Spinal stabilization system insertion and methods

Details Spinal stabilization system insertion and methods Spinal stabilization system insertion and methods

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61B 17/16 (2006.01) A61B 17/17 (2006.01) A61B 17/88 (2006.01) A61B 17/02 (2006.01) A61B 17/86 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2502571

A spinal stabilization system (100) may be formed in a patient. In some embodiments, a minimally invasive procedure may be used to form a spinal stabilization system (100) in a patient. Bone fastener assemblies (102) may be coupled to vertebrae. Each bone fastener assembly (102) may include a bone fastener (108) and a collar (112). The collar (112) may be rotated and/or angulated relative to the bone fastener (108). Detachable members may be coupled to the collar (112) to allow for formation of the spinal stabilization system (100) through a small skin incision. The detachable members may allow for alignment of the collars (112) to facilitate insertion of an elongated member (104) in the collars (112). An elongated member (104) may be positioned in the collars (112) and a closure member (106) may be used to secure the elongated member (106) to the collars (112).

La présente invention concerne un système de stabilisation rachidien (100) qu'il est possible de mettre en place chez un patient. Pour certains modes de réalisation, une procédure faiblement invasive permet de mettre en place chez le patient un tel système de stabilisation rachidien (100). Des ensembles vis à os (102) peuvent être fixés sur les vertèbres. Chaque ensemble vis à os (102) est généralement constitué d'une vis à os (108) et d'une tête-collier (112) capable de rotation et d'inclinaison par rapport à la vis à os (108). Des pièces amovibles peuvent être adaptées à la tête-collier (112) via une petite incision dans la peau pour former un système de stabilisation rachidien (100). Ces pièces amovibles permettent d'aligner les têtes-colliers (112) pour faciliter le passage d'une tige (104) dans les têtes-colliers (112). Une fois que la tige (104) est passée dans la tête-collier (112), un opercule (106) monté sur la tête-collier (112) permet d'y freiner la tige (104).

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