DE4221379A1 - Pump chamber for medical use - has incompressible medium filling space between elastic separating wall and housing which has connection with hose for attachment to external devices - Google Patents

Pump chamber for medical use - has incompressible medium filling space between elastic separating wall and housing which has connection with hose for attachment to external devices

Info

Publication number
DE4221379A1
DE4221379A1 DE4221379A DE4221379A DE4221379A1 DE 4221379 A1 DE4221379 A1 DE 4221379A1 DE 4221379 A DE4221379 A DE 4221379A DE 4221379 A DE4221379 A DE 4221379A DE 4221379 A1 DE4221379 A1 DE 4221379A1
Authority
DE
Germany
Prior art keywords
housing
connection
pump
pump chamber
pump segment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE4221379A
Other languages
German (de)
Inventor
Rudolf Flechsig
Herbert Eichfeld
Imke Schlichtkrull
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FLECHSIG RUDOLF PROF DIPL ING
Original Assignee
FLECHSIG RUDOLF PROF DIPL ING
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FLECHSIG RUDOLF PROF DIPL ING filed Critical FLECHSIG RUDOLF PROF DIPL ING
Priority to DE4221379A priority Critical patent/DE4221379A1/en
Publication of DE4221379A1 publication Critical patent/DE4221379A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/104—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body
    • A61M60/109—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/424—Details relating to driving for positive displacement blood pumps
    • A61M60/427—Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/835—Constructional details other than related to driving of positive displacement blood pumps
    • A61M60/837—Aspects of flexible displacement members, e.g. shapes or materials

Abstract

The space around the connection (8), between the elastic separating wall (7) and the housing (1), can be filled with an incompressible medium through the airing device (9). The housing can be connected to external equipment by a tube or hose attached to the connection (8). Frequency and amplitude adjustable incompressible medium is pumped into the housing and extends over the separating wall of the pump segment (2). The fluid is led out through the connection (3,4) to external systems by the locking organs (5,6). USE/ADVANTAGE - Used for pumping blood. Does not allow for contamination of the blood due to squashing of the hose.

Description

Die Erfindung betrifft eine Pumpkammer für medizinische Zwecke, bestehend aus einem Gehäuse, einem Pumpensegment mit Absperrorga­ nen und Anschlußmöglichkeiten für das zu pumpende Medium, einer das Pumpensegment umschließenden elastischen Trennwand, einem Anschluß für Übertragungsmedium sowie einer Entlüftungseinrich­ tung.The invention relates to a pump chamber for medical purposes, consisting of a housing, a pump segment with shut-off organ NEN and connection options for the medium to be pumped, one the elastic partition wall surrounding the pump segment, one Connection for transmission medium and a ventilation device tung.

In verschiedenen Bereichen der Medizin ist die Förderung von Blut unumgänglich. Dabei soll das Blut so wenig wie möglich geschädigt werden. Bei den üblichen Rollenpumpen, bei denen ein Schlauch mittels umlaufender Rollen periodisch gequetscht und damit das Blut vor der Quetschstelle jeweils verdrängt wird, ist eine Schädigung nie ganz auszuschließen.In various areas of medicine, blood is promoted inevitable. The blood should be damaged as little as possible become. With the usual roller pumps, where a Periodically squeezed the hose by means of rotating rollers and thus the blood in front of the pinch point is one Never rule out damage entirely.

