EXTRAKORPORALER CYCLE WITH HOSE FOR MEDICAL APPLICATIONS

DEVICE FOR TREATING HEART STOP

CONTAINER WITH INTEGRAL PUMPING JERK PLATE

sANG[...] A.

Pump for biological liquids.

HOSE-TYPE PUMP

MEDICAL PROCESSING DEVICE AND HOSE-TYPE SET FOR MEDICAL TREATING DEVICE, AND METHOD OF CHECKING PERISTALTIC HOSE PUMP

Fluid distribution module and extracorporeal blood circuit including such a module

Measuring the pressure in the extracorporeal circulation method

Appareils de thermothérapie extracorporelle

L'invention concerne un appareil de thermothérapie extracorporel pour le traitement d'un patient contre une maladie. L'appareil comprend un premier connecteur 1 par lequel un courant de sang est prélevé sur le corps d'un patient et un second connecteur 8 par lequel le sang est renvoyé au corps du patient. Entre ces deux connecteurs sont montés un moyen de chauffage 3 et un filtre 7. Dans des modes de réalisations préférés, le courant de sang est séparé en deux portions qui sont respectivement riche en érythrocytes et riche en leucocytes et chauffées séparément avant d'être réunies, et des produits chimiques de traitement sont ajoutés au sang en des points du circuit. Le traitement continu ainsi réalisé est utile pour stimuler le système immunitaire et/ou atténuer ou tuer des virus et cellules indésirables. L'invention s'applique au domaine médical.

HAEMODIALYSIS MACHINE

Low flow atrial-arterial shunt for pump-assisted myocardial revascularization without cardiopulmonary bypass

A low flow atrial-arterial shunt for pump-assisted myocardial revascularization without cardiopulmonary bypass comprises a short section of cardiopulmonary bypass tubing securely terminated at either end with a vented cannula adapter. The shunt is used in conjunction with venous and aortic cannulae and one of the conventional peristaltic pumps found in a medical facility's existing cardiopulmonary bypass machine. In use, e.g., for a left ventricular assist, the venous cannula is surgically attached to the left atrium, and the aortic cannula is attached to the aorta. Subsequently, the shunt is attached to the two cannulae and is primed to remove air. Next, the tubing is placed in the peristaltic pump, and the pump is activated, causing blood to flow from the left atrium, through the shunt—where it is propelled along by the pump—and into the aorta.

CATHETER SYSTEM FOR KARDIOPULMONÄREN BYPASS SUPPORT DURING A HEART INTERFERENCE

DEVICE AS A CHECK OF FLOW OF BLOOD IN A EXTRAKORPORALEN BLUTKREISLAUF

SYSTEM FOR COLLECTING BLOOD WITHOUT IT TO DAMAGING

CATHETER SYSTEM TO KARDIOPULMONAREN BYPASSPUMPUNTERSTÜZUNG DURING A HEART INTERFERENCE

GER�T FOR TREATING HERZSTILLST�NDEN

INTEGRATED BLOOD TREATMENT MODULE

... ²²²An integrated blood treatment module comprises a blood treatment device (1) ²having a housing (2) and a first end-cap (4) and a second end-cap (5) closing ²both ends of the housing (2). A pump hose (17) for a peristaltic pump has a ²first end (18) that is secured to the housing (2) and a second end (16) that ²is connected to a blood inlet port (15) of the first end-cap (4) so as to form ²a loop. A degassing device (30) is connected to the second end-cap (5). The ²degassing device (30), which, in use, is full of liquid, comprises a ²hydrophobic membrane through which bubbles and micro-bubbles escape the ²degassing device.² ...

EXTRACORPOREAL BLOOD CIRCULATION SYSTEM

SYSTEM FOR CORRECTING BIOLOGICAL LIQUID STI

Method for determining the pressure in extracorporeal circuit

Pump for biological liquids.

POMPE ROTATIVE A BOUDINS TANGENTIELS COEUR ARTIFICIEL AERIEN

La pompe rotative à boudins tangentiels ; sous forme de cîoeur artificiel aérien ; se compose d'un organe de compression et de capsulage, formé de trois rouleaux tronconiques i placés radialement, à égale distance l'un de l'autre ; au bout d'un arbre actionné par un moteur électrique e ; dont l'axe se situe à égale distance des deux conduits vasculaires parallèles, contre lesquels il tourne, en créant des étranglements mobiles ; de telle sorte que chaque rouleau sert de clapet de retenu à celui qui le précède ; tout en exerçant son rôle de piston, sur l'un et l'autre conduit ; dont l'un injecte le sang et l'autre l'extrait des poumons. (CF DESSIN DANS BOPI) ...

EXTRACORPOREAL THERMOTHERAPY DEVICES

Extra-corporeal blood circulation peristaltic pump - combines roller and low-vol. variable oscillatory helical pumps, with electric motor driven drum, in sequence

END-CAP ASSEMBLY WITH PUMP HOSE FOR A FILTER AND FILTER COMPRISING SUCH AN END-CAP ASSEMBLY

MINIMALLY INVASIVE VENTRICULAR ASSIST TECHNOLOGY AND METHOD

The present invention is a cardiac-assist device and technique used to assist in maintaining a patient's cardiac output when normal cardiac output is insufficient. The techniques of the invention allow the removal of blood directly or indirectly from a selected ventricle using an arterial or venous side approach. The use of a right side approach reduces the amount of work required and reduces the number of foreign objects present within the left side of heart as well as within the associated blood transferring conduits. The device of the invention includes a flexible catheter having a length, an open interior, an exposed proximate end and a distal end positionable within the patient's body. An external, supplemental assist mechanism is connected to one end of the flexible catheter. This mechanism receives blood from the arterial circulation and includes an internal pumping membrane. A flexible cannula is connected to an outlet of the rigid housing extends to a reinfusion port which is positionable ...

SYSTEM TO THE CORRECTION OF BIOLOGICAL LIQUID

DYNAMIC BRAKE WITH RECOIL CONTROL FOR HOSE PUMP

KARDIOPULMONALES LIFE SUPPORT SYSTEM

HOLLOW FIBER PLASMAPHERESIS MODULE AND PROCESS

INTEGRATED BLOOD TREATMENT MODULE

A Pump for Biological Fluids

PERISTALTIC PUMP WITH OCCLUSIVE INLET

A peristaltic pump having a pump conduit (12) with an occlusive inlet segment. The pump includes a frame (14) with rollers (22) carried by a rotor (16) and rotated by a motor (19). A flexible conduit having an inlet end (26) and an outlet end (28) is positioned around the rollers and includes an occlusive segment (38) and a non-occlusive segment (40). In its free condition, the occlusive segment is collapsed and the passageway through it substantially completely occluded when the pressure within the occlusive segment is equal to or less than the pressure acting on the outside of the occlusive segment. The non-occlusive segment is mildly biased to exhibit an inflated condition with an open passage when in its free condition with the pressure within the nonocclusive segment equal to pressure acting on the outside of the non-occlusive segment.

Dialysis machine and controller that is used for dialysis machine

PRESSURE DETECTION DEVICE FOR FLUID FLOW PATH

... [Problem] To provide a pressure detection device capable of suppressing sluggishness in fluid that has been caused to flow, capable of reducing the production cost and capacity of the fluid flow path, capable of suppressing errors that occur on the basis of individual differences between tubes to be squeezed or displacement detection means, and capable of more precise detection of fluid flow path pressure. [Solution] A pressure detection device for a fluid flow path, comprising: a displacement detection means (18) that detects displacement in the radial direction of a tube to be squeezed (1a); a pressure calculation means (20) capable of calculating removal blood pressure from said displacement; a closed flow path formation means capable of including an installation site for the displacement detection means (18) and of forming a closed flow path; a pressure alteration means capable of arbitrarily changing the pressure inside the closed flow path; a pressure detection means capable of detecting ...

METHOD AND DEVICES FOR MODULATING THE OPERATING POINT OF FLUID PUMPS IN MEDICAL TREATMENT DEVICES

The invention relates to the field of fluid pumps in medical treatment devices, in particular dialysis equipment. The aim of the invention is to design methods and devices in such a way that the working pressures or flow rates of the fluid pumps exhibit desired progressions, and in particular follow constant values or controlled profiles. Said aim is achieved in that the operating point of a peristaltic hose roller pump is set on the basis of the angle of rotation of the pump rotor or in that the operating point of a centrifugal pump is set following a profile.

Integrated blood treatment module

SYSTEM FOR MONITORING THE EXTRAKORPORALEN CIRCULATION AND THE INFUSION OF MEDICAL LIQUIDS DURING KARDIOPULMONALER BYPASS OPERATIONS

SYSTEM FOR EXTRAKORPORALEN BLOOD TREATMENT WITH REVERSIBLE BLOOD PUMPS

END CAP ARRANGEMENT WITH A HOSE FOR A PUMP FOR A FILTER AND FILTER WITH SUCH AN END CAP ARRANGEMENT

DEVICE FOR THE WITHDRAWAL OF A BIOLOGICAL LIQUID, TO WHICH A SOLUTION IN A DESIRED RELATIONSHIP IS ADDED

EQUIPMENT AND PROCEDURE AS THE MONITORING AND A CHECK THE EXTRAKORPORALEN OF FLOW OF BLOOD RELATIVE TO THE LIQUID STATUS OF A PATIENT

DEVICE FOR THE CONTROLLING OF FLOW OF BLOOD IN A EXTRAKORPORALEN CYCLE

Methods and system of generating rapidly varying pressure amplitudes in fluidic circuits in a dialysis treatment system

The present specification describes a modular, portable hemofiltration system, for providing improved clearance levels of blood toxins, which includes at least one roller pump that is designed and operated to generate a rapidly varying pressure profile of fluid within at least a blood circuit of the hemofiltration system.

END-CAP ASSEMBLY WITH PUMP HOSE FOR A FILTER AND FILTER COMPRISING SUCH AN END-CAP ASSEMBLY

... ²²²An end-cap assembly (1) for closing one end of a housing (2) of a filter ²comprises an end-cap (3) having an end wall; an inlet port (8) extending ²through the end wall for connection to a first end (4a) of a pump hose (4) of ²a peristaltic pump; and a first holder (5) for securing a second end (4b) of ²the pump hose (4). The inlet port (8) and the first holder (5) are arranged ²relative to each other so that the pump hose (4) forms a loop when the first ²end (4a) the pump hose (4) is connected to the inlet port (8) and. the second ²end (4b) of the pump hose (4) is secured by the holder (5).² ...

Extra-corporeal blood circulation peristaltic pump - combines roller and low-vol. variable oscillatory helical pumps, with electric motor driven drum, in sequence

DEVICE FOR TRANSPORTING A LIQUID IN TUBES, PARTICULARLY BLOOD IN CIRCUITS TUBULAR EXTRACORPOREAL, BY MEANS OF A PUMP FLEXIBLE TUBE

METHOD OF TREATING CARDIAC ARREST AND APPARATUS FOR SAME

A method of treating a subject in cardiac arrest comprises the steps of blocking the descending aorta (11) of the subject and perfusing the aortic arch (20) of the subject with a protective solution in an amount effective to deliver oxygen to the heart of the subject. The perfusing step is performed so that the protective solution infuses the aorta in a pulsatile rhythm. An apparatus (40) for carrying out this method includes a storage unit (41) for storing a protective solution, delivery apparatus (52) for delivering the protective solution to the aorta of the subject, wherein the delivery apparatus (52) is fluidly connected with the storage unit (41), and a pulsing device (65) connected with the delivery apparatus (52). The pulsing device (65) induces the protective solution to be delivered to the aorta in a pulsatile rhythm.

SYSTEMS AND METHODS FOR REDUCING PRESSURE AT OUTFLOW OF A DUCT

Various systems and methods are provided for reducing pressure at an outflow of a duct such as the thoracic duct or the lymphatic duct. A catheter system can include a catheter shaft configured to be at least partially implantable within a patient's vein, a flexible membrane attached to the catheter shaft, the flexible membrane being a collapsible, tube-like member having a lumen extending therethrough, and a single selectively deployable restriction member formed over a portion of the flexible membrane at substantially a midpoint between a proximal end of the flexible membrane and a distal end of the flexible membrane, the restriction member being configured to control a size of the lumen so as to direct a controlled volume of fluid from an upstream side of the restriction member to a downstream side the restriction member.

END-CAP ASSEMBLY WITH PUMP HOSE FOR A FILTER AND FILTER COMPRISING SUCH AN END-CAP ASSEMBLY

A METHOD AND MACHINE FOR TAKING BIOLOGICAL FLUID TO WHICH A SOLUTION IS ADDED IN ACCORDANCE WITH A DESIRED RATIO

The invention concerns a method of taking a biological fluid, in particular blood, with an anticoagulant and/or preservation solution added, in which the biological fluid is taken by natural flow and the anticoagulant and/or preservation solution is added by pumping, the said method making provision for measuring the flow of fluid taken and slaving the pumping speed to the measured flow, so as to obtain continuously during sampling a given ratio between the quantity of fluid taken and the quantity of anticoagulant and/or preservation solution added. The invention also concerns the sampling machine (1) and the bag system (2) for implementing the said method.

HEMODIALYSIS SYSTEM WITH MODULAR DIALYSATE MANIFOLD ASSEMBLY

SYSTEM FOR COLLECTION OF BLOOD WITHOUT DAMAGE

A system for the collection of physiological fluids includes a vacuum source (14) that is controlled to provide low vacuum as a function of whether fluids are entering the system. The suction wand and associated tubing are made of thin flexible materials, and the pressures employed do little damage to the collected fluids.

