METHOD AND DEVICE FOR MEASURING AND CONTROLLING THE DOSAGE OF SMALL QUANTITIES OF FLUID BY MEANS OF A RESONATING NEEDLE, AND RESONATING NEEDLE SUITABLE FOR THIS PURPOSE

摘要

A resonating needle is described, which is adapted to be used in a device for measuring and controlling the dosage of a small quantity of fluid, and which comprises: a needle (1) adapted to contain said small quantity of fluid; a resonating element of the piezoelectric type (2), coupled to said needle and adapted to be energized in order to detect variations of oscillation parameters of the needle and of the resonating element for the purpose of determining said dosage measurement and control.