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Prosthetic valve

  • US 4,204,283 A
  • Filed: 05/03/1978
  • Issued: 05/27/1980
  • Est. Priority Date: 05/05/1977
  • Status: Expired due to Term
First Claim
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1. A prosthetic valve comprising:

  • an annular member defining a valve seat around an aperture; and

    an obturating flap having a major area thereof in the form of a rigid sheet with a substantially straight edge portion, and having a minor area thereof in the form of a flexible sheet extending from along the whole length of said edge portion and connecting the flap to said member to serve as a hinge;

    said flap being movable about said hinge between positions in which the flap is respectively engaged and disengaged with said seat to close and open said aperture, and said major area being of similar shape and extent to said seat so that the forces acting on said flap, when closed, are transmitted to said annular member predominantly through said rigid sheet.

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