Spine fixation system

Details Spine fixation system Spine fixation system

1990-03-29

1991-07-09

Yu, Mickey

Surgery

Instruments

Orthopedic instrumentation

606 73, 128 69, A61F 504, A61F 500

Patent

active

050302205

ABSTRACT:
An implantable spinal fixation system includes a cancellous bone screw, such as a pedicle screw, carrying an improved saddle assembly, secured in place by a nut and which includes a simple and effective locking mechanism including a plurality of fingers which contacts each of the upper half saddle and the nut to prevent rotation of the latter relative to the remained of the assembly. The implant system also includes rods, firmly gripped by the saddle assembly and sublaminar wires in which the rod/wire interface is protected by a wire protector.

REFERENCES:
patent: 476769 (1892-06-01), Allason
patent: 510683 (1893-12-01), Gibson
patent: 929548 (1909-07-01), Brunker
patent: 2398965 (1946-04-01), Rounds
patent: 3997138 (1976-12-01), Crock
patent: 4422451 (1983-12-01), Kalamchi
patent: 4448191 (1984-05-01), Rodnyansky
patent: 4653481 (1987-03-01), Howland
patent: 4686970 (1987-08-01), Dove
patent: 4790303 (1988-12-01), Steffe
patent: 4854304 (1989-08-01), Zielke
patent: 4913134 (1990-04-01), Lugue

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