A flow rate sensor system for non-invasively measuring the flow rate of a bodily fluid. The system includes an encapsulated implant having a flow tube having an inlet and an outlet configured to receive a flow of a bodily fluid. A heating element externally coupled to the flow tube is configured to dissipate heat at a predetermined rate over a predetermined amount of time. A temperature sensor externally coupled to the heating element is configured to measure a temperature rise of the heating element over the predetermined amount of time. An implant microcontroller coupled to the temperature sensor is configured to determine the flow rate of the bodily fluid in the flow tube from the measured temperature rise and a curve fit to a stored set of previously obtained calibration measurements. An implant power and communication subsystem is coupled to the implant microcontroller configured to wirelessly receive power and wirelessly transmit and receive data. The system also includes an external device having an external microcontroller and an external power and communication subsystem coupled to the external microcontroller configured to wirelessly deliver power to the implant power and communication subsystem and transmit and receive data to and from the implant power and communication subsystem.La présente invention concerne un système détecteur de débit destiné à mesurer de manière non invasive le débit d'un liquide corporel. Le système comprend un implant encapsulé comportant un tube d'écoulement ayant une entrée et une sortie conçu pour recevoir un écoulement d'un liquide corporel. Un élément chauffant raccordé de manière externe au tube d'écoulement est conçu pour dissiper la chaleur à une vitesse prédéfinie pendant une durée prédéfinie. Un capteur de température raccordé de manière externe à l'élément chauffant est conçu pour mesurer une augmentation de température de l'élément chauffant pendant la durée prédéfinie.
