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Percutaneous laminectomy method

PURPOSE: To enable safe and effective percutaneous laminectomy by irradiating a laser beam of a wavelength in a specified range to a herniated intervertebral disk region in conducting using laser. CONSTITUTION: In percutaneous laminectomy operation, a tip part of a probe 100 is inserted into a damaged, namely, herniated intervertebral disk region 18c, using location limitting and guide with radiation, preferably a C-arm-type fluoroscope with intensified image brightness. This insertion is made till the tip of the probe 100 penetrates the fiber ring of the intervertebral disk 18b. Then a cannula and an expander are outside fitted to this probe 100, and after the cannula is inserted up to the intervertebral disk region 18c, the percutaneous laminectomy is conducted by applying a laser beam by an introductory means. As this laser light, laser light of wavelength 350-1,000nm, especially, one selected from 647nm, 488nm, 780nm, 582nm, 660nm and the like is used.