US20030124007A1 - Rotary pump comprising a hydraulically mounted rotor - Google Patents

Rotary pump comprising a hydraulically mounted rotor Download PDF

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Publication number
US20030124007A1
US20030124007A1 US10/239,602 US23960202A US2003124007A1 US 20030124007 A1 US20030124007 A1 US 20030124007A1 US 23960202 A US23960202 A US 23960202A US 2003124007 A1 US2003124007 A1 US 2003124007A1
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US
United States
Prior art keywords
rotor
housing
flow
pump according
conical
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.)
Abandoned
Application number
US10/239,602
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English (en)
Inventor
Heinrich Schima
Helmut Schmallegger
Roland Schistek
Franz Raderer
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.)
PROF DI DR HEINRICH SCHIMA, University of
Original Assignee
PROF DI DR HEINRICH SCHIMA, University of
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 PROF DI DR HEINRICH SCHIMA, University of filed Critical PROF DI DR HEINRICH SCHIMA, University of
Assigned to UNIV. PROF. DI DR. HEINRICH SCHIMA reassignment UNIV. PROF. DI DR. HEINRICH SCHIMA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHISTEK, ROLAND, RADERER, FRANZ, SCHMALLEGGER, HELMUT, SCHIMA, HEINRICH
Publication of US20030124007A1 publication Critical patent/US20030124007A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • A61M60/824—Hydrodynamic or fluid film bearings
    • 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
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
    • A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
    • 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
    • A61M60/226—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
    • A61M60/232—Centrifugal 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
    • A61M60/40—Details relating to driving
    • A61M60/403—Details relating to driving for non-positive displacement blood pumps
    • A61M60/405—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic
    • 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
    • A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor 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
    • A61M60/80—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
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
    • A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
    • 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

