Method and device for monitoring the flow rate of an infusion solution.

摘要

Method for controlling the flow speed of an infusion solution, such as hemofiltration or hemodiafiltration, comprising: - conducting the infusion solution from a closed source of infusion solution, via a tube, to a device pump, arranging the source at a particular height with respect to a measuring device of pressure providing hydrostatic pressure, pumping the infusion solution to an infusion device, characterized by - measuring the hydrostatic pressure at zero flow of the solution infusion through the measuring device of pressure - starting the flow of infusion solution - restricting the flow of infusion solution by means of a restriction device having an orifice of predetermined size, the restriction device being arranged in the tube , - measuring the pressure in the infusion solution by means of the pressure measuring device being arranged and l presiónaguas measuring device downstream of the restriction device, - calculating the flow speed of the infusion solution in dependence of the measured pressure, the predetermined hole size in the restriction device and the hydrostatic pressure.