Patent ID: 7399303
Filing Date: 2008-07-15
Classification: A61B,Y10S,Y10T

Abstract:
1. A bone-cutting device adapted for use in forming an implantation space in between and at least in part into two adjacent vertebral bodies where adjacent a disc space formed by the removal of disc material from a disc between the adjacent vertebral bodies of a human spine, said bone-cutting device comprising: a shaft having a longitudinal axis, a distal end, and a proximal end; a cutting portion on said shaft having a height transverse to the longitudinal axis of said shaft and at least two opposed forward facing sharpened cutting surfaces adapted to cut bone from each of the adjacent vertebral bodies; and a forward projecting portion on said cutting portion, said forward projecting portion being adapted to urge apart the adjacent vertebral bodies, said forward projecting portion having a height transverse to the longitudinal axis of said shaft, the height of said forward projecting portion being approximately the height of a restored disc space between the adjacent vertebral bodies and being less than the height of said cutting portion.