A
Transcutaneous Electrical Nerve Stimulation (TENS) is a non-drug, non-invasive method for pain relief. The analgesic effect is achieved by blocking the transmission of pain nerve signals by stimulating sensory nerves with mild and trace currents (usually not more than 25 microcoulombs per unit time). Clinical research has proved that the dysmenorrhea analgesic instrument made of TENS principle is effective in the treatment of dysmenorrhea and is a method to replace drugs for pain relief. Because it is non-invasive and has no side effects, it has been widely used in Europe and the United States. The physiotherapy instrument made of TENS principle belongs to the second class of medical instruments, which is used to relieve pain symptoms and treat chronic and stubborn pain, acute post-traumatic pain and postoperative pain. And arthritis-related pain (see FDA Guidance: Specific indications for use for the TENS device that we consider to be for pain relief include symptomatic relief of chronic intractable pain, relief of acute post-surgical and post-traumatic pain, and relief of pain associated with arthritis.）
