Patent ID: 9662225
Date: 2017-05-30
CPC Classifications: A61B,A61F

Claim:
1. A spinal fixation assembly comprising: an elongated member having a leading end, a trailing end, and a central vertical through hole that extends therethrough, the elongated member further including an upper surface configured to grip an upper vertebral endplate of an upper vertebra, and a lower surface opposite the upper surface along a vertical direction, the lower surface configured to grip a lower vertebral endplate of a lower vertebra; a plate including a concave inner plate surface, an outer plate surface opposite the inner plate surface, and a through hole that extends from the outer plate surface to the inner plate surface; a component interposed between the inner plate surface and the trailing end of the elongated member, the component being separate from both the plate and the elongated member, the component including i) an inner component surface that faces the trailing end of the elongated member and ii) a convex outer component surface that faces the inner plate surface; wherein the convex outer component surface and the concave inner plate surface are complementary to each other so that the plate is movable about the component; a threaded post that extends through the through hole of the plate; and a bone screw having a threaded shaft configured to be driven into one of the upper and lower vertebra.