Fibrous ring incision tool under spine UBE (Ultra Business Explosion) mirror

The invention discloses a spinal column fiber ring incision tool under a UBE mirror, and particularly relates to the technical field of cutters, the spinal column fiber ring incision tool comprises a shell and a cutter head, the surface of the shell is provided with an adjusting device, the adjusting device can contract and rotate the cutter head, and the adjusting device comprises a sliding groove formed in the surface of the shell; a sliding groove is formed in the surface of the shell, a first sliding block is slidably connected into the sliding groove in the surface of the shell, a plurality of first threaded grooves are formed in the circumference of the end, close to the sliding groove, of the shell at equal intervals, first bolts are inserted into the first threaded grooves in the surface of the shell in a threaded mode, and first connecting blocks are connected to the surfaces of the first bolts in a threaded mode. According to the cutting tool, an operator shrinks the tool bit through the adjusting d