CA2162032A1 - Blood pump - Google Patents

Blood pump

Info

Publication number
CA2162032A1
CA2162032A1 CA002162032A CA2162032A CA2162032A1 CA 2162032 A1 CA2162032 A1 CA 2162032A1 CA 002162032 A CA002162032 A CA 002162032A CA 2162032 A CA2162032 A CA 2162032A CA 2162032 A1 CA2162032 A1 CA 2162032A1
Authority
CA
Canada
Prior art keywords
blood
pump
centrifugal
pumped
pumping section
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
CA002162032A
Other languages
French (fr)
Other versions
CA2162032C (en
Inventor
Donald A. Raible
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.)
Baxter International Inc
Original Assignee
Donald A. Raible
Baxter International Inc.
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 Donald A. Raible, Baxter International Inc. filed Critical Donald A. Raible
Publication of CA2162032A1 publication Critical patent/CA2162032A1/en
Application granted granted Critical
Publication of CA2162032C publication Critical patent/CA2162032C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2277—Rotors specially for centrifugal pumps with special measures for increasing NPSH or dealing with liquids near boiling-point
    • 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
    • A61M60/113—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body incorporated within extracorporeal blood circuits or systems in other functional devices, e.g. dialysers or heart-lung machines
    • 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
    • A61M60/20—Type thereof
    • A61M60/205—Non-positive displacement blood pumps
    • A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
    • A61M60/221—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having both radial and axial components, e.g. mixed flow pumps
    • 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
    • A61M60/30—Medical purposes thereof other than the enhancement of the cardiac output
    • A61M60/36—Medical purposes thereof other than the enhancement of the cardiac output for specific blood treatment; for specific therapy
    • A61M60/38—Blood oxygenation
    • 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
    • A61M60/403—Details relating to driving for non-positive displacement blood pumps
    • A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
    • A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
    • A61M60/414—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
    • 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
    • A61M60/403—Details relating to driving for non-positive displacement blood pumps
    • A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
    • A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
    • A61M60/416—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted directly by the motor rotor drive shaft
    • 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
    • A61M60/403—Details relating to driving for non-positive displacement blood pumps
    • A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
    • 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
    • A61M60/50—Details relating to control
    • A61M60/508—Electronic control means, e.g. for feedback regulation
    • A61M60/515—Regulation using real-time patient data
    • 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
    • A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
    • A61M60/804—Impellers
    • A61M60/806—Vanes or blades
    • 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
    • A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
    • A61M60/818—Bearings
    • A61M60/825—Contact bearings, e.g. ball-and-cup or pivot bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • F05B2260/604—Vortex non-clogging type pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/90—Rotary blood pump

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Medical Informatics (AREA)
  • Emergency Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • External Artificial Organs (AREA)

Abstract

A dynamic blood pump includes a rotating core member and rotating ring portion effective to pre-spin blood before the blood enteres helical pumping channels of the pump. The blood is pumped and further rotated as it moves axially along the helical channels toward a centrifugal section of the pump. At the centrifugal pumping section circumferential velocity differentials are also controlled to diminish damage to the blood. Outwardly of the centrifugal pumping section, a forced-vortex pumping section communicates the pumped blood to an exit port.
CA002162032A 1993-06-28 1994-06-28 Blood pump Expired - Fee Related CA2162032C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/083,405 US5368438A (en) 1993-06-28 1993-06-28 Blood pump
US08/083,405 1993-06-28
PCT/US1994/007305 WO1995000186A1 (en) 1993-06-28 1994-06-28 Blood pump

Publications (2)

Publication Number Publication Date
CA2162032A1 true CA2162032A1 (en) 1995-01-05
CA2162032C CA2162032C (en) 2002-01-29

Family

ID=22178092

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002162032A Expired - Fee Related CA2162032C (en) 1993-06-28 1994-06-28 Blood pump

Country Status (5)

Country Link
US (2) US5368438A (en)
EP (1) EP0706403B1 (en)
CA (1) CA2162032C (en)
DE (1) DE69431204T2 (en)
WO (1) WO1995000186A1 (en)

