Heart valve prosthesis
First Claim
1. A cardiac valve prosthesis comprising a frame and two or more leaflets attached to the frame, wherein at least one of the leaflets comprises a first portion which has a generally spherical surface, and a second portion which has a generally conical surface.
2 Assignments
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Accused Products
Abstract
The invention provides a prosthetic valve having a generally annular frame with three post and three scallops. The frame is tri-symmetric with an axis of symmetry defined by the axis of blood flow through the valve. The external surface of the frame is generally cylindrical with diameter D. Each leaflet has a truncated spherical surface adjacent to its free edge. The spherical surface is joined tangentially to a truncated conical surface. The half angle of the truncated cone is approximately 37.5°. The radius of the sphere is approximately D/2−0.5 (mm). The leaflet surface is axi-symmetrical with the axis of symmetry being perpendicular to the axis of the valve frame and blood flow.
752 Citations
19 Claims
- 1. A cardiac valve prosthesis comprising a frame and two or more leaflets attached to the frame, wherein at least one of the leaflets comprises a first portion which has a generally spherical surface, and a second portion which has a generally conical surface.
Specification