Remotely adjustable gastric banding system

A fluid reservoir for a remotely adjustable gastric banding system, the reservoir comprising:

• a housing;
• a flexible reservoir pouch disposed in the housing;
• a pump disposed in the housing and coupled to the flexible reservoir pouch via a valve, wherein the pump moves a fluid in the flexible reservoir pouch between the flexible reservoir pouch and an inflatable portion of a gastric band;
• and
• a circuit board disposed in the housing for driving the pump to move the fluid between the flexible reservoir pouch and the inflatable portion of the gastric band.

A remotely adjustable gastric banding system for filling and draining an inflatable portion of a gastric band, the system comprising:

• a housing defining a fluid reservoir;
• a flexible reservoir pouch disposed in the housing;
• a pump disposed in the housing and coupled to the flexible reservoir pouch via a valve, wherein the pump moves a fluid in the flexible reservoir pouch between the flexible reservoir pouch and the inflatable portion of the gastric band;
• a circuit board disposed in the housing for driving the pump to move the fluid between the flexible reservoir pouch and the inflatable portion of the gastric band;
• a coil channel disposed along a periphery of the housing;
• and
• a receiving coil disposed in the coil channel of the housing, wherein the receiving coil forms a loop around the housing, and wherein the receiving coil receives radio frequency signals from a remote transmitter to drive the pump.