This ultrasound detection device comprises a probe, a transmission/reception unit, a first wire, and a second wire. The transmission/reception unit applies a reference potential to the probe via the first wire and transmits and receives signals to and from the probe via the second wire. The probe comprises first and second oscillators and an amplifier circuit. The first oscillator sends ultrasonic waves. The second oscillator has a first electrode connected to the first wire and receives ultrasonic waves and converts the ultrasonic waves into electric signals. The amplifier circuit comprises first and second transistors, first and second resistances, and a capacitance. The first transistor comprises a third electrode connected to the first wire, a fourth electrode which is a gate or base connected to the second electrode of the second oscillator, and a fifth electrode which is connected to the fourth electrode via the resistance and is connected to the second wire via the first resistance, and the first transistor is source-grounded or emitter-grounded. The second transistor comprises an electrode connected to the first wire, an electrode which is a gate or base connected to the fifth electrode, and an electrode connected to the second wire via the second resistance and connected to the second wire via the capacitance.L'invention concerne un dispositif de détection ultrasonore comprenant une sonde, une unité d'émission/réception, un premier fil et un second fil. L'unité d'émission/réception applique un potentiel de référence à la sonde par l'intermédiaire du premier fil et transmet et reçoit des signaux vers et depuis la sonde par l'intermédiaire du second fil. La sonde comprend des premier et second oscillateurs et un circuit amplificateur. Le premier oscillateur envoie des ondes ultrasonores. Le second oscillateur a une première électrode connectée au premier fil et reçoit des ondes ultrasonores et convertit les ondes ultrasonores en signaux électriques. Le circui
