Suture rings for rotatable artificial heart valves

Details Suture rings for rotatable artificial heart valves Suture rings for rotatable artificial heart valves

A - Human Necessities

61

F

A61F 2/24 (2006.01)

Patent

CA 2261220

A suture ring for a rotatable artificial heart valve apparatus has a ring member covered by a fabric material. A portion of the fabric material covers a portion of the inner surface of the ring member. At least one protuberance is formed on the inner surface of the ring member so as to mitigate the frictional resistance to rotation which results from compression of the fabric between the suture ring and the heart valve. Thus, desirable rotation of the heart valve relative to the suture ring is assured over a range of thicknesses of the fabric material.

Une bague de suture destinée à un appareil à valvule cardiaque artificielle rotative présente un élément de bague recouvert d'une matière en tissu. Une partie de la matière en tissu recouvre au moins la surface intérieure de l'élément bague. Au moins une protubérance est formée sur la surface intérieure de l'élément de bague de manière à réduire la résistance de frottement à la rotation qui résulte de la compression du tissu entre la bague de suture et la valvule cardiaque. Ainsi, une rotation avantageuse de la valvule cardiaque par rapport à la bague de suture est assurée sur une gamme d'épaisseurs de la matière en tissu.

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