The lumbar intervertebral disc is located between two vertebral bodies and consists of three parts: the nucleus pulposus, the annulus fibrosus and the cartilage plate (illustrated below), of which the nucleus pulposus is the central part, the annulus fibrosus is the peripheral part, encircling the nucleus pulposus, and the cartilage plate is the upper and lower parts, which are connected to the bone tissue of the upper and lower vertebral bodies. If the annulus fibrosus loosens or ruptures due to long-term improper posture or external impact, the nucleus pulposus may protrude or prolapse backward and press on the nerve, which becomes what is commonly referred to as lumbar disc herniation. When conservative treatment is ineffective and surgery is needed, most patients can choose foraminoscopic surgery (most of them can have local anesthesia and lateral access, which is less traumatic), and for those who are not suitable for foraminoscopic surgery, minimally invasive discoscopic surgery (MED) surgery can be chosen. For some patients undergoing MED surgery, an upgraded version of the procedure can be performed at the same time – minimally invasive discoscopic nucleus pulposus removal + preservation and suturing of the annulus fibrosus, i.e., after removing the nucleus pulposus and relieving nerve root compression, a single-use annulus fibrosus suture is used to close the annulus fibrosus breach to promote repair of the broken annulus fibrosus, and the disc tissue will not The disc tissue will not easily protrude backward again. Several clinical trials at home and abroad have demonstrated that the use of a “single-use annulus fibrosus suture” to close the broken annulus fibrosus after surgery can minimize recurrence (the recurrence rate is between 3 and 27% according to foreign statistics). Disc nucleus pulposus removal with annulus fibrosus suture technique is one of the most effective and complete minimally invasive methods for the treatment of disc herniation. Surgical diagram.