CANNULAR FOR FORAMINOTOMY AND FORAMINOTOMY DEVICE

摘要

The present invention relates to a cannula for vertebral intervertebral extension, a tissue remover, and an intervertebral dilator. The intervertebral extension device comprising: a cannula that is inserted into the body through the skin for expanding the vertebrae of the vertebra and provides a passage through which the intervertebral foramen can be reached; A cutter hand piece (31) inserted into the body through a passage secured by the cannula to remove a substance to be removed in the intervertebral space; And a controller having a control unit connected to the cutter handpiece via a connecting cable. Since the tissue remover removes not only the cohesive tissue pressing the nerve by rotating the rotating shaft having the cutting blade at the tip at a high speed, but also the abdominal bone, it is possible to perform the effective treatment, and the cutter It is possible to prevent the contamination of the inside of the body, and in particular, it is possible to prevent the cutting edge portion from being covered with the protruding tube and causing damage to the normal tissue by the cutting edge portion. Further, It is possible to suitably cope with the condition of the cutting target portion.