Patent ID: 7044002
Filing Date: 2006-05-16
Classification: A61M,G01F

Abstract:
1. A method for monitoring flow speed of an infusion solution, the method comprising: conducting the infusion solution from a closed source of infusion solution, via a tube to a pump device; arranging the source at a height with respect to a pressure-measuring device configured to provide a hydrostatic pressure; pumping the infusion solution to an infusion device; measuring with the pressure measuring device the hydrostatic pressure at zero flow of the infusion solution; starting a flow of infusion solution; restricting the flow of infusion solution so that the restricted flow rate is predetermined; measuring pressure in the infusion solution with the pressure-measuring device, the pressure-measuring device being arranged downstream of a location of flow restriction; and calculating flow speed of the infusion solution based upon the measured pressure, the predetermined restricted flow rate, and the hydrostatic pressure.