Definitions

  • the present invention relates to a rotary pump for moving blood and other shear-sensitive liquids with a rotor journaled hydraulically and, if necessary, magnetically in a housing.
  • Kung and Hart ( Artificial Organs 1997, Vol. 21. No. 7, pp. 645-650) suggest a pump where the journaling is done purely hydraulically by a geometric distribution of gaps above and below the pump that are enlarged and decreased by axial movements of the pump and the changes created thereby in pressure between the rotor and the housing are used for stabilizing the pump.
  • This system functions only with a relatively narrow gap and can be made unstable even if small amounts of blood form deposits.
  • Golding U.S. Pat. Nos. 5,324,177 and 5,370,509 has in addition suggested floating a conical rotor with helical arms on a cone and centering of the rotor by support forces between a flatly shaped rotor inner wall and a cone of the housing end wall. This method requires above all the formation of very small gaps and thus high shear forces, at the same times fluid tends to sit for quite some time in the gap and the centering forces are very modest.
  • Woodward et al proposes a pump whose rotor is hydrodynamically journaled, the rotation body having several cylindrical elements whose angled ends form tapered gaps together with the housing upper surface.
  • the pressures that build up therein or the liquid trapped between the tapering surfaces serves to center the rotor.
  • the conical shape of the housing upper wall ensures radial centering.
  • This invention relates to a preferred system of stabilizing forces, but is disadvantageous in that a small gap in the range of less then 0.3 mm is used which creates considerable shear and which can lead to substantial changes in the flow parameters if there is any deposition of solids.
  • the rotor shapes suggested there create a multiplicity of dead spots and stagnant zones.
  • the present invention therefore has the object of overcoming these disadvantages. Mechanical depositions, dead-water zones or zones of reduced flow velocity and small gaps are to be avoided. The number of parts should be small and the construction simple.
  • the invention is characterized in that the rotor has flow-control surfaces for producing centrifugal flow components and flow components directed against the housing, the centrifugal flow components serving mainly for producing the externally effective throughput and the flow components directed against the housing serving mainly for contact-free journaling and stabilizing of the rotor in the housing.
  • the housing has a conical central part and/or a hollow conical upper part and that the rotor arranged between them is conical.
  • the flow-control surfaces are formed as vanes on a conical inner and/or outer surface of the rotor.
  • the rotor has flow-through rotor holes on which the flow-control surfaces are mounted.
  • FIGS. 1 to 5 show cross sections through various embodiments of the pump and FIG. 6 an oblique view of a rotor.
  • FIG. 7 is a section through the rotor and FIG. 8 an angle view of the section according to line V-V of FIG. 7.
  • FIGS. 9 and 11 show rotors in an oblique view and FIGS. 12, 12, 13 , and 14 the respective sections.
  • FIGS. 15 shows a further embodiment of the rotor and FIGS. 16 and 17 show possible cross sections through the rotor vane. All figures are schematic.
  • FIG. 1 shows a section through the pump.
  • the rotor 1 has as flow surfaces 2 and 4 vanes that produce centrifugal flow components 3 and flow components 5 directed against the housing. To this end these flow surfaces 2 and 4 are formed on a conical base 17 which has rotor openings 18 for flow to the inner vanes 4 .
  • This hollow conical rotor 1 rotates in a pump housing 30 comprised of a housing lower part 19 with a conical middle part 16 and a hollow conical upper part 15 , centering of the hollow conical rotor in the middle part 16 of the housing lower part 19 being effected by the flow components 5 directed against the housing, this flow being preferably axially against the conical upper surface of the middle part 16 .
  • This centering can however also be wholly or additionally effected by flow components ( 5 ) directed against the housing or centrifugally ( 3 ) against the hollow conical upper part 15 .
  • a spiral-shaped outlet passage 20 in the lower housing part 19 leads to an outlet 14 .
  • the rotor holds rotor magnets 6 that preferably transfer rotation energy and that can be individual or formed by a continuous magnetic ring. These rotor magnets work as shown in FIG. 1 with a stator 12 inside the housing lower part 19 having coils 9 creating a rotating magnetic field.
  • An axial offset of the rotor magnets 6 and stator 8 causes the coupling force 21 to be effective at an angle and provide an axial component for additional stabilizing of the rotor 1 , the direction of this axial component being upward or downward by appropriate offset of the stator 12 upward or downward.
  • the rotor 1 has at an inlet 13 an inlet opening 36 that distributes the incoming liquid to both sides of the rotor and against the point of the cone-shaped middle part 16 .
  • the drive can also be an electric motor 26 which drives a rotating disk 24 with magnets 10 by means of a shaft 25 .
