Pedicle screw implant system

Details Pedicle screw implant system Pedicle screw implant system

2011-05-31

2011-05-31

Barrett, Thomas C (Department: 3775)

Surgery

Instruments

Orthopedic instrumentation

C606S267000, C606S308000

Reexamination Certificate

active

07951173

ABSTRACT:
A pedicle screw fastening that can be made polyaxial, monoaxial, fixed, or provide a predefined monoaxial placement. The fastening system consists of an anchoring bone screw having threads on one end for use in anchoring to the screw to the spine and a spherical connector on the other end operating as a pivot point about which a U-shaped or side loading connecting assembly is used to secure to a connecting rod for use in stabilization of a spine. The connecting assembly, for receipt of a spinal connecting rod, includes a biased retainer ring for maintaining a positive tension between the connecting assembly and the anchored screw. The system allows for an improved manufacturing step wherein the threaded shank of a bone screws can be passed through a lower portion of the connecting assembly allowing a variety of bone screw sizes to be used with a common sized connector.

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