Patent ID: 8097034

Claim:
An interbody spinal implant for insertion across the surgically corrected height of a disc space between two adjacent vertebral bodies of a spine, said implant comprising: a leading end, a trailing end opposite said leading end, and a mid-longitudinal axis through said leading and trailing ends; an upper member having a portion being at least in part arcuate adapted for placement toward and at least in part within one of the adjacent vertebral bodies; a lower member having a portion being at least in part arcuate adapted for placement toward and at least in part within the other of the adjacent vertebral bodies, at least a portion of said upper and lower members being moveable relative to one another; and two expanders adapted to contact and move apart said moveable portions of said upper and lower members at least in part by rotation of said two expanders in planes generally perpendicular to the mid-longitudinal axis of said implant, each of said two expanders having a non-circular cross section transverse to the axis of rotation, wherein one of said two expanders is positioned adjacent said leading end and the other of said two expanders is positioned adjacent said trailing end, said two expanders being spaced apart from one another along the mid-longitudinal axis of said implant, each of said two expanders being rotatable independent of the other of said two expanders.