Vertebrae fastener placement guide

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/17 (2006.01) A61B 17/16 (2006.01) A61B 17/88 (2006.01) A61B 17/00 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2426796

A screw placement guide (100, 1000, 3000, 3300) includes a first member (102, 102a, 102b) having a first guide (116, 120a) adapted to contact a first vertebral bone portion (V1) and a second member (104, 104a, 104b) having a second guide (120, 116a) adapted to contact a second vertebral bone portion (V2). A clamping mechanism (106) provided on one of the members clamps the first guide (116, 120a) and the second guide (120, 116a) to the vertebral bone portions (V1, V2). The first guide (116, 120a) and the second guide (120, 116a) are aligned in order to indicate how a fastener will be aligned when fastened between adjacent vertebrae (V1, V2). A driver (108, 108a) engages clamping mechanism (106) to clamp the two members together.

L'invention concerne un guide (100, 1000, 3000, 3300) de positionnement à vis comprenant un premier élément (102, 102a, 102b) pourvu d'un premier guide (116, 120a) adapté pour venir en contact avec une première partie osseuse vertébrale (VI), et un second élément (104, 104a, 104b) pourvu d'un second guide (120, 116a) adapté pour venir en contact avec une seconde partie osseuse vertébrale (V2). Un mécanisme (106) de blocage situé sur un des éléments fixe le premier guide (116, 120a) et le second guide (120, 116a) aux parties osseuses vertébrales (V1, V2). Le premier guide (116, 120a) et le second guide (120, 116a) sont alignés afin d'indiquer comment l'appareil de fixation sera aligné lorsqu'installé entre des vertèbres adjacentes (V1, V2). Un élément (108, 108a) d'entraînement vient s'insérer dans le mécanisme (106) de blocage afin de bloquer les deux éléments ensemble.

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