EP0638322A1 - Pompe à galets - Google Patents

Pompe à galets Download PDF

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Publication number
EP0638322A1
EP0638322A1 EP94112501A EP94112501A EP0638322A1 EP 0638322 A1 EP0638322 A1 EP 0638322A1 EP 94112501 A EP94112501 A EP 94112501A EP 94112501 A EP94112501 A EP 94112501A EP 0638322 A1 EP0638322 A1 EP 0638322A1
Authority
EP
European Patent Office
Prior art keywords
pump
roller
curvature
rollers
bearing wall
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.)
Granted
Application number
EP94112501A
Other languages
German (de)
English (en)
Other versions
EP0638322B1 (fr
Inventor
Erwin Dr.-Ing. Knott
Andreas Hahn
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.)
Stockert Instrumente GmbH
Original Assignee
Stockert Instrumente GmbH
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 Stockert Instrumente GmbH filed Critical Stockert Instrumente GmbH
Publication of EP0638322A1 publication Critical patent/EP0638322A1/fr
Application granted granted Critical
Publication of EP0638322B1 publication Critical patent/EP0638322B1/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
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Definitions

  • the invention relates to a roller pump for medical technology, in particular for pumping blood in extracorporeal circuits.
  • This roller pump has a stator with a cylindrical cavity, the wall of which, referred to in the technical field as a pump bed, is designed as a bearing wall for a pump hose which is guided along the central longitudinal axis of the cavity.
  • a pump rotor Arranged in the pump stator is a pump rotor which can be rotated about its central longitudinal axis and which has rollers which are rotatably mounted on roller carriers and which can be rolled off the tube when the rotor rotates while compressing the tube.
  • the bearing wall of the pump rotor has an opening with an inlet and an outlet area for the hose, in which areas this bearing wall withdraws from the circular track of the pump rollers in a curvature in the same direction as this track.
  • a roller pump of this type is known from DE-B-33 26 786.
  • such a roller pump has two rollers which are diametrically opposed to one another with respect to the axis of rotation of the rotor. Over a large part of the circumference of the bearing wall, the pump rollers press the pump hose together in such a way that the interior of the pump hose is occluded liquid-tight at this point.
  • the pump rollers roll when the stator rotates, the occlusions of the tube move with the rollers, the liquid in the tube before the occlusions being transported in the direction of rotation of the stator.
  • the hose In the area of the inlet and outlet opening, the hose returns from the roller conveyor, as a result of which the rollers in the outlet area of the pump stator located in front of this opening in the rotor direction are increasingly lifted off the hose, while they are increasingly pressed into the hose in the inlet area following in the direction of rotation. Due to the arrangement of at least two pump rollers, at least one roller presses the pump hose together in each position of the rotor, so that a further transport of the conveying medium located in the hose is guaranteed.
  • the roller carriers are pressed resiliently radially outwards against the hose, while the bearing wall of the pump bed in the outlet area has a curvature in the same direction as the circular path of the rollers, which has a radius of curvature that increases continuously in the direction of rotation of the rollers.
  • This is intended to ensure a large degree of independence from the cross section of the pump hose used and, in the case of changing operating states, to ensure an occlusion of the pump hose with a defined spring force, and to substantially reduce pressure pulsations in the delivery medium.
  • This design of the curvature in the outlet area of the bearing wall extends the roll out of the pump hose over a larger angle of rotation.
  • the pumped medium in the pump hose on the pressure side has the option of slowly and continuously compensating for the volume increase inside the hose caused by the pump rollers swiveling out of the hose and thus by lifting its occlusion, which results in reduced pulsation behavior.
  • the invention is therefore based on the object of providing a roller pump with a delivery behavior which is optimized with regard to avoiding possible blood damage, in which the compensation of the tube volume taken up by the roller takes place in the longest possible period of time or over the largest possible rotation angle of the roller carrier and the unavoidable Lowering the pump flow has flat gradients.
  • the bearing wall of the stator in the inlet area of the pump hose and the conveying medium therein has a constantly increasing radius of curvature in the running direction of the pump rollers and in the outlet area has a continuously decreasing radius of curvature in the running direction of the rollers, whereby these radii of curvature are greater than the radius of curvature in the area between the entry and exit areas.
  • the radius of curvature can jump at the transition between the working area and the entry or exit area of the bearing wall of the stator, from a smaller radius of the working area to a substantially larger radius of the entry and exit area.
  • the centers of the circles of the radii of curvature can lie in the entry and exit region of the bearing wall on a curve which curves from a plane extending through the central axis of the cavity of the stator parallel to the plane of its inlet and outlet opening to this inlet and outlet opening. It is useful that the distance between the axes of the Pump rollers from the axis of rotation of the pump rotor is immutable.
