Plate-implant, in particular for use on a spinal column

Details Plate-implant, in particular for use on a spinal column Plate-implant, in particular for use on a spinal column

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61B 17/80 (2006.01)

Patent

CA 2667605

The invention relates to a plate-implant for use in osteosynthesis, comprising at least one first plate component with throughbores for receiving fastening screws and a connection means, at least one second plate component with throughbores for receiving fastening screws and a receiving means for receiving a connection means. According to the invention, each plate component is slidable in one direction relative to the other plate component, the plate components being provided with a device limiting their slide path relative to each other. The device comprises a clamping screw (18) having a thread and a screw head and, in the mounted state of the two plate components (2, 3), the thread cooperates with the connection means (5) and the screw head with a longitudinal borehole (14) provided in the second plate component (3) in such a way that a clamping effect is obtained between the screw head and the longitudinal borehole (14) and between the connection means (5) and the receiving means (6).

L'invention concerne un implant sous forme de plaque s'utilisant dans le cas d'ostéosynthèses, qui comprend au moins un premier constituant de plaque, présentant des alésages pour loger des vis de fixation et un moyen d'assemblage, au moins un deuxième constituant, présentant des alésages pour loger des vis de fixation et un moyen de réception pour loger le moyen d'assemblage. Chaque constituant de plaque peut glisser dans un sens, par rapport à l'autre constituant de plaque et lesdits constituants de plaque sont munis d'un dispositif qui limite leur trajectoire de glissement mutuelle. Ledit dispositif comprend une vis de serrage (18) qui se compose d'un filet de vis et d'une tête de vis (18). A l'état monté des deux constituants de plaque (2, 3), le filet de vis coopère conjointement avec le moyen d'assemblage (5) et la tête de vis, avec un alésage longitudinal, prévu dans le second constituant de plaque (3), de sorte à produire un effet de serrage entre la tête de vis et l'alésage longitudinal (14) et entre le moyen d'assemblage (5) et le moyen de réception (6).

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