Expanding ligament graft fixation system

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/08 (2006.01) A61B 17/68 (2006.01) A61B 17/84 (2006.01)

Patent

CA 2466044

A graft fixation system for fixing graft material in a bone tunnel includes an expandable fixation member having a graft receiving eyelet disposed proximate its distal end, opposed bone engaging elements disposed about its periphery, and an expansion plug receiving opening defined in its proximal end. The system also includes an expansion plug having a diameter greater than the diameter of the expansion plug receiving opening so that forceable insertion of the expansion plug into the expansion plug receiving opening causes an expansion of the expandable fixation member driving the opposed bone engaging elements apart so as to fix the bone engaging elements, as well as the graft material, in a bone tunnel.

L'invention concerne un système d'ancrage d'une greffe destiné à fixer un matériau endoprothétique dans un tunnel osseux. Le système d'ancrage comprend un élément d'ancrage expansible présentant un oeillet de réception de la greffe disposé à proximité de son extrémité distale; des éléments opposés de contact avec l'os disposés autour de sa périphérie; et une ouverture de réception d'un manchon expansible ménagée dans son extrémité proximale. Le système comprend également un manchon expansible dont le diamètre est supérieur à celui de l'ouverture de réception du manchon expansible, si bien que l'insertion forcée du manchon expansible dans l'ouverture de réception provoque une dilatation de l'élément d'ancrage expansible qui éloigne les éléments opposés de contact avec l'os l'un de l'autre de manière à fixer les éléments de contact avec l'os, ainsi que le matériau endoprothétique, dans le tunnel osseux.

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