- External ultrasound generating treating device to induce spinal cord treatment by emission of ultrasound waves, wherein the ultrasound generating treating device is suitable for external positioning against the back of a patient, said device comprising an array of several ultrasound generating treatment transducers (20iL, 20iR) distributed along a longitudinal direction and a lateral direction, wherein the external ultrasound generating device comprises at least two sub-arrays of ultrasound generating treatment transducers, a left sub-array being located on a left lateral side of a central longitudinal axis (Ai) and a right sub-array being located on a right lateral side of the central longitudinal axis ( Ai), laterally opposite to the left side, wherein, the device comprises a support structure having at least one module comprising a left lateral section holding at least a first left set of treatment transducers of the left sub-array, and a right lateral section holding at least a first right set of treatment transducers of the right sub-array, and in that the support structure maintains, in use of the device, a constant distance and a constant relative angular orientation around a longitudinal axis (Ai) between the first left and first right set of treatment transducers (20iL, 20iR); characterized: - in that the support structure comprises an adjusting mechanism for adjusting, around a longitudinal axis ( Ai), a relative angular orientation between the left and right lateral sections (34iL, 34iR) of the support structure, so as to adjust the relative angular orientation around the longitudinal axis between the first left and first right set of treatment transducers (20iL, 20iR); - in that the adjusting mechanism comprises an articulation; - in that the adjusting mechanism provides for adjusting a distance between the left and right lateral sections of the support structure (34iL, 34iR), so as to adjust the distance between the first left and first right set of treatment transducers (20iL, 20iR); - in that the adjusting mechanism comprises a lock for maintaining, in use of the device, the constant distance and the constant relative angular orientation around the central longitudinal axis between the first left and first right set of treatment transducers (20iL, 20iR); and - in that the left and right lateral sections (34iL, 34iR) have ultrasonic imaging transducers (42iL, 42iR) for forming respectively a left and a right image of an emission zone of the set of treatment transducers (20iL, 20iR) held on the same section (34iL, 34iR). - in that the support structure comprises an adjusting mechanism for adjusting, around a longitudinal axis ( Ai), a relative angular orientation between the left and right lateral sections (34iL, 34iR) of the support structure, so as to adjust the relative angular orientation around the longitudinal axis between the first left and first right set of treatment transducers (20iL, 20iR); - in that the adjusting mechanism comprises an articulation; - in that the adjusting mechanism provides for adjusting a distance between the left and right lateral sections of the support structure (34iL, 34iR), so as to adjust the distance between the first left and first right set of treatment transducers (20iL, 20iR); - in that the adjusting mechanism comprises a lock for maintaining, in use of the device, the constant distance and the constant relative angular orientation around the central longitudinal axis between the first left and first right set of treatment transducers (20iL, 20iR); and - in that the left and right lateral sections (34iL, 34iR) have ultrasonic imaging transducers (42iL, 42iR) for forming respectively a left and a right image of an emission zone of the set of treatment transducers (20iL, 20iR) held on the same section (34iL, 34iR).