Ultrasonic cannon is a medical instrument using the ability to high-energy focused ultrasound, compared with radio frequency and laser, high-energy focused ultrasound in the treatment process, compared to radio frequency, laser high pain, ultrasound cannon comfort, ultrasound cannon unique ultra-pulse technology is also one of the weapons that reduces the degree of pain, peripheral nerve tissues have not yet responded to the momentary energy emission has been finished, so no pain and swelling is normal.