What is the principle of nerve block puncture needle therapy

Local anesthetics are used to block the brain nerves, spinal nerves and their ganglia, or sympathetic ganglia, so as to relieve pain, improve blood circulation and treat painful diseases through nerve block therapy. It is called nerve block therapy. Although nerve block therapy is performed in much the same way as nerve block therapy, the drugs used and their concentrations may vary depending on the purpose, as well as the positions taken during the procedure. The mechanism of nerve block therapy is as follows: (1) block the nerve conduction pathway of pain; (2) Blocking the vicious cycle of pain: Clinically, it has been observed that the analgesic time produced by local anesthetic nerve block is significantly longer than the anesthetic action time of local anesthetic itself; In some patients, the pain lasting for several years can be relieved by a single nerve block when various methods fail to treat it. This indicates that the local anesthetic is not the only mechanism of action for the treatment of pain and the block of local nerve conduction pathway. This is thought to be due to nerve block therapy cutting off the vicious cycle of "pain ® muscle tension or small vessel smooth muscle spasm ® pain intensification". (3) Improve blood circulation: sympathetic nerve block can improve the blood flow in the innervated area, thus effectively improving the pain caused by poor peripheral blood circulation. (4) Anti-inflammatory effect: Studies have confirmed that nerve block therapy, especially sympathetic nerve block therapy, has anti-inflammatory effect and thus produces good analgesic effect.