Patent ID: 11911284
Assignee: SPINAL ELEMENTS, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A curved expandable interbody device for placement between vertebrae comprising:
an upper structure configured to abut a superior vertebra, wherein the upper structure comprises an upper surface, a first side surface, and a second side surface, wherein the first side surface is concave, wherein the second side surface is convex;
a lower structure configured to abut an inferior vertebra, wherein the lower structure comprises a lower surface, a third side surface, and a fourth side surface, wherein the third side surface is concave, wherein the fourth side surface is convex; and
a screw mechanism between the upper structure and the lower structure, the screw mechanism comprising a proximal portion, a distal portion, and a coupler, wherein the coupler comprises a central portion at least partially between the proximal portion and the distal portion, wherein the coupler further comprises a proximal interface comprising a first arm, a second arm, an upper connector forming a curved arc between the first arm and the second arm, and a lower connector forming a curved arc between the first arm and the second arm,
wherein the proximal portion and the distal portion are configured to rotate as a unit to change a distance between the proximal portion and the distal portion from a first length to a second length, and
wherein the first side surface of the upper structure, the third side surface of the lower structure, and the first arm of the coupler form a smooth concave side having the same radius of curvature, wherein the second side surface of the upper structure, the fourth side surface of the lower structure, and the second arm of the coupler form a smooth convex side having the same radius of curvature.