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HEART ASSIST DEVICE WITH EXPANDABLE IMPELLER PUMP

  • US 20110071338A1
  • Filed: 11/12/2010
  • Published: 03/24/2011
  • Est. Priority Date: 09/17/2004
  • Status: Active Grant
First Claim
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1. An apparatus for inducing motion of a fluid relative to the apparatus, the apparatus comprising:

  • an elongated cannula having a proximal portion and a distal portion, the proximal portion including a conduit having a fixed diameter, and the distal portion including an expandable cannula having a diameter expandable to a diameter greater than the fixed diameter; and

    an impeller positioned in the elongated cannula and having a deployed configuration and a stored configuration, the impeller includinga hub; and

    a blade supported by the hub, the blade having a proximal end attached to the hub and a distal end, the blade in the deployed configuration of the impeller extending away from the hub, and the blade in the stored configuration of the impeller being compressed so as to move the distal end of the blade towards the hub.

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