Patent ID: 8715350

Claim:
An intervertebral disc implant, comprising: an upper bearing member having a body and an outer bearing surface; a lower bearing member having a body and an outer bearing surface; an articulation interface between the upper and lower bearing members for allowing relative movement therebetween; a securing member disposed on one of the bearing members having an elongate shaft member having a longitudinal axis and a bone-engaging member formed on the shaft member wherein the elongate shaft member and the bone-engaging member are configured to be rotated about the longitudinal axis of the elongate shaft member, wherein the bone-engaging member has a plate-like body extending transversely from the shaft member, the plate-like body having opposite main surfaces having a thickness therebetween and a maximum lateral width thereacross that is greater than the thickness, the plate-like body further including an outer peripheral edge extending about the main surfaces, with the main surfaces tapering down to an elongate cutting edge portion formed along the plate-like body peripheral edge with the cutting edge portion extending radially outwardly from the elongate shaft member, the plate-like body having an undeployed position with the radially extending cutting edge portion facing an adjacent bone so that turning the elongate shaft member toward a deployed position causes the cutting edge portion to cut into and lead the plate-like body into the adjacent bone.