Vibrolith is an electro-pneumatic lithotripter. It works under the principle of a bullet, accelerated by a compressed air with a steel probe. This probe transmits the impact energy to calculi. By this electro-pneumatic ballistic energy only the calculi is disintegrated, there is no effect on tissue. Since only compressed air pulses in the source of impact effect, no heat is exposed. Therefore, there is neither risk of any thermal injury on tissue nor destruction on optics of endoscopy. There is no electrically driven operation except the control box. With this feature any electrical hazard on either operator or patient prevented by means of electrical isolation of whole system.