Implant for an osteosynthesis device, in particular for spinal column correction

Patent 5261912 Issued on November 16, 1993. Estimated Expiration Date:

November 13, 2011. 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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Inventor

Frigg, Robert

Application

No. 772378 filed on 11/13/1991

US Classes:

606/61, Spinal positioner or stabilizer606/72Orthopedic fastener

Examiners

Primary: Brown, Michael A.

Attorney, Agent or Firm

Davis Hoxie Faithfull & Hapgood

International Class

A61B 017/56

Foreign Application Priority Data

1990-08-21 CH

Abstract

This implant for an osteosynthesis device, in particular for spinal column correction, contains a lower part (2) to be anchored to the bone and an upper part (3) to be adjustably fixed to a longitudinal bar (4). The upper part (3) contains a channel (6) running from front to back and open on the top, which positions the two side arms (7), threaded on the inside (10), to hold the longitudinal bar (4). In addition, there is a clamp (5) for the longitudinal bar (4), which is comprised of a cap (11) with a coaxial, outer rim (15) to surround the arms (7) and a coaxial inner cylinder (12) introduced between the arms (7); the outer surface of the inner cylinder (12) contains threads (13) which correspond to the inner threads (10) of the upper part (3).