Vertical coaptation zone in a planar portion of prosthetic heart valve leaflet
First Claim
1. A prosthetic heart valve comprisinga plurality of leaflets, each leaflet including a leaflet free edge and a leaflet base opposite from the leaflet free edge, each leaflet having a planar zone in a central region, wherein each planar zone is planar when in an unpressurized state, wherein each planar zone defines a shape having an area, wherein each area is larger nearer the leaflet base than the leaflet free edge, wherein each planar zone extends to each leaflet free edge defining a truncated top having a top width, as measured along each leaflet free edge, greater than zero, each leaflet having a vertical coaptation zone defining a coaptation height as a length of the coaptation zone measured in an axial direction, wherein each coaptation zone extends along each leaflet free edge, and wherein each coaptation height is greater than zero.
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Abstract
Described embodiments are directed toward prosthetic valve leaflets of a particular shape that allows redundant coaptation height in the leaflets when a planar segment is present in each leaflet.
269 Citations
16 Claims
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1. A prosthetic heart valve comprising
a plurality of leaflets, each leaflet including a leaflet free edge and a leaflet base opposite from the leaflet free edge, each leaflet having a planar zone in a central region, wherein each planar zone is planar when in an unpressurized state, wherein each planar zone defines a shape having an area, wherein each area is larger nearer the leaflet base than the leaflet free edge, wherein each planar zone extends to each leaflet free edge defining a truncated top having a top width, as measured along each leaflet free edge, greater than zero, each leaflet having a vertical coaptation zone defining a coaptation height as a length of the coaptation zone measured in an axial direction, wherein each coaptation zone extends along each leaflet free edge, and wherein each coaptation height is greater than zero.
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9. A prosthetic valve comprising
a plurality of leaflets, wherein each leaflet of the plurality of leaflets comprises: -
a leaflet free edge; a leaflet base opposite from the leaflet free edge; and a central region of each leaflet, wherein each central region defines a planar zone, wherein each planar zone defines a shape having an area, wherein the area is larger nearer each leaflet base than the leaflet free edge, and wherein each planar zone extends to each leaflet free edge defining a truncated top having a top width as measured along each leaflet free edge greater than zero, and wherein each leaflet includes a vertical coaptation zone defining a coaptation height as a length of the coaptation zone measured in an axial direction, wherein the coaptation zone extends along each leaflet free edge, and wherein the coaptation height is greater than zero. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification