Patent ID: 7608105
Filing Date: 2009-10-27
Classification: A61B,A61F

Abstract:
1. A method of promoting fusion of adjacent vertebral bodies comprising: providing a conically-shaped cage body having threading on an outer surface thereof and a plurality of apertures extending through said outer surface thereof, said cage body including a leading end having a first diameter and a trailing end having a second diameter that is larger than said first diameter, wherein said apertures increase in size from said leading end toward said trailing end; positioning said leading end of said cage body adjacent an intervertebral disc space between an upper vertebral body and a lower vertebral body, wherein said upper and lower vertebral bodies have opposing end faces that define upper and lower limits of said intervertebral disc space; while urging said leading end of said cage body into said intervertebral disc space, turning said cage body so that said threading bites into said opposing end faces of said upper and lower vertebral bodies for anchoring said cage body to said upper and lower vertebral bodies.