Microcavitation system, device, and ultrasonic probe assembly for generating directional microcavitation

An ultrasonic microcavitation device, comprising:

• a handle containing an ultrasonic transducer;
• an ultrasonic transmission member having a first end portion and a second end spaced apart from the first end portion, wherein the first end portion of the ultrasonic transmission member is connected to the ultrasonic transducer;
• a cannula connected to the handle, the cannula having a tubular side wall, a cannula lumen, an annular protrusion, a fluid input port, a proximal end, a distal end, and a distal end portion;
• a fluid source;
• and
• a fluid conduit coupling the fluid input port to the fluid source such that the fluid input port is configured to receive a flow of liquid from the fluid source,
• wherein:
• the ultrasonic transmission member is located in the cannula lumen;
• the fluid input port of the cannula is connected in fluid communication with the cannula lumen;
• the distal end portion of the cannula is configured to define a cavitation generation chamber that distally terminates at the distal end of the cannula, the cavitation generation chamber having a distal end wall comprising a sieve defining a plurality of apertures configured to eject fluid jetting streams along a longitudinal direction of the cannula, wherein each aperture of the plurality of apertures has an aperture axis that is parallel to a longitudinal axis of the cannula;
• the second end of the ultrasonic transmission member distally terminates at a location proximal to the cavitation generation chamber;
• and
• the annular protrusion extends inwardly from the tubular side wall into the cannula lumen and is configured to define:
• a termination end of the cannula lumen;
• and
• an aft end of the cavitation generation chamber.

A microcavitation system, comprising:

• a console having an ultrasonic signal generator and a fluid source;
• a handle containing an ultrasonic transducer, wherein the ultrasonic transducer is electrically connected to the ultrasonic signal generator;
• an ultrasonic transmission member having a first end portion and a second end spaced apart from the first end portion, wherein the first end portion of the ultrasonic transmission member is mechanically connected to the ultrasonic transducer;
• and
• a cannula connected to the handle, the cannula having a tubular side wall, a cannula lumen, an annular protrusion, a fluid input port, a proximal end, a distal end, and a distal end portion that is configured to define a cavitation generation chamber that distally terminates at the distal end,
• wherein:
• the ultrasonic transmission member is located in the cannula lumen;
• the fluid input port of the cannula is connected in fluid communication with the fluid source to receive a flow of a fluid from the fluid source;
• the fluid input port of the cannula is connected in fluid communication with the cannula lumen, wherein the fluid is supplied through the cannula lumen to the cavitation generation chamber;
• the cavitation generation chamber of the cannula has a distal end wall comprising a sieve defining a plurality of apertures configured to eject fluid jetting streams along a longitudinal direction of the cannula, wherein each aperture of the plurality of apertures has an aperture axis that is parallel to a longitudinal axis of the cannula;
• the second end of the ultrasonic transmission member distally terminates at a location proximal to the cavitation generation chamber;
• and
• the annular protrusion extends inwardly from the tubular side wall into the cannula lumen and is configured to define:
• a termination end of the cannula lumen;
• and
• an aft end of the cavitation generation chamber.