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Centrifugal blood pump

  • US 4,984,972 A
  • Filed: 10/24/1989
  • Issued: 01/15/1991
  • Est. Priority Date: 10/24/1989
  • Status: Expired due to Term
First Claim
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1. A disposable pumping unit adapted to pump biological fluid such as blood, the pumping unit comprising:

  • a pump housing having a pumping chamber therein, and having an inlet and an outlet communicating with the pumping chamber;

    a stator having a proximal end and a distal end with the proximal end connected to the pump housing and the distal end extending into the pumping chamber, the stator defining a central axis;

    a bearing supported at the distal end of the stator and aligned with the central axis;

    a rotator positioned within the pumping chamber and supported on the bearing for rotation about the central axis, the rotator having a hub and a plurality of openings configured to expose the bearing to the fluid; and

    magnetic means carried by the rotator within the pumping chamber.

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