System and method for stabilizing the human spine with a bone plate

Patent 6454769 Issued on September 24, 2002. Estimated Expiration Date:

June 2, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Spinal Concepts, Inc.

Application

No. 089027 filed on 06/02/1998

US Classes:

606/69, Cortical plate606/61, Spinal positioner or stabilizer606/73Threaded fastener element

Examiners

Primary: Reip, David O.

Attorney, Agent or Firm

Foreign Patent References

43 23 956 DE. 10/21/1994
0 260044 EP. 03/21/1988
0578320 EP. 01/21/1994
2 717 068 FR. 09/21/1995
2732887 FR. 10/21/1996
2736535 FR. 01/21/1997
1424826 SU. 09/21/1988
97/00054 WO. 01/21/1997
97/06753 WO. 02/21/1997

International Class

A61B 017/70

Abstract

A spinal plate system and method for fixation of the human spine is provided. In an embodiment, the system includes a bone plate, a bone screw and a ring. The bone screw preferably connects the bone plate to a bone, and the ring preferably fixes the bone screw into a borehole of the bone plate such that the bone screw extends from the bone plate at a selected angle. The ring is preferably capable of swiveling within the borehole to allow the bone screw to be angulated at a plurality of angles oblique to the plate. The bone screw may have a head having a tapered, threaded surface for engaging the ring. The ring preferably has threading on its inner surface for mating with the threading on the head. The inner surface of the ring may be tapered. Movement of the head through the ring preferably expands the ring against the bone plate to fix the bone screw at a selected angle relative to the bone plate.

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