Patent ID: 8080062

Claim:
An implant to fit within an intervertebral space formed between first and second vertebral members, the implant comprising: a body having a walled perimeter being substantially open at its superior and inferior ends, the body including a height defined by a superior surface that contacts the first vertebral member and an inferior surface that contacts the second vertebral member; and a fixation mechanism, comprising: a screw having a screw head extending through a wall of the walled perimeter of the body and a threaded shaft extending into the interior of the body: an internally threaded ring provided about the threaded shaft of the screw; and a pair of arms hingedly connected to the ring, the pair of arms being diametrically disposed about the screw shaft in superior and inferior directions; such that upon rotation of the screw head from outside the implant, the ring moves toward the screw head thereby causing the pair of arms to move from a first position wherein the arms are within the walled perimeter of said body to a second position wherein a portion of said arms extend outside the walled perimeter of said body in the superior and inferior directions such that said portions of said arms extend into the first and second vertebral members to affix said implant within the intervertebral space therebetween.