Die Erfindung betrifft eine Pumpkammer für medizinische Zwecke, bestehend aus einem Gehäuse, einem Pumpensegment mit Absperrorganen und Anschlußmöglichkeiten für das zu pumpende Medium, einer das Pumpensegment umschließenden elastischen Trennwand, einem Anschluß für Übertragungsmedium sowie einer Entlüftungseinrichtung.The invention relates to a pump chamber for medical purposes,consisting of a housing, a pump segment with shut-off organNEN and connection options for the medium to be pumped, onethe elastic partition wall surrounding the pump segment, oneConnection for transmission medium and a ventilation devicetung.
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 promotedinevitable. The blood should be damaged as little as possiblebecome. With the usual roller pumps, where aPeriodically squeezed the hose by means of rotating rollers and thusthe blood in front of the pinch point is oneNever 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 Volumenverringerung 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 einstellbare Größe des oszillierenden Volumens des Übertragungsmediums der minimale und maximale Querschnitt des Volumens des Pumpsegmentes einstellbar. Durch die Verwendung einer das Pumpsegment umschließenden, 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 toominimize, is with the present invention over theadjustable hydraulic pressure of the transmission mediumPromotion that has low shear effects on the blood andits constituent parts result in only a very small amountRate of hemolysis. Thanks to the variable pump segment in the wall thicknessa course of the filling can be effected such that atPressure build-up in the pumping chamber the cross-sectional and thus volumeReduction begins at the inlet of the pump segment and to the outletprogressively takes place and when the pressure is reduced the cross-sectionaland thus volume increase of the pump segment also fromFeed progresses. In addition, the adjustablere size of the oscillating volume of the transmission mediumminimum and maximum cross section of the volume of the pump segmentadjustable. By using a to enclose the pump segmentßenden, connected to the housing elastic partitionDo not replace the pump segment by venting the housingrequired; it also provides additional securitydamage to the pump segment.
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| DE4221379ADE4221379A1 (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 | 
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| DE4221379ADE4221379A1 (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 | 
| Publication Number | Publication Date | 
|---|---|
| DE4221379A1true DE4221379A1 (en) | 1994-01-05 | 
| Application Number | Title | Priority Date | Filing Date | 
|---|---|---|---|
| DE4221379AWithdrawnDE4221379A1 (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 | Link | 
|---|---|
| DE (1) | DE4221379A1 (en) | 
| 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 | 
| US12297825B2 (en) | 2022-04-14 | 2025-05-13 | Viking Pump, Inc. | Expandable, inner liner pump | 
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|---|---|---|---|---|
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| 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 | 
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| 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 | 
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| 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 | 
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| DE3205449A1 (en)* | 1982-02-16 | 1983-09-01 | Fresenius AG, 6380 Bad Homburg | DEVICE FOR PURIFYING THE BLOOD OF METABOLIC PRODUCTS | 
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| 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 | 
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| SU1690774A1 (en)* | 1989-04-27 | 1991-11-15 | Ереванский Филиал Всесоюзного Научного Центра Хирургии | Artificial ventricle of the heart | 
| Title | 
|---|
| AFFELD* | 
| BÜCHERL. Inkorporierbare Blut- pumen zur assistierten Zirkulation. In: Bio- medizinische Technik, Bd.19,1974,Nr.6,S.208-216* | 
| RUF* | 
| 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 | 
| US12297825B2 (en) | 2022-04-14 | 2025-05-13 | Viking Pump, Inc. | Expandable, inner liner pump | 
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| EP0553401A1 (en) | Perfusion apparatus | |
| DE69737396T2 (en) | HEART RECOVERY | 
| 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 |