Patent ID: 6562039
Filing Date: 2003-05-13
Classification: A61B,A61F

Abstract:
A spinal fixation and retrieval device having an intervertebral disc main body formed of:a cone-like body at one end, the cone-like body having a flat top; a solid column-like body connected to a base of said cone-like body; wherein said cone-like body has a length which is less than one third of a length of said intervertebral disc main body; wherein said column-like body is provided with two or more threads or annular teeth having an interval thereof at least two times of a width of a base of said two or more threads or annular teeth; the disc main body adapted to be inserted between end plates of adjacent vertebrae; and wherein the column-like body has a larger diameter at the end near the base of the cone-like body than at the tail end thereof.