Planar zone in prosthetic heart valve leaflet
First Claim
Patent Images
1. A prosthetic valve comprising:
- a leaflet frame; and
a plurality of leaflets coupled to the leaflet frame, each leaflet being flexible and including two leaflet sides, a free edge and a base, each leaflet having a planar zone in a central region, wherein the planar zone is planar, wherein the planar zone defines a shape having an area, wherein the area is larger nearer the base than the free edge, wherein each leaflet includes two side regions on opposite sides of the central region, wherein the central region is defined by a shape of an isosceles triangle defined by two central region sides, the leaflet base and the leaflet free edge, wherein the two central region sides converge from the leaflet base, and wherein each of the side regions have a shape of a triangle and each are defined by one of the central region sides, one of the leaflet sides, and the leaflet free edge, wherein the central region is planar, wherein each of the two side regions and the central region are planar when the prosthetic valve is in a closed position under unpressurized conditions.
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Abstract
Described embodiments are directed toward prosthetic valves having leaflets of a particular shape that improves bending character without requiring a long length valve. In accordance with an embodiment, a prosthetic valve comprises a leaflet frame, a plurality of leaflets coupled to the leaflet frame, where each leaflet has a free edge and a base. Each leaflet has a planar zone in a central portion, wherein the planar zone is substantially planar. The planar zone defines a shape having an area, wherein the area is larger nearer the base than the free edge.
76 Citations
23 Claims
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1. A prosthetic valve comprising:
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a leaflet frame; and a plurality of leaflets coupled to the leaflet frame, each leaflet being flexible and including two leaflet sides, a free edge and a base, each leaflet having a planar zone in a central region, wherein the planar zone is planar, wherein the planar zone defines a shape having an area, wherein the area is larger nearer the base than the free edge, wherein each leaflet includes two side regions on opposite sides of the central region, wherein the central region is defined by a shape of an isosceles triangle defined by two central region sides, the leaflet base and the leaflet free edge, wherein the two central region sides converge from the leaflet base, and wherein each of the side regions have a shape of a triangle and each are defined by one of the central region sides, one of the leaflet sides, and the leaflet free edge, wherein the central region is planar, wherein each of the two side regions and the central region are planar when the prosthetic valve is in a closed position under unpressurized conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification