EP1378663B1 - Pompe péristaltique - Google Patents

Pompe péristaltique Download PDF

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Publication number
EP1378663B1
EP1378663B1 EP03014680A EP03014680A EP1378663B1 EP 1378663 B1 EP1378663 B1 EP 1378663B1 EP 03014680 A EP03014680 A EP 03014680A EP 03014680 A EP03014680 A EP 03014680A EP 1378663 B1 EP1378663 B1 EP 1378663B1
Authority
EP
European Patent Office
Prior art keywords
pump
hose
sealing membrane
shaft
connecting rod
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.)
Expired - Lifetime
Application number
EP03014680A
Other languages
German (de)
English (en)
Other versions
EP1378663A2 (fr
EP1378663A3 (fr
Inventor
Dieter Herwig
Reinhard Knuth
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.)
B Braun Melsungen AG
Original Assignee
B Braun Melsungen AG
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 B Braun Melsungen AG filed Critical B Braun Melsungen AG
Publication of EP1378663A2 publication Critical patent/EP1378663A2/fr
Publication of EP1378663A3 publication Critical patent/EP1378663A3/fr
Application granted granted Critical
Publication of EP1378663B1 publication Critical patent/EP1378663B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B43/082—Machines, pumps, or pumping installations having flexible working members having tubular flexible members the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism

