A high precision micropump.

Abstract

A pump which delivers from 0?01 to 0?65 ml fluid per beat at a frequency of 10-80 beats per min is described. Consecutive discharges agree within 1?5% of the average. Pumping is achieved by rhythmically compressing an elastic tube which has one-way valves at either end. Compression is achieved by oil pressure and controlled by an electronic regulator. This pump surpasses other micropumps with regard to precision, lack of hemolysis and versatility of capacity, frequency and pressure profile.