A food intake restriction apparatus and method includes and uses an operable restriction device implanted in a patient and engaging the stomach or esophagus to form a restricted stoma opening in the stomach or esophagus. A source of energy for energizing the restriction device, and a control device for...http://www.google.de/patents/US6461293?utm_source=gb-gplus-sharePatent US6461293 - Controlled food intake restriction
