Patent ID: 8617248

Claim:
An interbody spinal implant, comprising: a body having a top surface, a bottom surface, opposing lateral sides, opposing anterior and posterior portions, a substantially hollow center, a single vertical aperture extending from the top surface to the bottom surface, defining a perimeter, and having a shape, dimensions, and position on the top surface and the bottom surface that define a transverse rim with a varying thickness on the top surface and on the bottom surface of the body, having a maximum width at its center, between the opposing lateral sides, and tapering inwardly from the center to each of its ends, one end proximate the anterior portion and the other end proximate the posterior portion, and a surface area of about 120 mm 2 to about 1200 mm 2 , wherein at least a portion of the transverse rim comprises a vertebral endplate bone contact surface comprising a roughened surface topography, without teeth, surrounding the entire perimeter of the vertical aperture, and having a surface area of about 60 mm 2 to about 600 mm 2 , the body having generally rounded and blunt intersections defined along the entire lengths between the top surface and the lateral sides and the bottom surface and the lateral sides; and the body having at least one sharp edge between the top and bottom surfaces and the anterior portion or the posterior portion.