Prosthetic heart valve with leaflet shelving
First Claim
Patent Images
1. A prosthetic valve comprising:
- a leaflet frame defining commissure posts, the leaflet frame having a tubular shape that defines a longitudinal axis, the leaflet frame has a leaflet frame first end and a leaflet frame second end that is opposite the leaflet frame first end, the commissure posts are adjacent the leaflet frame first end; and
a plurality of leaflets coupled to the leaflet frame, each leaflet coupled to two of the commissure posts and including a free edge and a leaflet base, wherein each of the plurality of leaflets is operable to bend about a straight base segment of its leaflet base,wherein each straight base segment has a length of less than a length of a chord defined as a straight line that extends from two of the commissure posts and lies on a plane that is perpendicular to the longitudinal axis of the leaflet frame,wherein each straight base segment is parallel to a respective chord,wherein each leaflet base has a flat portion that defines a shelf structure and each leaflet base is coupled to the leaflet frame at its shelf structure.
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Abstract
Described embodiments are directed toward prosthetic valve leaflets of particular configurations that control bending character. In embodiments provided herein, a valve leaflet is provided with a planar zone that is bounded at a planar zone base by a straight line, wherein the leaflet is operable to bend along a base of the planar zone.
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Citations
31 Claims
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1. A prosthetic valve comprising:
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a leaflet frame defining commissure posts, the leaflet frame having a tubular shape that defines a longitudinal axis, the leaflet frame has a leaflet frame first end and a leaflet frame second end that is opposite the leaflet frame first end, the commissure posts are adjacent the leaflet frame first end; and a plurality of leaflets coupled to the leaflet frame, each leaflet coupled to two of the commissure posts and including a free edge and a leaflet base, wherein each of the plurality of leaflets is operable to bend about a straight base segment of its leaflet base, wherein each straight base segment has a length of less than a length of a chord defined as a straight line that extends from two of the commissure posts and lies on a plane that is perpendicular to the longitudinal axis of the leaflet frame, wherein each straight base segment is parallel to a respective chord, wherein each leaflet base has a flat portion that defines a shelf structure and each leaflet base is coupled to the leaflet frame at its shelf structure. - 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, 24, 25, 26, 27, 28, 29)
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30. A prosthetic valve comprising:
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a leaflet frame defining commissure posts, the leaflet frame having a generally tubular shape defining a longitudinal axis; and a plurality of leaflets coupled to the leaflet frame, each leaflet coupled to two of the commissure posts, each leaflet has a free edge and a leaflet base, each leaflet base having a flat portion that defines a shelf structure and defines a straight base segment of the leaflet base, each shelf structure being bound by the leaflet frame and its corresponding straight base segment and each shelf structure is coplanar with a plane that is perpendicular to the longitudinal axis, each leaflet is operable to bend from its flat portion along its straight base segment towards its free edge, each leaflet has a planar zone including a planar zone base which is coincident with its corresponding straight base segment which is a substantially straight line that has a length that is less than a length of a chord defined as a straight line that extends from two of the commissure posts at a junction of the corresponding leaflet free edge and the two of the commissure posts, wherein each planar zone is substantially planar, wherein each straight base segment is parallel to a respective chord and, each leaflet base is coupled to the leaflet frame at its shelf structure. - View Dependent Claims (31)
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Specification