Mechanism for adjusting occlusion of a cardiac bypass roller pump, and a roller pump provided with the mechanism

TECHNIQUE FOR LOADING A PUMP HEADER WITHIN A PERISTALTIC PUMP OF A DIALYSIS MACHINE

A pivotable cover (54) secures a pump header or tubing (58) to a peristaltic pump of a dialysis machine (100). The cover includes an integral raceway (62) for engaging the pump header (58) as a rotor of the peristaltic pump rotates along the ingegral raceway. The cover is pivoted away form the dialysis machine to separate the raceway (62) from the rotor and provide substantial access for loading the pump header (58) about the rotor. The cover is then closed to secure the pump header in place and properly position the integral raceway in relation to the pump rotor. If the pump header (58) is connected to a blood tubing set (52), the cover (54) also secures the blood tubing set in position against the dialysis machine. A detachable hinge (140) allows the cover (54) to be completely detached from the dialysis machine (100).

AUTOMATIC DEVICE INTENDED FOR HOMOGENISATION OF THE BLOOD BOTH IN THE TUBING AND STORAGE BAG

The present invention relates to a device for homogenising blood in the tubing and storage bag, the function of which is to push automatically the blood in the tubing into the storage bag, and then to allow the already homogenised blood to return to the tubing. This device comprises: a two-roller system having an upper and a lower roller (1) that compress the tubing in the direction of the tubing diameter; a lifting system for moving the upper roller vertically, pressing the tubing so as to seal the same; a control system for automatically starting the movement of rotation of the lower roller (1) and the movement of the lifting system; two guides (30) for guiding the tubing during the process; a support for the blood bag (33); and components for protecting the equipment, such as the front cover (34), the rear cover (35), the outer sheath (29) for covering the device and the sheath (32) for protecting the rollers.

FLUID DISTRIBUTION MODULE AND EXTRACORPOREAL BLOOD CIRCUIT INCLUDING SUCH A MODULE

... ²²²A fluid distribution module (1) for causing and monitoring the circulation of ²fluids from and to a patient through an extracorporeal blood treatment device, ²comprises a degassing device (11) connected to a connecting structure (10). ²The degassing device (11) comprises a first chamber (12) having a lower inlet ²(13) for a liquid and a second chamber (14) having an upper opening (79) ²closed by a hydrophobic membrane (78) and an outlet (15) for discharging the ²liquid. The connecting structure (10) has at least a first and a second ²conduits (20, 21) defined therein, wherein the first conduit (20) comprises a ²first end for connection to a discharge tube (7) from the treatment device and ²a second end connected to the inlet (13) of the first chamber (12) of the ²degassing device (11), and the second conduit (21) comprises a first end ²connected to the outlet (15) of the second chamber (14) of the degassing ²device (11) and a second end for connection to a blood return tube (6) to a ...

FLUID DISTRIBUTION MODULE AND EXTRACORPOREAL BLOOD CIRCUIT INCLUDING SUCH A MODULE

BLOOD PUMP

SYSTEM FOR EXTRACORPOREAL CIRCULATION OF BLOOD

PUMP HAS BLOOD

DISPOSITIF DE POMPAGE DU SANG

DISPOSITIF POUR INJECTER LE SANG DANS LE CORPS D'UN MALADE DE FACON SYNCHRONE AVEC LES RESULTATS D'UN ELECTROCARDIOGRAPHE QUI COMPREND: A.UNE POMPE 1 POUR AMENER LE SANG; B.DES MOYENS D'INTRODUCTION D'ELEMENTS D'INFORMATIONS POUR INTRODUIRE DES DONNEES RELATIVES AUX OPERATIONS DE LADITE POMPE 1, TELLES QUE DECHARGE, DELAI, ACTIVATION DU MOTEUR, QUANTITE DE SANG; C.DES MOYENS DE DETECTION DES PICS R A PARTIR DES RESULTATS D'UN ELECTROCARDIOGRAPHE; D.DES MOYENS DE CALCUL; E.LES MOYENS D'ENTRAINEMENT DU MOTEUR SENSIBLES DUDIT SIGNAL INDIQUANT LADITE DUREE DES PICS R.

Method and device for establishing extracorporeal circulations, in phase with the cardiac cycle, from systolic of the pump

device for extracorporealextracorporeal treatment of the blood in the way of operation of needle only e method for the operation of a device for the extracorporealextracorporeal treatment of the blood

AUTOMATIC DEVICE FOR HOMOGENISING BLOOD IN THE TUBING AND STORAGE BAG

The present invention relates to a device for homogenising blood in the tubing and storage bag, the function of which is to push automatically the blood in the tubing into the storage bag, and then to allow the already homogenised blood to return to the tubing. This device comprises: a two-roller system having an upper and a lower roller (1) that compress the tubing in the direction of the tubing diameter; a lifting system for moving the upper roller vertically, pressing the tubing so as to seal the same; a control system for automatically starting the movement of rotation of the lower roller (1) and the movement of the lifting system; two guides (30) for guiding the tubing during the process; a support for the blood bag (33); and components for protecting the equipment, such as the front cover (34), the rear cover (35), the outer sheath (29) for covering the device and the sheath (32) for protecting the rollers.

METHOD OF TREATING CARDIAC ARREST

A method of treating a subject under cardiac arrest comprises the steps of: blocking the descending aorta (11) of the subject; then withdrawing blood from the subject; oxygenating the blood withdrawn from the subject; and perfusing the aortic arch (20) of the subject with oxygenated blood in an amount effective to deliver oxygen to the heart of the subject. This method enables the subject to continue to receive oxygenating material (i.e., blood in this instance) without the danger of volume overload that would be present if another oxygenated solution were continuously infused.

A METHOD AND MACHINE FOR TAKING BIOLOGICAL FLUID TO WHICH A SOLUTION IS ADDED IN ACCORDANCE WITH A DESIRED RATIO

The invention concerns a method of taking a biological fluid, in particular blood, with an anticoagulant and/or preservation solution added, in which the biological fluid is taken by natural flow and the anticoagulant and/or preservation solution is added by pumping, the said method making provision for measuring the flow of fluid taken and slaving the pumping speed to the measured flow, so as to obtain continuously during sampling a given ratio between the quantity of fluid taken and the quantity of anticoagulant and/or preservation solution added. The invention also concerns the sampling machine (1) and the bag system (2) for implementing the said method.

HEMODIALYSIS PATIENT DATA ACQUISITION, MANAGEMENT AND ANALYSIS SYSTEM

A hemodialysis patient data acquisition and management system resides on a host computer (90) which receives information from one or more non-invasive, optical blood monitors (14) associated with a hemodialysis system (12). When a patient (10) is undergoing hemodialysis treatment, a sensor assembly (34) monitors the patient's blood flowing through the hemodialysis system and a controller (35) for the blood monitor generates data which includes at least an identification code for the patient undergoing the treatment on the respective system, and non- invasively determined blood data taken at the onset of the scheduled treatment, such as initial Hgb, HCT, and SAT values. A host computer communicates with the one or more optical blood monitors, preferably via a wireless network, and the patient's session commencement data is downloaded to the host computer. The host computer includes a patient database (93), as well as screen displays (102) for displaying historical data for individual patients ...

The liquid flow path of the pressure detection device

DISPOSITIF POUR ASSURER UN ECHANGE GAZEUX ENTRE UN FLUIDE EN CIRCULATION ET UNE ATMOSPHERE EXTERIEURE

Pompage et échange gazeux. Le dispositif pour l'échange gazeux est, constitué par une enveloppe parcourue par un fluide et présentant des parois perméables aux gaz; l'enveloppe est composée d'un certain nombre de tuyaux 105 perméables aux gaz et tendus sur un rotor 101 d'une pompe à rouleaux. Techniques médicales.

Apparatus for circulation of blood outside the body

Pump for biological fluids, e.g. blood

L'invention concerne une pompe pour liquides biologiques, par exemple, pour la circulation du sang. La pompe selon l'invention comprend un corps (1) dans lequel sont placés au moins un tube élastique (3) à travers lequel passe le liquide biologique et une tête de travail (5) mise en rotation dans la direction de refoulement du liquide et comportant au moins un élément à galets (6) pour le serrage du tube (3), l'élément à galets (ou chaque élément à galets) comportant au moins deux galets (7, 8), montés l'un après l'autre de telle manière que le galet (7), précédent dans le sens de rotation de la tête de travail, de l'élément à galets laisse libre une section de passage du tube (3), plus grande que celle laissée par le galet suivant (8) de ce même élément à galets (6). La pompe comporte des moyens simples et commodes de réglage du serrage du tube (3) par les galets (7, 8) et assure la circulation du sang pratiquement sans destruction des cellules du sang.

DEVICE FOR ENSURING A GAS EXCHANGE BETWEEN A FLOWING FLUID AND AN EXTERNAL ATMOSPHERE

APPARATUS AND METHOD FOR THE TREATMENT OF BLOOD

Apparatus and method for performing extracorporeal treatment of a patient's blood for various conditions. The apparatus includes means by which an extracorporeal blood circuit is defined. The apparatus includes a module which integrates a number of components into a single unit. The various components include a pump (34'), heat exchanger (32), and means for sensing the temperature, pressure and flow rate of the blood as it passes through the extracorporeal circuit. An oxygenator (12) can also be included.

SYSTEMS AND METHODS FOR REDUCING PRESSURE AT AN OUTFLOW OF A DUCT

Various systems and methods are provided for reducing pressure at an outflow of a duct such as the thoracic duct or the lymphatic duct. A catheter system can include a catheter shaft configured to be at least partially implantable within a patient's vein, a flexible membrane attached to the catheter shaft, the flexible membrane being a collapsible, tube-like member having a lumen extending therethrough, and a single selectively deployable restriction member formed over a portion of the flexible membrane at substantially a midpoint between a proximal end of the flexible membrane and a distal end of the flexible membrane, the restriction member being configured to control a size of the lumen so as to direct a controlled volume of fluid from an upstream side of the restriction member to a downstream side the restriction member. 1. A catheter system comprising:a catheter shaft configured to be at partially implanted within a blood vessel of a patient;an impeller assembly disposed at a distal portion of the catheter shaft;a flexible membrane connected to the impeller assembly; anda selectively deployable restrictor attached to the distal portion via the flexible membrane, wherein deployment of the restrictor causes the flexible membrane to assume a tapered configuration, defining a tapered lumen extending through the restrictor, the flexible membrane, and at least a portion of the impeller assembly.2. The system of claim 1 , further comprising at least one inflation lumen extending at least partially through the catheter shaft claim 1 , the at least one inflation lumen being in fluid communication with the restrictor.3. The system of claim 2 , wherein the restrictor comprises a selectively expandable balloon coupled to an outer wall of the flexible membrane.4. The system of claim 1 , wherein the restrictor controls the size of the tapered lumen by constricting at least a portion of the flexible membrane when the restrictor is in an expanded configuration.5. The system of ...

ADMINISTERING DIALYSIS TREATMENT USING A HYBRID AUTOMATED PERITONEAL DIALYSIS SYSTEM

A dialysis machine (e.g., a peritoneal dialysis (PD) machine) can include a control unit configured to operate in a hybrid automated mode during a PD treatment. A processor in the control unit is configured to engage a pump during a fill phase of the PD cycle. The volume of fluid (e.g., dialysate) transferred to a patient line during the fill phase is monitored. After a dwell period, the pump is disengaged at the start of a drain phase of the PD cycle. Disengaging the pump can include: configuring valves of a disposable cassette to bypass the pump chambers of a disposable cassette; activating a bypass valve to shunt the patient line to a drain line; or moving a roller assembly of a peristaltic pump. The fluid transferred from the patient line to the drain line is monitored during the drain phase of the PD cycle. 1. A peritoneal dialysis (PD) system , comprising:a patient line;a drain line;a pump;one or more sensors; and engage the pump to pump dialysate through the patient line during a fill phase of a PD cycle; and', 'disengage the pump during a drain phase of the PD cycle, wherein the patient line is shunted to the drain line to allow fluid to bypass the pump during the drain phase of the PD cycle., 'a processor configured to2. The PD system of claim 1 , wherein the pump comprises one or more pistons configured to engage with one or more corresponding pump chambers formed in a disposable cassette connected to the patient line and the drain line.3. The PD system of claim 2 , wherein disengaging the pump comprises configuring one or more valves of the cassette to form a fluid path in the cassette that connects the patient line to the drain line claim 2 , and wherein the fluid path does not include any of the one or more pump chambers.4. The PD system of claim 1 , wherein the pump comprises a peristaltic pump.5. The PD system of claim 4 , wherein disengaging the pump comprises moving a roller assembly of the peristaltic pump away from a fixed surface such that a ...

Blood circulation system

An artificial heart and lung apparatus includes a roller pump; a blood removal line; a first blood transfer line; a blood removal rate sensor; a control unit that performs the linked control of the roller pump in correspondence with a blood removal rate; and a blood transfer rate adjustment unit that instructs the roller pump to transfer a blood transfer rate. The blood transfer rate adjustment unit includes an operation amount input unit to which an operation amount from an arbitrary circumferential position can be input, and which outputs a pulse signal according to the input operation amount. A counter adds and subtracts pulse signals output from the operation amount input unit, and outputs a resultant as blood transfer rate adjustment data. The counter performs a counting operation with respect to the circumferential position of the operation amount input unit when blood transfer control transitions to the normal control.

METHOD AND DEVICE FOR COLLECTING HUMOR OF ORGANISM WITH SOLUTION ADDED AT DESIRED RATIO

PROBLEM TO BE SOLVED: To provide a method of collecting a sample, capable of continuously obtaining a prescribed ratio of the quantity of collected humor to the quantity of added coagulation preventer solution and/or preservation solution while the sample is collected. SOLUTION: In the method for collecting humor of an organism, especially blood in which the humor of the organism is collected with the natural flow and the coagulation preventer solution and/or preservation solution is added by pumping. In the method, preparation for measuring the flow rate of the collected humor is made and the pumping speed is made subject to the measured flow rate so that the prescribed ratio of the quantity of the collected humor to the quantity of the added coagulation preventer solution and/or preservation solution can be continuously obtained while the sample is collected. COPYRIGHT: (C)2004,JPO&NCIPI ...