Families Citing this family (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501215C2 (en) * 1992-09-02 1994-12-12 Oeyvind Reitan catheter Pump
US5368438A (en) * 1993-06-28 1994-11-29 Baxter International Inc. Blood pump
US5947892A (en) * 1993-11-10 1999-09-07 Micromed Technology, Inc. Rotary blood pump
US5527159A (en) * 1993-11-10 1996-06-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Rotary blood pump
US5643215A (en) * 1995-02-24 1997-07-01 The Research Foundation Of State University Of New York Gas exchange apparatus and method
US5770149A (en) * 1995-10-31 1998-06-23 Baxter International Extracorporeal blood oxygenation system having integrated blood pump, heat exchanger and membrane oxygenator
US6254359B1 (en) * 1996-05-10 2001-07-03 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for providing a jewel bearing for supporting a pump rotor shaft
US6123725A (en) * 1997-07-11 2000-09-26 A-Med Systems, Inc. Single port cardiac support apparatus
US6889082B2 (en) * 1997-10-09 2005-05-03 Orqis Medical Corporation Implantable heart assist system and method of applying same
US6162017A (en) * 1999-04-14 2000-12-19 Cardiovascular Innovations Llc Blood pump
JP2001207988A (en) * 2000-01-26 2001-08-03 Nipro Corp Magnetic driving type axial flow pump
US8012079B2 (en) 2004-08-13 2011-09-06 Procyrion, Inc. Method and apparatus for long-term assisting a left ventricle to pump blood
US7972122B2 (en) * 2005-04-29 2011-07-05 Heartware, Inc. Multiple rotor, wide blade, axial flow pump
US8419609B2 (en) 2005-10-05 2013-04-16 Heartware Inc. Impeller for a rotary ventricular assist device
US7878967B1 (en) * 2005-10-06 2011-02-01 Sanjaya Khanal Heart failure/hemodynamic device
US8672611B2 (en) 2006-01-13 2014-03-18 Heartware, Inc. Stabilizing drive for contactless rotary blood pump impeller
JP5155186B2 (en) 2006-01-13 2013-02-27 ハートウェア、インコーポレイテッド Rotary blood pump
ES1063777Y (en) 2006-09-18 2007-03-01 Uriarte Genaro Arana PERFECTED CONVECTION RADIATOR
EP2131888B1 (en) 2007-02-26 2017-04-05 HeartWare, Inc. Intravascular ventricular assist device
US20090204078A1 (en) * 2008-02-13 2009-08-13 Boston Scientific Scimed, Inc. Manifold and Valve Seal for Use with a Medical Device
AU2009302471B2 (en) 2008-10-06 2015-03-19 Indiana University Research And Technology Corporation Methods and apparatus for active or passive assistance in the circulatory system
US8152464B2 (en) * 2008-11-20 2012-04-10 Anderson Jr Winfield Scott Tapered helical auger turbine to convert hydrokinetic energy into electrical energy
US8282352B2 (en) 2008-11-20 2012-10-09 Anderson Jr Winfield Scott Tapered helical auger turbine to convert hydrokinetic energy into electrical energy
US7728454B1 (en) * 2008-11-20 2010-06-01 Anderson Jr Winfield Scott Tapered helical auger turbine to convert hydrokinetic energy into electrical energy
EP2194278A1 (en) 2008-12-05 2010-06-09 ECP Entwicklungsgesellschaft mbH Fluid pump with a rotor
EP2216059A1 (en) 2009-02-04 2010-08-11 ECP Entwicklungsgesellschaft mbH Catheter device with a catheter and an actuation device
EP2229965A1 (en) 2009-03-18 2010-09-22 ECP Entwicklungsgesellschaft mbH Fluid pump with particular form of a rotor blade
EP2246078A1 (en) 2009-04-29 2010-11-03 ECP Entwicklungsgesellschaft mbH Shaft assembly with a shaft which moves within a fluid-filled casing
EP2248544A1 (en) 2009-05-05 2010-11-10 ECP Entwicklungsgesellschaft mbH Fluid pump with variable circumference, particularly for medical use
EP2266640A1 (en) 2009-06-25 2010-12-29 ECP Entwicklungsgesellschaft mbH Compressible and expandable turbine blade for a fluid pump
EP2282070B1 (en) 2009-08-06 2012-10-17 ECP Entwicklungsgesellschaft mbH Catheter device with a coupling device for a drive device
EP2298371A1 (en) 2009-09-22 2011-03-23 ECP Entwicklungsgesellschaft mbH Function element, in particular fluid pump with a housing and a transport element
EP2298373A1 (en) 2009-09-22 2011-03-23 ECP Entwicklungsgesellschaft mbH Fluid pump with at least one turbine blade and a seating device
DK3441616T3 (en) 2009-09-22 2023-05-30 Ecp Entw Mbh COMPRESSIBLE ROTOR FOR A FLUID PUMP
