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    • 8. 发明授权
    • Apparatus for destroying a calculus
    • 用于破坏微积分的装置
    • US5358466A
    • 1994-10-25
    • US868414
    • 1992-04-15
    • Satoshi AidaKatsuhiko FujimotoKaoru SuzukiNobuyuki IwamaAkinori Ishida
    • Satoshi AidaKatsuhiko FujimotoKaoru SuzukiNobuyuki IwamaAkinori Ishida
    • A61B17/22A61B17/225G01S15/02G01S15/89A61H1/00
    • G01S15/8909A61B17/2256G01S15/025
    • An apparatus for destroying a calculus includes an ultrasonic wave generating unit capable of setting a plurality of piezo-electric devices in a drive/reception mode by phase control, a peak value detecting unit for detecting a peak value, in a predetermined time width, of an echo signal in a reception signal received by the piezo-electric devices, a first comparing unit for comparing the peak value detected by the peak value detecting unit with a first predetermined threshold value, a frequency analyzing unit for analyzing a frequency component, in the predetermined time width, of the echo signal in the reception signal, a calculating unit for calculating a predetermined characteristic value on the basis of frequency component data obtained by the frequency analyzing unit, a second comparing unit for comparing the characteristic value obtained by the calculating unit with a second predetermined threshold value, and a display unit for displaying a comparison result of the first comparing unit with a comparison result of the second comparing unit.
    • 一种用于破坏微积分的装置包括能够通过相位控制将驱动/接收模式中的多个压电装置设置的超声波发生单元,用于检测预定时间宽度的峰值的峰值检测单元 由压电装置接收的接收信号中的回波信号,用于将由峰值检测单元检测的峰值与第一预定阈值进行比较的第一比较单元,用于分析频率分量的频率分析单元, 接收信号中的回波信号的预定时间宽度;计算单元,用于基于由频率分析单元获得的频率分量数据计算预定特征值;第二比较单元,用于将由计算单元获得的特征值进行比较; 具有第二预定阈值,以及显示单元,用于显示第一比较的比较结果 具有第二比较单元的比较结果。