Um die mögliche Schädigung zu minimieren, wird mit der vorliegenden Erfindung über den einstellbaren Hydraulikdruck des Übertragungsmediums eine Förderung erzielt, die nur geringe Scherwirkungen auf das Blut und seine Bestandteile bewirkt mit der Folge einer nur sehr geringen Hämolyserate. Durch das in der Wandstärke variable Pumpensegment kann ein Verlauf der Füllung derart bewirkt werden, daß bei Druckaufbau in der Pumpkammer die Querschnitts- und damit Volumen­ verringerung am Zulauf des Pumpensegmentes beginnt und zum Auslauf fortschreitend erfolgt und beim Abbau des Drucks die Querschnitts- und damit Volumenvergrößerung des Pumpensegments ebenfalls vom Zulauf beginnend fortschreitet. Außerdem ist durch die einstellba­ re Größe des oszillierenden Volumens des Übertragungsmediums der minimale und maximale Querschnitt des Volumens des Pumpsegmentes einstellbar. Durch die Verwendung einer das Pumpsegment umschlie­ ßenden, mit dem Gehäuse verbundenen elastischen Trennwand wird bei Auswechseln des Pumpsegments eine Entlüftung des Gehäuses nicht erforderlich; außerdem ist hiermit eine zusätzliche Sicherheit bei einer Beschädigung des Pumpsegments gegeben.To the possible damage too minimize, is with the present invention over the adjustable hydraulic pressure of the transmission medium Promotion that has low shear effects on the blood and its constituent parts result in only a very small amount Rate of hemolysis. Thanks to the variable pump segment in the wall thickness a course of the filling can be effected such that at Pressure build-up in the pumping chamber the cross-sectional and thus volume Reduction begins at the inlet of the pump segment and to the outlet progressively takes place and when the pressure is reduced the cross-sectional and thus volume increase of the pump segment also from Feed progresses. In addition, the adjustable re size of the oscillating volume of the transmission medium minimum and maximum cross section of the volume of the pump segment adjustable. By using a to enclose the pump segment ßenden, connected to the housing elastic partition Do not replace the pump segment by venting the housing required; it also provides additional security damage to the pump segment.

Claims (4)

1. Pumpkammer für medizinische Zwecke bestehend aus einem Gehäuse (1), in dem ein Pumpensegment (2) mit Anschlußmöglichkei­ ten für das zu fördernde Medium (3 und 4) enthalten ist, das Pumpensegment hat zu diesen Anschlüssen jeweils ein Absperrorgan (5 und 6) , das Gehäuse (1) kann so ausgebildet sein, daß das Pumpensegment (2) mit einem Bereich aus hochelastischem Werkstoff vor jeder Anwendung erneuert werden kann und von einer mit dem Gehäuse (1) durch Kleben, Einschnappen o.Ä. verbundenen elasti­ schen Trennwand (7) umschlossen ist, das Gehäuse hat weiterhin einen Anschluß (8) für Druckübertragungsmedium sowie an der Stel­ le, wo sich beim späteren bestimmungsgemäßen Einsatz der höchste Punkt des vom Gehäuse eingeschlossenen Volumens befindet, eine Einrichtung (9) zum Entlüften dieses Volumens, dadurch gekennzeich­ net, daß über den Anschluß (8) der Raum zwischen elastischer Trenn­ wand (7) und Gehäuse (1) mit inkompressiblen Medium mittels der Entlüftungseinrichtung (9) gasblasenfrei gefüllt werden kann.1. Pump chamber for medical purposes consisting of a housing ( 1 ) in which a pump segment ( 2 ) with connection possibilities for the medium to be conveyed ( 3 and 4 ) is contained, the pump segment has a shut-off device for each of these connections ( 5 and 6 ), the housing ( 1 ) can be designed in such a way that the pump segment ( 2 ) can be renewed with an area made of highly elastic material before each application and one of the pump segments ( 1 ) can be replaced by gluing, snapping or the like. connected elastic rule's partition ( 7 ) is enclosed, the housing also has a connection ( 8 ) for pressure transmission medium and at the position where the highest point of the volume enclosed by the housing is later, a device ( 9 ) for venting this volume, characterized in that the space between the elastic partition ( 7 ) and the housing ( 1 ) can be filled with incompressible medium by means of the venting device ( 9 ) without gas bubbles via the connection ( 8 ). 2. Pumpkammer nach Anspruch 1, dadurch gekennzeichnet, daß das Gehäuse (1) mittels Anschluß (8) mit einem Gerät mittels Rohr- oder Schlauchleitung verbunden werden kann, das in Frequenz und Amplitude einstellbar inkompressibles Übertragungsmedium in das Gehäuse hineindrückt bzw. aus dem Gehäuse heraussaugt, damit über die elastische Trennwand (7) das Pumpensegment (2) weitend bzw. zusammendrückend und mittels der Absperrorgane (5 und 6) bei An­ schluß eines externen Systems an den Anschlüssen (3 und 4) einer über diese Anschlüsse zugänglichen Flüssigkeit gefördert wird.2. Pump chamber according to claim 1, characterized in that the housing ( 1 ) by means of connection ( 8 ) can be connected to a device by means of a pipe or hose line, which presses incompressible transmission medium in frequency and amplitude into the housing or out of the housing sucks out, so that via the elastic partition ( 7 ) the pump segment ( 2 ) largely or compressively and by means of the shut-off devices ( 5 and 6 ) at the connection of an external system to the connections ( 3 and 4 ) of a liquid accessible via these connections . 3. Pumpkammer nach Anspruch 1, dadurch gekennzeichnet, daß der hochelastische Bereich des Pumpensegments in der Wandstärke varia­ bel gestaltet wird.3. Pump chamber according to claim 1, characterized in that the highly elastic area of the pump segment with the wall thickness varia is designed. 4. Pumpkammer nach Anspruch 1, dadurch gekennzeichnet, daß das Pumpensegment mit Absperrorganen Teil eines für einmalige Benutzung bestimmten Systems ist, das bei Bedarf in die dafür in geeigneter Weise zu öffnende Pumpkammer eingelegt und nach Benutzung aus dieser entnommen werden kann.4. Pump chamber according to claim 1, characterized in that the Pump segment with shut-off devices part one for one time Use of certain system is that in need for that in appropriately opened pump chamber inserted and after Use can be extracted from this.
DE4221379A 1992-07-02 1992-07-02 Pump chamber for medical use - has incompressible medium filling space between elastic separating wall and housing which has connection with hose for attachment to external devices Withdrawn DE4221379A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4221379A DE4221379A1 (en) 1992-07-02 1992-07-02 Pump chamber for medical use - has incompressible medium filling space between elastic separating wall and housing which has connection with hose for attachment to external devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4221379A DE4221379A1 (en) 1992-07-02 1992-07-02 Pump chamber for medical use - has incompressible medium filling space between elastic separating wall and housing which has connection with hose for attachment to external devices

