A British surgeon has invented a new device that kills pain without the use of drugs. The gadget, which aims to reduce knee pain and the need for operations, is said to block the pain signal as the spinal cord is unable to carry both the pain and the vibration at the same time. This technique, using vibration to block pain signals, is not new; first appearing in the American civil war before being re-examined in the 1960’s and eventually appearing on the market in 2009. This technology, which is powered by AAA batteries, is the first time the product has been widely available for knee pains.