Patent ID: 8337536
Filing Date: 2012-12-25
Classification: A61B

Abstract:
1. A medical device comprising: a bone screw having a longitudinal axis and a distal end adapted to engage a bone; a head at a proximal end of said bone screw the head including a pocket; a tubular cap having a bore extending completely therethrough along a bore axis, wherein the tubular cap includes a fastener for securing the tubular cap to the head and wherein the tubular cap is fastened to the head such that the bore axis is aligned with the longitudinal axis of the bone screw; a deflectable post having a proximal end extending from the bore of said tubular cap coaxial to the longitudinal axis of the bone screw when the tubular cap is fastened to the head, and a distal end terminating in a retainer received in the pocket of the head, and a post axis extending between the proximal end and the distal end and said tubular cap for securing the retainer in the pocket of the head; and a compliant ring positioned within the bore in contact with the deflectable post and the tubular cap whereby the deflectable post can pivot relative to the bone screw and the post axis is compliantly held in alignment with the longitudinal axis of the bone screw by the compliant ring.