Definitions

  • the invention relates to a peristaltic peristaltic pump having a shaft which has a plurality of eccentric discs, each of which carries a bearing and thus moves a pump finger transversely to a pump hose, and with a sealing membrane arranged between the shaft and the pump hose.
  • Peristaltic peristaltic pumps are often used as infusion or transfusion pumps for delivery of liquid substances in the medical field.
  • linear peristaltic pumps in which a straight pump hose is pressed by numerous pump fingers continuously and cyclically against an abutment, so that the liquid in the pump hose in Conveying direction is moved.
  • EP 0 214 443 A1 describes a peristaltic linear peristaltic pump with numerous attached to a shaft eccentric discs. Each eccentric disc carries a ball bearing and acts on a linearly movable pump finger. All of the pump fingers are straddled by a sealing membrane which forms a sealing separation between the drive mechanism and the pump hose. As a result, damage and contamination of the pump hose can be avoided.
  • the inside of the pump is protected against penetrating liquid.
  • a sealing membrane arranged in this way negatively influences the conveying accuracy. It causes a force coupling between adjacent pump fingers, whereby the electrical energy consumption is increased. Part of the restoring forces of the pump hose is required in this membrane arrangement in order to deform the sealing membrane against the pump fingers. This can lead to premature relaxation of the restoring forces.
  • Infusion pumps, such as peristaltic peristaltic pumps should be as small and lightweight as possible. Therefore, it is important to reduce the energy consumption in order to size components such as battery, power supply and drive motor as small as possible. At the same time, the requirement for compliance with the selected delivery rate must be met, even during long infusion times.
  • the invention has for its object to provide a peristaltic peristaltic pump that can be made small format, has low energy requirements and has a good delivery accuracy at long infusion times.
  • the sealing membrane does not span the pump fingers, there is no permanent periodic stretching of the sealing membrane between adjacent pump fingers. As a result, less drive energy is needed. The forces still required to deform the diaphragm need not be applied by the return forces of the pump hose, but are provided by the pump drive. As a result, the delivery rate accuracy is improved over longer infusion times. In addition, the wear of the sealing membrane is reduced.
  • the use of connecting rods allows a simple and small passage through the sealing membrane.
  • the sealing membrane should not be a stretched surface, but a loose pleated membrane, which adapts to the movements of the connecting rods without significant material stresses occur.
  • the invention prevents disturbing influences of the sealing membrane on the conveying accuracy.
  • the sealing membrane is not rolled and not squeezed between pump finger and pump hose.
  • the sealing membrane has folds on both sides of the pump hose, which allow an adaptation to the transverse movements of the connecting rod.
  • a guide plate is preferably provided with a longitudinal receiving channel for the pump hose and with guide channels for the pump fingers. This guide plate is expediently removable for cleaning purposes.
  • a particular embodiment is constructed so that the eccentric discs of the shaft are integrally formed.
  • the shaft thus forms a kind of crankshaft.
  • the outer shell of the eccentric discs can be shaped so that it simultaneously forms the inner raceway of a ball bearing.
  • the connecting rods can be formed directly.
  • the hose pump shown has a pump hose 10 in which the liquid to be pumped is located. This hose is continuously periodically compressed and relieved by numerous pump fingers 11, as in EP 0 214 443 is described.
  • the pump hose 10 is contained in a receiving channel 12 which is formed in a guide plate 13.
  • the guide plate 13 has parallel walls 13 a, 13 b, which laterally bound the receiving channel 12.
  • the receiving channel 12 is connected to a plurality of guide channels 14, in each of which a pump finger 11 is guided transversely to the hose direction.
  • the guide plate 13 is fixed to a front wall 15 of a pump housing 16.
  • the pump housing has a superior door, which forms an abutment 17 for supporting the pump hose 10.
  • the counter-bearing 17 has a projection 18 projecting into the receiving channel 12.
  • a total of about twelve pump fingers 11 are present, which are sinusoidally driven by an eccentric, after which the movements of adjacent pump fingers have a phase difference.
  • the drive of the pump fingers has a parallel to the inserted pump hose 10 extending shaft 20. At this several eccentric discs 21, one for each pump finger 11, attached. On the eccentric disc sits a ball bearing 22 which supports an outer ring 23. The outer ring 23 is connected to a connecting rod 24 which has a connecting rod 25 projecting radially to the outer ring 23. The end of the connecting rod 25 is connected via a hinge 26 with the pump finger 11. While the shaft 20 rotates at a uniform speed, the described eccentric drive causes a sinusoidal reciprocation of the pump finger 11 relative to the pump hose 10.
  • FIG. 1 shows the various positions of the connecting rods 25 at a certain rotational position of the shaft 20.
  • the connecting rods 25 form a period of a sinusoid.
  • the ball bearing 22 has in the present case an inner ring 22a, an outer ring 22b and balls 22c arranged between them, which are contained in a ball cage (not shown).
  • the ball bearing 22 is not provided with its own inner ring 22a and its own outer ring 22b.
  • the inner ring is rather formed directly from the eccentric disc 21.
  • the outer ring of the ball bearing is formed by the outer ring 23 of the connecting rod 24.
  • As a ball bearing plastic ball bearings are preferably used.
  • the sealing membrane 27 extends in the longitudinal direction of the receiving channel 12 and is fastened with its longitudinal edges 27a, 27b on the rear side of the housing wall 15, so that the opening containing the guide plate is closed by the sealing membrane 27 is.
  • the sealing membrane has sealed passages 29 for each connecting rod 25.
  • the connecting rods 25 are cylindrical and of round cross section, so that the seal is relatively easy to perform.
  • the width of the sealing membrane 27 is greater than the width of the opening 30 of the housing wall 15, so that on both sides of the connecting rod 25 wrinkles 31 result.
  • the sealing membrane 27 is not taut but forms a fold structure.
  • the sealing membrane 27 prevents liquid from entering the interior of the housing 16.
  • the guide plate 13 can be removed after opening the door for cleaning purposes. Likewise, the individual pump fingers can be easily removed from the connecting rods 25.
  • the hose pump Since the sealing membrane 27 exerts virtually no force on the pump finger 11 or the connecting rod 25, the hose pump has a low energy consumption. This one is by use the ball bearing 22, which has very low friction losses, still favored.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (7)