Device and method for regulating and specifying the pump rate of blood pumps

The invention pertains to the regulation and specification of pump rates of blood pumps. The invention relates to a device and a method in which blood pressures are monitored upstream and/or downstream of the blood pump, and said values or another value formed from said values is compared with a threshold which depends on an operating parameter of the blood pump or a pump parameter of the blood pump. When the threshold is violated, the pump rate of the blood pump is changed or a new pump rate is determined such that the threshold is no longer violated or the degree of the violation is reduced.

PULSATILE FLOW DELIVERY APPARATUS

A pulsatile flow delivery apparatus includes a pump, an elastic tube, an occlusive clamp and a control device. The elastic tube is connected to the pump, and at least a part of it is made of a material with a rubber hardness code of no greater than 70.degree. (JIS). The clamp is placed on the outlet of the tube for opening and closing its outlet, and a control device is connected to the clamp for controlling the timing for opening and closing of the clamp to convert the continuous flow produced by the pump into a pulsatile flow. Another pulsatile flow delivery apparatus includes a horse shoe shaped raceway, a tube of a material with a rubber hardness code of no greater than 70.degree. (JIS), a milking mechanism, an occlusive clamp and a control device. The tube is disposed along the raceway. The milking mechanism has a pivot shaft, a rotating arm fixedly secured to the shaft and one milking roller rotatably mounted on one end of the rotating arm. The timing of opening and closing of the ...

A PUMP FOR BIOLOGICAL FLUIDS

The invention relates to a pump for biological fluids, for example for blood transference by pump. The pump according to the invention comproses a housing (1) in which there are placed at least one resilient tube (3) for passing biological fluid, and an operating head (5) rotated in the direction of fluid transference and including at least one roller member (6) to bear against the tube (3), said roller member (or each roller member) comprising at least two rollers (7,8) positioned in series so that the roller (7) of said roller member which is preceding in the direction of the operating head rotation allows greater tube (3) aperture than does the roller (8) of the same member (6) that follows. The pump has simple and convenient means for adjusting the degree of compressing the tube (3) by the rollers (7,8) and ensures blood transfusion causing practically no damage to the blood cells. (Fig.1) ...

BLOOD OXYGENATION SYSTEM AND RESERVOIR AND METHOD OF MANUFACTURE

A novel integral cardiotomy/venous blood reservoir (100; 200), blood oxygenator and heat exchanging device (24; 26; 40; 52; 300; 400; 502), method of making a blood oxygenating and heat exchanging device and an extracorporeal circulatory support circuit. The reservoir (100; 200) includes a novel blood defoaming and filtering chamber (106) closely receiving filtering and defoaming media (122; 124). The blood oxygenating and heat exchanging device (24; 26; 40; 52; 300; 400; 502) includes thermal formed housing portions (306; 308; 406; 408), and a heat exchanging barrier (312; 412), blood oxygenating medium (310; 410) and/or filtering medium (413), which are sealed by potting compound (326; 426) at one time. The oxygenating medium (310; 410) comprises a hollow fiber type medium (310; 410), with its ends left open to be sealingly mounted in a gas path by a novel mounting bracket (36; 48; 76).

PERISTALTIC PUMP HAVING ROTATORY PLAY

Blood pump device

Peristaltic pump

PROCESS AND MACHINE OF BIOLOGICAL TAKING AWAY OF FLUID TO WHICH A SOLUTION IS AJOUTEE ACCORDING TO A DESIRED RATIO

L'invention concerne un procédé de prélèvement d'un fluide biologique, notamment sanguin, additionné d'une solution anticoagulante et/ou de conservation, dans lequel le fluide biologique est prélevé par écoulement naturel et la solution anticoagulante et/ou de conservation est additionnée par pompage, ledit procédé prévoyant de mesurer le débit de fluide prélevé et d'asservir la vitesse de pompage au débit mesuré, de sorte à obtenir en continu lors du prélèvement un ratio déterminé entre la quantité de fluide prélevé et la quantité de solution anticoagulante et/ou de conservation additionnée. L'invention concerne également la machine de prélèvement (1) et le système à poches (2) permettant de mettre en oeuvre ledit procédé.

PUMP HAS BLOOD

ENHANCED INTRA-AORTIC BALLOON ASSIST DEVICE

... la présente invention concerne un dispositif amélioré de circulation intra-aortique destiné à des patients afin d'améliorer en permanence un écoulement sanguin des autres artères avec l'aorte. Ce dispositif comprend un moyen interne gonflant (23) placé dans l'aorte du patient, et un moyen externe gonflant (25) placé à l'extérieur du patient. Le moyen d'inflation interne peut être un ballon couplé à une extension creuse qui est couplée, de manière opératoire, à un moyen de communication sanguine (35). Dans une réalisation, le moyen de communication sanguine peut être un premier tube cathéter creux. Le moyen externe gonflant peut être un ballon extérieur couplé à une extension creuse traversant le centre du ballon et prolongeant un second tube cathéter creux. Le moyen de communication sanguine est couplé aux moyens interne et externe gonflants, ce qui permet au sang de l'aorte de communiquer avec le moyen secondaire gonflant.

Pump

Embodiments of pumps are described herein that may be used as peristaltic pumps. The pumps may include features that provide for quiet operation as well as automatically loading of tubing. Embodiments may be implemented in blood separation systems. 1. A pump , the pump comprising:a first portion that rotates around an axis of rotation when the pump is turned on, the first portion comprising at least one roller that when tubing is loaded into the pump, the at least one roller engages the tubing; and a raceway, wherein when the tubing is loaded into the pump and the pump is turned on, the at least one roller engages the tubing and the tubing is pressed against the raceway; and', 'an inner track, wherein at least a portion of the inner track comes in contact with the at least one roller when the at least one roller is not engaged with the tubing., 'a second portion comprising2. The pump of claim 1 , wherein the first portion further comprises a spring that presses on the at least one roller to move the at least one roller radially outward.3. The pump of claim 2 , wherein the track limits the amount that the roller may be moved radially outward away from the axis of rotation by the spring.4. The pump of claim 1 , wherein the at least one roller comprises a top edge and a bottom edge and at least one of the top edge and the bottom edge is rounded.5. The pump of claim 1 , wherein at least a portion of the track is flush with a portion of the raceway.6. The pump of claim 1 , wherein the track extends around the entire length of the raceway.7. The pump of claim 1 , wherein the track extends around only a portion of a length of the raceway.8. The pump of claim 1 , further comprising a first transition zone and a second transition zone.9. The pump of claim 8 , wherein when tubing is loaded into the pump and the pump is turned on claim 8 , the at least one roller engaging the tubing in the first transition zone.10. The pump of claim 9 , wherein when tubing is loaded into the ...

FLUID DISTRIBUTION MODULE AND EXTRACORPOREAL BLOOD CIRCUIT INCLUDING SUCH A MODULE

Peristaltic pumps

A peristaltic pump (10) comprises a drivable rotor (14), having at least one pressing member (15), and a cylindrical stator (12) in which the rotor (14) is rotatable. Flexible tubing (22), having an inlet side (24) and an outlet side (26), extends circumferentially around the cylindrical stator (12) against an inner wall (12a). The peristaltic pump (10) includes a radially deformable ring (28) positioned between the rotor (14) and the circumferentially extending flexible tubing (22). The ring (28) is deformed by the pressing member (15) upon rotation of the rotor (14) and this compresses the flexible tubing (22) against the inner wall (12a) of the cylindrical stator (12) to convey liquid along the flexible tubing (22). The radially deformable ring (28) includes a ring anchor (30) which prevents rotation of the radially deformable ring (28) during rotation of the rotor (14).

CONTAINER WITH INTEGRAL PUMP PLATEN

A container (400) for the collection of fluids in a vacuum system includes upper and lower chambers (402, 404). Fluids are admitted to the upper chamber (402) to form a vortex and separate fluid and debris from air. The fluids then pass to the lower chamber (404) through a filter (412). A discharge tube (428) is connected to the lower chamber (404) to allow the accumulated fluids to be pumped from the container (400). The bottom of the lower chamber (404) includes a recess (430) that forms a platen for a roller pump, and a discharge tube (428) is located adjacent the platen whereby rollers (426) engage the tube (428) and platen upon installation of the chamber (400) on a base. A second port (418) is provided to the upper chamber (402) for admission of a second fluid such as an anticoagulant.

Appliances for extracoporeal heat therapy

DEVICE FOR TRANSPORTING A LIQUID IN TUBES, PARTICULARLY BLOOD IN CIRCUITS TUBULAR EXTRACORPOREAL, BY MEANS OF A PUMP FLEXIBLE TUBE

DEVICE OF PUMPING OF BLOOD

EQUIPMENT FOR CONTROLLING BLOOD FLOW IN AN EXTRACORPOREAL BLOOD CIRCUIT

Systems and methods for reducing pressure at outflow of a duct

Various systems and methods are provided for reducing pressure at an outflow of a duct such as the thoracic duct or the lymphatic duct. A catheter system can include a catheter shaft configured to be at least partially implantable within a patient's vein, a flexible membrane attached to the catheter shaft, the flexible membrane being a collapsible, tube-like member having a lumen extending therethrough, and a single selectively deployable restriction member formed over a portion of the flexible membrane at substantially a midpoint between a proximal end of the flexible membrane and a distal end of the flexible membrane, the restriction member being configured to control a size of the lumen so as to direct a controlled volume of fluid from an upstream side of the restriction member to a downstream side the restriction member.

Pump apparatus and methods for expression of human breast milk

Improved devices, systems and methods for the expression of milk from a breast are disclosed herein. A device for expression of milk may comprise a peristaltic pump configured to move a fluid to or from a breast interface, so as to apply pressure at the breast interface and thereby express milk from the breast. The peristaltic pump can be removably coupled to a tube carrying the fluid, so as to maintain a separation between the peristaltic pump and the fluidly coupled components of the device. A device for expressing breast milk may further comprise an adjustable breast interface configured to engage and fluidly seal against the human breast. The adjustable breast interface may be manually or automatically adjustable to fluidly seal against a plurality of sizes or shapes of human breasts.

DIALYSIS SYSTEM HAVING INDUCTIVE HEATING

A dialysis fluid system includes a dialysis fluid inlet; a dialysis fluid outlet; a pump positioned and arranged to pump dialysis fluid through the dialysis fluid inlet and the dialysis fluid outlet; and an inductive heater located between the dialysis fluid inlet and the dialysis fluid outlet, the inductive heater including a fluid flowpath positioned and arranged to receive non-heated dialysis fluid from the dialysis fluid inlet and to output heated dialysis fluid to the a dialysis fluid outlet, a conductive heater element located within the fluid flowpath so as to be or act as a secondary coil of a transformer, and a primary coil of the transformer located outside of the fluid flowpath and positioned so as to magnetically induce a current into the conductive heater element, causing the conductive heater element and surrounding fluid to heat. 1. A dialysis fluid system comprising:a dialysis fluid inlet;a dialysis fluid outlet;a pump positioned and arranged to pump dialysis fluid through the dialysis fluid inlet and the dialysis fluid outlet; and a fluid flowpath positioned and arranged to receive non-heated dialysis fluid from the dialysis fluid inlet and to output heated dialysis fluid to the dialysis fluid outlet,', 'a conductive heater element located within the fluid flowpath so as to be or act as a secondary coil of a transformer, and', 'a primary coil of the transformer located outside of the fluid flowpath and positioned so as to magnetically induce a current into the conductive heater element, causing the conductive heater element and surrounding dialysis fluid to heat., 'an inductive heater located between the dialysis fluid inlet and the dialysis fluid outlet, the inductive heater including'}2. The dialysis fluid system of claim 1 , wherein the fluid flowpath and the conductive heater element are located within a heater housing in fluid communication with the dialysis fluid inlet and the dialysis fluid outlet.3. The dialysis fluid system of claim 2 , ...

COIL PARAMETERS AND CONTROL

Present embodiments are directed to measuring and calculating parameters to control and monitor a power transfer in an implanted medical device. The medical device may be implanted in a subject and typically includes an artificial heart or ventricle assist device. The system measures parameters and uses the parameters to calculate a coupling coefficient for coils that transfer power between an external primary and an implanted secondary. The system uses the calculated coupling coefficient to estimate heat flux being generated in the system. Based on the level heat flux detected, the system may issue alerts to warn the subject or control actions to mitigate the effects of the heat flux. 1. A method of monitoring power transfer between a primary and secondary of a transcutaneous energy transfer system , comprisingmeasuring at least one system status parameter;performing calculations using the measured status parameters; andperforming a control operation based on the calculations.2. The method of claim 1 , wherein the at least one system status parameter includes a regulation timing parameter.3. The method of claim 2 , wherein measuring the regulation timing parameter includes measuring a primary current signal that indicates the timing of the voltage regulation in the secondary.4. The method of claim 2 , wherein measuring the regulation timing parameter includes measuring a primary coil voltage signal that indicates the timing of the voltage regulation in the secondary.5. The method of claim 2 , wherein measuring the regulation timing parameter includes measuring a primary capacitor voltage signal that indicates the timing of the voltage regulation in the secondary.6. The method of claim 1 , wherein the at least one system status parameter includes a primary current signal.7. The method of claim 6 , wherein measuring the primary current signal includes measuring a current in the primary through the operation of a current probe arranged in series with a primary coil.8. ...

