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Active magnetic bearing system for blood pump

  • US 6,264,635 B1
  • Filed: 12/03/1998
  • Issued: 07/24/2001
  • Est. Priority Date: 12/03/1998
  • Status: Expired due to Term
First Claim
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1. A rotary blood pump, comprising:

  • a pump housing;

    a rotor mounted for rotation within said housing, said rotor having an impeller;

    a rotor motor, said motor including a plurality of permanent magnets carried by said impeller and a motor stator including electrically conductive coils and pole pieces located within said housing;

    said motor being operable to transmit torque and also to provide an axial magnetic force that acts as an axial bearing.

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