Dynamic fixation device and method of use

Details Dynamic fixation device and method of use Dynamic fixation device and method of use

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61B 1/00 (2006.01)

Patent

CA 2484923

A dynamic fixation device is provided that allows the vertebrae to which it is attached to move in flexion within the normal physiological limits of motion, while also providing structural support that limits the amount of translation motion beyond normal physiological limits. The present invention includes a flexible portion and two ends that are adapted for connection to pedicle screws. In at least one embodiment of the present invention, the normal axis of rotation of the vertebrae is substantially duplicated by the dynamic fixation device. The flexible portion of the dynamic fixation device can include a geometric shape and/or a hinge portion.

La présente invention concerne un dispositif de fixation dynamique qui permet un mouvement de flexion des vertèbres sur lesquelles il est attaché, à l'intérieur des limites physiologiques normales du déplacement, ce dispositif assurant simultanément un support structural qui limite le déplacement en translation au-delà des limites physiologiques normales. Le dispositif de la présente invention comprend une partie souple et deux extrémités qui sont conçues pour être raccordées à des vis pédiculaires. Dans au moins un mode de réalisation de la présente invention, l'axe normal de rotation des vertèbres est dupliqué sensiblement par le dispositif de fixation dynamique. La partie souple de ce dispositif de fixation dynamique peut comporter une forme géométrique et/ou une partie charnière.

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