Implanted Extracardiac Device for Circulatory Assistance

This invention is an implanted extracardiac device for supplementing blood circulation which comprises an implanted blood flow lumen, a blood flow increasing mechanism, and a control unit. Its design improves blood circulation when the blood flow increasing mechanism is operating, without hindering native blood flow when the mechanism is not operating. This device improves circulation without intruding on cardiac tissue or weakening the heart by completely supplanting cardiac function. Also, since the device allows native blood flow when the blood flow increasing mechanism is not in operation, it requires less power and can enable more patient mobility. 1. An implanted extracardiac device for supplementing blood circulation comprising:at least one implanted blood flow lumen, wherein this implanted blood flow lumen is configured to be implanted within a person's body so as to receive blood inflow from a blood vessel at an upstream location with respect to the natural direction of blood flow, wherein this implanted blood flow lumen is configured to discharge blood into a blood vessel at a downstream location with respect to the natural direction of blood flow, wherein this implanted blood flow lumen has a longitudinal axis spanning from the upstream location to the downstream location, wherein this implanted blood flow lumen has a cross-sectional area through which blood can flow which is substantially perpendicular to the longitudinal axis, and wherein a minimum cross-sectional flow area is defined as the minimum unobstructed cross-sectional area through which can blood flow from the upstream location to the downstream location;a blood flow increasing mechanism, wherein this blood flow increasing mechanism is configured to be implanted within a person's body, wherein this blood flow increasing mechanism is configured to increase the flow of blood from the upstream location to the downstream location when the blood flow increasing mechanism is in operation by ...

Blood Purification Apparatus and Method of Estimating Patient's State of Nutrition On Blood Purification Apparatus

A blood purification apparatus that accurately calculates the colloid osmotic pressure of a patient's blood. A dialyzer included in the blood purification apparatus has thereinside blood flow routes and dialysate flow routes that are separated from each other by hollow fibers. An ultrafiltration pump draws out water from the blood in the blood flow routes through the hollow fibers into the dialysate flow routes. Four detecting units measure the pressures of liquid flowing into the blood flow routes, the liquid discharged from the blood flow routes, dialysate flowing into the dialysate flow routes, and the dialysate discharged from the dialysate flow routes. The pressures at the four positions, the transmembrane pressure difference can be calculated. The blood flow routes are filled with a priming solution, and the transmembrane pressure difference (TMPa) is measured. Subsequently, the blood flow routes are filled with the patient's blood, and the transmembrane pressure difference (TMPb) is measured. Referencing TMPa and TMPb, the colloid osmotic pressure of the patient's blood can be calculated. Referencing colloid osmotic pressure, the plasma total protein can be calculated. Referencing plasma total protein, the patient's state of nutrition can be estimated. 1. A blood purification apparatus that includesa blood circuit including an arterial blood circuit and a venous blood circuit and that allows a patient's blood to extracorporeally circulate from a distal end of the arterial blood circuit to a distal end of the venous blood circuit;a blood purifier provided between the arterial blood circuit and the venous blood circuit and that purifies the blood flowing through the blood circuit, the blood purifier having a blood flow route through which the blood extracorporeally circulating through the blood circuit flows and a dialysate flow route through which dialysate flows, the blood flow route and the dialysate flow route being separated from each other by a blood ...

Medical Peristaltic Pump

A peristaltic pump includes a driver, a pump body, a hose, a rotor and a connecting member. The driver includes a supporting shaft. The pump body includes a chamber housing the rotor. The hose is assembled to an internal side of a wall of the chamber. The connecting member connects the driver with the rotor, and is received in the chamber. The rotor is configured to sequentially squeeze the hose to cause medium in the hose to flow. The connecting member and the rotor rotate about and are supported by the supporting shaft. The medical peristaltic pump has a simple structure and is easy to operate.

Blood Purification Apparatus

A blood purification apparatus is provided in which parameters related to ultrafiltration can be changed assuredly and smoothly at the restart of blood purification treatment suspended with the release of the patient from a blood circuit during the blood purification treatment. A blood purification apparatus in which the blood purification treatment that is suspended with a release of the patient from a blood circuit during the blood purification treatment is restartable includes a calculating device capable of calculating a variable amount related to a patients body weight that changes with the suspension and restart of the blood purification treatment; and a changing device capable of changing, in accordance with the variable amount calculated by the calculating device, a parameter related to ultrafiltration that is set by a setting device. 1: A blood purification apparatus comprising:a blood circuit through which blood of a patient is allowed to extracorporeally circulate;a blood purifier for giving blood purification treatment by purifying the blood of the patient that extracorporeally circulates through the blood circuit;an ultrafiltration device capable of performing ultrafiltration for removing water from liquid in the blood circuit;an infusion device capable of performing fluid infusion or blood return by introducing liquid into the blood circuit;a setting device capable of setting a parameter related to ultrafiltration performed by the ultrafiltration device; anda control device that controls the ultrafiltration device in accordance with the parameter that is set by the setting device,wherein the blood purification treatment that is suspended with a release of the patient from the blood circuit during the blood purification treatment is restartable,wherein the blood purification apparatus further includesa calculating device capable of calculating a variable amount related to the patient's body weight that changes with the suspension and restart of the ...

Treating congestive heart failure

This document relates to materials and methods for circulatory bypass of a ventricle in the heart of a mammal. For example, materials and methods for bypassing a permanently or temporarily impaired left ventricle in the heart of a mammal (e.g., a human) are provided.

Coil parameters and control

Present embodiments are directed to measuring and calculating parameters to control and monitor a power transfer in an implanted medical device. The medical device may be implanted in a subject and typically includes an artificial heart or ventricle assist device. The system measures parameters and uses the parameters to calculate a coupling coefficient for coils that transfer power between an external primary and an implanted secondary. The system uses the calculated coupling coefficient to estimate heat flux being generated in the system. Based on the level heat flux detected, the system may issue alerts to warn the subject or control actions to mitigate the effects of the heat flux.

CATHETER DEVICE, COMPRISING A VALVE FOR CONTROLLING A FLUID FLOW THROUGH A CATHETER

The invention relates to a catheter device () comprising a catheter () for insertion into a living being and at least one lumen () for guiding a fluid flow within a section of the catheter device, and comprising a valve for controlling a fluid flow, in particular through a catheter, having a valve control chamber (), into which an inlet opening () of an inlet channel () and an outlet opening () of an outlet channel () open, and further having a closure element () which can be moved in the valve control chamber () in a controlled manner and which, in at least a first position (I), closes the outlet opening (), in at least a second position (II) closes the inlet opening (), and which, in at least a third position (III), keeps open a connecting channel between the inlet opening () and the outlet opening (), a valve train (A, A′, B, B′, ) being provided and optionally moving the closure element () to at least the first, second or third position, and the at least one lumen () being fluidically connected to the inlet channel or the outlet channel. 1. A catheter device , comprising:a catheter;a pump connected to the catheter;at least one lumen extending through the catheter, the at least one lumen configured to direct a fluid flow within the catheter device; anda valve operatively coupled to the catheter to control the fluid flow through bearing of the pump, the valve including a valve controller having a feed opening and a discharge opening that are separated by a connection channel;a feed channel which passes through the valve controller and exits the valve controller through the feed opening; anda discharge channel which passes through the valve controller and exits the valve controller through a discharge opening;a moveable closure membrane which is movable in a controlled manner in the valve controller, the moveable closure membrane configured to take a first position in which the discharge opening is closed, a second position in which the feed opening is closed, and ...

APPARATUS AND METHOD FOR DETERMINING A PARAMETER INDICATIVE OF THE PROGRESS OF AN EXTRACORPOREAL BLOOD TREATMENT

An apparatus and process for extracorporeal treatment of blood () comprising a treatment unit (), a blood withdrawal line (), a blood return line (), a preparation line () and a spent dialysate line (). A control unit () is configured to calculate values of a parameter relating to treatment effectiveness based on measures of lactate or citrate or acetate concentration in the spent dialysate line (). 128-. (canceled)29: An apparatus for extracorporeal treatment of blood comprising:a preparation line having one end configured for being connected to an inlet of a secondary chamber of a treatment unit, a semi-permeable membrane separating said secondary chamber from a primary chamber of the same treatment unit;a spent dialysate line having one end configured for being connected to an outlet of said secondary chamber; and causing a fresh treatment liquid to flow in the preparation line towards the secondary chamber at a flow rate, the treatment liquid including lactate;', 'causing a used treatment liquid to flow in the spent dialysate line at a flow rate;', 'receiving one or more measured values of a parameter related to the concentration of lactate in the used treatment liquid flowing in the spent dialysate line; and', said one or more measured values of the parameter related to the concentration of lactate of the used treatment liquid; and', 'at least one of: said flow rate of fresh treatment liquid and said flow rate of used treatment liquid., 'computing at least one value of a parameter indicative of the effectiveness of the extracorporeal blood treatment based on], 'a control unit configured for commanding execution of the following steps30: The apparatus according to claim 29 , wherein the control unit is further configured for receiving one or more values of a parameter related to the concentration of lactate of the fresh treatment liquid flowing in the preparation line.31: The apparatus according to claim 30 , wherein the step of receiving one or more values of a ...

AUTO LOADING AND UNLOADING PERISTALTIC PUMP APPARATUS

A peristaltic pumping apparatus for use in blood processing procedures, comprising: a pump rotor rotatable about a rotational axis and a pump raceway circumferentially spaced about the axis; a pump cap disposed atop the pump rotor, the pump cap having a finger configured to engage a tubing loop of a length of tubing at a time of loading the tubing and guide the tubing loop within the raceway along the length of the tubing loop; and wherein the pump cap further comprises a tensioning wall disposed laterally opposite the finger, the tensioning wail configured to engage a length of the tubing loop at a time of unloading the tubing and provide tension to the tubing length as the tubing loop exits the raceway. 1. A peristaltic pumping apparatus for use in blood processing procedures , comprising:a pump rotor rotatable about a rotational axis and a pump raceway circumferentially spaced about the axis;a pump cap disposed atop the pump rotor, the pump cap having a finger configured to engage a tubing loop of a length of tubing at a time of loading the tubing and guide the tubing loop within the raceway along the length of the tubing loop; andwherein the pump cap further comprises a tensioning wall disposed laterally opposite the finger, the tensioning wall configured to engage a length of the tubing loop at a time of unloading the tubing and provide tension to the tubing length as the tubing loop exits the raceway.2. The peristaltic pumping apparatus of claim 1 , wherein the pump rotor includes a set of diametrically spaced rollers.3. The peristaltic pumping apparatus of claim 1 , wherein the finger extends radially outward from the rotational axis of the pump rotor beyond a circumference of the pump rotor.4. The peristaltic pumping apparatus of claim 1 , wherein the tensioning wall has a contour that generally follows a circumference of the rotor.5. (canceled)6. The peristaltic pumping apparatus of claim 1 , wherein the raceway comprises a space between the pump rotor and ...

Medical Treatment Device And Hose Set For A Medical Treatment Device And Method For Monitoring A Peristaltic Hose Pump

The invention relates to a medical treatment apparatus comprising a tube set , a peristaltic pump for conveying fluid, and a monitoring apparatus for monitoring the occlusion of the positive displacement elements A, B of the peristaltic pump. In addition, the invention relates to a tube set for a medical treatment apparatus, and to a method for monitoring the occlusion of the occlusion elements of a peristaltic pump for conveying a fluid for a medical treatment apparatus. The invention is based on the fact that the occlusion of the positive displacement elements A, B of the peristaltic pump is monitored in order to monitor the fluid flow in the hose line . For this purpose, the electrical resistance or a variable which correlates with the electrical resistance is measured between a first and a second electrode A, B, the first electrode A being arranged on the hose line upstream of the occlusion elements of the peristaltic pump and the second electrode being arranged on the hose line downstream of the occlusion elements such that an electrical contact is produced between the first and second electrode A, B and the fluid flowing in the hose line . The electrodes A, B are preferably integral component parts of a connecting piece , by means of which the hose segment A to be inserted into the peristaltic pump is fixed in the form of a loop. 1. A medical treatment apparatus comprisinga tube set which comprises one or more hose lines,a peristaltic pump for conveying fluid, which comprises a receiving unit having a pump bed for inserting a hose segment of the hose line, and movable occlusion elements for acting on the hose segment inserted into the pump bed, anda monitoring apparatus for monitoring the occlusion of the occlusion elements of the peristaltic pump,characterised in that the monitoring apparatus comprises:a device for measuring the electrical resistance or a variable which correlates with the electrical resistance between a first and a second electrode, the ...

APPARATUS FOR BLOOD CONCENTRATION

A disposable blood transfer conduit is used in association with a pump drive unit, a blood collection vessel and a blood concentration device. The blood transfer conduit comprises a blood transfer tube () and a peristaltic pump element () having an enclosed housing mounted about the blood transfer tube (). At least part of the blood transfer tube () is resiliently deformable and extends through the enclosed housing of the peristaltic pump element (). The disposable blood transfer conduit may be used in the concentration of blood for autologous blood transfusion. 1. A disposable blood transfer conduit for use in association with a pump drive unit , a blood collection vessel and a blood concentration device ,wherein the conduit comprises a blood transfer tube and a peristaltic pump element having an enclosed housing mounted about the blood transfer tube, 'wherein at least part of the blood transfer tube is resiliently deformable and extends through the enclosed housing of the peristaltic pump element, and wherein the housing of the peristaltic pump element is adapted for releasable engagement, in use, with the pump drive unit to convey blood from the blood collection vessel to the blood concentration device.', 'a first end of the blood transfer conduit being adapted for connection, in use, to the blood collection vessel and a second end of the blood transfer conduit being adapted for connection, in use, to the blood concentration device,'}2. The disposable blood transfer conduit of claim 1 , wherein the blood transfer tube is formed from plastics material.3. The disposable blood transfer conduit of claim 1 , wherein the peristaltic pump element is such that claim 1 , in use claim 1 , the blood transfer tube is only partially occluded and not fully occluded.4. The disposable blood transfer conduit of claim 1 , wherein the housing of the peristaltic pump element defines a circular cavity with two openings that permit the housing to be fitted about the blood transfer ...

