An apparatus for providing a restriction and sensing an associated operational parameter, comprises a restriction device and a sensing device. The restriction device is configured to be secured around a portion of an anatomical structure. The restriction device is operable to form a restriction within...http://www.google.es/patents/US8083665?utm_source=gb-gplus-sharePatente US8083665 - Pressure sensors for gastric band and adjacent tissue
Pressure sensors for gastric band and adjacent tissue