EP2298372A1 (en) 2009-09-22 2011-03-23 ECP Entwicklungsgesellschaft mbH Rotor for an axial pump for transporting a fluid
EP2314330A1 (en) 2009-10-23 2011-04-27 ECP Entwicklungsgesellschaft mbH Flexible shaft arrangement
EP2314331B1 (en) 2009-10-23 2013-12-11 ECP Entwicklungsgesellschaft mbH Catheter pump arrangement and flexible shaft arrangement with a cable core
EP2338541A1 (en) 2009-12-23 2011-06-29 ECP Entwicklungsgesellschaft mbH Radial compressible and expandable rotor for a fluid pump
EP2338540A1 (en) 2009-12-23 2011-06-29 ECP Entwicklungsgesellschaft mbH Delivery blade for a compressible rotor
EP2338539A1 (en) 2009-12-23 2011-06-29 ECP Entwicklungsgesellschaft mbH Pump device with a detection device
EP2347778A1 (en) 2010-01-25 2011-07-27 ECP Entwicklungsgesellschaft mbH Fluid pump with a radially compressible rotor
EP2363157A1 (en) 2010-03-05 2011-09-07 ECP Entwicklungsgesellschaft mbH Device for exerting mechanical force on a medium, in particular fluid pump
EP2388029A1 (en) 2010-05-17 2011-11-23 ECP Entwicklungsgesellschaft mbH Pump array
EP2399639A1 (en) 2010-06-25 2011-12-28 ECP Entwicklungsgesellschaft mbH System for introducing a pump
EP2407186A1 (en) 2010-07-15 2012-01-18 ECP Entwicklungsgesellschaft mbH Rotor for a pump, produced with an initial elastic material
EP2407187A3 (en) 2010-07-15 2012-06-20 ECP Entwicklungsgesellschaft mbH Blood pump for invasive application within the body of a patient
EP2407185A1 (en) 2010-07-15 2012-01-18 ECP Entwicklungsgesellschaft mbH Radial compressible and expandable rotor for a pump with a turbine blade
FR2963842A1 (en) * 2010-08-13 2012-02-17 Pierre Carrouset Configuration method for creating and manufacturing propellers of e.g. helicopter, involves placing ring on circle, where ring is not maintained in portion that is provided between points of blades, and ring closing periphery of area
EP2422735A1 (en) 2010-08-27 2012-02-29 ECP Entwicklungsgesellschaft mbH Implantable blood transportation device, manipulation device and coupling device
US20120227940A1 (en) * 2011-03-08 2012-09-13 Novel Concepts, Inc. Toroidal Fluid Mover and Associated Heat Sink
EP2497521A1 (en) 2011-03-10 2012-09-12 ECP Entwicklungsgesellschaft mbH Push device for axial insertion of a string-shaped, flexible body
EP2564771A1 (en) 2011-09-05 2013-03-06 ECP Entwicklungsgesellschaft mbH Medicinal product with a functional element for invasive use in the body of a patient
US8926492B2 (en) 2011-10-11 2015-01-06 Ecp Entwicklungsgesellschaft Mbh Housing for a functional element
DK2894343T3 (en) 2014-01-12 2017-12-11 Alfa Laval Corp Ab SELF-TILTING CENTRIFUGAL PUMP
EP2894342B1 (en) * 2014-01-12 2016-12-28 Alfa Laval Corporate AB Self-priming centrifugal pump
CN103977464B (en) * 2014-06-06 2016-08-17 清华大学 A kind of implantable micro-axial blood pump of exit gradual change flow region
KR101792251B1 (en) * 2014-11-26 2017-12-01 선상규 Spiral blade with a wind guide
US10197038B2 (en) * 2015-09-18 2019-02-05 Charles B. Culpepper Helical longitudinal blade turbine system including a funnel throat valve comprising a plurality of semi-circular valve plates
US9759179B2 (en) * 2015-09-18 2017-09-12 Charles B. Culpepper Hydroelectric generator system including helical longitudinal blades forming an open bore and aligned with a current direction
CA2999986A1 (en) 2015-09-25 2017-03-30 Procyrion, Inc. Non-occluding intravascular blood pump providing reduced hemolysis
CN107143527B (en) * 2017-06-06 2023-09-08 湖南司诺精密机械有限公司 Multistage pre-rotation micro screw pump and working flow thereof
FR3071282B1 (en) * 2017-09-21 2022-04-08 Fineheart INTERNAL BLADE TURBINE
FR3071283B1 (en) * 2017-09-21 2022-07-29 Fineheart HEART PUMP EQUIPPED WITH AN INTERNAL BLADES TURBINE
CA3088846A1 (en) * 2018-01-08 2019-07-11 Vadovations, Inc. Heart assist device
DE102018104405A1 (en) 2018-02-27 2019-08-29 Zcc Cutting Tools Europe Gmbh Cutting insert for machining
IL293625A (en) 2019-12-03 2022-08-01 Procyrion Inc Blood pumps
AU2020403115A1 (en) 2019-12-13 2022-07-14 Procyrion, Inc. Support structures for intravascular blood pumps
CN114367034B (en) * 2022-01-22 2023-08-22 上海炫脉医疗科技有限公司 Axial flow blood pump with integrated impeller structure

