Ultrasound energy for biomedicine

Abstract

For removing tissues and fragmenting stones, removing clots from blood vessels and other undesirable derivatives which can occur in a person’s body, it is possible to use the ultrasound energy. Usually the energy generated to the environment by the waveguide is transmitted in the form of intensive acoustic waves of high frequency; tissues are destroyed under their influence, under the direct mechanical effect, or because of the phenomenon of cavitation. Within cavitation, in the liquid effect by the ultrasound frequency of big power, microscopic bubbles filled by vapours or cavities occur which expand fast and explode. These explosions are accompanied by intensive local hydraulic impacts which cause destruction of tissues.