Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 2, 2019
Patent Application Number
15688595
Date Filed
August 28, 2017
Patent Citations
Patent 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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