Transoral surgery for morbid obesity

Figure 1 The BioEnterics Intragastric Balloon. A: The balloon is smooth and spherical. The arrows at the equator point toward the valve. The radiopaque self-sealing and repenetrable valve with its Z-shape configuration (visible inside balloon) allows adjustment of the balloon volume from 400 to 800 mL; B: Plain abdominal radiograph showing balloon in body of stomach. A coin taped on the lower sternum permits follow-up comparisons of balloon size to detect premature deflation.