尿路結石および石コウ等カルシウム塩の化学溶解に及ぼす超音波の影響

概要

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The experiment reported here was designed to find the cause for dissolving the urinary stones rapidly in EDTA sokution by relatively low power ultrasonic irradiation without direct disintegration of the stone and systemic effect of heating. In this experiment it has become clear that the irradiation with ultrasonic wave accelerated the dissolution of stones. The quantitative experimental studies using spherically shaped gypsum as model sample, moreover, have revealed that the ultrasonic irradiation increased the chemical dissokution rates of the model stone by 10 to 30 times. It may be probable that the increase in dissolution rate is ascribed to the following facts; the effects due to the microstream generated by the vibration of bubble associated with the ultrasonic irradiation and the effects due to the dance of the stone in EDTA solution by an intermittent straight flow generated by the ultrasonic wave pulse.
社団法人日本音響学会の論文