  • This embodiment has the advantage that no electrical energy is used to journal the rotor and as a result the axial offset of the disk 24 ensures an axial component for the magnetic force 21 .
  • FIG. 3 shows that the drive can be a disk-rotor motor where the disk 11 with imbedded magnets 10 or a similar multipolar magnetization with a journaled axle 29 simultaneously serves as rotor for the motor-stator 44 and for transmitting magnetic energy 5 to the rotor 1 .
  • the drive 7 can be an externally effective stator 8 that is used instead of or in addition to an internal stator 12 .
  • all embodiments of the drive also have a magnetic stabilizer near the inlet 13 , a ferromagnetic or permanent-magnet ring 27 imbedded in the rotor 1 being provide internally and/or externally with permanent or electromagnets 22 and 28 with coils 23 so as to compensate for any instability caused by flow past the rotor.
  • the ferromagnetic ring 27 can be provided externally with an electrically very conductive layer 34 in order to facilitate the formation of electrical eddy currents which create magnetically centering forces.
  • the position (running characteristic) of the rotor can for example be determined by appropriate position sensors as shown schematically in FIG. 4 at 42 in various positions.
  • position sensors for example Hall-type sensors can be used.
  • induced voltages or the effect of high-frequency feed voltages in the coils can be measured and evaluated, eliminating the need of any further sensors.
  • FIGS. 5 to 15 Various embodiments are described in FIGS. 5 to 15 .
  • FIG. 5 shows an embodiment of the pump with a rotor 1 that is formed of two superposed conical sleeves 31 and 32 that are connected together by centrifugal vanes or flow surfaces 33 .
  • Rotor openings 18 and the outer vanes 4 serve to produce the flow component 5 against the upper part 15 of the housing as well as against the conical middle part 16 of the lower housing part 19 . In this manner the rotor is hydrodynamically stabilized in the housing.
  • FIGS. 6 to 8 show in oblique view, top view, and section the basic shape of a rotor 1 in an embodiment with a conical base part 17 on whose outside are mounted vanes serving as flow surfaces 2 for preferably producing centrifugal flow components.
  • These vanes can have an arched portion 39 known in centrifugal blood pumps and that allows the vanes to be oriented against the rotation direction 40 .
  • the base body 17 has at the inlet side the inlet opening 36 that makes possible direct flow into the point of the conical central part 16 of the housing lower part 19 .
  • the base body is further formed with rotor holes 18 through which the liquid can be move by the vanes 4 against the housing middle part 16 .
  • the effect of the vanes 2 and 4 can be increased by an angling 35 of the opening 18 or when the conical body 17 is thick enough even replaced, in which latter case the vanes 2 and 4 can be eliminated.
  • the flow surfaces are thus only formed by an angling of the edges of the rotor openings 18 .
  • FIGS. 9 and 10 show in angled view and section the also possible variant whereby the vanes 4 for producing the flow component 5 against the housing are on the outer side of the conical base body 17 and the vanes 2 for preferably producing centrifugal flow components 3 are on the inside of the base body 17 .
  • FIGS. 11 to 13 show a rotor with two nested conical sleeves. It makes possible flow against both housing walls 16 and 19 . It is shown in cross section in FIG. 5 and is shown in detail in angled view in FIG. 11, in FIG. 12 in top view, and in FIG. 13 in a section transverse to the axis of the pump.
  • the inner conical sleeve 31 and the outer conical sleeve 32 are connected together by struts 33 that are also effective as flow-control vanes.
  • the rotor holes 18 have edge bevels or vanes ( 4 ) that produce the flow component directed against the housing.
  • the pump according to FIG. 15 also has a rotor where the individual vanes 37 are freestanding without a continuous conical base body. These vanes are either of a wedge-shaped profile (see FIG. 16) or have an angled shape (see FIG. 17), a substantial beveling 37 forming flow-control surfaces.
  • the rotor holes 18 extend to the lower edge 41 of the rotor 1 . This lower edge can also extend at an angle to the flow direction so that it serves as a flow-control surface for reducing the drive component or a flow component for the liquid flow.
  • the ends of the vanes can carry magnets 38 for the drive and additional magnetic journaling.
  • FIGS. 1 to 5 the outlet is always underneath the lower edge 41 .
  • ti can be advantageous to provide two symmetrically opposite outlets or one outlet with two parts, in order to stabilize flow of the liquid.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Mechanical Engineering (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • External Artificial Organs (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US10/239,602 2000-03-24 2001-03-22 Rotary pump comprising a hydraulically mounted rotor Abandoned US20030124007A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0051000A AT412065B (de) 2000-03-24 2000-03-24 Rotationspumpe mit hydraulisch gelagertem rotor
ATA510/2000 2000-03-24

