Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Roger P. Jackson0
Date of Patent
August 29, 2017
0Patent Application Number
140224600
Date Filed
September 10, 2013
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A polyaxial bone screw assembly includes a threaded shank body having an upper portion, a receiver member or head, a retaining and articulating structure, and a pressure insert disposed between the shank upper portion and a rod. The receiver has a U-shaped cradle defining a channel for receiving a spinal fixation rod and a receiver cavity. The retaining and articulating structure attaches to the shank and rotates with the shank in the cavity during positioning. The pressure insert presses upon the shank upper portion and not the retaining and articulating structure.
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