, said shuttle biased in a proximal direction within said interior passageway and adapted to move proximally due to said bias, said shuttle defining an internal flow passage therein from a proximal shuttle input port to a distal shuttle output port;a unitary entrainment valve on said breathing head body having an entrainment valve body defining an entrainment valve chamber in fluid communication with said proximal shuttle input port, a valve flapper biased closed and separating an ambient environment from said entrainment valve chamber; andan over-pressure valve on said entrainment valve body adapted to release ...

Vent arrangement for respiratory mask

A control system provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly of the system may include a variable exhaust area, such as one defined by gears, radial exhaust revolvers and/or flow diverters for a conduit having a variable gas passage channel. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid, motor or voice coil, manipulates the vent assembly. The actuator may be configured for control by a processor to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection and/or leak detection.

Nitric oxide generating systems for inhalation

A moisture or hydrating liquid activatable solid formulation for nitric oxide (NO) generation includes a nitrite source; a copper (I) or copper (II) catalyst; an NO generation accelerant; and a solid pH buffer. The nitrite source is to generate NO when exposed to an effective amount of moisture or a hydrating liquid. The pH buffer is present in an amount sufficient to render a pH of the moisture or hydrating liquid activatable solid formulation from greater than 4 to about 9.0.

METHOD AND APPARATUS FOR DELIVERING A FLUID TO A PATIENT

The present invention relates to a method and apparatus for delivering medicated fluid or anaesthetic to a patient. An issue, particularly with small patients, is the issue of dead space in an anaesthetic circuit which can lead to hypoxia and difficulty with achieving anaesthesia. An apparatus in accordance with the present invention minimises or eliminates dead space by introducing fresh gas (e.g. containing anaesthetic) proximal to a respiratory opening of the subject's respiratory tract, and inducing a fluid flow to reduce re-breathing of fluid exhausted from the respiratory tract. 1a substantially conical elongate enclosure having a first end having a width sufficient to fit over and seal around a respiratory opening of the subject, and a second end that is narrower than the first end in which is formed an outlet; andan inlet arranged peripherally in the first end to enable introduction of fresh fluid into the first end of the enclosure at the periphery of the enclosure at a positive pressure with respect to the outlet to induce unidirectional fluid flow through the enclosure from the first end to the second end past the respiratory opening of the patient to the outlet in a direction of exhalation fluid flow from the patient, whereby expelled gases are removed from the second end of the enclosure by the unidirectional fluid flow to reduce re-breathing of fluid exhausted from the respiratory tract.. An apparatus for facilitating delivery of a fluid to a respiratory tract of a human or animal subject weighing up to 15 kilograms, the apparatus comprising: This application is a continuation of U.S. application Ser. No. 12/483,959, filed Jun. 12, 2009, which is a continuation of International Application No. PCT/AU2007/001920, filed Dec. 13, 2007, which claims the benefit of Australian Patent Application No. 2006252044, filed Dec. 13, 2006, all of which are incorporated herein by reference in their entirety.The present invention relates to a method and apparatus for ...

Ventilation of Airborne Contaminants from a Medical Patient

Medical gas or airborne contaminants can be evacuated from a vicinity of a face of a patient using an intake duct defining an intake opening at a single intake location. The single intake opening is supported offset to one side of a face of the patient and an exhaust flow is applied at a flow rate of greater than 200 cubic feet per minute such that a single flow is drawn across the face of the user and into the intake duct. By drawing from only one side of the face of the patient with the prescribed flow rate, the velocity of gases and airborne contaminants flowing towards the intake duct can exceed the forward momentum of gases and/or contaminants expelled by the patient so as to capture substantially all medical gases and/or contaminants in the vicinity of the face of the patient. 1. A method of evacuating medical gas or airborne contaminants from a vicinity of a face of a patient in a patient chair , the method comprising:providing an intake duct having one or more intake apertures defining an intake opening at a single intake location;supporting the intake duct adjacent to the patient chair such that the single intake location of the intake duct is offset to one side of a face of the patient; andapplying an exhaust flow to the intake duct at a flow rate through the intake duct greater than 200 cubic feet per minute such that a single flow is drawn across the face of the user and into the intake duct at the single intake location.2. The method according to including applying the exhaust flow to the gas intake duct so that the flow rate through the intake duct is between 200 and 250 cubic feet per minute.3. The method according to wherein the intake opening is defined at an open end of the intake duct and wherein the method includes supporting the intake duct to be spaced laterally to one side of the face of the patient such that the open end is directed in a forward direction that the patient is facing at a slope towards an area in front of the face of the ...