Mechanism for adjusting occlusion of a cardiac bypass roller pump, and a roller pump provided with the mechanism

A mechanism for adjusting occlusion of a roller pump is described, wherein the mechanism is provided with: an elongated rod member oriented on a central axis of a pump head of the roller pump; and a drive member attached to the elongated rod member so as to move along the elongated rod member between a first position and a second position, wherein the drive member is connected to each roller block of a pump rotor of the pump head so that movement of the drive member by constant increments along the elongated rod member causes non-uniform and/or non-linear incremental movement of each roller block in a direction radial to the central axis of the pump head.

SYSTEMS AND METHODS FOR PRIMING HEMODIALYSIS USING MULTIPLE FLUID SOURCES

A hemodialysis system configured to purge air from a blood circuit comprising: a dialyzer; a dialysis fluid circuit operable with the dialyzer via dialysis fluid inlet and outlet lines; the blood circuit operable with the dialyzer and including an arterial line, a venous line, a blood pump operable with the arterial line upstream of the dialyzer, and a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged using dialysis fluid or other physiologically acceptable fluid pumped by at least one of the fresh or used dialysis fluid pumps from the dialysis fluid circuit, through the dialyzer, into the blood circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly into the blood circuit. 1. A hemodialysis system configured to purge air from a blood circuit , the hemodialysis system comprising:a dialyzer; a fresh dialysis fluid pump,', 'a used dialysis fluid pump,', 'a first balancing unit including (i) a first fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a first used dialysis fluid chamber operable with the used dialysis fluid pump, and', 'a second balancing unit including (i) a second fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a second used dialysis fluid chamber operable with the used dialysis fluid pump;, 'a dialysis fluid circuit in fluid communication with the dialyzer via dialysis fluid inlet and outlet lines, the dialysis fluid circuit including'} an arterial line for removing blood from a patient and delivering the blood to the dialyzer,', 'a venous line for returning blood from the dialyzer to the patient,', 'a blood pump operable with the arterial line upstream of the dialyzer,', 'a physiologically acceptable fluid source in fluid communication ...

WEIGHT CONTROLLED AND/OR SORBENT HYBRID BLOOD AND PERITONEAL DIALYSIS TREATMENT SYSTEMS AND METHODS

A hybrid hemodialysis (“HD”)/peritoneal dialysis (“PD”) system includes: a reservoir; a weigh scale operably coupled with the reservoir; and at least one controller programmed to run (i) an HD treatment in which blood is pumped to a blood compartment of a dialyzer, fresh HD dialysis fluid is pumped to a dialysis fluid compartment of the dialyzer, and used HD dialysis fluid is pumped from the dialysis fluid compartment of the dialyzer to the reservoir, and at a different time (ii) a PD treatment in which fresh PD dialysis fluid is pumped to a patient and used PD dialysis fluid is pumped from the patient to the reservoir. 1. A hybrid hemodialysis (“HD”)/peritoneal dialysis (“PD”) system comprising:a reservoir;a weigh scale operably coupled with the reservoir; andat least one controller programmed to run (i) an HD treatment in which blood is pumped to a blood compartment of a dialyzer, fresh HD dialysis fluid is pumped to a dialysis fluid compartment of the dialyzer, and used HD dialysis fluid is pumped from the dialysis fluid compartment of the dialyzer to the reservoir, and at a different time (ii) a PD treatment in which fresh PD dialysis fluid is pumped to a patient and used PD dialysis fluid is pumped from the patient to the reservoir.2. The hybrid HD/PD system of claim 1 , wherein a same dialysis fluid cassette is used to run (i) and (ii).3. The hybrid HD/PD system of claim 2 , wherein a same dialysis fluid pumping apparatus is used to operate the cassette to run (i) and (ii).4. The hybrid HD/PD system of claim 3 , wherein an additional HD unit is used to run (i).5. The hybrid HD/PD system of claim 1 , wherein a sorbent and/or carbon filled cartridge is located upstream of the reservoir to clean the used HD dialysis fluid being delivered to the reservoir.6. The hybrid HD/PD system of claim 5 , wherein the sorbent and/or carbon filled cartridge is located downstream of the dialysis fluid compartment of the dialyzer in (i).7. The hybrid HD/PD system of claim 1 , ...

PERISTALTIC PUMP

A peristaltic pump includes a mounting concave section on which a peristaltically-actuated tube connected to an arterial blood circuit is mountable; a roller which compresses the peristaltically-actuated tube mounted on the mounting concave section in a radial direction and causes the peristaltically-actuated tube to be peristaltically actuated in a longitudinal direction such that a liquid therein is flowable in the arterial blood circuit; a load sensor that is able to detect displacement of the peristaltically-actuated tube mounted on the mounting concave section in the radial direction; and blockage detecting means that is able to detect a blockage of the arterial blood circuit based on the displacement detected by the load sensor. 1. A peristaltic pump comprising:a mounting concave section on which a peristaltically-actuated tube connected to a liquid flow route, through which a predetermined liquid is circulatable, is mountable;a peristalsis section which compresses the peristaltically-actuated tube mounted on the mounting concave section in a radial direction and causes the peristaltically-actuated tube to be peristaltically actuated in a longitudinal direction such that a liquid therein is flowable in the liquid flow route;displacement detecting means that is able to detect displacement of the peristaltically-actuated tube mounted on the mounting concave section in the radial direction; andblockage detecting means that is able to detect a blockage of the liquid flow route based on the displacement detected by the displacement detecting means.2. The peristaltic pump according to claim 1 , further comprising:a rotor in which a plurality of the peristalsis sections are formed,wherein the rotor rotates in the mounting concave section, and thereby, the peristaltically-actuated tube mounted on the mounting concave section is capable of being peristaltically actuated by the peristalsis section in a cycle, and the blockage detecting means performs detection of a ...

Catheter device, comprising a valve for controlling a fluid flow through a catheter

The invention relates to a catheter device () comprising a catheter () for insertion into a living being and at least one lumen () for guiding a fluid flow within a section of the catheter device, and comprising a valve for controlling a fluid flow, in particular through a catheter, having a valve control chamber (), into which an inlet opening () of an inlet channel () and an outlet opening () of an outlet channel () open, and further having a closure element () which can be moved in the valve control chamber () in a controlled manner and which, in at least a first position (I), closes the outlet opening (), in at least a second position (II) closes the inlet opening (), and which, in at least a third position (III), keeps open a connecting channel between the inlet opening () and the outlet opening (), a valve train (A, A′, B, B′, ) being provided and optionally moving the closure element () to at least the first, second or third position, and the at least one lumen () being fluidically connected to the inlet channel or the outlet channel. 124-. (canceled)25. A catheter device with a valve configured to control a fluid flow through a catheter , the catheter device comprising: a feed channel comprising a feed opening;', 'a discharge channel comprising a discharge opening;', 'a connection channel, wherein the feed opening and the discharge opening are separated by the connection channel; and', 'a closure body configured to be movable in a controlled manner within the valve body, the closure body configured to take a first position in which the discharge opening is closed, a second position in which the feed opening is closed, and a third position in which the closure body is configured to hold open the connection channel; and, 'a valve body, the valve body comprisinga valve drive configured to move the closure body between the first position, the second position, and the third position;wherein the valve controller is configured to be detachable to the valve drive in ...

MEDICAL DEVICE AND METHOD OF DETECTING THE FILLING LEVEL OF A BUBBLE CHAMBER

The present invention relates to a medical device, in particular to a blood treatment apparatus having a control and processing unit, having at least one structure-borne sound emitter and having at least one structure-borne sound sensor, each configured for coupling to coupling points of a medical tubing kit which can be coupled to the medical device, wherein the filling level of a bubble chamber arranged in the tubing kit can be determined at the tubing kit via the control and processing unit based on the measurement of the structure-borne sound. 1. A medical device , in particular a blood treatment apparatus having a control and processing unit , at least one structure-borne sound emitter and at least one structure-borne sound sensor , each configured for coupling to coupling points of a medical tubing kit which can be coupled to the medical device ,characterized in thatthe filling status of a bubble chamber arranged in the tubing kit can be determined via the control and processing unit on the basis of the measurement of the structure-borne sound at the tubing kit.2. A medical device in accordance with claim 1 , characterized in that the structure-borne sound coupled via the structure-borne sound emitter into the tubing kit and propagating in the fluid circuit is taken up via the structure-borne sound sensor and conducted to the control and processing unit for determining the filling level claim 1 , and/or wherein the control and processing unit he the filling level of the bubble chamber by comparison with at least one stored characteristic.3. A medical device in accordance with claim 1 , wherein the structure-borne sound emitter is an occluding pump claim 1 , in particular a roller pump claim 1 , which can be coupled to a pump section of the tubing kit claim 1 , and/or wherein the structure-borne sound emitter is an electronically controlled sound generator which preferably comprises a piezo-element and/or which can preferably be coupled upstream or downstream ...

Blood Purification Apparatus and Method of Discharging Bubbles Therefrom

Microbubbles detached from a blood circuit and a blood purification unit are discharged with the use of a backflow generated at the instant that a roller of a blood pump releases a squeezable tube. In a normal rotation step, a region filled with a priming solution after a priming step is closed by a closing unit, and a rotor of a blood pump is rotated normally until a roller of the blood pump releases a squeezable tube to generate a backflow. After the backflow is generated at the release of the squeezable tube by the roller of the blood pump, bubbles are moved by reversely rotating the rotor while disabling the closing by the closing unit. Thus, the bubbles are discharged through a discharge unit. 1. A blood purification apparatus comprising:a blood circuit including an arterial blood circuit and a venous blood circuit and allowing a patient's blood to extracorporeally circulate from a distal end of the arterial blood circuit to a distal end of the venous blood circuit;a blood purification unit connected to a proximal end of the arterial blood circuit and to a proximal end of the venous blood circuit and that purifies the blood flowing through the blood circuit;a squeezable tube connected to the arterial blood circuit;a blood pump formed of a peristaltic pump that delivers liquid by squeezing, with a roller, the squeezable tube while a rotor is driven to rotate, the blood pump delivering the liquid from the distal end of the arterial blood circuit toward the blood purification unit when the rotor is rotated normally such that the roller moves in a lengthwise direction of the squeezable tube, the blood pump delivering the liquid from the blood purification unit toward the distal end of the arterial blood circuit when the rotor is rotated reversely such that the roller moves in the lengthwise direction of the squeezable tube;a discharge unit through which a priming solution supplied into the blood circuit is discharged to an outside;a closing unit that generates a ...

Method for setting up a fluid processing medical apparatus

A method for setting-up a fluid processing medical apparatus, the method includes: a) positioning a disposable component intended to be used for therapy with the fluid processing medical apparatus relative to a reader unit by a user; b) reading component related information provided on the disposable component by the reader unit; c) matching the read component related information with component related data stored in a database; and d) providing a selection of suitable therapies for the disposable component to the user based on the matching.

VA ECMO WITH PULMONARY ARTERY VENTILATION

A veno-arterial extracorporeal membrane oxygenation system includes a dual lumen drainage cannula configured for withdrawing blood from a patient's vasculature in a manner that provides a perfusion of oxygenated blood with reduced carbon dioxide content while unloading the left ventricle, with two points of access to the patient's vasculature. The dual lumen drainage cannula has a first drainage tube and a second drainage tube co-axially aligned with the first drainage tube. The first and second drainage tubes are fluidly coupled to a connector. A blood pump having a pump inlet is configured for fluidly connecting with the connector, while an oxygenator having an oxygenator inlet is configured for fluidly connecting with a pump outlet. An infusion cannula is configured for fluidly connecting with an oxygenator outlet for infusing oxygenated blood into a patient's bloodstream. 1. A veno-arterial extracorporeal membrane oxygenation (VA ECMO) system comprising: a first drainage tube having a proximal end, a distal end, and a sidewall extending between the proximal end and the distal end;', 'a second drainage tube coaxially aligned with the first drainage tube and having a proximal end, a distal end, and a sidewall extending between the proximal end and the distal end; and', 'a connector configured for fluidly connecting with the first drainage tube and the second drainage tube;, 'a dual lumen drainage cannula comprisinga blood pump having a pump inlet and a pump outlet, the pump outlet configured for fluidly connecting to the connector;an oxygenator having an oxygenator inlet and an oxygenator outlet, the oxygenator inlet configured for fluidly connecting with the pump outlet; andan infusion cannula configured for fluidly connecting with the oxygenator outlet.2. The VA ECMO system of claim 1 , wherein the first drainage tube has at least one first drainage aperture provided at the distal end.3. The VA ECMO system of claim 2 , wherein the second drainage tube has at ...

Blood circulation system

The preset invention discloses an artificial heart and lung apparatus ( 100 ) including a roller pump ( 120 ); a blood removal line ( 101 ); a first blood transfer line ( 104 ); a blood removal rate sensor ( 111 ) and a control unit ( 140 ) that performs linked control of the roller pump ( 120 ) in correspondence with a blood removal rate. The control unit ( 140 ) is capable of detecting that the blood removal rate deviates from a blood removal condition set in advance, and out-of-set condition blood removal is performed.

Blood pump integrated in a housing front

A device for extracorporeal blood treatment, in particular a dialysis machine, including a peristaltic pump for conveying fluid from a low-pressure side to a high-pressure side, the peristaltic pump comprising a rotor which is rotatable around a rotor axis and a support area which is formed around the rotor axis in an arcuate manner, with an elastically deformable fluid line being able to be positioned between the rotor and the support area and being deformed between the rotor and the support area with rotation of the rotor while forming a cross-sectional constriction, so that upon rotation of the rotor with respect to the support area a fluid in the fluid line is conveyed from the low-pressure side to the high-pressure side. The device includes a machine housing part realized as a formed sheet metal part, wherein the support area is formed in the machine housing part by plastic deformation.

