Patent ID: 7524298

Claim:
A method, comprising: pumping in a human body, using a collector tube having a tip section, a discharge tube having an end section, and a tube shaped element between said collector tube and said discharge tube, said pumping including pinching at least one portion of said tube shaped element to pump fluid from said collector tube to said discharge; sensing a pressure in a body cavity and producing an output indicative of the sensed pressure; and controlling said pinching based on said output indicative of the sensed pressure, to control an amount of said pumping using an automated controller to create plural pressure waves, which are reflected, said controlling creating said pressure waves at a first frequency and duty cycle to sum said pressure waves and said reflected pressure waves by controlling said pinching to create a new pressure wave at a time when another wave is reflected to a location of said pinching, to pump fluid within the human body in a first direction from said collector tube to said discharge tube.