Patent ID: 8292800

Claim:
A system for facilitating obesity control comprising: a gastric banding device including an inflatable portion; an implantable fluid reservoir couplable to the inflatable portion; an implantable fluid handling device in communication with the implantable fluid reservoir and including a body at least partially defining a pump chamber having an inlet port coupled to the implantable fluid reservoir and an outlet port coupled to the inflatable portion, a piezoelectric diaphragm assembly including a working side defining a surface of the pump chamber and a substantially opposing actuator side and configured to operate at a at least one frequency, a compressible spring assembly positioned at the actuator side of the piezoelectric diaphragm assembly and structured to not adversely affect the at least one frequency of operation of the piezoelectric diaphragm assembly, and a space occupying layer disposed between the compressible spring assembly and the actuator side of the piezoelectric diaphragm assembly; and a drive assembly effective to cause piezoelectrical actuation of the piezoelectric diaphragm assembly thereby causing fluid to be drawn into the inlet port and out of the outlet port of the pump chamber.