Geometric control of bending character in prosthetic heart valve leaflets

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.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Provisional Application Serial No. 61 / 739,721 filed December 19, 2012, which applications are hereby incorporated by reference in their entirety. technical field [0003] The present disclosure relates generally to prosthetic valves and more particularly to synthetically flexible leaflet-type prosthetic valve devices, systems, and methods. Background technique [0004] Bioprosthetic valves have been developed that attempt to mimic the function and performance of native valves. Flexible valve leaflets are fabricated from biological tissue such as bovine pericardium. In some valve designs, biological tissue is sutured to a relatively rigid frame that supports the valve leaflets and provides dimensional stability upon implantation. Although bioprosthetic valves provide excellent hemodynamic and biomechanical performance in the short term, they are prone to calcification and cusp teari...

AI Technical Summary

Problems solved by technology

Depending in part on the leaflet material, repeated loading of the leaflets opening and closing results in material failure due to fatigue, creep, or other mechanisms

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