Anterior cervical plating system and method

Details Anterior cervical plating system and method Anterior cervical plating system and method

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61B 17/86 (2006.01) A61B 17/88 (2006.01)

Patent

CA 2386606

The present invention is directed to a system (30) for anterior fixation of the spine that utilizes an elongated fixation plate (31). The plating system (30) stabilizes the spine and promotes fusion and incorporation of a graft or implant in a portion of the spinal column. In one aspect of the invention, the fixation plate (31) has a first end with a pair of holes (34). Bone screws (50) extend through the holes (34) to rigidly secure the plate (31) to a first vertebra. The second end of the plate (31) is provided with a pair of slots (35) through which bone screws (50) extend for engagement with a second vertebra. The screws (50) extending through the slots (35) are translatable in the slot (35) to maintain compression of the spinal column portion. The plating system (30) includes a retainer assembly (33) that prevents screw back out. Methods and instruments relating to the plating system (30) are also described.

L'invention concerne un système (30) de fixation antérieure de la colonne vertébrale, mettant en application une plaque de fixation allongée (31). Ce système (30) stabilise la colonne vertébrale et favorise la fusion et l'incorporation d'une greffe ou d'un implant dans une partie de la colonne vertébrale. Dans un aspect de l'invention, cette plaque de fixation (31) possède une première extrémité comportant une paire de trous (34). Des vis osseuses (50) traversent les trous (34), de manière à fixer rigidement la plaque (31) à une première vertèbre. La deuxième extrémité de cette plaque (31) est pourvue d'une paire de fentes (35) à travers lesquelles passent des vis osseuses (50) afin de s'accoupler à une deuxième vertèbre. Ces vis (50) s'étendant à travers les fentes (35) peuvent effectuer une translation dans la fente (35) afin de maintenir la compression de la partie de colonne vertébrale. Ce système (30) comprend un ensemble de retenue (33) empêchant l'expulsion des vis. L'invention concerne également des procédés et des instruments relatifs à ce système de plaque (30).

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