Patent ID: 6824564
Filing Date: 2004-11-30
Classification: A61B,A61F

Abstract:
A spinal implant comprising:a hollow body having a distal end, a proximal end, and a pair of lateral walls extending from said distal end to said proximal end, said lateral walls having concave, non-threaded interior surfaces for defining an at least partially cylindrical internal space between said lateral walls; and an anchoring member having bone anchoring projections including a screw thread on an exterior surface thereof, wherein at least one of said lateral walls adjacent the proximal end of said hollow body includes a reentrant thread adapted to cooperate with the screw thread of said anchoring member when said anchoring element is rotated for enabling said anchoring member to be screwed into the internal space of said hollow body, wherein said anchoring member has a proximal end, a distal end, a major axis extending between the proximal and distal ends, an interior space, and a fork surrounding the interior space, said fork including branches extending along a major axis of said anchoring member, said branches having a frustoconical exterior surface with a diameter that decreases from the proximal end toward the distal end of said anchoring member, and wherein the screw thread comprises a helical band connected to said fork and encircling said fork and the interior space of said anchoring member.