05030220 is referenced by 390 patents and cites 12 patents.

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.

Title
Spine fixation system
Application Number
7/501742
Publication Number
5030220
Application Date
March 29, 1990
Publication Date
July 9, 1991
Inventor
Robert S Howland
Seal Beach
CA, US
Agent
Beehler & Pavitt
Assignee
Advanced Spine Fixation Systems Incorporated
CA, US
IPC
A61F 5/00
A61F 5/04
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