WO2005030296A3 - Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller - Google Patents

Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller Download PDF

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Publication number
WO2005030296A3
WO2005030296A3 PCT/US2004/031582 US2004031582W WO2005030296A3 WO 2005030296 A3 WO2005030296 A3 WO 2005030296A3 US 2004031582 W US2004031582 W US 2004031582W WO 2005030296 A3 WO2005030296 A3 WO 2005030296A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
impeller
magnets
stator
radially
adjacent
Prior art date
Application number
PCT/US2004/031582
Other languages
French (fr)
Other versions
WO2005030296A2 (en )
Inventor
Paul E Allaire
Don B Olsen
Houston G Wood
Ronald Kipp
Wei Jiang
Zongli Lin
Guoxin Li
Alexandrina Untaroiu
Amy L Throckmorton
Xinwei Song
Steven W Day
Original Assignee
Medforte Res Foundation
Uva Patent Foundation
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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/046Bearings
    • F04D29/048Bearings magnetic; electromagnetic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
    • A61M1/1012Constructional features thereof
    • A61M1/1013Types of bearings
    • A61M1/1015Magnetic bearings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
    • A61M1/1029Drive systems therefor
    • A61M1/1031Drive systems therefor using a motor with canned rotor, i.e. a motor enclosed within a casing along with the rotor so that the motor bearings are lubricated by the blood that is being pumped
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00Axial-flow pumps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/101Non-positive displacement pumps, e.g. impeller, centrifugal, vane pumps
    • A61M1/1012Constructional features thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/1086Regulating or controlling systems therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
    • A61M1/12Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps implantable into the body
    • A61M1/122Heart assist devices, i.e. for assisting an ailing heart, using additional pumping means in the blood circuit

Abstract

A blood pump (10) has an impeller (14) rotatably disposed and magnetically suspended within a cavity (22) of a stator (18) by a plurality of magnetic bearings (40, 50, 60) including an axial bearing (40) to support the impeller axially in the cavity. The axial bearing includes adjacent impeller magnets (44a, b & c) and adjacent stator magnets (42a, b & c) with axially aligned polarities and reverse polarities with respect to adjacent magnets. A motor (150) includes impeller magnets (154) on the impeller and coils and poles (158, 162) associated with the stator. Radial permanent magnet and electromagnetic bearings (50, 60) are also included. The magnetic bearings and the motor have stator magnets or coils and poles disposed radially across the fluid passage from corresponding impeller magnets to define an annular gap positioned radially between the impeller and the stator, and positioned radially between all of the plurality of magnetic bearings, creating a straight through blood path without secondary flow paths.
PCT/US2004/031582 2003-09-25 2004-09-27 Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller WO2005030296A3 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US50602303 true 2003-09-25 2003-09-25
US60/506,023 2003-09-25
US10949884 US7070398B2 (en) 2003-09-25 2004-09-24 Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller
US10950176 US7229258B2 (en) 2003-09-25 2004-09-24 Streamlined unobstructed one-pass axial-flow pump
US10/950,176 2004-09-24
US10/949,884 2004-09-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200411001809 DE112004001809T5 (en) 2003-09-25 2004-09-27 Axial-flow with a suspended magnetically, radially and axially stabilized impeller

Publications (2)

Publication Number Publication Date
WO2005030296A2 true WO2005030296A2 (en) 2005-04-07
WO2005030296A3 true true WO2005030296A3 (en) 2005-06-23

Family

ID=34397022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/031582 WO2005030296A3 (en) 2003-09-25 2004-09-27 Axial-flow blood pump with magnetically suspended, radially and axially stabilized impeller

Country Status (2)

Country Link
DE (1) DE112004001809T5 (en)
WO (1) WO2005030296A3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8237391B2 (en) 2007-07-17 2012-08-07 Brooks Automation, Inc. Substrate processing apparatus with motors integral to chamber walls
US8267636B2 (en) 2007-05-08 2012-09-18 Brooks Automation, Inc. Substrate transport apparatus
US8803513B2 (en) 2007-06-27 2014-08-12 Brooks Automation, Inc. Multiple dimension position sensor

