Blood pump drive system

• US 5,147,186 A
• Filed: 01/04/1991
• Issued: 09/15/1992
• Est. Priority Date: 08/04/1989
• Status: Expired due to Term

• Current Assignee: Medtronic Bio-Medicus, Inc.
• Original Assignee: Medtronic Bio-Medicus, Inc.
• Inventors: Buckholtz, Dwight A.
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): KORYTNYK, PETER G
• Application Number:
  US07/638,366
• Time in Patent Office: 620 Days
• Field of Search: 417/360, 417/420, 417/423.15, 415/140, 415/900, 464/29, 464/180, 464/181, 192/84 PM, 310/103, 310/104, 604/4, 604/151, 128/DIG. 12
• US Class Current: 417/420
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: A61M 60/216 including a rotating member acting on the blood, e.g. impeller
• CPC Class Codes: A61M 60/31 for enhancement of in vivo organ perfusion, e.g. retroperfusion
• CPC Class Codes: A61M 60/419 the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
• CPC Class Codes: A61M 60/824 Hydrodynamic or fluid film bearings
• CPC Class Codes: F04D 13/027 Details of the magnetic circuit
• CPC Class Codes: F04D 13/06 the pump being electrically driven
• CPC Class Codes: F04D 29/628 especially adapted for liquid pumps
• CPC Class Codes: F05B 2240/62 flexible
• CPC Class Codes: H02K 49/108 with an axial air gap
• CPC Class Codes: H02K 5/128 using air-gap sleeves or air-gap discs
• CPC Class Codes: Y10S 415/90 Rotary blood pump

Abstract

Perfusion pump driver apparatus for coupling motive power from a controller console to the rotator of perfusion pump. The coupler has a console adapter to connect the coupler apparatus to the pump control console. A pump receptacle is provided in the coupler to connect the pump to the driver. A power transfer mechanism consisting of a bushing and flexible shaft is provided in the coupler to adapt the control console characteristics to the pump characteristics.

Claims

1. Apparatus for pumping blood, comprising:

a pump controller console having a motor and having a pump receiver;

said pump receiver including detent means for securing flanges and an annular recess for retaining flanges;

kinetic pump means for imparting kinetic energy to said blood;

said pump means including rotator means for increasing the angular velocity of said blood;

drive magnet means embedded in said rotator means adapted for coupling energy to said rotator;

coupler means for interconnecting said kinetic pump to said console;

said coupler means including a pump receptacle and a console adapter, the console adapter comprising an annular housing 76 having, a peripheral flange 64 to mate with said annular recess on said console pump receiver 14 and having a recessed slot 66 to engage said detent on said console pump receiver;

power transfer means having a bushing 74 for coupling to a flexible shaft 58 located in said annular housing 76 and having coupling means 72 for connection to said motor.