Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Roger P Jackson0
James L Surber0
Date of Patent
May 29, 2018
0Patent Application Number
133744390
Date Filed
December 29, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A friction fit compression insert (some with lock and release feature), a planar split retaining ring and a shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled and the receiver and insert may include aligned tool receiving apertures for lock and release of the polyaxial mechanism.
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