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Cardiac assist device

  • US 5,941,813 A
  • Filed: 07/22/1997
  • Issued: 08/24/1999
  • Est. Priority Date: 07/23/1996
  • Status: Expired due to Fees
First Claim
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1. An implantable cardiac assist device, comprising:

  • an outer housing;

    a pump unit within the housing, having an inlet and outlet connectable to a patient'"'"'s cardiovascular system and having a rotor portion therein rotatable to force blood entering the pump unit through the inlet out through the outlet;

    a motor unit within the outer housing and hermetically sealed from the pump unit, the motor unit including control electronics and windings to produce a magnetic field couplable to the rotor portion, the motor unit being couplable to a power supply; and

    shape memory valves disposed in the inlet and outlet, actuatable so as to permanently seal the inlet and outlet.

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