Patent ID: 9326796
Filing Date: 2016-05-03
CPC Classification: A61B

Claim Text:
1. A bone fixation subassembly configured to receive a fixation rod and a locking cap, the bone fixation subassembly comprising: an anchor seat including an anchor seat body extending along a central axis and defining an upper end and a lower end, wherein the upper end comprises a pair of opposing fixation rod-receiving gaps therebetween that are spaced along a longitudinal axis, and a bore disposed between the rod-receiving gaps; a collet including a collet body configured to be disposed in the anchor seat, the collet body defining an upper end and an expandable lower end, the expandable lower end comprising a plurality of fingers separated by slots; and a bone anchor that extends along an axis of rotation and is configured to attach to the collet such that the bone anchor is permitted to rotate about the axis of rotation relative to the collet, the bone anchor is further permitted to pivot relative to the collet along a desired plane, and the bone anchor is prevented from pivoting in another plane that includes the central axis and is angularly offset with respect to the desired plane.