SOME THEORETICAL CONSIDERATIONS ABOUT POSSIBILITY OF LIMITATION OF ESWL PROCEDURE INJURES

The underlying principle of ESWL is the creation of a shock wave by an energy source which is targeted using a focusing device, and the energy is then conveyed from outside to inside the body via a coupling mechanism, usually a fluid medium. The number of shock waves and treatments needed for breakage of stones depends upon their size and hardness. Numerous experimental investigations confirm that the physics of the secondary destructive mechanism is directly related to the wide spectrum of phenomena studied within the frame work of medical applications of shock-wave and ultrasonic diagnostics for special aims. Micro bubbles and cavitation clusters, their interaction with shock waves (SW) and SW generation, micro bubble pulsations and cumulative micro jets play both the positive a kidney stone disintegration by ESWL (SW) and undesirable (destruction of tissues and cells) roles in the processes of damage, destroying and treatment. The effect of rarefaction phases of ESWL shock waves as well as its focusing on the target as one of elements of the mechanism of kidney stone destruction will be discussed. And as the preface the short survey of some biomedical problems will be presented to show the important role of SW and bubble clusters in their solution.