Publications (1)

Publication Number Publication Date
DE4221379A1 true DE4221379A1 (en) 1994-01-05

Family

ID=6462113

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4221379A Withdrawn DE4221379A1 (en) 1992-07-02 1992-07-02 Pump chamber for medical use - has incompressible medium filling space between elastic separating wall and housing which has connection with hose for attachment to external devices

Country Status (1)

Country Link
DE (1) DE4221379A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2094700A1 (en) * 1995-05-30 1997-01-16 Serv Reg Salud Com Madrid Blood pump and application thereof
DE19702098A1 (en) * 1997-01-22 1998-07-23 Horus Medizinische Artikel Und Heart=lung machine allowing long=term stationary or mobile use
DE10020546A1 (en) * 2000-04-27 2001-11-08 Krankenhausbetr Sgesellschaft Drive device for artificial ventricle to support blood circulation, has hydraulic fluid in working chamber of cylinder and piston arrangement, where piston stroke can be adjusted between two extremes
WO2004105828A3 (en) * 2003-05-30 2005-01-06 Innovamedica S A De C V Universal pneumatic ventricular assist device

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478695A (en) * 1968-02-13 1969-11-18 Mc Donnell Douglas Corp Pulsatile heart pump
DE2619239A1 (en) * 1976-01-09 1977-07-21 Thermo Electron Corp BLOOD PUMP
DE2841175A1 (en) * 1977-09-21 1979-03-29 Roberto Bosio PUMP FOR CREATING AN ARTIFICIAL BLOOD CIRCULATION
CH617495A5 (en) * 1976-11-09 1980-05-30 Nikkiso Co Ltd
US4250872A (en) * 1978-05-25 1981-02-17 Yehuda Tamari Blood pulsating and/or pumping device
DE3205449A1 (en) * 1982-02-16 1983-09-01 Fresenius AG, 6380 Bad Homburg DEVICE FOR PURIFYING THE BLOOD OF METABOLIC PRODUCTS
US4417861A (en) * 1981-08-10 1983-11-29 Monsanto Company Cell culture pumping system
SU1146056A1 (en) * 1982-09-16 1985-03-23 1-Й Московский Ордена Ленина И Ордена Трудового Красного Знамени Медицинский Институт Им.И.М.Сеченова Pump for extracorporeal blood circulation
DE3026117C2 (en) * 1979-07-12 1985-05-30 Noord-Nederlandsche Machinefabriek B.V., Winschoten Peristaltic pump
DE3443768A1 (en) * 1984-06-13 1985-12-19 Feluwa Schlesiger & Co KG, 5531 Mürlenbach HOSE PISTON PUMP
SU1299587A1 (en) * 1985-07-18 1987-03-30 Московский Автомобильно-Дорожный Институт Artificial heart with auricle
DE3690585T1 (en) * 1985-11-12 1988-01-28
DE3428828C2 (en) * 1984-08-04 1989-04-27 Karl-Theo 6652 Bexbach De Braun
SU1690774A1 (en) * 1989-04-27 1991-11-15 Ереванский Филиал Всесоюзного Научного Центра Хирургии Artificial ventricle of the heart