  1. Pompe à tuyaux péristaltique comprenant un arbre (20) avec plusieurs disques excentriques (21), chacune portant un palier (22) et, par cela, déplaçant un doigt de pompe (11) transversalement à un tuyau de pompe (10), et comprenant une membrane d'étanchéité (27) disposée entre ledit arbre (20) et ledit tuyau de pompe (10),
    caractérisée en ce
    que les paliers (22) sont respectivement connectés avec une bielle (25) qui engage un doigt de pompe (11) guidé linéairement, et que les doigts de pompe (11) sont disposés au côté de la membrane d'étanchéité (27) tourné vers ledit tuyau de pompe (10) et les bielles (25) traversent ladite membrane d'étanchéité (27).
  2. Pompe à tuyaux péristaltique selon la revendication 1, caractérisée en ce que ladite membrane d'étanchéité (27) comprend des plis latéraux (31) permettant une adaptation aux déplacements transversaux de la bielle (25).
  3. Pompe à tuyaux péristaltique selon la revendication 1 ou 2, caractérisée en ce qu'une plaque de guidage (13) est attachée sur un boitier (16) de manière amovible, ladite plaque comprenant une lumière de réception (12) pour le tuyau de pompe (10), s'étendant dans la direction longitudinale, et des lumières de guidage (14) pour les doigts de pompe (11).
  4. Pompe à tuyaux péristaltique selon la revendication 3, caractérisée en ce qu'un contre-appui (17) pour supporter le tuyau de pompe (10) comprend une saillie (18) saillant dans ladite lumière de réception (12).
  5. Pompe à tuyaux péristaltique selon l'une quelconque des revendications 1-4, caractérisée en ce que les disques excentriques (21) de l'arbre (20) sont formés d'une seule pièce avec ledit arbre.
  6. Pompe à tuyaux péristaltique selon l'une quelconque des revendications 1-5, caractérisée en ce que les disques excentriques (21) forment les bagues intérieures de roulements à billes (22).
  7. Pompe à tuyaux péristaltique selon l'une quelconque des revendications 1-6, caractérisée en ce que la bielle (25) comprend une bague extérieure (23) entourant ledit palier (20).
EP03014680A 2002-07-06 2003-06-27 Pompe péristaltique Expired - Lifetime EP1378663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20210502U DE20210502U1 (de) 2002-07-06 2002-07-06 Peristaltische Schlauchpumpe
DE20210502U 2002-07-06

Publications (3)

Publication Number Publication Date
EP1378663A2 EP1378663A2 (fr) 2004-01-07
EP1378663A3 EP1378663A3 (fr) 2005-01-05
EP1378663B1 true EP1378663B1 (fr) 2011-05-25

Family

ID=29594677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014680A Expired - Lifetime EP1378663B1 (fr) 2002-07-06 2003-06-27 Pompe péristaltique

Country Status (9)

Country Link
US (1) US7217108B2 (fr)
EP (1) EP1378663B1 (fr)
JP (1) JP4235501B2 (fr)
CN (1) CN100394026C (fr)
AT (1) ATE511021T1 (fr)
AU (1) AU2003204825B2 (fr)
CA (1) CA2432774C (fr)
DE (1) DE20210502U1 (fr)
ES (1) ES2366946T3 (fr)

