Rapid Pulse electrohydraulic (EH) shockwave generator apparatus with improved acoustic wavefronts

An apparatus for generating therapeutic acoustic waves, comprising:

• a housing defining a chamber and a shockwave outlet, the chamber configured to receive a liquid;
• a plurality of electrodes configured to be disposed in the chamber, the plurality of electrodes comprising a first electrode and a second electrode, the first electrode and the second electrode define a spark gap;
• a free-form acoustic reflector disposed in the chamber, wherein the free-form acoustic reflector is non-parabolic and defines a focal location;
• a servomotor comprising an output shaft that is mechanically coupled to a primary electrode carrier and a secondary electrode carrier, the primary electrode carrier being coupled to the first electrode and the secondary electrode carrier being coupled to the second electrode, the mechanical coupling of the output shaft to the primary electrode carrier and the secondary electrode carrier enabling movement of the output shaft in a first direction to cause simultaneous linear translation of the primary electrode carrier and the secondary electrode carrier to maintain a size of the spark gap;
• and
• a controller configured to actuate the servomotor to maintain the size of the spark gap and to keep the spark gap positioned at the focal location of the reflector based on erosion of the first electrode and the second electrode.