Patent ID: 7566209

Claim:
A peristaltic pump assembly for moving a working fluid comprising: an outer tube; at least one wire coil embedded within the outer tube; an expandable fluid carried by the outer tube that changes in volume due to the presence of at least one of a magnetic field and an electric field; a flexible member comprising a tube disposed inside the outer tube and carrying the working fluid, wherein the flexible member defines a flow channel within which the working fluid can move, and wherein the flexible member include an inner surface and at least one projecting member coupled to the inner surface of the flexible member, the at least one protecting member being helical and extending axially along the inner surface of the flexible member, the at least one projecting member able to move into the flow channel to thereby direct the movement of the working fluid; and a field generator coupled to the at least one wire coil operable to cause the expandable fluid to change in volume by applying at least one of a magnetic field and an electric field to the expandable fluid via the at least one coil, which, in turn, moves the flexible member and the at least one projecting member to increase the pressure of the working fluid to thereby move the working fluid.