VA ECMO with Pulmonary Artery Ventilation

A veno-arterial extracorporeal membrane oxygenation system includes a dual lumen drainage cannula configured for withdrawing blood from a patient's vasculature in a manner that provides a perfusion of oxygenated blood with reduced carbon dioxide content while unloading the left ventricle, with two points of access to the patient's vasculature. The dual lumen drainage cannula has a first drainage tube and a second drainage tube co-axially aligned with the first drainage tube. The first and second drainage tubes are fluidly coupled to a connector. A blood pump having a pump inlet is configured for fluidly connecting with the connector, while an oxygenator having an oxygenator inlet is configured for fluidly connecting with a pump outlet. An infusion cannula is configured for fluidly connecting with an oxygenator outlet for infusing oxygenated blood into a patient's bloodstream. 120-. (canceled)21. A veno-arterial extracorporeal membrane oxygenation (VA ECMO) system comprising: a first drainage tube configured for fluid drainage from a first portion of a cardiopulmonary system; and', 'a second drainage tube aligned with the first drainage tube and configured for fluid drainage from a second portion of the cardiopulmonary system;, 'a dual lumen drainage cannula comprisinga blood pump having a pump inlet and a pump outlet, the pump inlet configured for fluidly connecting with the first drainage tube and the second drainage tube; andan oxygenator having an oxygenator inlet and an oxygenator outlet, the oxygenator inlet configured for fluidly connecting with the pump outlet,wherein a distal end of the second drainage tube is fixedly connected to the first drainage tube.22. The VA ECMO system of claim 21 , wherein the distal end of the second drainage tube comprises a tapering section and wherein the second drainage tube is fixedly connected to the first drainage tube along a length of the tapering section.23. The VA ECMO system of claim 21 , wherein the first drainage tube ...

PERISTALTIC PUMP AND PUMPING METHOD, IN PARTICULAR FOR USE AS IMPLANT

A pump having at least a fluid pump chamber () and a first driver chamber () separated from the fluid pump chamber () by an elastic wall (--) is described with the first driver chamber () expanding after a chemical reaction between fuel and oxidant and driving through deformation of the elastic wall fluid out of the fluid pump chamber (), with the main parts of the pump being made of an elastic material to be used for example as a body implant. 1. Peristaltic pump driven by a chemical reaction between a fuel and an oxidant comprisingat least a fluid pump chamber anda first driver chamber separated from the fluid pump chamber by a first at least partly elastic wall,wherein the first driver chamber comprises one or more ports for fuel or oxidant containing fluids to enter and for exhaust fluids to leave the chamber,wherein the first driver chamber expands after a first chemical reaction between fuel and oxidant in said first driver chamber.2. The pump of comprising at least two pairs of chambers each comprising a fluid pump chamber and a first driver chamber separated from the fluid pump chamber by a first at least partly elastic wall.3. The pump of wherein the fluid pump chamber of each pair is located closer to the geometrical center of the pump than its associated first driver chamber.4. The pump of claim 1 , comprising a second driver chamber separated from the fluid pump chamber or the first driver chamber by a second at least partly elastic wall wherein the second driver chamber expands after a chemical reaction between fuel and oxidant different from the first chemical reaction expanding the first driver chamber.5. The pump of claim 1 , further comprising several driver chambers and an ignition controller adapted and structured to initiate the chemical reactions expanding said driver chambers at different times within the duration of one period of a cyclic process.6. The pump of claim 1 , wherein said first driver chamber comprises catalytic material to promote ...

Hemodialysis Patient Data Acquisition, Management and Analysis System

A hemodialysis patient data acquisition and management system resides on a host computer which receives information from one or more non-invasive, optical blood monitors associated with a hemodialysis system. When a patient is undergoing hemodialysis treatment, a sensor assembly monitors the patient's blood flowing through the hemodialysis system and a controller for the blood monitor generates data which includes at least an identification code for the patient undergoing the treatment on the respective system, and non-invasively determined blood data taken at the onset of the scheduled treatment, such as initial Hgb, HCT, and SAT values. A host computer communicates with the one or more optical blood monitors, preferably via a wireless network, and the patient's session commencement data is downloaded to the host computer. The host computer includes a patient database containing historical session commencement data for a plurality of patients, as well as screen displays for displaying historical data for individual patients, such as Hgb trends. The system also preferably provides a predictive algorithm for the patient's Hgb at the patient's next scheduled hemodialysis treatment session. The preferred system also includes software that provides a recommended dose of the anemia management drug for the patient. 1. A system for hemodialysis patient data acquisition and management , comprising:a hemodialysis system, configured to draw blood from a patient, pass the drawn blood through extracorporeal tubing and through a dialyzer, and return the dialyzed blood through extracorporeal tubing to the patient; ["a sensor assembly, configured to monitor the patient's blood flowing through the hemodialysis system, and", 'a controller, configured to generate session data for the patient which includes an identification code for the patient and blood measurement data for the patient taken at the onset of the treatment session; and, 'a non-invasive blood monitor, the blood monitor ...

SYSTEMS AND METHODS FOR PUMPING SALINE THROUGH A STERILIZING FILTER

A method is provided for controlling fluid flow through a tubing segment is provided in which a pump draws fluid through the tubing segment using negative pressure P. The method includes the steps of: a) operating the pump at an initial commanded fluid flow rate to draw fluid through the tubing segment; b) measuring on a continuous basis the P in the tubing segment; c) determining into which of four zones the measured P falls, a first zone being where P>X, a second zone being where X>P>X, a third zone where X>P>X, and a fourth zone where X>P; d) if P is in the first zone for greater than a first pre-established time period, then increasing the commanded flow rate of the pump and returning to step b); e) if P is in the second zone, then continuing to operate the pump at the flow rate at which the pump is currently operated and returning to step b); f) if P is in the third zone, for greater than a second pre-established time period, then decreasing the commanded flow rate of the pump and returning to step b); and g) if P is in the fourth zone, then commanding the pump to stop. A system including a programmable controller configured to automatically perform the method is also disclosed 1. A method for controlling fluid flow through a tubing segment in which a pump draws fluid through the tubing segment using negative pressure P comprising the steps of:a) operating the pump at an initial commanded fluid flow rate to draw fluid through the tubing segment;b) measuring on a continuous basis the P in the tubing segment;{'sub': 1', '1', '2', '2', '3', '3, 'c) determining into which of four zones the measured P falls, a first zone being where P>X, a second zone being where X>P>X, a third zone where X>P>X, and a fourth zone where X>P;'}d) if P is in the first zone for greater than a first pre-established time period, then increasing the commanded flow rate of the pump, limited to a specified maximum flow rate, and returning to step b);e) if P is in the second zone, then ...

TREATMENT OF BLOOD

Activation of senescent stem cells in humans to promote wound healing and other therapies, and to promote general enhancement of health by application of non-thermal atmospheric pressure plasma (NTAPP) to tissues and body fluids such as blood. In particular, the targets of the NTAPP are stem cells. The products contained in NTAPP can affect the behavior of peripheral blood stem cells (PBSC) in blood, as well as stem cells found in tissues surrounding the blood in which said products are carried. 1. A process for treating blood with non-thermal atmospheric pressure plasma , comprising:{'claim-ref': {'@idref': 'CLM-00008', 'claim 8'}, 'claim-text': 'controlling levels of NTAPP and/or ROS to which the blood is exposed to stimulate cells in the blood and to avoid cell stress/death.', "exposing a portion of a patient's blood to at least one of non-thermal plasma generated at atmospheric pressure and room temperature (NTAPP) in the apparatus of and reactive oxygen species (ROS) generated by the interaction of NTAPP with oxygen-containing gas;"}2. A process as in claim 1 , wherein the level of NTAPP does not exceed 8 J/cm.3. A process as in claim 2 , wherein the level of NTAPP does not exceed 4 J/cm.4. A process as in claim 1 , wherein the portion of blood is removed from the patient claim 1 , exposed to the NTAPP claim 1 , and returned claim 1 , while a remainder of the patient's blood is in normal circulation within the patient.5. A process as in claim 4 , wherein the portion of blood is removed and returned via a continuous flow path.6. A process as in claim 1 , wherein the blood is directly exposed to NTAPP in vivo with the use of a plasma needle.7. A process as in claim 1 , wherein blood is treated with NTAPP via the use of an implanted device.8. Apparatus for treating blood with non-thermal plasma generated at atmospheric pressure and room temperature (NTAPP) in vitro claim 1 , comprising:(a) a non-thermal plasma component comprising:a holding area for blood, having ...

MOTOR DRIVE CONTROLLING APPARATUS, MOTOR DRIVE CONTROLLING METHOD, AND TUBE PUMP

A motor drive controlling apparatus includes: a controller that outputs a drive control signal; a motor driver that generates and outputs a drive signal to a motor; and an encoder that detects a rotational position of the motor. The controller has a measurement unit that detects a time point when rotation of the motor is switched to a reverse direction of a target rotational direction by an external factor during input of the speed command signal, and measures a movement amount in the reverse direction from a rotational position of the motor at a time point of the switching, and a transmitting unit that transmits, to the motor driver, a switching signal that switches a conduction method from 180-degree conduction to 120-degree conduction in a case where the movement amount is a predetermined threshold or more. 1. A motor drive controlling apparatus , comprising:a controller that generates and outputs a drive control signal in response to an input of a speed command signal and a rotational direction signal;a motor driver that generates a drive signal and outputs the generated drive signal to a motor, in response to an input of the drive control signal; anda position detector that detects a rotational position of the motor and outputs a detection signal that is based on a detection result, whereinthe motor driver provides 120-degree conduction as a conduction method from a start of rotation of the motor to a predetermined rotational speed or provides 180-degree conduction as a conduction method for the predetermined rotational speed or more, andthe controller hasa measurement unit that detects a time point when rotation of the motor is switched to a reverse direction of a target rotational direction that is based on the rotational direction signal by an external factor during input of the speed command signal, based on the detection signal, and measures a movement amount in the reverse direction from a rotational position of the motor at a time point of the switching, ...

Motor drive controlling apparatus, motor drive controlling method, and tube pump

A motor drive controlling apparatus includes: a controller that generates and outputs a drive control signal, in response to input of a speed command signal and a rotational direction signal; a motor driver that generates and outputs a drive signal to a motor, in response to the drive control signal; and an encoder that detects a rotational position of the motor to output an encoder signal. The controller includes: a measurement unit that detects, based on the encoder signal, a time at which a rotational state of the motor becomes, caused by an external factor, different from that commanded by the speed command and rotational direction signals, and measures a movement amount from the time; and a transmitting unit that transmits, to the motor driver, a signal for stopping an output of the drive signal, when the movement amount and a drive-control-signal outputting state satisfy a predetermined condition.

Blood circulation system

Disclosed is an artificial heart and lung apparatus ( 100 ) that can be connected to a patient (P), and transfers removed blood to a human body via a roller pump ( 120 ), the system including: the roller pump ( 120 ); a blood removal line ( 101 ) which transfers removed blood to the roller pump ( 120 ); a first blood transfer line ( 104 ) that transfers blood, which is transferred from the roller pump ( 120 ), to the human body; a blood removal rate sensor ( 111 ) that is provided in the blood removal line ( 101 ); and a control unit ( 140 ), in which the control unit ( 140 ) performs control such that a blood transfer rate of the roller pump ( 120 ) is in a specific range with respect to a blood removal rate measured by a blood removal rate sensor ( 111 ).

ADAPTIVE TUBING CASSETTES FOR USE IN CONNECTION WITH INTERVENTIONAL CATHETER ASSEMBLIES

Peristaltic pump assemblies in which the closing and opening of a pivoting or sliding door is coordinated with movement of the occlusion bed toward and away from the rotor assembly to engage and disengage tubing within the occlusion pathway are disclosed. Linkage mechanisms provided by the interaction of cam surfaces with rollers, as well as bar linkage mechanisms, are disclosed. The linkage mechanism, in addition to providing precise displacement of the occlusion bed, may also provide an over-center feature that enhances safety and pump operation when the door is in a closed position. Latching mechanisms and sensors may be incorporated. Control consoles incorporating such peristaltic pump assemblies are described. Adaptive components such as tubing cassettes routing aspiration and/or infusion tubing in a predetermined configuration to mate with occlusion pathways in aspiration and/or infusion pump assemblies provided in various types of medical devices and control consoles are also provided. 1. An adaptive tubing cassette for use in connection with an interventional catheter assembly , comprising:a handle component having an interface region adapted to mount stably in a mating interface region of a control console;a first preformed tubing section and a second preformed tubing section, each of the preformed tubing sections being in the form of a loop, mounted to and extending from a common side of the handle component, the first and second preformed tubing sections being adapted to mount stably in tubing receiving pathways provided in connection with the control console; wherein the first preformed tubing section is configured to withstand a higher pressure than the second preformed tubing section.2. The adaptive tubing cassette of claim 1 , wherein at least one of the first or the second preformed tubing sections includes an infusion tubing section and is designed to withstand infusate rates of up to 150 ml/min.3. The adaptive tubing cassette of claim 1 , wherein ...

SYSTEM, METHOD AND COMPUTER-ACCESSIBLE MEDIUM FOR TREATING CIRCULATING TUMOR CELLS IN THE BLOOD STREAM

An exemplary apparatus, can include, for example, a circulating tumor cell (CTC) treatment arrangement, a pump arrangement configured to circulate a fluid through the CTC treatment arrangement, and an electric field generator electrically connected to the CTC treatment arrangement, and configured to apply an electric field to the fluid circulating through the CTC treatment arrangement. The pump arrangement can be a peristaltic pump, which can be configured to continuously circulate the fluid through the CTC treatment arrangement. According to another exemplary embodiment of the present disclosure, method, system and computer-accessible medium can be provided for killing at least one circulating tumor cell (CTC). Using such exemplary embodiment, blood can be pumped from a body of a patient to an electroporation chamber inside of a CTC treatment arrangement. An electric field can be applied to the blood located in the electroporation chamber in order to kill the CTC. The electric field-applied blood can be pumped back into the body.

