Cervical plate/screw system for immobilizing vertebral bodies

Details Cervical plate/screw system for immobilizing vertebral bodies Cervical plate/screw system for immobilizing vertebral bodies

2007-05-22

2007-05-22

Robert, Eduardo C. (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

C606S064000

Reexamination Certificate

active

10679012

ABSTRACT:
A plate/screw system for immobilizing adjacent vertebral bodies or an interbody device includes a plate having at least one spaced opening with an upper section of a width or diameter of d1and a lower section having or diameter less than w1. The lower section defines a partial or completed helical track for receiving a screw. A bone screw for insertion into the threaded opening has a head section of d1, an adjacent neck section of d2and a thread section of d3where d2<d3<d1whereby the relationship between d1and w1determines whether the screw can or cannot pivot relative to the plate.

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Commercial specimen of an Orion surgical plate with one screw per U.S. Patent No. 5,364,399. The plate is also illustrated in Nicholas M. Cordaro's declaration dated Feb. 5, 2007.
Commercial specimen of a buttress plate made in accordance with the subject application by the Assignee SeaSpine, Inc. The plate is not prior art.

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