Fusion implant

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/44 (2006.01) A61B 17/70 (2006.01) A61F 2/00 (2006.01) A61F 2/28 (2006.01) A61F 2/30 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2223655

A fusion implant for insertion between opposing vertebrae includes a body having an inner surface defining a hollow inner chamber for containing a graft material therein. The body includes a stress transfer mechanism for transferring stress from the vertebrae surrounding the implant to the graft material contained within the implant. A method is provided for implanting the fusion implant between opposing vertebrae by the steps of inserting an implant into a collapsed disc space between adjacent vertebrae, the implant including a collapsed body, and expanding the body to spread the adjacent vertebrae apart.

Un implant par fusion destiné à être inséré entre des vertèbres opposées comprend un corps ayant une surface intérieure délimitant une chambre intérieure creuse pour contenir le matériau de greffe. Le corps comporte un mécanisme de transfert d'effort pour transférer l'effort des vertèbres entourant l'implant au matériau de greffe contenu dans l'implant. On décrit une méthode pour l'implantation de l'implant par fusion entre les vertèbres opposées au moyen des étapes suivantes : l'insertion de l'implant dans un espace intervertébral affaissé entre les vertèbres adjacentes, l'implant comprenant un corps affaissé, et l'expansion du corps de manière à écarter les vertèbres adjacentes.

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