Intra-gastric fastening devices are disclosed herein. Expandable devices that are inserted into the stomach of the patient are maintained within by anchoring or otherwise fixing the expandable devices to the stomach walls. Such expandable devices, like inflatable balloons, have tethering regions for...http://www.google.de/patents/US20050222592?utm_source=gb-gplus-sharePatent US20050222592 - Intra-gastric fastening devices