Lithotripsy device, in particular intracorporeal lithotripsy device, for breaking up calculi, impact element, retrofitting set for retrofitting an existing lithotripsy device, and method for operating a lithotripsy device

A retrofit kit for retrofitting an existing lithotripsy device, wherein the existing lithotripsy device comprises a sonotrode and/or a horn, the retrofit kit comprising:

• at least one striking body with one excitation surface or a plurality of excitation surfaces;
• and
• at least one impact body connected to a clampable elastic element at an impact body end or a plurality of impact bodies in each case connected to a clampable elastic element at one end of the respective impact body, and wherein the striking body comprises at least one adapter for mechanical connection to the sonotrode and/or the horn, to form a lithotripsy device comprising a carrier unit;
• the sonotrode that is connectable to the carrier unit on the distal side and has a longitudinal center axis;
• and the at least one impact body for mechanical impact excitation of the sonotrode, wherein the at least one impact body has a longitudinal direction, a proximal end, and a distal end, wherein the distal end is connected at the proximal end or at the distal end to the clamped elastic element, so that the at least one impact body has a free end, and the lithotripsy device has a vibration excitation device for vibration excitation of the sonotrode and of the at least one impact body, and the free end of the at least one impact body is directed towards a first excitation surface and is configured to be pressed against the first excitation surface by means of the clamped elastic element upon vibration excitation, wherein the excitation surface is connected directly or indirectly to the sonotrode, wherein the at least one impact body is arranged with its longitudinal direction in a direction deviating from the longitudinal center axis of the sonotrode and deviating from a transverse axis of the sonotrode, so that a radial vibration of the sonotrode can be excited by an oblique strike of the at least one impact body with its free end onto the first excitation surface.

A method for operating a lithotripsy device, wherein the lithotripsy device comprises:

• a sonotrode;
• at least one impact body for mechanical impact excitation of the sonotrode, at least one excitation surface;
• and a vibration excitation device for vibration excitation of the sonotrode and of the at least one impact body, wherein the at least one impact body is connected with its one end to a clamped elastic element and is directed with its free end towards the first excitation surface, and the at least one impact body is arranged with its longitudinal direction deviating from a longitudinal center axis of the sonotrode and deviating from a transverse axis of the sonotrode, the method comprising the steps of:
• exciting a first vibration, in particular a longitudinal vibration, of the sonotrode by means of the vibration excitation device,
• exciting a vibration of the at least one impact body by means of the vibration excitation device and movement of the free end of the at least one impact body against the first excitation surface by means of the elastic element, and
• exciting a radial vibration of the sonotrode by striking the free end of the at least one impact body against the first excitation surface.