Patent ID: 8092365

Claim:
A pumping device, comprising: an outer wall formed of a substantially unbending material defining an inner surface that defines an outer boundary of a first lumen inside the outer wall and an outer surface outside the outer wall, said outer wall configured to be implanted in and reside within a body cavity; an inner wall, disposed entirely within said first lumen, said inner wall having an outer surface that defines an inner boundary of said first lumen and an inner surface that defines an outer boundary of a second lumen, said inner wall formed of a material that is elastically deformable; a fluid material, filling said first lumen between said inner wall and said outer wall, said fluid material having a mechanical property that makes said fluid material adapted to transmit applied force waves; and an actuator, that actuates said fluid material to create motion in the fluid material at a frequency that causes constructive wave interaction within the fluid material and adapted to drive a fluid flow through said second lumen; and a controller, that controls the actuator to produce a lower amplitude actuation of said fluid material at said frequency, where said actuation at said frequency produces a higher amplitude actuating of said first lumen, where said higher amplitude of the actuation of the first lumen is greater than said lower amplitude of actuation of said material, wherein said controller controls the lower amplitude actuation to said frequency that constructively interferes, to create the higher amplitude actuation, and wherein said frequency of said lower amplitude actuation is a resonant frequency that causes a resonant effect in the fluid material, to create said higher amplitude actuation.