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478695A (en) * 1968-02-13 1969-11-18 Mc Donnell Douglas Corp Pulsatile heart pump
DE2619239A1 (en) * 1976-01-09 1977-07-21 Thermo Electron Corp BLOOD PUMP
CH617495A5 (en) * 1976-11-09 1980-05-30 Nikkiso Co Ltd
DE2841175A1 (en) * 1977-09-21 1979-03-29 Roberto Bosio PUMP FOR CREATING AN ARTIFICIAL BLOOD CIRCULATION
US4250872A (en) * 1978-05-25 1981-02-17 Yehuda Tamari Blood pulsating and/or pumping device
DE3026117C2 (en) * 1979-07-12 1985-05-30 Noord-Nederlandsche Machinefabriek B.V., Winschoten Peristaltic pump
US4417861A (en) * 1981-08-10 1983-11-29 Monsanto Company Cell culture pumping system
DE3205449A1 (en) * 1982-02-16 1983-09-01 Fresenius AG, 6380 Bad Homburg DEVICE FOR PURIFYING THE BLOOD OF METABOLIC PRODUCTS
SU1146056A1 (en) * 1982-09-16 1985-03-23 1-Й Московский Ордена Ленина И Ордена Трудового Красного Знамени Медицинский Институт Им.И.М.Сеченова Pump for extracorporeal blood circulation
DE3443768A1 (en) * 1984-06-13 1985-12-19 Feluwa Schlesiger & Co KG, 5531 Mürlenbach HOSE PISTON PUMP
DE3428828C2 (en) * 1984-08-04 1989-04-27 Karl-Theo 6652 Bexbach De Braun
SU1299587A1 (en) * 1985-07-18 1987-03-30 Московский Автомобильно-Дорожный Институт Artificial heart with auricle
DE3690585T1 (en) * 1985-11-12 1988-01-28
SU1690774A1 (en) * 1989-04-27 1991-11-15 Ереванский Филиал Всесоюзного Научного Центра Хирургии Artificial ventricle of the heart

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
AFFELD *
BÜCHERL. Inkorporierbare Blut- pumen zur assistierten Zirkulation. In: Bio- medizinische Technik, Bd.19,1974,Nr.6,S.208-216 *
RUF *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2094700A1 (en) * 1995-05-30 1997-01-16 Serv Reg Salud Com Madrid Blood pump and application thereof
DE19702098A1 (en) * 1997-01-22 1998-07-23 Horus Medizinische Artikel Und Heart=lung machine allowing long=term stationary or mobile use
DE19702098B4 (en) * 1997-01-22 2004-02-12 HORUS medizinische Artikel und Geräte Mobile heart-lung machine
DE10020546A1 (en) * 2000-04-27 2001-11-08 Krankenhausbetr Sgesellschaft Drive device for artificial ventricle to support blood circulation, has hydraulic fluid in working chamber of cylinder and piston arrangement, where piston stroke can be adjusted between two extremes
DE10020546C2 (en) * 2000-04-27 2002-07-11 Krankenhausbetr Sgesellschaft Artificial ventricular drive device
WO2004105828A3 (en) * 2003-05-30 2005-01-06 Innovamedica S A De C V Universal pneumatic ventricular assist device

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee
8170 Reinstatement of the former position
8141 Disposal/no request for examination