Fixation member for valve

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/24 (2006.01)

Patent

CA 2663957

A prosthesis (10, 300) is provided for implantation at a native semilunar valve (140, 310) of a native valve complex. The prosthesis (10, 300) includes a distal fixation member (14), configured to be positioned in a downstream artery (160, 314), and shaped so as to define exactly three proximal engagement arms (22) that are configured to be positioned at least partially within respective ones of semilunar sinuses (164), and, in combination, to apply, to tissue that defines the semilunar sinuses (164), a first axial force directed toward a ventricle. The prosthesis (10, 300) further includes a proximal fixation member (12) coupled to the distal fixation member (14), the proximal fixation member (12) configured to be positioned at least partially on a ventricular side of the native semilunar valve (140, 310), and to apply, to the ventricular side of the native valve complex, a second axial force directed toward the downstream artery (160, 314), such that application of the first and second forces couples the prosthesis (10, 300) to the native valve complex.

La présente invention concerne une prothèse (10, 300) devant être implantée au niveau d'une valvule semi-lunaire native (140, 310) d'un complexe de valvules natives. La prothèse (10, 300) comprend un élément de fixation distal (14), configuré pour être positionné dans une artère aval (160, 314) et formé de manière à définir exactement trois bras d'engagement proximaux (22) qui sont configurés pour être positionnés au moins partiellement dans des sinus semi-lunaires respectifs (164) et, en combinaison, pour appliquer, au tissu qui définit lesdits sinus (164), une première force axiale dirigée vers un ventricule. La prothèse (10, 300) comprend en outre un élément de fixation proximal (12) couplé à l'élément de fixation distal (14), l'élément de fixation proximal (12) étant configuré pour être positionné au moins partiellement sur un côté ventriculaire de la valvule semi-lunaire native (140, 310) et pour appliquer, sur le côté ventriculaire dudit complexe, une seconde force axiale vers l'artère aval (160, 314), de telle sorte que l'application des première et seconde forces couple la prothèse (10, 300) au complexe de valvules natives.

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