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Axial flow blood pump with radially offset rotor

  • US 10,441,693 B2
  • Filed: 03/31/2017
  • Issued: 10/15/2019
  • Est. Priority Date: 04/01/2016
  • Status: Active Grant
First Claim
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1. A blood pump, comprising:

  • a housing defining a proximal end, a distal end, and a first axis extending from the proximal end to the distal end;

    a ferromagnetic rotor disposed within the housing and configured pump blood in a direction along the first axis; and

    a single stator disposed within housing and around the ferromagnetic rotor, the stator being configured to apply a magnetic force causing rotation of the ferromagnetic rotor;

    a non-ferromagnetic tubular body disposed between the rotor and the stator and co-axial with the first axis, the rotor being entirely disposed within the non-ferromagnetic tubular body the stator being affixed within the housing at a predetermined non-uniform radial distance from an exterior surface of the tubular body to an inner diameter of the stator;

    and during operation of the blood pump, the rotor is maintained at a predetermined non-uniform radial distance from the tubular body and the stator is eccentric to the rotor.

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