Patent ID: 8409292
Filing Date: 2013-04-02
Classification: A61B,A61F

Abstract:
1. An interbody spinal fusion implant for insertion across the surgically corrected height of a disc space between two adjacent vertebral bodies of a human spine, said implant comprising: a leading end for insertion first into the disc space, a trailing end opposite said leading end, a length between said ends, a mid-longitudinal axis passing through said leading and trailing ends, and a cross-sectional profile in a plane that is proximate said trailing end and is perpendicular to the mid-longitudinal axis, the cross-sectional profile including two generally arcuate portions and two generally linear portions, said trailing end including a threaded bore with a central longitudinal axis that coincides with the mid-longitudinal axis of said implant; opposed upper and lower portions adapted to contact the adjacent vertebral bodies when implanted in the spine, said opposed upper and lower portions of said implant including at least one opening in communication with one another for permitting for the growth of bone from vertebral body to vertebral body through said implant; and bone engaging projections for engaging said implant to the adjacent vertebral bodies, said bone engaging projections extending from at least a portion of said opposed upper and lower portions, each of said bone engaging projections having a forward-facing facet directed at least in part toward said leading end, each of said forward-facing facets having a slope relative to the mid-longitudinal axis, the slope of said forward-facing facets decreasing from one of said ends toward another of said ends.