Polymer heart valve with insert molded fabric sewing cuff

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/24 (2006.01)

Patent

CA 2375572

A flexible leaflet heart valve (10) includes an annular body (12) and an annular base portion (14) connected to an end of the body. A fabric member (24) is molded into the base portion (14) to form an uninterrupted annular fabric band around the periphery (16) of the base portion. The fabric band may include a first portion (30) molded into the base (14) and a second portion (32) extending from the base (14). Alternatively, the fabric band (24) may be entirely encapsulated in the base (14). The valve fabric (24) can be sutured directly to patient tissue, or the valve fabric (24) can be sutured to an adjacent sewing cuff (50, 60) which is sutured to patient tissue.

Selon cette invention, une valvule en forme de feuillet souple (10) comprend un corps annulaire (12) et une partie annulaire de base (14) reliée à une extrémité du corps. Un élément en tissu (24) est moulé dans la partie de base (14) de manière à former une bande annulaire ininterrompue en tissu autour de la périphérie (16) de la partie de base. La bande de tissu comprend une première partie (30) moulée dans la partie de base (14) et une deuxième partie (32) faisant saillie depuis la base (14). En variante, la bande de tissu (24) peut être entièrement encapsulée dans la base (14). La bande de tissu (24) peut être suturée soit directement avec le tissu de patient soit avec un manchon de couture adjacent (50, 60), suturé à son tour avec le tissu du patient.

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