Anti-rotation fixation element for spinal prostheses

Details Anti-rotation fixation element for spinal prostheses Anti-rotation fixation element for spinal prostheses

A - Human Necessities

61

F

A61F 2/44 (2006.01) A61B 17/17 (2006.01)

Patent

CA 2562093

Prostheses, systems, and methods are provided for replacement of natural facet joints between adjacent vertebrae with vertebral prostheses. A portion of the vertebral prosthesis includes anti-rotation and/or anti-pullout elements to prevent or reduce prosthesis fastener rotation or pull out as a result of torques applied to the prosthesis. Various tools and methods aid the process of surgically adding the vertebral prosthesis to a patient's vertebra.

Cette invention concerne des prothèses, des systèmes et des procédés permettant de remplacer des facettes articulaires naturelles entre des vertèbres adjacentes par des prothèses vertébrales. Une partie de la prothèse vertébrale comprend des éléments anti-rotation et/ou anti-arrachement qui servent à prévenir ou à réduire la rotation ou l'arrachement d'une attache de prothèse se produisant sous l'effet de couples appliqués à la prothèse. Divers outils et procédés contribuent à l'exécution du processus consistant à ajouter par voie chirurgicale la prothèse vertébrale à une vertèbre d'un patient.

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