Patent ID: 11944353
Assignee: JGMG BENGOCHEA, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 9:
10. A pivoting screw assembly for surgical implantation, comprising:
a fixation screw, including:
a threaded shank, and a head having a concave curved cradle that is shaped and disposed to receive and support a cylindrical stabilization rod, and a tapered surface that is adjacent to the threaded shank, the tapered surface including a linear taper, a curved taper, or a combination thereof;

a receiver body adapted for engagement with the fixation screw having an aperture having a generally U-shaped conformation, and including
a base that includes a curved exterior surface, an interior surface having a through slot for receiving the shank and a seat with a curved surface for contacting the tapered surface of the fixation screw; and
opposing sidewalls extending from the base, the opposing sidewalls including interior and exterior surfaces, and including on the interior surfaces opposing flats adjacent to the base and a threaded portion proximal to the flats; and

a footing, the footing including a curved support surface shaped and disposed to support the curved exterior surface of the base, the curved support surface of the footing including the essentially common curvature;
wherein the base and the opposing sidewalls are shaped and disposed to receive the spinal stabilization rod in contact with the cradle of the screw head inserted in the through slot,
wherein the curved exterior surface of the base and the curved surface of the seat of the base include an essentially common curvature, and
wherein the footing includes at least one clocking alignment recess, and the fixation screw includes at least one clocking alignment projection arranged and disposed to interlock with the at least one clocking alignment recess when assembled.