Artificial valve leaflet
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
An artificial mitral valve has a ring, an anterior cusp-side region, a posterior cusp-side region and a valve leaflet connected along an outer edge of the ring. The valve leaflet includes an anterior cusp forming member connected to the anterior cusp-side region and a posterior cusp forming member connected to the posterior cusp-side region. The anterior cusp forming member is provided with has an upper edge joined to the ring and a lower edge that forms a bifurcated portion. The upper edge is made up of a pair of right and left edges that incline inward and upward from the right and left sides, and a curved edge interposed between the inclined edges that curves along the anterior cusp-side region. The posterior cusp forming member has an upper edge joined to the ring and a lower edge that forms a bifurcated portion.
17 Citations
10 Claims
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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, and wherein the lower edge of the anterior cusp forming member comprises: -
a side edge that extends from the first boundary portion in a downward direction, and a 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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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, wherein the lower edge of the posterior cusp forming member comprises: -
a side edge that extends from the second boundary portion in a downward direction, a center edge that extends in an upward direction from an end of the side edge opposite the second boundary portion, wherein the center edge defines a parabola having an inflection point, and wherein a height as measured from the end of the side edge to the inflection point of the center edge is less than a height as measured from the end of the side edge to the upper edge. - View Dependent Claims (10)
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Specification