A microfluidic device for detecting a flow parameter, comprises a channel 104 configured within a base body 102, said channel 104 comprising a first inlet 106 for feeding a first fluid Fl and a second inlet 108 for feeding a second fluid F2 so as to form a fluid stream F1-2 having the first and second fluids F1, F2 within the channel 104, and further comprising an output 112 for providing the fluid stream F1-2 on the output side, and said channel 104 having a cross-sectional dimensioning for configuring within the channel 104, between a section of the channel 104 that is filled with the first fluid Fl and an adjacent section of the channel that is filled with the second fluid F2, a fluid interface between the first and second fluids F1, F2 that extends over the channel cross-section, a first feed means 114 comprising a micropump associated with the first inlet 106 for selectively feeding the first fluid F1 to the channel 104, a second feed means 116 associated with the second inlet 108 for feeding the second fluid F2 to the channel 104 and a detection means 118 for detecting, on the basis of a different physical property of the first fluid and the second fluid within the channel, a measurement value SMEASURE dependent on a current flow parameter of the first or second fluid.Dispositif microfluidique pour détecter un paramètre découlement, comprenant un canal (104) qui se trouve dans un corps de base (102), ledit canal (104) comprenant une première admission (106) pour charger un premier fluide F1 et une seconde admission (108) pour charger un second fluide F2 de manière à former un flux de fluides F1-2 contenant les premier et second fluides F1, F2 dans le canal (104), et comprenant, en outre, une évacuation (112) pour acheminer le flux de fluides F1-2 côté sortie. Le canal (104) présente un dimensionnement en coupe transversale permettant de configurer à lintérieur du canal (104), entre une section du canal (104) qui est remplie avec le premier fluide F1 et une sec
