JPS6437945A - Ultrasonic treatment apparatus - Google Patents

Abstract

PURPOSE:To certainly and well perform the treatment of a calculus or tissue, by providing a treatment part to the leading end part of a vibration transmitting member and vibrating said treatment part in a direction other than the before- and-behind direction along the axial direction of said vibration transmitting member. CONSTITUTION:The base ends of a plurality of vibration transmitting members 8a, 8b, 8c are connected to the leading end of a horn 4 and said vibration transmitting members are formed from materials different in Young's modulus, for example, so as to be vibrated at different amplitudes by the vibration transmitted from the horn 4 and a crushing tool 9 forming a treatment part is fixedly mounted to the leading ends thereof. Therefore, when voltage is applied to the piezoelectric elements 2 of an ultrasonic vibrator 1 through the electrodes 3 thereof, the crushing tool 9 is vibrated in such a state that the blade part 11 thereof revolves in the before-and-behind direction as shown by an arrow and, therefore, the treatment such as the destruction or emulsification of a region 12 to be treated incapable of being well performed only by the vibration in the axial direction can be performed certainly and well.