Graft anchor

Details Graft anchor Graft anchor

A - Human Necessities

61

B

A61B 17/58 (2006.01) A61F 2/08 (2006.01)

Patent

CA 2242582

A graft anchor (10) includes an anchor member (12) for placement in bone tissue (4). The anchor member (12) defines an opening (22). An inner member (16) is inserted securable into the anchor member (12) opening (22). A fastener (14) is configured such that insertion and securing of the inner member (16) into the anchor member (12) opening (22) results in a holding force being applied to the graft (2). The anchor member (12) is of limited length to maintain its distal end (30) within the bone (4). The anchor member (12) includes a distal drive opening (83) for receiving a drive tool (80) and the inner member (16) includes a proximal drive opening (34) for receiving the drive tool (80). The fastener (14) includes channels (150, 152) for containing the graft (2), a fastener body (56) with protrusions (40) extending from the fastener body (56) for penetrating bone tissue (4), and a reinforcing member (54) contained within the fastener body (56).

L'invention concerne un dispositif d'ancrage (10) de greffe comprenant un élément d'ancrage (12) destiné à être placé dans un tissu osseux (4). Cet élément (12) définit une ouverture (22). Un élément interne (16) est inséré de manière fixe dans l'ouverture (22) de l'élément d'ancrage (12). Un élément de fixation (14) est conçu de façon à ce que l'insertion et la fixation de l'élément interne (16) dans l'ouverture (22) de l'élément d'ancrage (12) créent une force de retenue appliquée sur la greffe (2). L'élément d'ancrage (12) a une longueur limitée, ce qui permet que son extrémité distale (30) soit maintenue à l'intérieur de l'os (4). Il comprend une ouverture de mise en place distale (83) servant à recevoir un outil de mise en place (80) et l'élément interne (16) comprend une ouverture de mise en place proximale (34) servant à recevoir l'outil de mise en place (80). L'élément de fixation (14) comporte des canaux (150, 152) devant contenir la greffe (2), un corps (56) pourvu de parties saillantes (40) s'étendant à partir du corps (56) de l'élément de fixation pour pénétrer le tissu osseux (4), et un élément de renforcement (54) contenu dans le corps (56) de l'élément de fixation.

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