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Artificial valve leaflet

  • US 9,474,602 B2
  • Filed: 10/31/2013
  • Issued: 10/25/2016
  • Est. Priority Date: 07/06/2011
  • Status: Active Grant
First Claim
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1. An artificial valve leaflet for implantation into the heart and functioning as an artificial valve, comprising an anterior cusp forming member and a posterior cusp forming member,wherein the anterior cusp forming member comprises an upper edge which is configured to be sewn to a valve annulus of the heart, and a lower edge which is connected to the upper edge at a first boundary portion and which forms a bifurcated portion which is open downward,wherein the upper edge of the anterior cusp forming member comprises a pair of right and left inclined edges inclined inward and upward from right and left ends, and a curved edge which is interposed between the pair of right and left inclined edges and which has a convex shape,wherein the posterior cusp forming member comprises an upper edge which is configured to be sewn to the valve annulus of the heart and which defines a straight line, and a lower edge which is connected to the upper edge at a second boundary portion and which forms a bifurcated portion which is open downward,wherein a height of the bifurcated portion of the anterior cusp forming member is greater than a height as measured from the first boundary portion to the curved edge, andwherein the lower edge of the anterior cusp forming member comprises:

  • a side edge that extends from the first boundary portion in a downward direction, anda center edge that extends in an inward and upward direction from an end of the side edge opposite the first boundary portion,wherein the center edge defines a parabola having an inflection point, andwherein a height as measured from the end of the side edge to the inflection point of the center edge defines the height of the bifurcated portion.

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