Multi-axial connection system

Details Multi-axial connection system Multi-axial connection system

A - Human Necessities

61

B

A61B 17/70 (2006.01)

Patent

CA 2601948

In one embodiment of the present invention a system for connecting a fastener element (e.g., a pedicle screw) relative to a rod for the purposes of vertebral fixation is provided. The system may permit multi-axial movement between the fastener element and the rod. Further, the system may permit the angular relationship between the fastener element and the rod to be held in a desired orientation. For the purposes of describing and claiming the present invention, the term "rod" is intended to refer to any elongated structure. Such an elongated structure may be solid or hollow and may have any desired cross-section (e.g., circular, oval, square, rectangular). Further, for the purposes of describing and claiming the present invention, the term "interference fit" is intended to refer to physical contact between two or more components.

Un mode de réalisation de la présente invention concerne un système pour connecter un élément d'attache (par exemple une vis de pédicule) par rapport à une tige en vue d'une fixation vertébrale. Ce système permet un mouvement multi-axial entre l'élément d'attache et la tige. Ledit système permet également de maintenir la relation angulaire entre l'élément d'attache et la tige selon une orientation souhaitée. Dans la présente invention, le terme "tige" désigne toute structure allongée. Une telle structure allongée peut être solide ou creuse et peut présenter n'importe quelle section transversale souhaitée (par exemple circulaire, ovale, carrée, rectangulaire). Dans la présente invention, le terme "ajustement avec serrage" désigne un contact physique entre au moins deux composants.

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