Patent ID: 6342074
Filing Date: 2002-01-29
Classification: A61B,A61F

Abstract:
An interbody spinal fusion implant adapted for insertion between adjacent vertebrae having spaced endplates that define opposite ends of an intervertebral space, the implant comprising:a generally hollow annular body defining substantially continuous interior and exterior surfaces extending between opposed annular first and second end surfaces, the interior surface defining an interior chamber, the body having an access passage formed therein extending between the interior and exterior surfaces and communicating with the interior chamber; first means adapted for receiving an associated first screw into a first screw-receiving passage formed therein and being disposed at a first angle between 30Â° and 45Â°, inclusive, to a central plane, the first screw-receiving means comprising a first protrusion extending into the access passage, the first protrusion including a first inclined surface generally facing toward the exterior surface wherein the first inclined surface is generally normal to the first screw-receiving passage; and, second means adapted for receiving an associated second screw into a second screw-receiving passage formed therein and being disposed at a second angle between 30Â° and 45Â°, inclusive, to the central plane, wherein the second angle is oppositely inclined relative to the first angle.