Patent ID: 8622888

Claim:
A control system for controlling a controllable gastric band ( 1 ), comprising a control unit ( 11 ), wherein the gastric band ( 1 ) includes a non-extensible back ( 4 ) and a chamber ( 2 ) arranged on a stoma side of the back ( 4 ) and capable of being filled with a fluid, said chamber being in connection with a second chamber ( 5 ) and having at least one sensor ( 7 ) to detect pressure values on the gastric wall ( 3 ), and wherein the at least one sensor ( 7 ) is connected with a transmission device ( 8 ) for wireless transmission of the detected pressure values to the control unit ( 11 ), and wherein the control unit ( 11 ) includes a receiving device ( 13 ) for receiving the pressure values transmitted from the at least one sensor ( 7 ) of the gastric band ( 1 ), as well as a housing ( 12 ), wherein the system comprises a memory for storing a time course of pressure values, wherein the time course comprises pressure values detected by the at least one sensor ( 7 ) over a period of time and recorded as a function of time, and a processing device ( 16 ) configured to evaluate amplitudes and durations of increases in the pressure values in the stored time course, wherein the increases correspond to primary and secondary peristaltic waves in the esophagus of a patient in whom the gastric band is implanted so as to enable automatic control of the gastric band based on the evaluated amplitudes and durations.