  • the bearing wall has one or more radially movable segments in the entry and exit area.
  • This adjustability allows the curvature to be adapted to different hose diameters and hose geometries.
  • a certain pressure profile can be generated within limits.
  • the angular velocity of the roller carriers carrying the rollers can be adjusted or regulated depending on the roller position in relation to the curvature of the entry and exit area.
  • the measured pressure curve can also be included in this regulation.
  • the protection of the hose can be increased by the fact that all pump rollers of the pump stator are mutually drivable via a drive connection, so that the pump rollers located in the area of the inlet and outlet opening of the pump stator do not lose their rotational speed, but instead lose their rotational speed at a sustained rotational speed as you walk past the inlet and outlet opening in the inlet area of the bearing wall, swivel it back into the pump hose.
  • this roller position there is no acceleration of the pump roller from approximately zero to its full speed given when the tube is unrolled, so that there is no frictional wear on the outer wall of the pump tube (see also page 10, last paragraph).
  • the stator denoted by 1 in FIG. 1 has a cylindrical cavity 2, the wall of which serves as a bearing wall (3) for a pump hose 5 which is guided along it around the central longitudinal axis 4 of the cavity.
  • a pump rotor 9 which is rotatable about the central longitudinal axis 4 and which is arranged on its axis has radially projecting roller carrier 7, at the ends of which rollers 8 are rotatably mounted.
  • rollers are arranged on the roller carriers in such a way that they are pressed into the hose 5 over a rotation angle range of the pump rotor of approximately 180 ° in such a way that they completely occlude them in places so that no liquid can flow through the occluded hose location in the hose.
  • the roller pressed into the tube pushes the occlusion of the tube in front of it, whereby the amount of liquid in front of the occlusion point is transported forward in the tube.
  • the roller carriers can be radially displaceable slides on guides which are spring-loaded radially outwards.
  • the curvature of the bearing wall 3 around the center of the circle 4 has an inlet area 10 which extends from the inlet and outlet opening 6 for the tube 5 into the stator to a point A at which the pump rollers completely occlude the tube 5. In the exemplary embodiment shown in FIG. 1, this is the point that is approximately 90 degrees behind the center of the inlet and outlet opening.
  • This entry area 10 is followed by a work or full support area 11, which extends from the aforementioned angular point over 180 angular degrees to a point B which is approximately 90 angular degrees in front of the center of the entry and exit opening 6.
  • the outlet area 12 begins, which extends to the inlet and outlet opening 6.
  • the pump rollers 8 increasingly lift off from the pump hose 5 as they continue to rotate, whereby the occlusion of the hose is gradually released until the pump rollers are completely out of the pump hose are pivoted out and move over to the entry area 10.
  • the bearing wall in the entry area 10 has a radius of curvature that increases continuously in the running direction of the pump rollers 8 and in the exit area 12 has a radius of curvature that decreases continuously in the direction of travel of the rollers, these radii of curvature being substantially larger than the radius of curvature in the working or full conveying area 11, so that there is a discontinuous jump in the radius of curvature in each case between the working area and the entry or exit area.
  • FIG. 2 shows how the centers of the radii of curvature in the entry area 10 of the bearing wall shift from a radius of curvature C located at the beginning of the entry area 10 in the direction of rotation of the rotor 6 to a radius of curvature E located at the end of the entry area 10.
  • This drive connection is formed by a circumferential belt 13 which runs over drive rollers 14 arranged on the axes of the pump rollers 8 and over tension rollers 15.
  • the tensioning rollers 15 are seated on swivel levers 16 and are pressed outwards against the belt 13 by a tension spring 17 connecting the levers.
  • the pivot lever 16 can also be acted upon by its own tension or compression spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • External Artificial Organs (AREA)
EP94112501A 1993-08-12 1994-08-10 Pompe à galets Expired - Lifetime EP0638322B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4327152 1993-08-12
DE4327152A DE4327152C2 (de) 1993-08-12 1993-08-12 Rollenpumpe

Publications (2)

Publication Number Publication Date
EP0638322A1 true EP0638322A1 (fr) 1995-02-15
EP0638322B1 EP0638322B1 (fr) 1999-10-27

Family

ID=6495062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94112501A Expired - Lifetime EP0638322B1 (fr) 1993-08-12 1994-08-10 Pompe à galets

Country Status (3)

Country Link
US (1) US5470211A (fr)
EP (1) EP0638322B1 (fr)
DE (2) DE4327152C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3364032A1 (fr) * 2017-02-16 2018-08-22 Biosense Webster (Israel) Ltd. Pompe péristaltique à effets triboélectriques réduits
WO2020190961A1 (fr) * 2019-03-18 2020-09-24 Verily Life Sciences Llc Ensembles micropompes péristaltiques et dispositifs, systèmes et procédés associés
EP4166786A1 (fr) * 2021-10-18 2023-04-19 Lrp Ag Pompe péristaltique
US11795941B2 (en) 2018-12-29 2023-10-24 Biosense Webster (Israel) Ltd. Using silicone o-rings in dual action irrigation pump

