Patent ID: 6305212
Filing Date: 2001-10-23
Classification: A61M,G01F,G01N,Y10T

Abstract:
A disposable fluidic module for sensing plural characteristics of a flowing medium, said module comprising:an inlet port for receiving the flowing medium at said module;a flow meter for receiving the flowing medium from said inlet port and configured in the form of a fluidic oscillator for transversely oscillating said flowing medium at an oscillation frequency that varies as a function of the velocity of said flowing medium, said fluidic oscillator being defined as a plurality of flow channels; anda capillary member for receiving output flow from said fluidic oscillator and establishing a pressure drop in said output flow, said capillary member comprising a common flow entrance, a common flow exit and a plurality of capillary passages extending in flow communication between said entrance and exit, said capillary passages having transverse cross-sections that are very much smaller than transverse cross-sections of said flow channels in said fluidic oscillator;wherein said module is a rigid member, and wherein said fluidic oscillator and said capillary passages are formed as flow passages defined in said rigid member.