US 11,944,353 B2
Implants and instruments for enhancing vertebral alignment and sagittal balance
Javier Garcia-Bengochea, Jacksonville, FL (US); and Marc von Amsberg, Waxhaw, NC (US)
Assigned to JGMG BENGOCHEA, LLC, Jacksonville, FL (US)
Filed by JGMG BENGOCHEA, LLC, Jacksonville, FL (US)
Filed on Jan. 20, 2021, as Appl. No. 17/153,559.
Application 17/153,559 is a division of application No. 15/818,005, filed on Nov. 20, 2017, granted, now 10,898,240.
Claims priority of provisional application 62/461,706, filed on Feb. 21, 2017.
Claims priority of provisional application 62/424,228, filed on Nov. 18, 2016.
Prior Publication US 2021/0161567 A1, Jun. 3, 2021
Int. Cl. A61B 17/70 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/7032 (2013.01) [A61B 17/7002 (2013.01); A61B 17/7005 (2013.01); A61B 17/7035 (2013.01); A61B 17/7079 (2013.01); A61B 17/708 (2013.01); A61B 17/7086 (2013.01); A61B 17/7089 (2013.01); A61B 17/7091 (2013.01); A61B 2017/0046 (2013.01); A61B 17/7074 (2013.01)] 11 Claims
OG exemplary drawing
 
1. 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, contact, 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, wherein the screw head further includes a plurality of contoured surfaces sloping away from the cradle toward the tapered surface, the plurality of contoured surfaces adapted to support the cylindrical stabilization rod and including contours selected from the group consisting of bevels, chamfers, curves, and combinations 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
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, and
wherein the curved exterior surface of the base and the curved surface of the seat of the base include an essentially common curvature.