Families Citing this family (42)

* Cited by examiner, † Cited by third party
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US7148786B2 (en) * 1996-09-30 2006-12-12 Terumo Cardiovascular Systems Corporation Network communication and message protocol for a medical perfusion system
US6099272A (en) * 1997-09-18 2000-08-08 Fsi International Peristaltic pump with flow control
DE19856453C2 (de) * 1998-12-09 2002-04-25 Rheotec Ag Goldach Rollenpumpe zur peristaltischen Förderung von flüssigen oder gasförmigen Medien
DE60014360T3 (de) * 1999-05-12 2009-10-22 Dia Medical A/S Peristaltische fluidpumpe
JP4557452B2 (ja) * 2001-03-13 2010-10-06 日本電産サーボ株式会社 ローラポンプ
AU2002244317A1 (en) * 2001-03-21 2002-10-08 Innovent, Llc. Inverted peristaltic pump
US7645127B2 (en) * 2003-04-29 2010-01-12 Loren Hagen Pulseless peristaltic pump
DE10334516B4 (de) 2003-07-29 2006-06-14 Sorin Group Deutschland Gmbh Anzeige- und Bedienvorrichtung für medizintechnische Geräte und Anzeige-/Bedieneinheit dafür
US8565839B2 (en) 2005-10-13 2013-10-22 Abbott Medical Optics Inc. Power management for wireless devices
US8380126B1 (en) 2005-10-13 2013-02-19 Abbott Medical Optics Inc. Reliable communications for wireless devices
NL2000058C2 (nl) * 2006-04-21 2007-10-23 Bredel Hose Pumps B V Peristaltische pomp.
US9033940B2 (en) 2006-11-09 2015-05-19 Abbott Medical Optics Inc. Eye treatment system with fluidics pump interface
US10959881B2 (en) 2006-11-09 2021-03-30 Johnson & Johnson Surgical Vision, Inc. Fluidics cassette for ocular surgical system
US9522221B2 (en) 2006-11-09 2016-12-20 Abbott Medical Optics Inc. Fluidics cassette for ocular surgical system
US8414534B2 (en) * 2006-11-09 2013-04-09 Abbott Medical Optics Inc. Holding tank devices, systems, and methods for surgical fluidics cassette
US9295765B2 (en) 2006-11-09 2016-03-29 Abbott Medical Optics Inc. Surgical fluidics cassette supporting multiple pumps
US8491528B2 (en) 2006-11-09 2013-07-23 Abbott Medical Optics Inc. Critical alignment of fluidics cassettes
US20110088151A1 (en) * 2007-04-17 2011-04-21 Semra Peksoz Firefighter's turnout coat with seamless collar
US10596032B2 (en) 2007-05-24 2020-03-24 Johnson & Johnson Surgical Vision, Inc. System and method for controlling a transverse phacoemulsification system with a footpedal
US10363166B2 (en) 2007-05-24 2019-07-30 Johnson & Johnson Surgical Vision, Inc. System and method for controlling a transverse phacoemulsification system using sensed data
US10485699B2 (en) 2007-05-24 2019-11-26 Johnson & Johnson Surgical Vision, Inc. Systems and methods for transverse phacoemulsification
US8162633B2 (en) 2007-08-02 2012-04-24 Abbott Medical Optics Inc. Volumetric fluidics pump with translating shaft path
US10342701B2 (en) 2007-08-13 2019-07-09 Johnson & Johnson Surgical Vision, Inc. Systems and methods for phacoemulsification with vacuum based pumps
US8197236B2 (en) * 2008-04-25 2012-06-12 Medtronic, Inc. Adjustable roller pump rotor
WO2010054207A2 (fr) 2008-11-07 2010-05-14 Abbott Medical Optics Inc. Impulsion automatique de différents niveaux d’aspiration à une sonde oculaire
EP2373266B1 (fr) 2008-11-07 2020-04-29 Johnson & Johnson Surgical Vision, Inc. Dispositif à cassette chirurgicale
EP2376035B1 (fr) 2008-11-07 2016-12-14 Abbott Medical Optics Inc. Changement automatique entre différents niveaux d'aspiration appliqués à une sonde oculaire et/ou différentes pompes utilisées avec cette dernière
US9795507B2 (en) 2008-11-07 2017-10-24 Abbott Medical Optics Inc. Multifunction foot pedal
US10349925B2 (en) 2008-11-07 2019-07-16 Johnson & Johnson Surgical Vision, Inc. Method for programming foot pedal settings and controlling performance through foot pedal variation
EP2373265B1 (fr) 2008-11-07 2016-03-09 Abbott Medical Optics Inc. Contrôle de plusieurs pompes
EP2341878B1 (fr) 2008-11-07 2017-06-21 Abbott Medical Optics Inc. Etalonnage de dispositif semi-automatique
EP2376036B1 (fr) 2008-11-07 2018-01-03 Abbott Medical Optics Inc. Commande de pédale de pied ajustable pour chirurgie ophtalmique
US9492317B2 (en) 2009-03-31 2016-11-15 Abbott Medical Optics Inc. Cassette capture mechanism
US8876757B2 (en) 2009-11-12 2014-11-04 Abbott Medical Optics Inc. Fluid level detection system
GB201102609D0 (en) * 2011-02-15 2011-03-30 Tristel Plc Pump for sterilisation apparatus
AU2013235701B2 (en) 2012-03-17 2017-02-09 Johnson & Johnson Surgical Vision, Inc. Surgical cassette
US9746412B2 (en) 2012-05-30 2017-08-29 Iris International, Inc. Flow cytometer
US9421322B2 (en) * 2012-11-14 2016-08-23 Covidien Lp Feeding set with cassette and related methods therefor
USD762850S1 (en) 2013-04-23 2016-08-02 Covidien Lp Cassette
DE102014112324A1 (de) * 2014-08-27 2016-03-03 Stockert Gmbh Schlauchpumpe
EP3017836B1 (fr) 2014-11-04 2020-06-10 Micrel Medical Devices S.A. Pompe péristaltique rotative sans pulse
CN106837758A (zh) * 2017-04-07 2017-06-13 安徽佳乐建设机械有限公司 一种新型软管泵