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* Cited by examiner, † Cited by third party
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FR2921443A1 (fr) * 2007-09-20 2009-03-27 Fresenius Vial Soc Par Actions Pompe peristaltique lineaire a doigts ainsi qu'une membrane et un doigt pour une telle pompe
CN101766848B (zh) * 2008-12-29 2013-10-23 北京谊安医疗系统股份有限公司 输液装置
JP5412607B2 (ja) * 2009-04-14 2014-02-12 ノイベルク有限会社 チューブポンプおよびチューブポンプ用チューブ
US8753515B2 (en) 2009-12-05 2014-06-17 Home Dialysis Plus, Ltd. Dialysis system with ultrafiltration control
US9677555B2 (en) 2011-12-21 2017-06-13 Deka Products Limited Partnership System, method, and apparatus for infusing fluid
US8879775B2 (en) 2010-02-17 2014-11-04 Viking At, Llc Smart material actuator capable of operating in three dimensions
US8501009B2 (en) 2010-06-07 2013-08-06 State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University Fluid purification system
JP5614114B2 (ja) * 2010-06-09 2014-10-29 セイコーエプソン株式会社 流体輸送装置
GB2487040A (en) * 2010-11-09 2012-07-11 Timothy Ottiwell Wykeham Waterfield A linear peristaltic pump
KR20130132527A (ko) 2010-12-09 2013-12-04 바이킹 에이티 엘엘씨 제2 스테이지를 갖는 다중암 스마트 재료 액추에이터
US20120257986A1 (en) * 2011-04-11 2012-10-11 Ahmad Momeni Rotary cam actuated linear peristaltic pump
JP2014533133A (ja) 2011-10-07 2014-12-11 ホーム・ダイアリシス・プラス・リミテッドＨｏｍｅ ＤｉａｌｙｓｉｓＰｌｕｓ， Ｌｔｄ． 透析システムのための熱交換流体の精製
US9675756B2 (en) 2011-12-21 2017-06-13 Deka Products Limited Partnership Apparatus for infusing fluid
US11295846B2 (en) 2011-12-21 2022-04-05 Deka Products Limited Partnership System, method, and apparatus for infusing fluid
US10842932B1 (en) 2012-08-08 2020-11-24 Neurowave Systems Inc. Intelligent pharmaceutical delivery system with non-concentric pumping mechanism to reduce flow anomaly and method of using
CN103334918B (zh) * 2013-07-09 2016-03-30 北京科力建元医疗科技有限公司 用于输液泵的拨叉片装置以及输液泵
WO2015100280A1 (fr) 2013-12-24 2015-07-02 Viking At, Llc Actionneur en matériau intelligent amplifié mécaniquement utilisant un assemblage de toile en couches
US20150314055A1 (en) 2014-04-29 2015-11-05 Michael Edward HOGARD Dialysis system and methods
US10265463B2 (en) 2014-09-18 2019-04-23 Deka Products Limited Partnership Apparatus and method for infusing fluid through a tube by appropriately heating the tube
DE102014118924A1 (de) * 2014-12-17 2016-06-23 Qonqave Gmbh Fördervorrichtung
JP7025408B2 (ja) 2016-08-19 2022-02-24 アウトセット・メディカル・インコーポレイテッド 腹膜透析システム及び方法
CN107100813B (zh) * 2017-03-17 2019-01-25 珠海优特智厨科技有限公司 截止阀装置和流体输送设备
DE102017124983A1 (de) * 2017-10-25 2019-04-25 Maschinenfabrik Rieter Ag Changiereinheit, Verfahren zum Betreiben einer Changiereinheit sowie Arbeitsstelle mit einer Changiereinheit
DE102017125632A1 (de) 2017-11-02 2017-12-21 Spetec Gesellschaft für Labor- und Reinraumtechnik mbH Peristaltische Schlauchpumpe
BR112021002737A2 (pt) 2018-08-16 2021-06-08 Deka Products Limited Partnership bomba médica
CN110292676A (zh) * 2019-07-19 2019-10-01 深圳市科曼医疗设备有限公司 输液泵蠕动装置
CN114790977A (zh) * 2020-07-22 2022-07-26 居承 一种使用软质喉管的胶体态介质输送装置
CN114534014A (zh) * 2020-11-18 2022-05-27 感知医疗公司 用于调节患者输液的系统及其组件
CN115228804A (zh) * 2022-08-12 2022-10-25 杨玉翠 一种电路板清理装置
CN115288988B (zh) * 2022-08-25 2023-06-09 湖南比扬医疗科技有限公司 蠕动泵片防水膜和输液泵

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JPS587253A (ja) * 1981-07-04 1983-01-17 テルモ株式会社 薬液注入装置
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AU8807982A (en) * 1981-09-24 1983-03-31 Amf Inc. Linear peristaltic pump
US4482347A (en) * 1982-08-12 1984-11-13 American Hospital Supply Corporation Peristaltic fluid-pumping apparatus
JPS6232968A (ja) * 1985-08-02 1987-02-12 日機装株式会社 輸液ポンプ
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US4755109A (en) * 1987-04-03 1988-07-05 Fisher Scientific Company Inc. Snap-together peristaltic mechanism
US4893991A (en) * 1987-05-27 1990-01-16 Heminway James F Method and means for improving efficiency of peristaltic pumps
DE4035182C1 (fr) * 1990-11-06 1992-01-02 B. Braun Melsungen Ag, 3508 Melsungen, De
DE4244619A1 (de) * 1992-12-31 1994-07-07 Knf Neuberger Gmbh Verfahren zum Betreiben einer Membranpumpe sowie Membranpumpe zum Durchführen des Verfahrens
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DE29724578U1 (de) * 1997-04-18 2002-03-28 Nestle Sa Peristaltische Pumpe

Also Published As

Publication number Publication date
ATE511021T1 (de) 2011-06-15
US20040037723A1 (en) 2004-02-26
JP2004036620A (ja) 2004-02-05
EP1378663A2 (fr) 2004-01-07
CA2432774A1 (fr) 2004-01-06
AU2003204825B2 (en) 2008-12-11
EP1378663A3 (fr) 2005-01-05
CA2432774C (fr) 2010-09-07
ES2366946T3 (es) 2011-10-26
US7217108B2 (en) 2007-05-15
DE20210502U1 (de) 2003-11-20
CN100394026C (zh) 2008-06-11
CN1474054A (zh) 2004-02-11
JP4235501B2 (ja) 2009-03-11
AU2003204825A1 (en) 2004-01-22

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