A modular spinal plate

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/70 (2006.01)

Patent

CA 2287483

A modular spinal plate assembly for use with modular polyaxial pedicle screw implant devices (102) includes a track portion having a pair of parallel rails (152a, 152b) and a multiplicity of compressible coupling elements (122), each having a through hole through which a post portion (112) of a modular polyaxial screw (102) may be mounted. The coupling elements (122) include slots, oppositely oriented, on either side of the element, which slots may be compressed to effectuate the deflection and compaction of the coupling element when a compressive load is applied. This load is applied by a top locking nut (220). The load causes the coupling element (122) to be compression locked to the rails (152a, 152b).

La présente invention concerne un ensemble à plaque spinale modulaire utilisable avec des dispositifs (102) d'implantation à vis pédiculaire polyaxiale modulaire, comprenant un chemin de guidage doté d'une paire de rails (152a, 152b) parallèles et une multiplicité d'éléments d'accouplement (122) compressibles dotés chacun d'un trou traversant par lequel on peut monter une partie broche (112) d'une vis polyaxiale modulaire (102). Les éléments d'accouplement (122) comprennent des fentes, disposées face à face, de part et d'autre de l'élément, lesquelles fentes peuvent être comprimées de façon à provoquer le fléchissement et le tassement de l'élément d'accouplement lorsqu'on applique une charge de compression. Ladite charge est appliquée par un écrou de blocage supérieur (220), la charge amenant l'élément d'accouplement (122) à être bloqué par compression contre les rails (152a, 152b).

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