A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/70 (2006.01)
Patent
CA 2165453
This invention is a spinal fixation system. The spinal fixation system has a set of screw clamp assemblies (10) adapted for attachment of a rod (12). The spinal fixation system comprises anchor screws (50), and clamps (70, 90). The anchor screws (50) include a shoulder (54) width "y" that varies within the anchor screws (50) in the set to seat a clamp (70, 90) at a desired distance above the plane of the spine into which the anchor screws (50) are implanted. The clamps (70, 90) include an arm length "x" that varies within the clamps in the set to attach the rod (12) at a desired distance from the clamp seat site and apertures for receiving the rod within the clamps, wherein the apertures are set at an angle "a" from a plane perpendicular to the long axis of the anchor screw when a clamp (70, 90) is seated on the anchor screw (50) that varies within the clamps in the set.
L'invention concerne un système de fixation pour la colonne vertébrale consistant en un jeu d'ensembles brides de serrage à vis (10) adaptés pour maintenir une tige (12). Ce système comprend des vis d'ancrange (50) et des brides de serrage (70, 90). Ces vis (50) ont une largeur d'épaulement "y" (54) variable afin de placer la mâchoire (70, 90) à la distance désirée par rapport à la surface de la vertèbre dans laquelle elles sont ancrées. Les brides (70, 90) ont une longueur "x" variable afin de tenir la tige (12) à la distance souhaitée par rapport à leur point de fixation. Elles comportent, en outre, des échancrures destinées à recevoir la tige et ménagées de manière à former un angle "a" par rapport à un plan perpendiculaire à l'axe longitudinal de la vis d'ancrage lorsqu'elles sont fixées à celle-ci. Cet angle varie selon les brides faisant partie dudit jeu.
Advanced Spine Fixation Systems Inc.
Asfs Acquisition Corp.
Fetherstonhaugh & Co.
LandOfFree
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