Connection rod for screw or hook polyaxial system and method...

A - Human Necessities – 61 – B

Patent

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

Patent

CA 2460183

A low-profile surgical implant assembly is provided that includes a connector device (28) that is an integral part of a rod, the connector device allowing the rod to be attached directly to a bone screw, such as a pedicle screw (10). Another aspect of the invention is a clamp device (200) that allows the length of a rod spanning to attachment devices to be adjusted at the time of implantation, and further allows the clamp device to be secured by tightening a securing end of the clamp at the attachment device. The assemblies are useful for insertion into bone and connecting a foreign object to bone via a polyaxial coupling mechanism. A method for implanting the assembly is also provided.

L'invention concerne un assemblage d'implant chirurgical de forme ramassée comprenant un dispositif de connexion (28) intégré en totalité à une tige, ce dispositif permettant d'attacher la tige à une vis pour os, telle qu'une vis pédiculaire (10). Dans une autre réalisation, l'invention concerne un dispositif de pince (200) permettant d'ajuster la longueur d'un serrage de tige à des dispositifs de fixation au moment de l'implantation, et qui permet aussi de sécuriser le dispositif de serrage par resserrement d'une extrémité de fixation de la pince au dispositif de fixation. Ces assemblages sont utiles lorsqu'il s'agit de réaliser une insertion dans un os et de connecter un objet étranger à l'os au moyen d'un mécanisme de couplage polyaxial. L'invention concerne aussi un procédé d'implantation de l'assemblage.

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