Patent ID: 9320543
Filing Date: 2016-04-26
CPC Classification: A61B

Claim Text:
1. A posterior dynamic spinal stabilization system comprising: a) a rod having a first end and a second end, b) a mobile anchor having i) a shank and ii) a rod-receiving portion mated to the first end of the rod, wherein the rod-receiving portion is adapted to translate along the rod and pivot about the shank, the mobile anchor adapted for translation and pivoting along the rod after implantation, e) a set screw adapted to seat in the rod-receiving portion of the mobile anchor, the set screw comprising a low friction, upper bearing surface for bearing upon the rod and reducing wear generation, and f) lower bearing seated within the rod-receiving portion of the mobile anchor and having a surface adapted for receiving a rod, the surface possessing a low friction face that reduces wear generation, wherein the low friction surface of the lower bearing has an arcuate contact surface adapted for contacting the rod.