Extracorporeal Shockwave Therapy (ESWT) is a non-invasive method and is widely used for various musculoskeletal diseases as well as in urology. There are 3 mechanisms for generating shock waves: electrohydraulic, electromagnetic, and piezoelectric.

Electrohydraulic devices generate shock waves through a discharge in a fluid medium due to the high voltage applied to the tips of the electrodes. This shock wave is focused with the help of a reflector. 

Electromagnetic shock wave devices operate on the principle of inducing a magnetic field and the shock wave is focused using acoustic lenses