BODY DRAINAGE APPARATUS

A body drainage system for draining fluid from a body cavity of a patient, the body cavity being provided with an access port, wherein the system comprises 127-. (canceled)28. A body drainage system for draining fluid from a body cavity of a patient , the body cavity being provided with an access port , wherein the system comprisesa rotatable peristaltic pump mechanism,a housing for housing at least a portion of the peristaltic pump mechanism,a flexible tube unit configured to be connected at an access port end to the patient access port, and at a collection unit end to a collection unit,a cover for covering movable parts of the peristaltic pump mechanisma regulator unit configured to regulate a rotational speed of the peristaltic pump mechanism, wherein the flexible tube unit is configured to form a loop suitable to be placed in one way only at peristaltic pump mechanism making it possible for the rotatable peristaltic mechanism to compress a pump portion of the flexible tube unit repeatedly such that pumping occurs in a desired direction.29. A body drainage system according to claim 28 , wherein the system further comprisesa cylindrical or partially cylindrical inner surface, wherein the loop of the flexible tube unit is configured to be placed in one way only at the rotatable peristaltic pump mechanism making it possible for the rotatable peristaltic mechanism to compress a pump portion of the flexible tube unit repeatedly against the cylindrical inner surface contributing to efficient pumping in the desired direction.30. The drainage system according to claim 28 , further comprising holding means that can be set in an open position claim 28 , and that can be set in a closed position claim 28 , respectively claim 28 , and when set in the closed position provides the cylindrical inner surface mentioned in for the peristaltic mechanism claim 28 , and simultaneously constitutes the cover mentioned in .31. The drainage system according to claim 28 , wherein the ...

Method for temporarily interrupting an extracorporeal blood treatment, control device and blood treatment apparatus

This disclosure relates to a method for temporarily interrupting an extracorporeal treatment of blood of a patient by use of a blood treatment apparatus. The method comprises activating or controlling a control device provided and configured to bring the blood treatment apparatus into a state in which the blood treatment of the patient can be interrupted with the intention to continue the blood treatment. This disclosure further relates to a control device, a blood treatment apparatus, a digital storage means, a computer program product as well as a computer program. 116-. (canceled)17. A control device being configured to be activated or controlled in order to temporarily interrupt a blood treatment being effected by a blood treatment apparatus or being configured to effect a temporary interruption of the blood treatment apparatus;wherein a patient is connected to the blood treatment apparatus via an extracorporeal blood circuit during the blood treatment;wherein the control device is configured to at least bring the blood treatment apparatus into a state in which the blood treatment can be interrupted temporarily with the ability to subsequently continue the blood treatment,wherein the control device is configured to induce a connection of an arterial line section and a venous line section of the extracorporeal blood circuit to a source of substitute or to advise a user to connect the arterial line section and the venous line section of the extracorporeal blood circuit to the source of substitute; andwherein the control device is further configured to induce or effect a circulation of at least one substitute liquid supplied from the source of substitute in the extracorporeal blood circuit when the blood treatment is temporarily interrupted.18. The control device according to claim 17 , wherein the control device is configured to induce or effect that the interrupted blood treatment is continued by at least one medical device that had been used before interruption ...

DEVICE AND METHOD FOR REGULATING AND PRESETTING THE PUMP RATE OF BLOOD PUMPS

The present invention relates to the field of regulating and presetting pump rates of blood pumps. It is directed at a device and a method in which the blood pressures are monitored upstream and/or downstream from the blood pump, and these values or another value formed from these values are compared with a limit value, which depends on an operating parameter or a pump parameter on the blood pump. In violation of the limit value, the pump rate of the blood pump is modified to such an extent or a new pump rate is determined so that the limit value is no longer violated or the degree of violation is reduced. 2. The method according to claim 1 , wherein the limit value is defined claim 1 , so that a certain blood damage incidence is not exceeded.3. The method according to claim 1 , wherein the blood pump is arranged in an extracorporeal blood circulation of a blood treatment machine.2. The method according to claim 2 , wherein the blood treatment machine is a dialysis machine claim 2 , a machine for supporting heart and lung activity or a machine for supporting liver function.5. The method according to claim 1 , wherein the blood pump is a centrifugal pump and the operating parameter is the pump rate.5. The method according to claim 5 , wherein the blood pressure upstream from the centrifugal pump is determined from the blood pressure downstream from the centrifugal pump and the rotational speed of the centrifugal pump or wherein the blood pressure downstream from the centrifugal pump is determined from the blood pressure upstream from the centrifugal pump and the rotational speed of the centrifugal pump.7. The method according to claim 1 , wherein a preferred range for an operating point of the blood pump is defined by a maximum blood pressure which depends on the pump rate upstream and/or downstream from the centrifugal pump claim 1 , and wherein the blood pump is triggered at a new pump rate such that the working point of the blood pump is within the allowed range ...

Perestaltic pump and device for isolating cells from biological tissue

The invention is directed to a peristaltic pump (10), comprising: a flexible membrane (1) forming a at least one bladder (2) against a support, wherein each bladder is provided with one input orifice (4) which admits a fluid to the bladder (2) and one outlet orifice (5) which releases the fluid from the bladder (2); and at least one roller bearing (6) is configured to rotate about an axis (7) and to apply a compressive force against the at least one bladder (2). The peristaltic pump may be in fluid communication with a tapered jet (11).

Method and System for Filling and Venting a Device for Extracorporeal Blood Treatment, with Stepped Flooding of a Filter

A method for filling and venting a device for extracorporeal blood treatment is disclosed, such as a patient module in a heart-lung machine, without attached patient. A filling liquid from a filling liquid container located higher than the device flows by gravity via a venous side of the system into a reservoir and flows onwards into a blood pump located at the lower end of the reservoir, wherein a first controllable valve (HC) for a venting line of a filter is opened and, after the response of an upper filling level sensor in the reservoir, is closed. An upper level of the filter is positioned higher than the upper filling level sensor, and a start-stop motion of the blood pump is performed, as a result of which a stepped flooding of the filter is made providing for an advantageous de-airing of the device. 165.-. (canceled)66. A system for extracorporeal treatment of a patient's blood , said system comprising:a control module having an automatic clamping or valving apparatus, a blood pump drive, and evaluation and control electronics; anda patient module having a blood circuit which comprises a venous blood inflow conduit, a reservoir, an oxygenator, a bubble detector, an arterial blood outflow conduit, and a blood pump;wherein the patient module engages the control module such that the blood pump drive, evaluation electronics and control electronics of the control module are operatively connected to corresponding components of the patient module; andwherein the evaluation and control electronics include a control unit that is adapted to automatically control components of the patient module to automatically perform a filling and venting process wherein the blood circuit is filled with filling fluid and air is removed from the blood circuit, without requiring human intervention after the system has been connected to a source of filling fluid and after initialization of said filling and venting process.67. A system according to wherein the blood circuit further ...

Adjusting Device for Pressure Detector

An adjusting device for a pressure detector that is capable of arbitrarily adjusting the initial position of a membrane member is provided. An adjusting device for a pressure detector includes a control unit that sequentially executes a first step in which a predetermined adjusting pressure is generated in a first zone by activating a pump with the first zone being closed by the closing of an electromagnetic valve, and a second step in which a gas-phase portion, the first zone, and a second zone are combined into a closed space by disabling the closing of the electromagnetic valve; and an adjusting-pressure-acquiring unit that acquires the adjusting pressure to be generated in the first step, the adjusting pressure being acquired in accordance with a relationship between a pressure and a capacity of the first zone in the first step and a pressure and a capacity of the combination of the gas-phase portion, the first zone, and the second zone in the second step. The control unit brings the membrane member to a position corresponding to the adjusting pressure by executing the second step after activating the pump in the first step in such a manner as to generate the adjusting pressure acquired by the adjusting-pressure-acquiring unit. 1. An adjusting device for a pressure detector , the pressure detector includinga case connectable to a flow route for liquid, anda membrane member attached to the case and separating a liquid-phase portion to be supplied with the liquid in the flow route and a gas-phase portion to be supplied with gas from each other, the membrane member being displaceable in accordance with a pressure of the liquid supplied into the liquid-phase portion,the pressure detector detecting the pressure of the liquid in the flow route by detecting a pressure in the gas-phase portion,the adjusting device comprising:piping having one end and an other end, the one end serving as a connecting portion connectable to the gas-phase portion, the other end allowing ...

DIALYSIS MACHINE AND METHOD

A dialysis machine configured to carry out a method and a method for draining an extracorporeal fluid circuit utilizing a dialysis machine, wherein the dialysis machine is connected to a dialyzer and said extracorporeal fluid circuit, said extracorporeal fluid circuit comprising an arterial line connectable to a patient, for drawing blood from the patient and a venous line connectable to the patient for returning blood to the patient, the method comprising: after treatment termination from said extracorporeal fluid circuit draining remaining fluid from said extracorporeal fluid circuit through the dialyzer. 135to . (canceled)36. A method for draining an extracorporeal fluid circuit utilizing a dialysis machine , wherein the dialysis machine is connected to a dialyzer and the extracorporeal fluid circuit , wherein the extracorporeal fluid circuit includes an arterial line connectable to a patient for drawing blood from the patient and a venous line connectable to the patient for returning blood to the patient , the method comprising: wherein the negative pressure is applied on the dialyzer fluid circuit relative to the extracorporeal fluid circuit by means of introducing gas into the extracorporeal fluid circuit,', 'wherein the arterial line includes a first port connectable to the patient, and the venous line includes a second port connectable to the patient; and, 'after treatment termination from said extracorporeal fluid circuit, draining remaining fluid from said extracorporeal fluid circuit through the dialyzer, wherein the dialyzer is connected to the dialysis machine via a dialyzer fluid circuit for distribution of dialysis fluid to and from the dialyzer, wherein the extracorporeal fluid circuit is drained through the dialyzer by applying a negative pressure on the dialyzer fluid circuit relative to the extracorporeal fluid circuit,'}connecting the first port to the second port prior to introducing the gas into the extracorporeal fluid circuit.37. The method ...

Cord blood collection system and method of operation

A cord blood collection system is provided. The system includes a housing having an upper portion and a lower portion, the upper portion and lower portion defining a hollow interior. A peristaltic pump is disposed within the lower portion, the peristaltic pump having an input portion and an output portion. A reel member is disposed in the upper portion. A tubing member is movably coupled to the reel member, the tubing member being operably coupled to the peristaltic pump, the first end being configured to couple with a container, the second end being configured to couple with a needle.

APPARATUS AND METHOD FOR DETERMINING A PARAMETER INDICATIVE OF THE PROGRESS OF AN EXTRACORPOREAL BLOOD TREATMENT

An apparatus and process for extracorporeal treatment of blood comprising a treatment unit, a blood withdrawal line, a blood return line, a preparation line and a spent dialysate line. A control unit is configured to calculate values of a parameter relating to treatment effectiveness based on measures of lactate or citrate or acetate concentration in the spent dialysate line. 1. A process of extracorporeal treatment of blood using an apparatus including a preparation line having one end configured for being connected to an inlet of a secondary chamber of a blood treatment unit , a semi-permeable membrane separating said secondary chamber from a primary chamber of the blood treatment unit , and a spent dialysate line having one end configured for being connected to an outlet of said secondary chamber , wherein the process comprises:causing a fresh treatment liquid to flow in the preparation line towards the secondary chamber at a first flow rate, the treatment liquid including lactate;causing a used treatment liquid to flow in the spent dialysate line at a second flow rate;measuring one or more values of a parameter related to a concentration of lactate in the used treatment liquid flowing in the spent dialysate line; and said one or more measured values of the parameter related to the concentration of lactate of the used treatment liquid, and', 'at least one of said first flow rate of fresh treatment liquid or said second flow rate of used treatment liquid., 'computing at least one value of a parameter indicative of the effectiveness of the extracorporeal blood treatment based on2. The process of claim 1 , further comprising receiving one or more values of a parameter related to the concentration of lactate of the fresh treatment liquid flowing in the preparation line.3. The process of claim 2 , wherein receiving the one or more values of the parameter related to the concentration of lactate of the fresh treatment liquid flowing in the preparation line includes: ...

CATHETER DEVICE COMPRISING A SEPARATING DEVICE FOR RETAINING MAGNETIC PARTICLES CONTAINED IN A FLUID AND PROTECTION DEVICE FOR A FUNCTIONAL ELEMENT

The invention relates to, amongst other things, a catheter device comprising a catheter () in which a rotating shaft () which is made at least partially from a magnetic material is arranged, and a separating device which contains an annular body () surrounding the rotating shaft and having a cavity containing a magnetic body (), the magnetic body being arranged downstream from a point at which the shaft () exits the catheter () which it surrounds with respect to the direction of flow of the fluid through the catheter. 1242527132524. A catheter device with a catheter () , in which a rotating shaft () consisting at least partly of a magnetic material is arranged , and with a separating device which comprises a ring body () with a cavity containing a magnet body (′) , the ring body surrounding the rotating shaft , wherein the magnet body with respect to the flow direction of the fluid through the catheter is arranged downstream of a location , at which the shaft () exits out of the catheter () surrounding it.21516114561313131418192013131314. A catheter device for holding back magnetic particles ( , ) which are located in a fluid , with a transport channel ( , ′) , in which the fluid can be moved in a throughflow direction ( , , ) , and with a magnet device ( , ′ , ″ , , , , ) , wherein the magnet device comprises at least one magnet ( , ′ , ″) which is separated from the fluid by a magnetically permeable solid matter layer ().3. A catheter device according to claim 2 , characterised in that the magnet interacts exclusively with magnetic or magnetisable particles in the fluid in the transport channel.4. A catheter device according to one of the preceding claims claim 2 ,characterised by{'b': 11', '12, 'a first and a second fluid connection (, ), between which the separating device forms a fluid-tight fluid channel.'}5. A catheter device according to one of the preceding claims claim 2 ,characterised in that{'b': 13', '13', '14, 'a magnet (, ″) which is enveloped by a ...

