Patent ID: 8764624

Claim:
An implantable device that uses inductive coupling to adjust a circumference of a gastric band, the implantable device comprising: an antenna that receives power from a remote device and that is configured to be tuned to vary the power received from the remote device; a converter that converts the power to a low voltage direct current; a charge pump that converts the low voltage direct current to a voltage signal, wherein the charge pump is turned off using a telemetric signal received from the remote device; and an electromechanical device, coupled to the gastric band, that increases and decreases the circumference of the gastric band using the voltage signal received from the charge pump, wherein the electromechanical device is powered solely by the voltage signal from the charge pump, and the electromechanical device excludes and is not configured to be powered by or coupled to an implantable energy source.