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE1553005B2 (de) * 1965-08-03 1973-08-16 Dutler, Hans, Dr , Zurich (Schweiz) Schlauchpumpe
WO1982003426A1 (fr) * 1981-04-07 1982-10-14 Kristensen Hans Saustrup Pompe a rouleaux, de preference pour injection dosee de liquides
DE3726452A1 (de) * 1987-08-08 1989-02-16 Schael Wilfried Schlauchpumpe fuer medizinische zwecke
DE3326786C2 (fr) * 1983-07-25 1989-11-30 Fresenius Ag, 6380 Bad Homburg, De
EP0518290A1 (fr) * 1991-06-10 1992-12-16 Ebner & Co. KG Anlagen und Apparate Pome à tuyau

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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
DE1553005B2 (de) * 1965-08-03 1973-08-16 Dutler, Hans, Dr , Zurich (Schweiz) Schlauchpumpe
WO1982003426A1 (fr) * 1981-04-07 1982-10-14 Kristensen Hans Saustrup Pompe a rouleaux, de preference pour injection dosee de liquides
DE3326786C2 (fr) * 1983-07-25 1989-11-30 Fresenius Ag, 6380 Bad Homburg, De
DE3726452A1 (de) * 1987-08-08 1989-02-16 Schael Wilfried Schlauchpumpe fuer medizinische zwecke
EP0518290A1 (fr) * 1991-06-10 1992-12-16 Ebner & Co. KG Anlagen und Apparate Pome à tuyau

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3364032A1 (fr) * 2017-02-16 2018-08-22 Biosense Webster (Israel) Ltd. Pompe péristaltique à effets triboélectriques réduits
CN108443123A (zh) * 2017-02-16 2018-08-24 韦伯斯特生物官能(以色列)有限公司 具有降低的摩擦电效应的蠕动泵
US10907626B2 (en) 2017-02-16 2021-02-02 Biosense Webster (Israel) Ltd. Peristaltic pump with reduced triboelectric effects
CN108443123B (zh) * 2017-02-16 2022-07-05 韦伯斯特生物官能(以色列)有限公司 具有降低的摩擦电效应的蠕动泵
US11828280B2 (en) 2017-02-16 2023-11-28 Biosense Webster (Israel) Ltd. Peristaltic pump with reduced triboelectric effects
US11795941B2 (en) 2018-12-29 2023-10-24 Biosense Webster (Israel) Ltd. Using silicone o-rings in dual action irrigation pump
WO2020190961A1 (fr) * 2019-03-18 2020-09-24 Verily Life Sciences Llc Ensembles micropompes péristaltiques et dispositifs, systèmes et procédés associés
EP4166786A1 (fr) * 2021-10-18 2023-04-19 Lrp Ag Pompe péristaltique

Also Published As

Publication number Publication date
DE59408855D1 (de) 1999-12-02
EP0638322B1 (fr) 1999-10-27
US5470211A (en) 1995-11-28
DE4327152A1 (de) 1995-02-16
DE4327152C2 (de) 1995-10-19

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