Patent ID: 8852282

Claim:
A spacer for maintaining the position of adjacent vertebrae, the spacer including: a distal end and a proximal end; top and bottom surfaces spaced by at least two sides, the top and bottom surfaces defining a height, and the sides defining a width; wherein each of the two sides comprises a depressed region sunk into the side including a sloped surface at least toward the proximal end of the spacer, the distance between the sloped surfaces of the sides decreasing proximally to form a web, and wherein the web is sized and configured to aid distribution of bone graft material to either side of the spacer, wherein the web separates a top cap and a bottom cap at least at the proximal end of the spacer, the thickness of the web decreasing proximally to form a wedge, and wherein the top cap and the bottom cap include surfaces that taper such that the top cap and bottom cap become narrower toward the proximal end of the spacer.