Bone fixation system with low profile fastener

Details Bone fixation system with low profile fastener Bone fixation system with low profile fastener

A - Human Necessities

61

B

A61B 17/56 (2006.01) A61B 17/58 (2006.01) A61F 2/30 (2006.01)

Patent

CA 2544021

A low profile orthopedic device is used to fix and stabilize bones to correct anomalies in skeletal structure occurring naturally or by trauma. Bone screws are screwed into bones by application of torque. Clamp are movably attached to the screws. Each clamp includes a compression ring. A connecting rod connects several screws through slots in the clamps. The clamps are tightened to hold the rod and the heads in a pre-selected position by linear movement of the compression rings.

L'invention concerne un dispositif orthopédique à faible encombrement utilisé pour fixer et stabiliser des os afin de corriger des anomalies dans l'ossature d'origine naturelle ou provoquées par un traumatisme. Des vis à os sont vissées dans des os par application d'un couple. Des éléments de serrage sont fixés amovibles aux vis. Chaque élément de serrage comprend une bague de compression. Une tige de connexion connecte plusieurs vis au moyen d'encoches situées dans les éléments de serrage. Ces éléments de serrage sont serrés de manière à tenir la tige et les têtes dans une position présélectionnée par mouvement linéaire des bagues de compression.

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