US 12,324,609 B2
Adjustable spinal plate
Youngbo Ahn, Englewood, CO (US); Sungak Choi, Englewood, CO (US); Sangsoo Lee, Englewood, CO (US); Geungrok Kim, Englewood, CO (US); and Jongwon Hong, Englewood, CO (US)
Assigned to AEGIS SPINE, INC., Englewood, CO (US)
Filed by AEGIS SPINE, INC., Englewood, CO (US)
Filed on Oct. 11, 2022, as Appl. No. 17/963,327.
Prior Publication US 2024/0115297 A1, Apr. 11, 2024
Int. Cl. A61B 17/80 (2006.01); A61B 17/70 (2006.01)
CPC A61B 17/7059 (2013.01) [A61B 17/8042 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An adjustable spinal plate comprising:
a central body; and
a pair of end bodies which are disposed on both sides of a longitudinal direction of the central body and have one or more fixing screw holes in which fixing screws to be inserted into vertebrae are received,
wherein at least one of the pair of end bodies includes a rotation device configured to fix the end bodies to the central body rotatably, and a rotation locking device configured to maintain the rotation device in an unlocked state or a locked state,
the rotation locking device is connected to the rotation device in the unlocked state, and
the rotation locking device is integrally coupled to the rotation device by an external force, so that the movement of the rotation device is restricted, whereby the rotation device is in locked state,
wherein the rotation device includes central joints disposed on both sides in the longitudinal direction of the central body, a wing joint disposed to correspond to the central joint on one side of a wing body, and a rotation pin passing through the central joint and the wing joint, and the rotation locking device is disposed at both ends of the rotation pin,
wherein the rotation locking device is a locking wedge installed in locking wedge insertion portions formed at both ends of the rotation pin, and
wherein the locking wedge includes a wedge body, a first wedge fixing part disposed on one side of the wedge body and having a cross section wider than the wedge body, a second wedge fixing part disposed on the other side of the wedge body and having a cross section wider than the first wedge fixing part, and a wedge inclined surface disposed between the second wedge fixing part and the wedge body,
the locking wedge insertion portion of the rotation pin includes pin expanding parts formed at both ends of a pin body of the rotation pin and divided into a plurality of pieces by pin slits, a first locking wedge seat formed inside the pin expanding parts in which the first wedge fixing part is seated, a stopper formed continuously to the first locking wedge seat so that the locking wedge is not separated, and a second locking wedge seat formed continuously to the stopper and in close contact with the second wedge fixing part, and
the unlocked state is a state in which the first wedge fixing part is inserted into the first locking wedge seat, and the locked state is a state in which the second wedge fixing part is forcibly inserted into the second locking wedge seat by an external force to expand the pin expanding part outward.