A medical device is typically a product that works on or inside the human body, either temporary or permanent, and is aiming at prevention, diagnosis, monitoring or treatment of diseases. The key difference versus traditional medicines is that a medical device primarily works mechanically as opposed to pharmacologically, i.e. it works alongside or with your body versus affecting the chemistry of the human cells. Nowadays medical devices are used for alleviating and treating many severe and chronic diseases of heart, brain, bladder, digestive tract etc. with a superior efficacy to traditional therapy with chemical molecules. This because they typically work directly where your body needs help.