Publications (1)

Publication Number Publication Date
US20030124007A1 true US20030124007A1 (en) 2003-07-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/239,602 Abandoned US20030124007A1 (en) 2000-03-24 2001-03-22 Rotary pump comprising a hydraulically mounted rotor

Country Status (5)

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US (1) US20030124007A1 (de)
EP (1) EP1265655A1 (de)
AT (1) AT412065B (de)
AU (1) AU2001239003A1 (de)
WO (1) WO2001070300A1 (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050107657A1 (en) * 2002-03-08 2005-05-19 Michel Carrier Dual inlet mixed-flow blood pump
US20070004959A1 (en) * 2003-05-11 2007-01-04 Michel Carrier Blood pump with frusto-conical bearing structure
US20100040491A1 (en) * 2005-09-05 2010-02-18 Tokyo Institute Of Technology Disposable centrifugal blood pump with magnetic coupling
US7699588B2 (en) 2003-07-04 2010-04-20 Jostra Ag Centrifugal pump
US20100323916A1 (en) * 2009-01-15 2010-12-23 Guillermo Garcia-Cardena High-Throughput Biological Screening
US20120089225A1 (en) * 2010-10-07 2012-04-12 EverHeart Systems LLC High efficiency blood pump
CN103648538A (zh) * 2011-05-05 2014-03-19 柏林心脏有限公司 血泵
US8905729B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with electro-magnet coupling inside the impeller
US8905728B2 (en) 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with permanent magnet coupling inside the impeller
EP2359007A4 (de) * 2008-12-16 2015-03-04 Cleveland Clinic Foundation Zentrifugalpumpe mit versetzter spirale
JP2015508294A (ja) * 2011-12-03 2015-03-19 インディアナ ユニバーシティ リサーチ アンド テクノロジー コーポレイション 大動脈肺動脈インペラ補助装置及び方法
KR20180037203A (ko) * 2015-08-04 2018-04-11 아비오메드 유럽 게엠베하 혈액 펌프
US10294944B2 (en) 2013-03-08 2019-05-21 Everheart Systems Inc. Flow thru mechanical blood pump bearings
US10905807B2 (en) 2017-07-13 2021-02-02 CORVION, Inc. High efficiency blood pump
EP3812001A1 (de) * 2015-03-18 2021-04-28 Abiomed Europe GmbH Blutpumpe
US11376414B2 (en) 2019-04-10 2022-07-05 Fineheart Heart pump with magnetic coupling and reverse flow
JP2022141796A (ja) * 2016-09-01 2022-09-29 アビオメド インコーポレイテッド 吸い付き防止血液ポンプ入口
US12264677B2 (en) 2007-02-27 2025-04-01 Miracor Medical Sa Device to assist the performance of a heart
US12403297B2 (en) 2021-12-21 2025-09-02 Fineheart Intraventricular heart pump with narrowed head

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US5055005A (en) * 1990-10-05 1991-10-08 Kletschka Harold D Fluid pump with levitated impeller
US6015272A (en) * 1996-06-26 2000-01-18 University Of Pittsburgh Magnetically suspended miniature fluid pump and method of designing the same
US6074180A (en) * 1996-05-03 2000-06-13 Medquest Products, Inc. Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method
US6227817B1 (en) * 1999-09-03 2001-05-08 Magnetic Moments, Llc Magnetically-suspended centrifugal blood pump
US6439845B1 (en) * 2000-03-23 2002-08-27 Kidney Replacement Services, P.C. Blood pump
US6609883B2 (en) * 1997-05-09 2003-08-26 Ventrassist Pty Ltd Rotary pump with hydrodynamically suspended impeller

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FR2451480A1 (fr) * 1979-03-16 1980-10-10 Belenger Jacques Pompe centrifuge medicale
US5324177A (en) 1989-05-08 1994-06-28 The Cleveland Clinic Foundation Sealless rotodynamic pump with radially offset rotor
US4984972A (en) * 1989-10-24 1991-01-15 Minnesota Mining And Manufacturing Co. Centrifugal blood pump
AT393456B (de) * 1989-11-15 1991-10-25 Schima Heinrich Zentrifugalpumpe zur foerderung von blut
US5938412A (en) * 1995-06-01 1999-08-17 Advanced Bionics, Inc. Blood pump having rotor with internal bore for fluid flow
US5840070A (en) * 1996-02-20 1998-11-24 Kriton Medical, Inc. Sealless rotary blood pump
JP2807786B2 (ja) * 1996-07-26 1998-10-08 工業技術院長 人工心臓用ポンプ
AT404318B (de) * 1996-07-29 1998-10-27 Heinrich Dr Schima Zentrifugalpumpe bestehend aus einem pumpenkopf und einem scheibenläuferantrieb zur förderung von blut und anderen scherempfindlichen flüssigkeiten
JP4016441B2 (ja) * 1996-10-02 2007-12-05 株式会社ジェイ・エム・エス ターボ式血液ポンプ
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Publication number Priority date Publication date Assignee Title
US5055005A (en) * 1990-10-05 1991-10-08 Kletschka Harold D Fluid pump with levitated impeller
US6074180A (en) * 1996-05-03 2000-06-13 Medquest Products, Inc. Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method
US6015272A (en) * 1996-06-26 2000-01-18 University Of Pittsburgh Magnetically suspended miniature fluid pump and method of designing the same
US6609883B2 (en) * 1997-05-09 2003-08-26 Ventrassist Pty Ltd Rotary pump with hydrodynamically suspended impeller
US6227817B1 (en) * 1999-09-03 2001-05-08 Magnetic Moments, Llc Magnetically-suspended centrifugal blood pump
US6439845B1 (en) * 2000-03-23 2002-08-27 Kidney Replacement Services, P.C. Blood pump

