Single-lock anterior cervical plating system

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/70 (2006.01) A61B 17/16 (2006.01) A61B 17/17 (2006.01) A61B 17/80 (2006.01) A61B 17/86 (2006.01) A61B 17/88 (2006.01) A61B 17/00 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2279936

This invention is anatomically contoured an- terior cervical plates (2) with bone ingrowth sur- faces, providing for intersegmental compressive pre-loading, and a rigid and locked interface: to all of the bone screws (30), with those engaging the vertebrae deployed in highly convergent pairs. The bone screws (30) have a tapered self-tapping; lead- ing end, an increasing root diameter with a gen- erally constant outer diameter with a thread that is narrow and sharp throughout, and an enlarged head portion capable of an interference fit to the receiving holes (6) in the plate (2). Instrumentation consists of plate holders (130), a compression ap- paratus (100), and a pilot hole forming device (60) that interlocks with the plate.

L'invention concerne des plaques d'ostéosynthèse cervicales antérieures (2) de forme anatomique, qui présentent des surfaces d'interposition osseuse permettant le préchargement compressif intersegmentaire, et une interface rigide verrouillée avec toutes les vis osseuses (30), dont celles qui s'engagent dans les vertèbres sont déployées de façon à former des paires présentant une convergence importante. Les vis osseuses (30) ont une extrémité antérieure autotaraudeuse conique, un diamètre à fond de filet croissant et un diamètre externe généralement constant, avec un filetage étroit et acéré sur toute la longueur, et une partie tête élargie pouvant être ajustée par serrage dans les trous récepteurs (6) de la plaque (2). L'instrument comprend les supports (130) de plaque, un dispositif de compression (100) et un dispositif (60) destiné à former les avant-trous, qui se verrouille avec la plaque.

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