Optimized Breathing Assistance Device

A breathing assistance device with improved pressure characteristics provides a high level of CPAP per unit of supplementary respirable gas consumed while maintaining low CPAP fluctuations throughout the breath cycle utilizing a frustrum-shaped air channel to accelerate air flow. In some embodiments, a manometer is provided for monitoring pressure and/or a pressure relief valve is provided as a safety measure against overpressure delivered to a patient. In some embodiments, the device is disposable for one-time or single patient use. 1. A breathing assistance device comprising:a body having an interior wall defining an interior space;the interior wall having a narrow end and a wide end and having a cross-sectional area that is continuously smaller from the wide end to the narrow end;a patient connector interfaced to the narrow end, the patient connector adapted to be engaged directly with a patient's breathing tract or adapted to be engaged indirectly with the patient's breathing tract; anda gas jet having a jet orifice located at the wide end of the interior wall and aimed into the interior space, the gas jet adapted to be supplied with a gas from a source of the gas under pressure, the gas jet directing the gas through said interior space substantially along a central, lengthwise axis of the interior space towards the patient connector.2. The breathing assistance device according to claim 1 , where the interior wall is continuous without openings.3. The breathing assistance device according to claim 1 , where the cross-sectional area has a square cross-sectional shape or a hexagonal cross-sectional shape.4. The breathing assistance device according to claim 1 , where the cross-sectional area has an irregular cross-sectional shape.5. The breathing assistance device according to claim 1 , where the interior wall diverges at an angle greater than 0 degrees and less than 8 degrees from the central claim 1 , lengthwise axis.6. The breathing assistance device according ...

PORTABLE AND COMPACT SYSTEM FOR DELIVERY OF HUMIDIFIED HIGH FLOW NASAL CANNULA (HHFNC) THERAPY IN NEONATES AND INFANTS

A portable system for delivery of humidified high flow nasal cannula therapy includes a portable system housing, a respiratory circuit positioned within the housing comprising an ambient air conduit and an oxygen conduit merging downstream into a blended air conduit, an air pump positioned within the housing and connected to an upstream end of the ambient air conduit, configured to transfer ambient air into the ambient air conduit, an oxygen supply connection element connected to an upstream end of the oxygen conduit and configured to connect to an oxygen supply, a humidification chamber connected to a downstream end of the blended air conduit and an upstream end of an air output conduit, and a humidification chamber seating portion connected to the housing and configured to seat the humidification chamber, where the humidification chamber seating portion comprises a sterilization light source. 1. A portable system for delivery of humidified high flow nasal cannula therapy comprising:a portable system housing;a respiratory circuit positioned within the housing comprising an ambient air conduit and an oxygen conduit merging downstream into a blended air conduit;an air pump positioned within the housing and connected to an upstream end of the ambient air conduit, configured to transfer ambient air into the ambient air conduit;an oxygen supply connection element connected to an upstream end of the oxygen conduit and configured to connect to an oxygen supply;a humidification chamber connected to a downstream end of the blended air conduit and an upstream end of an air output conduit; anda humidification chamber seating portion connected to the housing and configured to seat the humidification chamber, comprising a sterilization light source.2. The system of further comprising:a first heat source positioned near the humidification chamber and configured to heat water stored in the humidification chamber.3. The system of claim 2 , wherein the first heat source comprises a ...