Intravenous System Including Pump, Vascular Access Device And Securement Device And Methods Thereof

Embodiments disclosed herein are directed to a system including an intravenous (IV) pump, a vascular access device (VAD), securement devices, and methods thereof. The intravenous (IV) pump, vascular access device (VAD), and securement device can include a sensor, printed circuit board (PCB), communication module, and the like to determine the characteristics of the VAD device in use, the fluid being administered, and physiological characteristics of the patient. The pump unit can utilize this information to modify the flow characteristics of the fluid being administered. The VAD characteristics can be predetermined and stored on the VAD, derived from sensors, or derived from remote databases using a unique identifier. Fluid and physiological characteristics can be determined from sensors located on the pump, VAD, securement device or combinations thereof. 1. An infusion system , comprising:a vascular access device (VAD) including one of a first sensor and a first printed circuit board (PCB);a securement device including one of a second sensor and a second PCB, the securement device configured for securing the VAD to a skin surface of a patient; and communicate with at least one of the VAD and the securement device; and', 'receive information from at least one of the VAD and the securement device in order to modify a flow characteristic of a fluid., 'a pump unit in fluid communication with the VAD, wherein the pump unit is configured to2. The infusion system according to claim 1 , wherein the information received from one of the VAD and the securement device includes one of a VAD characteristic claim 1 , fluid characteristics claim 1 , and physiological characteristic.3. The infusion system according to claim 2 , wherein the VAD characteristic includes one of sensor data and a unique identifier.4. The infusion system according to claim 3 , wherein the pump unit queries the unique identifier against a database to retrieve additional VAD characteristics.5. The infusion ...

Adaptive tubing cassettes for use in connection with interventional catheter assemblies

Peristaltic pump assemblies in which the closing and opening of a pivoting or sliding door is coordinated with movement of the occlusion bed toward and away from the rotor assembly to engage and disengage tubing within the occlusion pathway are disclosed. Linkage mechanisms provided by the interaction of cam surfaces with rollers, as well as bar linkage mechanisms, are disclosed. The linkage mechanism, in addition to providing precise displacement of the occlusion bed, may also provide an over-center feature that enhances safety and pump operation when the door is in a closed position. Latching mechanisms and sensors may be incorporated. Control consoles incorporating such peristaltic pump assemblies are described. Adaptive components such as tubing cassettes routing aspiration and/or infusion tubing in a predetermined configuration to mate with occlusion pathways in aspiration and/or infusion pump assemblies provided in various types of medical devices and control consoles are also provided.

Adaptive tubing cassettes for use in connection with interventional catheter assemblies

Peristaltic pump assemblies in which the closing and opening of a pivoting or sliding door is coordinated with movement of the occlusion bed toward and away from the rotor assembly to engage and disengage tubing within the occlusion pathway are disclosed. Linkage mechanisms provided by the interaction of cam surfaces with rollers, as well as bar linkage mechanisms, are disclosed. The linkage mechanism, in addition to providing precise displacement of the occlusion bed, may also provide an over-center feature that enhances safety and pump operation when the door is in a closed position. Latching mechanisms and sensors may be incorporated. Control consoles incorporating such peristaltic pump assemblies are described. Adaptive components such as tubing cassettes routing aspiration and/or infusion tubing in a predetermined configuration to mate with occlusion pathways in aspiration and/or infusion pump assemblies provided in various types of medical devices and control consoles are also provided.

Pressure detection device of liquid flow route

A pressure detection device of a liquid flow route includes; displacement detecting means that detects displacement of a peristaltically-actuated tube in the radial direction; pressure calculating means that is able to calculate blood removal pressure based on the displacement of the peristaltically-actuated tube; closed flow route forming means that is able to form a closed flow route which includes a portion at which the displacement detecting means is disposed; pressure changing means that is able to arbitrarily change the pressure in the closed flow route; pressure detection means that is able to detect pressure change in the closed flow route; and calibration curve acquiring means that is able to produce and acquire a calibration curve with which the displacement detecting means and the pressure calculating means are calibrated by a relationship between the pressure change detected by the pressure detection means and a detection value of the displacement detecting means.

Peristaltic pump

A peristaltic pump includes a mounting concave section 8a on which a peristaltically-actuated tube connected to an arterial blood circuit is mountable; a roller which compresses the peristaltically-actuated tube mounted on the mounting concave section in a radial direction and causes the peristaltically-actuated tube to be peristaltically actuated in a longitudinal direction such that a liquid therein is flowable in the arterial blood circuit; a load sensor that is able to detect displacement of the peristaltically-actuated tube 1a mounted on the mounting concave section in the radial direction; and blockage detecting means that is able to detect a blockage of the arterial blood circuit based on the displacement detected by the load sensor.

Installation member and peristaltic pump

An installation member and a peristaltic pump are provided that allow work of attachment and work of detachment of a flexible tube to be peristaltic to and from a stator to be performed more easily and smoothly. An installation member that is to be detachably attached to a peristaltic pump including: a stator including an attachment recessed portion, in which a flexible tube to be peristaltic, is attached; a rotor that is rotatably driven in the attachment recessed portion; and a roller that causes the fluid to flow by imparting peristaltic motion to the flexible tube to be peristaltic attached to the attachment recessed portion in a longitudinal direction in association with rotation of the rotor while compressing the flexible tube to be peristaltic in a radial direction. The installation member including: a main body that is attachable to a predetermined portion of the stator, and that is formed integrally with a downstream-side fixing portion of the flexible tube to be peristaltic; and a notch portion that allows an upstream-side fixing portion of the flexible tube to be peristaltic to be positioned.

Pressure detection device of liquid flow route

A pressure detection device of a liquid flow route is provided which detects a pressure of an arterial blood circuit consisting of a flexible tube, a portion of which is connected to a peristaltically-actuated tube that can cause an internal liquid to flow by being compressed in a radial direction and being peristaltically actuated in a longitudinal direction in a roller of a blood pump, and which enables a predetermined liquid to be circulated. The pressure detection device includes a load sensor that detects radial displacement of the peristaltically-actuated tube.

Methods and devices for modulation of the operating point of liquid pumps in medical treatment devices

Fluid pumps and medical treatment devices, in particular dialysis machines, include devices configured such that operating pressures and flow rates of the fluid pumps assume desired characteristics, in particular constant values or controlled profiles. The operating point of a peristaltic hose roller pump is adjusted based on an angle of rotation of a pump rotor, or by adjusting the operating point of a centrifugal pump in accordance with a profile.

Systems and methods for priming hemodialysis using multiple fluid sources

A hemodialysis system configured to purge air from a blood circuit comprising: a dialyzer; a dialysis fluid circuit operable with the dialyzer via dialysis fluid inlet and outlet lines; the blood circuit operable with the dialyzer and including an arterial line, a venous line, a blood pump operable with the arterial line upstream of the dialyzer, and a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged using dialysis fluid or other physiologically acceptable fluid pumped by at least one of the fresh or used dialysis fluid pumps from the dialysis fluid circuit, through the dialyzer, into the blood circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly into the blood circuit.

Dialysis system including cassette with pumping tubes

A hemodialysis system includes a blood treatment machine, a blood pump housed by the blood treatment machine, a first dialysate pump housed by the blood treatment machine, a second dialysate pump housed by the blood treatment machine; and a fluid cassette including an upper portion and a lower portion. The fluid cassette further includes a blood pumping tube extending from the upper portion to the lower portion of the fluid cassette, a first dialysate pumping tube extending from the upper portion to the lower portion of the fluid cassette, and a second dialysate pumping tube extending from the upper portion to the lower portion of the fluid cassette.

Systems and methods for priming hemodialysis using dialysis fluid

A method for priming a hemodialysis treatment includes: providing a disposable cassette including at least a portion of a dialysate circuit and at least a portion of a blood circuit; placing a dialyzer in fluid communication with the dialysate circuit via a to-dialyzer dialysate line and a from-dialyzer dialysate line; placing the dialyzer in fluid communication with the blood circuit via an arterial blood line and a venous blood line; placing a source of dialysis fluid in fluid communication with the dialyzer; priming the dialysate circuit with dialysis fluid from the source while both the to-dialyzer dialysate line and the from-dialyzer dialysate line are connected at their dialyzer ends to the dialyzer; and priming the blood circuit with dialysis fluid from the source by actuating at least one valve provided by the disposable cassette.

Renal failure therapy machines and methods including convective and diffusive clearance

A renal failure therapy machine includes a blood cleaning filter, a dialysis fluid circuit including a balance chamber, the balance chamber including a fresh dialysis fluid compartment configured to send fresh dialysis fluid to the blood cleaning filter and a used dialysis fluid compartment configured to receive used dialysis fluid from the blood cleaning filter, a fresh dialysis fluid line in fluid communication with the fresh dialysis fluid compartment of the balance chamber and the blood cleaning filter, and a flow restrictor in fluid communication with the blood cleaning filter, the flow restrictor configured to cause fresh dialysis fluid delivered from the fresh dialysis fluid compartment, through the fresh dialysis fluid line, to the blood cleaning filter to be pressurized so that a first amount of the fresh dialysis fluid performs convective clearance and a second amount of the fresh dialysis fluid performs diffusive clearance.

Hemodialysis system including a disposable cassette

A dialysis system includes an on-line dialysate generator, a first dialysate pump in fluid communication with the on-line dialysate generator, and a second dialysate pump in fluid communication with the on-line dialysate generator. The dialysis system also includes a dialyzer in fluid communication with the first and second dialysate pumps. The dialysis system further includes a first valve located between the first dialysate pump and the dialyzer and a second valve located between the second dialysate pump and the dialyzer. The dialysis system is configured to alternate pumping of dialysate from the first and second dialysate pumps to the dialyzer using the first and second valves.

Dialysis system including automatic priming

A hemodialysis system comprising: a source of priming fluid; an extracorporeal circuit including an arterial line, a venous line, and a drip chamber; a level sensor operable with the drip chamber; a reversible blood pump operable with the extracorporeal circuit; a connection between the arterial and the venous line; and a priming sequence in which priming fluid from the source is pumped in a reverse pump direction through the extracorporeal circuit and reversibly in a normal pump direction through the extracorporeal circuit, wherein an output from the level sensor is used to determine when to stop pumping in at least one of the directions.

Renal therapy system having pump reversing fluid control

A renal therapy system includes: a filter; an arterial blood flowpath in fluid communication with the filter; a venous blood flowpath in fluid communication with the filter; a renal therapy fluid flowpath in fluid communication with the filter; first and second renal therapy fluid pumps; a plurality of valve actuators; and a dialysis fluid cassette including a plurality of valve portions configured to operate with the plurality of valve actuators so that (i) the first renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath for a number of first pump actuations, and (ii) the second renal therapy fluid pump pumps renal therapy fluid through the renal therapy fluid flowpath for a number of second pump actuations.

Blood circulation system

The preset invention discloses an artificial heart and lung apparatus ( 100 ) including a roller pump ( 120 ); a blood removal line ( 101 ); a first blood transfer line ( 104 ); a blood removal rate sensor ( 111 ) and a control unit ( 140 ) that performs linked control of the roller pump ( 120 ) in correspondence with a blood removal rate. The control unit ( 140 ) is capable of detecting that the blood removal rate deviates from a blood removal condition set in advance, and out-of-set condition blood removal is performed.

Medical device and method of detecting the filling level of a bubble chamber

The present invention relates to a medical device, in particular to a blood treatment apparatus, having a control and processing unit, having at least one structure-borne sound emitter and having at least one structure-borne sound sensor, each configured for coupling to coupling points of a medical tubing kit which can be coupled to the medical device, wherein the filling level of a bubble chamber arranged in the tubing kit can be determined at the tubing kit via the control and processing unit based on the measurement of the structure-borne sound.

Systems and methods for real time calibration of pump stroke volumes during a blood separation procedure

A method is provided for the real time calibration of a pump that is part of a reusable hardware component having a programmable controller during a blood separation procedure where fluid is flowed through a tubing in a tubing set by action of the pump. The method comprises programming the controller with a continuous function defining a relationship between pump inlet pressure and pump stroke volume; commencing the fluid processing procedure to operate the pump to draw fluid through the tubing; measuring fluid pressure in the tubing at the inlet of the pump; calculating a current pump stroke volume with the controller based on the continuous function and the pump rotational rate; and adjusting the pump rotational rate utilized by the controller to control the procedure to achieve a target fluid flow rate. The continuous function defining the relationship between pump inlet pressure and the pump stroke volume may be empirically determined over a predetermined range of inlet pressures.

Medical peristaltic pump

A peristaltic pump includes a driver, a pump body, a hose, a rotor and a connecting member. The driver includes a supporting shaft. The pump body includes a chamber housing the rotor. The hose is assembled to an internal side of a wall of the chamber. The connecting member connects the driver with the rotor, and is received in the chamber. The rotor is configured to sequentially squeeze the hose to cause medium in the hose to flow. The connecting member and the rotor rotate about and are supported by the supporting shaft. The medical peristaltic pump has a simple structure and is easy to operate.

Fluid conveyance monitoring system in an extracorporeal blood treatment device

A method for monitoring conveyance of fluid in a device for extracorporeal blood treatment, whereby fluid is conveyed by a peristaltic pump in a fluid system from a low-pressure side to a high-pressure side in that an elastically deformable fluid line positioned between the low-pressure side and the high-pressure side is deformed between a support surface and at least two squeeze elements of a rotor rotating opposite the support surface in such a way that a conveyance volume section is formed between the squeeze elements, whereby a fluid pressure value in the fluid system is detected for the conveyance volume section that is specific to the conveyance volume section, and whereby the detected conveyance-volume-specific fluid pressure value of a conveyance cycle n is compared with the detected conveyance-volume-specific fluid pressure value of a previous conveyance cycle n−x.