Mounting mechanisms for pedicle screws and related assemblies

Details Mounting mechanisms for pedicle screws and related assemblies Mounting mechanisms for pedicle screws and related assemblies

2004-12-31

2009-11-10

Robert, Eduardo C (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

C606S305000

Reexamination Certificate

active

07615068

ABSTRACT:
A pedicle screw is provided that includes an upwardly extending collet. The collet may include downwardly extending slots that define deflectable segments therebetween. When a spherical element or other structure, e.g., a non-dynamic stabilizing element, is positioned around the collet, introduction of a set screw causes outward deflection of the upstanding segments into engagement with the spherical element. A snap ring may be interposed between the collet and the spherical element to facilitate positioning therebetween. In an alternative embodiment, a non-slotted collet is employed. In such embodiment, the collet and the spherical element may be threadingly engaged and may include a snap ring therebetween. The pedicle screw subassemblies may be incorporated into a spinal stabilization system which may include a dynamic stabilizing member to provide clinically efficacious results.

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