Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 5, 2013
Patent Application Number
12589160
Date Filed
October 19, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
A screw for use in spinal surgery provided with a screw shaft and a screw head and at least one extension tab extending proximally from the screw head, the extension tab being defined relative to the screw head by a stress concentration feature. At a proximal end of the extension tab, the extension tab may be narrower in a circumferential direction than the extension tab at a distal portion thereof. A particular shape of stress concentration may be provided.
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