Similar to a spinal endoscope, an intervertebral foramoscope is a light-equipped tube that enters the intervertebral foramen from the side or side and back of the patient’s body (either in a flat or oblique fashion) and performs the procedure in a safe working triangle. The surgery is performed outside the disc’s fibrous annulus, and the herniated nucleus pulposus, nerve roots, dural sac and hyperplastic bone tissue can be clearly seen under direct endoscopic vision. The herniated tissue is then removed using various types of grasping forceps, the bone is removed microscopically, and the broken fibrous annulus is sealed with radiofrequency electrodes. Small trauma: the skin incision is only 6mm, just like the size of a soybean grain, bleeding less than 10ml, and only 1 stitch after surgery. It is the minimally invasive surgery for the treatment of lumbar disc herniation with the least trauma and the best effect among similar surgeries. The TESSYS™ intervertebral foraminoscopy technology (different from discoscopy) introduced by Guangdong Provincial People’s Hospital is an “outside-in” technology. Using a uniquely designed intervertebral foramoscope patented by Joimax and the corresponding surgical instruments, the foramen is entered from the side or back of the patient’s body and the procedure is performed in the working triangle, where the working trocar is placed in the epidural space, below the nerve root, thus avoiding damage to the nerve root. After removing the herniated nucleus pulposus tissue under direct endoscopic vision, the working trocars are not placed in the intervertebral space, but from outside the intervertebral disc annulus using a complete set of surgical instruments uniquely designed by Joimax, and the residual tissue is ablated, hemostatic, and closed using the local The principle of local heat contraction is used to close the broken fibrous ring. During the procedure, the patient is fully awake and the surgeon and patient can communicate with each other. The procedure can be performed in the lateral or prone position, depending on the situation. The procedure is simple and can be completed in less than one hour. Compared to other current minimally invasive spinal nucleus pulposus removal techniques, TESSYS™ is more indications, less invasive (6.3 mm diameter for the foramen and 16 mm diameter for the disc), less invasive, more effective (95% efficacy) and faster recovery (one day post-operative activity and three days post-discharge). This technique removes herniated disc tissue under endoscopic surveillance through a special lateral intervertebral foramen approach, which is less invasive than the usual posterior approach. Typical laminectomy in order to approach the target point necessarily causes extensive damage to structures that play an important role in spinal stability, which usually requires immediate spinal fusion. In contrast, the laminectomy technique gradually enlarges the intervertebral foramen with a patented reamer and appropriate medical instrumentation, completely removing any herniated or prolapsed fragments as well as the degenerated inflamed nucleus pulposus. It also provides continuous irrigation and anti-inflammatory treatment of the lesion, uses radiofrequency electrodes to repair the annulus fibrosus, ablates nerve sensitizing tissue, blocks the annular nerve branches, and relieves the patient of soft tissue pain. Compared with traditional surgery, intervertebral foraminoscopy has obvious advantages: 1. Minimally invasive: the skin incision is only 6 mm, with minimal bleeding, short operation time, no postoperative scar, in line with the aesthetic point of view. 2.Precision: lateral approach, avoiding interference with the spinal canal and nerves by posterior surgery; no biting of the vertebral plate, no destruction of the paravertebral muscles and ligaments, no effect on the stability of the spine. 3, high safety: local anesthesia, intraoperative interaction with the patient, no injury to nerves and blood vessels; basically no bleeding, clear surgical field of view, effectively avoid the risk of misoperation. 4.Fast recovery: the operation time is short, and the patient can go down to the ground the next day after the operation, and the hospitalization time is 3~5 days, and the patient can resume normal work and physical exercise in 3~6 weeks on average. 5.Almost no complications: small trauma, low chance of thrombosis and infection; no postoperative scarring at the posterior important structures leading to adhesions of the spinal canal and nerves. 6, wide range of indications: the purpose of the operation is direct, and any herniated disc fragment can be removed; it can deal with almost all types of disc herniation, some spinal stenosis, intervertebral foraminal stenosis, calcification and other bony lesions. 7, high satisfaction of efficacy: immediate postoperative relief of pain and other symptoms, self-care of urination and defecation, simple care.