Techniques associated with an implant system for imparting vibratory massage to tissue within a body is disclosed. Methods include placing an implant device near a surface of a stomach, the implant device configured to produce and communicate a vibration to stomach tissue, the implant device including a case forming a portion of an exterior of the implant device and defining an interior of the implant device, a vibration generator mounted on the case to vibrate the implant device, and a tissue engaging structure located on the exterior surface of the case to engage the stomach tissue, securing the implant device to the stomach, and activating the vibration generator of the implant device to cause the implant device to vibrate against the stomach, wherein the vibration stimulates a nerve to suppress an appetite.