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8419609B2 (en) 2005-10-05 2013-04-16 Heartware Inc. Impeller for a rotary ventricular assist device
US8283813B2 (en) 2007-06-27 2012-10-09 Brooks Automation, Inc. Robot drive with magnetic spindle bearings
US9752615B2 (en) 2007-06-27 2017-09-05 Brooks Automation, Inc. Reduced-complexity self-bearing brushless DC motor
US8823294B2 (en) 2007-06-27 2014-09-02 Brooks Automation, Inc. Commutation of an electromagnetic propulsion and guidance system
US8489190B2 (en) 2007-10-08 2013-07-16 Ais Gmbh Aachen Innovative Solutions Catheter device
DE502007005973D1 (en) 2007-10-08 2011-01-27 Ais Gmbh Aachen Innovative Solutions Catheter device
EP2319552B1 (en) 2009-11-06 2014-01-08 Berlin Heart GmbH Blood pump
US9775936B2 (en) 2010-10-18 2017-10-03 WorldHeart Corp. Blood pump with separate mixed-flow and axial-flow impeller stages, components therefor and related methods
CN102743801A (en) * 2011-04-19 2012-10-24 薛恒春 Magnetic fluid suspension type axial blood pump without shaft ends
CN108514661A (en) * 2011-05-05 2018-09-11 柏林心脏有限公司 Blood pump
US9421311B2 (en) 2012-07-03 2016-08-23 Thoratec Corporation Motor assembly for catheter pump
DE102013008089A1 (en) 2013-05-10 2014-11-13 Jan Wilbert Magnetically driven pump system with wear-free magnetically stored impeller
US10111994B2 (en) * 2013-05-14 2018-10-30 Heartware, Inc. Blood pump with separate mixed-flow and axial-flow impeller stages and multi-stage stators
GB201311494D0 (en) * 2013-06-27 2013-08-14 Oslo Universitetssykehus Hf Monitoring of a cardiac assist device
DE102015222199A1 (en) * 2015-11-11 2017-05-11 Robert Bosch Gmbh Heart assist pump, method of operating a heart-assist pump and control unit
CN105709287A (en) * 2016-04-12 2016-06-29 上海理工大学 Electromagnetic coil driving type blood pump system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5507629A (en) * 1994-06-17 1996-04-16 Jarvik; Robert Artificial hearts with permanent magnet bearings
US5928131A (en) * 1997-11-26 1999-07-27 Vascor, Inc. Magnetically suspended fluid pump and control system
US6015272A (en) * 1996-06-26 2000-01-18 University Of Pittsburgh Magnetically suspended miniature fluid pump and method of designing the same
US6234772B1 (en) * 1999-04-28 2001-05-22 Kriton Medical, Inc. Rotary blood pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5507629A (en) * 1994-06-17 1996-04-16 Jarvik; Robert Artificial hearts with permanent magnet bearings
US6015272A (en) * 1996-06-26 2000-01-18 University Of Pittsburgh Magnetically suspended miniature fluid pump and method of designing the same
US5928131A (en) * 1997-11-26 1999-07-27 Vascor, Inc. Magnetically suspended fluid pump and control system
US6234772B1 (en) * 1999-04-28 2001-05-22 Kriton Medical, Inc. Rotary blood pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8267636B2 (en) 2007-05-08 2012-09-18 Brooks Automation, Inc. Substrate transport apparatus
US8803513B2 (en) 2007-06-27 2014-08-12 Brooks Automation, Inc. Multiple dimension position sensor
US8237391B2 (en) 2007-07-17 2012-08-07 Brooks Automation, Inc. Substrate processing apparatus with motors integral to chamber walls

Also Published As

Publication number Publication date Type
WO2005030296A2 (en) 2005-04-07 application
DE112004001809T5 (en) 2006-11-23 application

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