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Extra cardiac ventricular assist device

  • US 5,713,954 A
  • Filed: 06/13/1995
  • Issued: 02/03/1998
  • Est. Priority Date: 06/13/1995
  • Status: Expired due to Term
First Claim
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1. An artificial myocardium for use in a patient as ventricular assist device aiding the operation of a natural heart comprising,an inflatable cuff shaped to conform generally to the shape of a natural heart, implantable within a patient'"'"'s body, and having open ends, said cuff being formed of an interconnected series of closed tubes formed of a flexible, nondistensable, fluidically sealed material, said tubes being oriented with their long axes parallel to an axis connecting one open end with the other,means implantable within said patient for controllably and periodically filling said tubes with a fluid, such that when filled, each of said tubes assumes a tubular cylindrical shape with a circular cross section, and when emptied of said fluid, each of said tubes assumes a collapsed shape, andcontrol means for providing said periodic sequence of filling and emptying said tubes with said fluid, said control means being adapted to operate in conjunction with the diastolic and systolic pulsing of said natural heart such that said fluid fills said tubes in conjunction with the systolic phase of said natural heart and empties said tubes in conjunction with the diastolic phase of said natural heart.

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