Locking bone screw and spinal plate system

Details Locking bone screw and spinal plate system Locking bone screw and spinal plate system

A - Human Necessities

61

B

A61B 17/86 (2006.01) A61B 17/70 (2006.01) A61B 17/80 (2006.01) A61B 17/88 (2006.01)

Patent

CA 2591266

A bone plate system including a bone plate and a bone screw with an integrated locking mechanism is disclosed. The bone screw includes an elongate member having a threaded shank and a bone screw head that is radially deformable. The integrated locking mechanism sits within the bone screw head and can rotate between a locked condition and an unlocked condition. When the bone screw head is seated within an aperture in the bone plate, rotating the integrated locking mechanism into the locked condition helps to prevent bone screw backout.

La présente invention concerne un systèmes de plaque vissée comprenant une plaque vissée et une vis osseuse avec un mécanisme de verrouillage intégré. La vis osseuse comprend un élément effilé possédant un moignon fileté et une tête de vis osseuse radialement déformable. Le mécanisme de verrouillage intégré est assis à l'intérieur de la tête de vis osseuse et peut tourner entre un état verrouillé et un état déverrouillé. Lorsque la tête de vis osseuse est assise à l'intérieur d'une ouverture dans la plaque, la rotation du mécanisme de verrouillage intégré à l'état verrouillé aide à d'empêcher le retrait de la vis osseuse.

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