Cervical vertebra stabilisation

A - Human Necessities – 61 – B

Patent

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A61B 17/70 (2006.01)

Patent

CA 2190284

A member for stabilizing cervical vertebrae is provided with a body 1 with a plate-shaped portion having a bore 2 extending perpendicular to the plane plate, and a bone screw 3 having a threaded portion 4 and a head 5, whereby the threaded portion 4 extends through the bore. In order to provide a member usable for stabilizing the cervical spinal column the member has, in a second portion 9 which is laterally offset with respect to the bore in the plate plane, an external screw thread 10 and a slit 11 extending in direction of the thread axis for receiving a fa- stening rod 12 for the support thereof. Moreover, a nut 13 coo- perating with the external screw thread 10 for locking the rod 12 to be inserted is provided.

L'invention concerne un élément de stabilisation des vertèbres cervicales. Ledit élément de stabilisation comprend un corps de base (1) avec une partie en forme de plaque et un orifice (2) s'étendant perpendiculairement au plan de la plaque, ainsi qu'une vis (3) pour os, présentant une partie filetée (4) et une tête (5), la partie filetée pénétrant à travers l'orifice (2). Cet élément peut être utilisé pour stabiliser les vertèbres cervicales car il présente une seconde partie (9) décalée latéralement dans le plan de la plaque par rapport à l'orifice (2), un filet extérieur (10) ainsi qu'une fente (11) s'étendant dans l'axe de filetage et pouvant abriter une tige de fixation (12) à supporter. En outre, un écrou (13) coopérant avec le filet extérieur (10) sert à bloquer la tige (12) à insérer.

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