Patent ID: 6343514
Filing Date: 2002-02-05
Classification: A61B,A61M,G01F,G01K,G01L

Abstract:
A device for determining pressure, temperature and a flow parameter of a flowing fluid, comprisingi) a sensor support body (13) mounted for insertion into a vessel of a living body and having a diaphragm (15) covering a cavity (14) formed in said support body (13); ii) a pressure sensitive element (41), having a known temperature dependence, mounted on said diaphragm (15), and providing an output indicative of a pressure; iii) a temperature sensitive resistor (42) mounted in the vicinity of said pressure sensitive element (41) and having a known temperature dependence, providing an output signal indicative of a temperature, said resistor (42) also functioning as a temperature reference means for said pressure sensitive element (41); and iv) an electrical circuit (43, 44, 45, 46), connected to the pressure sensitive element and to the temperature sensitive resistor, for calculation of a flow parameter of said flowing fluid on the basis of the temperature signals.