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Mechanical heart valve with compressible stiffening ring

  • US 5,397,348 A
  • Filed: 12/13/1993
  • Issued: 03/14/1995
  • Est. Priority Date: 12/13/1993
  • Status: Expired due to Fees
First Claim
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1. A heart valve prosthesis comprisinga generally annular valve body configured around an axis and having an inner surface defining a central orifice through which blood flows and an outer surface with a circumferential groove therein, said groove having a bottom surface;

  • at least one leaflet proportioned to be pivotally received within said valve body and to move between an open position permitting blood to flow in a downstream direction and a closed position blocking flow of blood in an upstream direction;

    a stiffening ring circumferentially mounted about said annular valve body within said circumferential groove, said stiffening ring having an inner surface facing said bottom surface of said groove, said inner surface being radially spaced away from said bottom surface a distance sufficient to permit resistance to compressive forces and forming a gap there between; and

    a sewing ring mounted on said stiffening ring.

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