Patent ID: 6159245
Filing Date: 2000-12-12
Classification: A61B,A61F

Abstract:
An interbody implant for enhancing fussion of adjacent vertebral bodies comprising:(a) a cage member of generally rectangular cross-section having four mutually perpendicular sidewalls of predetermined height dimension allowing insertion between adjacent vertebral bodies, and with an opposed pair of said four sidewalls, each of said opposed pair of sidewalls including an aperture therethrough of a predetermined diameter; and(b) a locking screw with threads of a predetermined pitch and a length allowing threaded insertion into said apertures, the locking screw having a root diameter less than said predetermined diameter and a crest diameter greater than the predetermined height dimension of the opposed pair of sidewalls and adapted to threadingly engage the adjacent vertebral bodies when the cage member is inserted between the adjacent bodies and the locking screw is threaded into the apertures in the opposed pair of sidewalls.