Instruments and methods for reduction of vertebral bodies

Details Instruments and methods for reduction of vertebral bodies Instruments and methods for reduction of vertebral bodies

A - Human Necessities

61

B

A61B 17/88 (2006.01)

Patent

CA 2586554

A spinal stabilization system may be formed in a patient. In some embodiments, a minimally invasive procedure may be used to form a spinal stabilization system in a patient. Bone fastener assemblies may be coupled to vertebrae. Each bone fastener assembly may include a bone fastener and a collar. The collar may be rotated and/or angulated relative to the bone fastener. Extenders may be coupled to the collar to allow for formation of the spinal stabilization system through a small skin incision. The extenders may allow for alignment of the collars to facilitate insertion of an elongated member in the collars. An elongated member may be positioned in the collars and a closure member may be used to secure the elongated member to the collars. A reducer may be used to achieve reduction of one or more vertebral bodies coupled to a spinal stabilization system.

L'invention porte sur un système de stabilisation à former dans un patient. Dans certains modes de réalisation, une procédure invasive minimale permet de former un système de stabilisation vertébrale dans un patient. Des ensembles de fixation osseuse peuvent être reliés aux vertèbres. Chaque ensemble de fixation osseuse comprend une fixation osseuse et une collerette. Cette collerette peut pivoter et/ou s'incliner par rapport à la fixation osseuse. Des éléments d'extension peuvent être reliés à la collerette afin de permettre la formation du système de stabilisation vertébrale au moyen d'une petite incision pratiquée dans la peau. Ces éléments d'extension permettent d'aligner les collerettes afin de faciliter l'insertion d'un élément allongé dans les collerettes. Un élément allongé peut être positionné dans les collerettes et un élément de fermeture peut servir à fixer l'élément allongé aux collerettes. Un réducteur sert à réduire un ou plusieurs corps vertébraux reliés au système de stabilisation vertébrale.

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