Patent ID: 8491283

Claim:
A micropump comprising: a tube unit which includes a tube having elasticity and a circular-arc-shaped part and a tube guide frame for holding the tube, the circular-arc-shaped part being disposed between a pair of lobes of the tube guide frame when viewed in plan; a control unit which has a plurality of fingers extending from the center of the circular-arc shape of the tube in radial directions, a cam for sequentially pressing the plural fingers from an inlet side to an outlet side of the tube, a drive unit for giving rotation force to the cam, a control circuit unit for controlling operation of the drive unit, and a device frame for holding the plural fingers, the cam, the drive unit, and the control circuit unit, the device frame including sidewalls that define a pair of recesses that correspond to the pair of lobes of the tube guide frame; a reservoir communicating with an inlet port of the tube; and a power source for supplying power to the control circuit unit, wherein the tube unit is detachably coupled to the control unit substantially in the horizontal direction with respect to the rotation surface of the cam and attached to the inside of a space produced by the device frame such that the lobes of the tube guide frame mate with and abut the sidewalls of the device frame that define the recesses.