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Single-stage axial flow blood pump

  • US 4,846,152 A
  • Filed: 11/24/1987
  • Issued: 07/11/1989
  • Est. Priority Date: 11/24/1987
  • Status: Expired due to Term
First Claim
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1. An intravascular blood pump, comprising:

  • (a) a substantially cylindrical stator; and

    (b) a rotor having a hub and cooperating with said stator to pump blood axially through said pump, said stator and rotor defining an annular space therebetween;

    (c) means including two rows of blades on said rotor, for maintaining a radially uniform forward velocity of said blood in said annular space at the trailing edge of said rotor blade means, one of said rows producing a mixed axial and centrifugal flow, and the other producing a substantially pure axial flow.

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