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Implantable heart assist system and method of applying same

  • US 6,390,969 B1
  • Filed: 04/21/2000
  • Issued: 05/21/2002
  • Est. Priority Date: 10/09/1997
  • Status: Expired due to Term
First Claim
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1. An extracardiac pumping system for supplementing blood circulation in a patient without any component thereof being connected to the patient'"'"'s heart, the extracardiac system comprising:

  • a pump configured to pump blood through the patient at subcardiac flow rates, said pump having an average flow rate that, during normal operation thereof, is substantially below that of the patient'"'"'s heart when healthy;

    an inflow conduit having an inner diameter that is not greater than 25 millimeters fluidly coupled to the pump to direct blood to the pump from a first blood vessel that is not a primary blood vessel, the inflow conduit having a first end configured to couple to the first blood vessel; and

    an outflow conduit having an inner diameter that is not greater than 25 millimeters fluidly coupled to the pump to direct blood from the pump to a second blood vessel that is not a primary blood vessel, the outflow conduit having a first end configured to couple to the second blood vessel, wherein at least the first end of one conduit includes a cannula.

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