The invention concerns an apparatus for medical screening and diagnosis by dual detection of stethoscopic and Doppler signals, comprising a sound-transmitting linking conduit (3, 33) connected, at one end, to a housing (100) which at least partially forms an ear trumpet (1, 1) provided with a membrane (2), and, at the other end, to at least one earpiece (4) for listening to a stethoscopic signals coming from the ear trumpet, characterized in that the housing (100) is coupled to at least one ultrasound probe (8) designed to permit convergence of reception of the ultrasonic and stethoscopic signals to provide simultaneously a dual detection, and connected to a transducer processing circuit (37) capable of supplying, from a Doppler signal, an audio signal, by coupling the processing circuit (37) to a loudspeaker (34) in contact with the ear trumpet (1, 1) for stethoscopic-type listening, and a video signal, by coupling the processing circuit (37) to viewing means (31, 32, 39) for providing visual information.
