Spinal implant connection assembly

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/56 (2006.01) A61B 17/70 (2006.01) A61B 17/84 (2006.01)

Patent

CA 2226972

A connection assembly for connecting a spinal implant rod to a spinal implant bolt includes a rod connecting member (14) having an opening for receiving a portion of the rod (80), and a bolt connecting member (18) having an opening for receiving a portion of the bolt. The rod connecting member and bolt connecting member are rotatably engaged to one another. At least one interface washer (60) is positioned over and between the rod connecting member and the bold connecting member. Structure for creating a force between the rod, the rod connecting member, the washer, the bolt, and the bolt connecting member is provided. The interface washer has structure for engaging at least one of the rod and the rod connecting member, and for engaging at least one of the bolt and the bolt connecting member, so as to prevent relative rotation of the rod and the rod connecting member, and the bolt and the bolt connecting member when the force is applied.

Cet ensemble connecteur permet de connecter une tige d'implant sipinal à un boulon d'implant spinal et comprend un connecteur (14) de tige, doté d'une ouverture destinée à recevoir une partie de la tige (80), et un connecteur (18) de boulon doté d'une ouverture destinée à recevoir une partie du boulon, ces deux connecteurs pouvant entrer en prise par rotation. Une rondelle intermédiaire (60) au moins est disposée sur et entre ces deux connecteurs. On décrit une structure permettant d'engendrer une force entre la tige, le connecteur de tige, la rondelle, le boulon et le connecteur de boulon. La rondelle intermédiaire comprend une structure permettant l'entrée en prise avec au moins la tige ou le connecteur de tige, et au moins le boulon ou le connecteur de boulon, pour éviter la rotation relative entre la tige et son connecteur, et entre le boulon et son connecteur, lors de l'application d'une force.

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