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US307275A (en) * 1884-10-28 edmondson
US1226278A (en) * 1914-05-22 1917-05-15 Frederick E Teves Salt-shaker pulverizer.
FR1118405A (en) * 1953-09-30 1956-06-06 A Marrel Ets Improvements to seals for hydraulic cylinders and the like
US2984189A (en) * 1958-08-07 1961-05-16 Worthington Corp Inducer for a rotating pump
US3087435A (en) * 1961-03-31 1963-04-30 Du Pont Pumping process
DE1264326B (en) * 1965-05-20 1968-03-21 Blaise Rastoin Screw conveyor
USRE28742E (en) * 1967-10-26 1976-03-23 Pumps capable of use as heart pumps
US3970408A (en) * 1967-10-26 1976-07-20 Bio-Medicus, Inc. Apparatus for use with delicate fluids
US3957389A (en) * 1967-10-26 1976-05-18 Bio-Medicus, Inc. Pumping apparatus and process characterized by gentle operation
US4037984A (en) * 1967-10-26 1977-07-26 Bio-Medicus, Inc. Pumping apparatus and process characterized by gentle operation
US3647324A (en) * 1969-12-18 1972-03-07 Edson Howard Rafferty Electrically driven pumps capable of use as heart pumps
CH538410A (en) * 1971-02-17 1973-06-30 L Somers S Brice Flexible device for the transport of granular, powdery or fluid products
US3864055A (en) * 1971-12-06 1975-02-04 Harold D Kletschka Pumps capable of use as heart pumps and blood pumps
US3786996A (en) * 1972-03-20 1974-01-22 Tec Group Axial flow unit
GB1368095A (en) * 1972-05-26 1974-09-25 Filtness O T F Rotary impeller for fluids or a propeller
US3918831A (en) * 1974-02-08 1975-11-11 Chandler Evans Inc Centrifugal pump with variable impeller
JPS57105587A (en) * 1980-12-22 1982-07-01 Matsushita Refrig Co Compressor for refrigerant
US4449895A (en) * 1980-12-23 1984-05-22 Matsushita Reiki Co., Ltd. Refrigerant compressor
DE3280274D1 (en) * 1981-03-18 1991-01-31 Guenther Walter Otto Bramm DEVICE FOR PUMPING WITH A MAGNETICALLY SUSPENDED AND DRIVEN ROTOR.
US4625712A (en) * 1983-09-28 1986-12-02 Nimbus, Inc. High-capacity intravascular blood pump utilizing percutaneous access
US4846152A (en) * 1987-11-24 1989-07-11 Nimbus Medical, Inc. Single-stage axial flow blood pump
US4817586A (en) * 1987-11-24 1989-04-04 Nimbus Medical, Inc. Percutaneous bloom pump with mixed-flow output
DE3776570D1 (en) * 1987-11-26 1992-03-12 Cryomec Ag CENTRIFUGAL PUMP FOR CRYOGENE FLUIDA.
FR2629142A1 (en) * 1988-03-24 1989-09-29 Carrouset Pierre ROTARY MACHINE WITH NON-POSITIVE DISPLACEMENT FOR USE AS A PUMP, COMPRESSOR, PROPELLER OR DRIVE TURBINE
US4908012A (en) * 1988-08-08 1990-03-13 Nimbus Medical, Inc. Chronic ventricular assist system
US4919647A (en) * 1988-10-13 1990-04-24 Kensey Nash Corporation Aortically located blood pumping catheter and method of use
US4877368A (en) * 1988-11-08 1989-10-31 A. Ahlstrom Corporation Fluidizing centrifugal pump
US5049134A (en) * 1989-05-08 1991-09-17 The Cleveland Clinic Foundation Sealless heart pump
US5040944A (en) * 1989-09-11 1991-08-20 Cook Einar P Pump having impeller rotational about convoluted stationary member
GB2239675A (en) * 1989-12-05 1991-07-10 Man Fai Shiu Pump for pumping liquid
JP2649131B2 (en) * 1992-11-18 1997-09-03 神鋼パンテツク株式会社 Stirrer and bottom ribbon blade used for it
US5368438A (en) * 1993-06-28 1994-11-29 Baxter International Inc. Blood pump

Also Published As

Publication number Publication date
US5368438A (en) 1994-11-29
EP0706403A1 (en) 1996-04-17
DE69431204D1 (en) 2002-09-26
CA2162032C (en) 2002-01-29
EP0706403B1 (en) 2002-08-21
US5501574A (en) 1996-03-26
DE69431204T2 (en) 2003-08-07
WO1995000186A1 (en) 1995-01-05

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