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050107657A1 (en) * 2002-03-08 2005-05-19 Michel Carrier Dual inlet mixed-flow blood pump
US20070004959A1 (en) * 2003-05-11 2007-01-04 Michel Carrier Blood pump with frusto-conical bearing structure
US7699588B2 (en) 2003-07-04 2010-04-20 Jostra Ag Centrifugal pump
US20120207630A1 (en) * 2005-09-05 2012-08-16 Tokyo Medical And Dental University Disposable centrifugal blood pump with magnetic coupling
US20100040491A1 (en) * 2005-09-05 2010-02-18 Tokyo Institute Of Technology Disposable centrifugal blood pump with magnetic coupling
US8123503B2 (en) * 2005-09-05 2012-02-28 Tokyo Institute Of Technology Disposable centrifugal blood pump with magnetic coupling
US8596999B2 (en) * 2005-09-05 2013-12-03 Tokyo Institute Of Technology Disposable centrifugal blood pump with magnetic coupling
US12264677B2 (en) 2007-02-27 2025-04-01 Miracor Medical Sa Device to assist the performance of a heart
US12270400B2 (en) 2007-02-27 2025-04-08 Miracor Medical Sa Device to assist the performance of a heart
US12270401B2 (en) 2007-02-27 2025-04-08 Miracor Medical Sa Device to assist the performance of a heart
US12480496B2 (en) 2007-02-27 2025-11-25 Miracor Medical Sa Device to assist the performance of a heart
EP2359007A4 (de) * 2008-12-16 2015-03-04 Cleveland Clinic Foundation Zentrifugalpumpe mit versetzter spirale
US20100323916A1 (en) * 2009-01-15 2010-12-23 Guillermo Garcia-Cardena High-Throughput Biological Screening
US9006149B2 (en) 2009-01-15 2015-04-14 The Charles Stark Draper Laboratory, Inc. High-throughput biological screening
US9227001B2 (en) * 2010-10-07 2016-01-05 Everheart Systems Inc. High efficiency blood pump
AU2016204878B2 (en) * 2010-10-07 2018-03-08 CORVION, Inc. High efficiency blood pump
US20120089225A1 (en) * 2010-10-07 2012-04-12 EverHeart Systems LLC High efficiency blood pump
US10568998B2 (en) * 2010-10-07 2020-02-25 Everheart Systems Inc. High efficiency blood pump
US11471662B2 (en) 2010-10-07 2022-10-18 CORVION, Inc. High efficiency blood pump
US20140200664A1 (en) * 2010-10-07 2014-07-17 Everheart Systems Inc. High efficiency blood pump
US9415147B2 (en) * 2010-10-07 2016-08-16 Everheart Systems Inc. High efficiency blood pump
US20160346450A1 (en) * 2010-10-07 2016-12-01 Everheart Systems Inc. High efficiency blood pump
US9364594B2 (en) * 2011-05-05 2016-06-14 Berlin Heart Gmbh Blood pump
CN103648538A (zh) * 2011-05-05 2014-03-19 柏林心脏有限公司 血泵
US20140171727A1 (en) * 2011-05-05 2014-06-19 Berlin Heart GbmH Blood pump
CN103648538B (zh) * 2011-05-05 2017-02-08 柏林心脏有限公司 血泵
US9987405B2 (en) 2011-05-05 2018-06-05 Berlin Heart Gmbh Blood pump
JP2018196755A (ja) * 2011-12-03 2018-12-13 インディアナ ユニバーシティ リサーチ アンド テクノロジー コーポレイション 大動脈肺動脈インペラ補助装置及び方法
JP2015508294A (ja) * 2011-12-03 2015-03-19 インディアナ ユニバーシティ リサーチ アンド テクノロジー コーポレイション 大動脈肺動脈インペラ補助装置及び方法
EP2785392A4 (de) * 2011-12-03 2015-08-12 Univ Indiana Res & Tech Corp Vorrichtung und verfahren zur unterstützung eines cavopulmonaren viskösen antriebs
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AU2001239003A1 (en) 2001-10-03
WO2001070300A1 (de) 2001-09-27
AT412065B (de) 2004-09-27
EP1265655A1 (de) 2002-12-18
ATA5102000A (de) 2004-02-15

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