Principle of surgery The penile sensory pathway starts from the sensory apparatus in the skin of the penis, the head of the penis, the urethra and the corpus cavernosum of the penis, and sends out nerve fibers that fuse to form the dorsal penile nerve bundle and join other nerve fibers to become the internal pubic nerve, which then ascends to the spinal cord via the dorsal root of the sacral nerve, and after the receptors are activated, they transmit pain, temperature and tactile information to the hypothalamus and cortical layer for perception. With contact stimulation, nerve impulses from the penile skin and the penile head are transmitted through the dorsal penile nerve to initiate and maintain a reflex penile erection. After dorsal penile nerve selective excision, the sensitivity of the penile head can be reduced, the ejaculatory stimulation threshold can be increased, the latency of ejaculation (duration of sex) can be prolonged, and the quality of sexual life of the patient can be improved. Generally, sexual life can be started 3~4 weeks after surgery, with good safety performance and an efficiency rate of about 90%. Patients have significantly prolonged sexual life and their ability to control ejaculation consciously is greatly enhanced. Risks of surgery and clinical analysis 1. The traditional view is that premature ejaculation is mostly due to psychological causes, such as improper sexual awareness in childhood, sexual trauma, sexual guilt, lack of confidence in sexual life, etc. In recent years, many studies at home and abroad have shown that the excitability of the dorsal penile nerve in patients with premature ejaculation, especially the excitability of the sensory nerve of the penile head, is higher than normal, so that the ejaculatory latency and ejaculatory reflex arc are shorter during sexual intercourse, and the ejaculatory stimulation threshold is low, which can easily induce premature ejaculation during sexual intercourse. The sensory pathway of the penis starts from the sensory apparatus in the skin of the penis, the head of the penis, the urethra and the corpus cavernosum of the penis, and sends out nerve fibers to fuse to form the dorsal penile nerve bundle, and join other nerve fibers to become the internal pubic nerve, and then rise to the spinal cord through the dorsal root of the sacral nerve. for perception. With contact stimulation, nerve impulses from the penile skin and the penile head are transmitted through the dorsal penile nerve to initiate and maintain a reflex penile erection. Therefore, after selective penile dorsal nerve amputation, the sensitivity of the penile head can be reduced, the ejaculatory stimulation threshold can be increased, the ejaculatory latency can be prolonged, and the quality of sexual life of patients can be improved. 4.Usually the dorsal penile nerve is 2 branches, we found through basic research that the number of dorsal penile nerve is 3.6 branches ± 1.2 branches. We found during the surgery that the number of primary premature ejaculation is as many as 8-9 nerves, and even 13 nerves in some patients, which causes high sensitivity to sexual stimulation and premature ejaculation. 5.The surgery adopts circular incision, which can completely expose and remove all the dorsal penile nerves, then according to the theoretical basis, three dorsal penile nerves are preserved and sutured with lamb’s intestine, without removing the sutures. 6.The surgery will not lead to impotence or male infertility. Because the erectile function of men is formed by the filling and expansion of the penile corpus cavernosum and the normal function of venous occlusion, the surgery did not affect the blood flow to the penis. Because sperm is formed in the testicles and discharged out of the body through the reproductive ducts, the operation is an incision at the coronal sulcus and does not injure the testicles and reproductive ducts, so it will not affect the male reproductive function.