The invention relates to a remote-controlled ultrasound device comprising an enclosure envelope (20) containing a tight compartment (32) and a control compartment (34) that are tightly separated by a transverse partition (30). Sensor means (16) are designed so as to move in the tight compartment, submerged in an ultrasonic-wave-propagating medium, and driving means (18) are arranged in the control compartment for triggering the movement of a support rod (36) at the end of which are mounted the sensor means. The support rod extends through the partition in order to connect the driving means and the sensor means, being mounted in a freely rotational manner inside a tube (44) passing through said partition. The invention is especially applicable to remote ultrasound operations in the medical field.