Ultrasonic probe suitable for acoustic coupling via a water channel

An ultrasonic probe for acoustic coupling through a water lead section, comprising:

• a main part formed with a water tight enclosure for housing an ultrasonic crystal having a diameter, the enclosure having at least one side wall and a lower surface;
• a protective layer connected to the ultrasonic crystal, the protective layer being flush with the lower surface of the enclosure;
• a water channel positioned adjacent to the ultrasonic crystal, the water channel having an inlet with a hose connection and an outlet which opens out on the lower surface of the enclosure;
• a positive locking coupling facility located on the side wall immediately adjoining the lower surface of the enclosure;
• and,
• a nozzle part for water-jet acoustic coupling, the nozzle part:
• having an inlet end with a matching positive-locking coupling facility and a free end, the inlet end of the nozzle part being coupled to the lower surface of the enclosure by the positive locking coupling facility and the matching positive-locking coupling facility, the nozzle being formed with a conical frustum shaped nozzle channel extending between the inlet end and the free end, the channel having a diameter equal to the diameter of the ultrasonic crystal at the inlet end, the channel narrowing to the free end of the nozzle, the nozzle part being formed with a blind hole extending the outlet of the water channel, the blind hole connecting the water channel to the nozzle channel by a transverse channel, the nozzle being manufactured from a material with an acoustic impedance as close as possible to the acoustic impedance of water.