Patent ID: 9198691
Filing Date: 2015-12-01
Classification: A61B

Abstract:
1. A multiaxial screw fixation system, comprising: (a) a screw having a threaded portion and a screw head portion positioned at one end thereof; and (b) a retainer having a first end, a second end opposite said first end, and a bore for receiving said threaded portion so that said screw head portion may be seated therein, said retainer further comprising a retainer rod-receiving channel and having a retainer centerline axis; wherein said threaded portion comprises a screw centerline axis, said screw centerline axis being offset from said retainer centerline axis when said screw centerline axis and said retainer centerline axis are parallel; wherein said retainer can pivot about said screw head portion a greater degree in a first direction compared to a second direction so that a maximum amount of pivoting in said first direction is greater than in said second direction.