I. History: In 1975, Sadahisa Tsukata of Japan was first applied clinically and achieved success, and in 1985, the technology was perfected and applied worldwide, and in 1990, it was applied in China. Second, the characteristics: 1, high safety (diameter 5.6mm) 2, does not interfere with the spinal canal does not affect the stability of the spine, trauma is small. 3, the choice of indications is the key to Cheng Fei Hospital Rehabilitation Department Chen Yong III, advantages and disadvantages 1, non-obtrusive incision, pain greatly reduced trauma, safe and precise efficacy, faster postoperative recovery is the new frontier of minimally invasive surgery. 2, surgery from rejection, suspicion to acceptance. 3, clinical research results make the technology more mature. 4.Percutaneous puncture disc cut and suction, collagenase lysis, posterior discoscopy technology, forming the core of minimally invasive technology. 5.The selection of indications and expansion of the scope of indications will remain the core issue for some time in the future. 6.The combination of discectomy and collagenase lysis has entered a heart stage. Fourth, the positioning of intervertebral disc cut and suction 1, percutaneous puncture cervical and lumbar disc cut and suction is a method of treatment of intervertebral disc, is a non-vascular interventional technology between conservative treatment and open surgery as a means of intermediate limited technology. 2, this technology enriches the treatment of disc herniation, providing patients with a new way of minimally invasive and efficient without disturbing the spinal canal and affecting the stability of the spine. 3, it together with conservative treatment and open surgery constitute a new system of treatment of disc herniation therapeutics, and each of their technologies complement, cross, and coexist without replacement. V. Principle of discotomy and aspiration 1. decompression (principle) 2. aspiration (means) 3. repositioning (result) VI. Selection of indications for lumbar disc herniation and aspiration 1. confirmed lower lumbar disc herniation, the image is consistent with the signs 2. invalidated by conservative treatment for one month or recurrent. 3.Simple herniation, not more than half of the sagittal diameter of the vertebral canal, smooth surface, clear boundary, regular shape, and no acute angle formation. 4.The second power source of myelography is good. 5, the image sees the disc displaced horizontally, and the prolapse is not greater than 0.5 cm. 6, except for cervical and lumbar syndrome. Seven, the thinking of the selection of indications 1, the signs-based imaging is an indispensable diagnostic basis. 2.Analysis of imaging data from the perspective of discotomy and aspiration to assess the relationship between the direction, extent, size, and degree of disc herniation and surrounding tissues. 3.Intra- and extradural non-disc-derived neurological compression. 4, cervical and lumbar syndrome 5, discotomy and aspiration is only a method no substitute for other techniques of the mission. The classification of ossification 2, primary ossification secondary to herniation 3, intermediate interval 4, tolerance of the spinal canal 5, relative indications for disc aspiration, and under the principle of disc aspiration 9, on the second power source 1, elasticity of the annulus fibrosus (volumetric elasticity, modal properties) 2, new theory of spinal stenosis mechanism (ligamentum flavum, internal diameter of the spinal canal) 3, sliding type prolapse 4. open surgery 5. myelography 6. tension of the posterior longitudinal ligament as the primary power source 7. quantitative criteria for the efficacy of discotomy 10. staging of herniated discs in the cut-and-suction procedure 1. bulge: limited (destabilized) diffuse 2. protrusion: lateral, central, extreme lateral, bulging with impaction 3. prolapse: sliding (central), cemented (free) contraindications Central: When good and bad, call left and call right contraindicated traction Eleven, surgical design 1, design of the three elements: paracentral distance 8-12cm into the needle angle 30-45 degrees into the disc point 1 – 3 points 2, design purposes: maximize the efficiency of decompression, as close as possible to the center of decompression, away from the nerve root and dural sac to avoid collateral damage.