The balloon is brought into the stomach through the mouth without the requirement for surgery. In this an endoscopic camera (gastroscope) is inserted into the stomach. If no abnormalities are observed, the balloon is put through the mouth and down the throat into the stomach. Once inside the stomach, it is then loaded with a clean saline solution through a little filling tube attached to the balloon. Once filled, the doctor removes the tube by carefully pulling on the outside end, leaving the balloon inside the stomach.