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    • 4. 发明授权
    • Probe shape detection apparatus and probe shape detection method
    • 探头形状检测装置和探头形状检测方法
    • US08597177B2
    • 2013-12-03
    • US13596498
    • 2012-08-28
    • Daisuke SanoHirotaka AkibaHiroyuki UshifusaKyoko HiyamaTomohiko Oda
    • Daisuke SanoHirotaka AkibaHiroyuki UshifusaKyoko HiyamaTomohiko Oda
    • A61B1/00
    • A61B1/00158A61B1/05A61B5/062G02B23/2476
    • A probe shape detection apparatus includes a magnetic field sensing section for sensing a magnetic field generated by an electromagnetic coil in a flexible probe, a movement speed calculation section for calculating a movement speed of the coil, a coordinate computation section for calculating three-dimensional coordinates of the coil based on the sensed magnetic field, a moving average coordinate calculation section for calculating moving average coordinates of the coil, a comparison section for comparing the calculated movement speed with a predetermined threshold, a coil coordinate setting section for setting one of the moving average coordinates and the three-dimensional coordinates calculated by the coordinate computation section as the three-dimensional coordinates of the coil, based on a comparison result of the calculated moving speed, and a signal processing section for generating a video signal to display a shape of the probe, based on the set three-dimensional coordinates of the coil.
    • 探头形状检测装置包括用于感测由柔性探针中的电磁线圈产生的磁场的磁场检测部,用于计算线圈的移动速度的移动速度计算部,用于计算三维坐标的坐标计算部 基于感测到的磁场的线圈的移动平均坐标计算部,用于计算线圈的移动平均坐标的移动平均坐标计算部,用于将计算出的移动速度与预定阈值进行比较的比较部,线圈坐标设定部, 基于计算出的移动速度的比较结果,由坐标运算部算出的平均坐标和三维坐标作为线圈的三维坐标,以及用于产生视频信号以显示形状的信号处理部分 探头,基于设定的三维坐标 线圈。
    • 9. 发明授权
    • Probe shape detection apparatus and probe shape detection method
    • 探头形状检测装置和探头形状检测方法
    • US08566052B2
    • 2013-10-22
    • US13596524
    • 2012-08-28
    • Hiroyuki Ushifusa
    • Hiroyuki Ushifusa
    • G01R25/00G01R27/00G01C9/00G01C17/00G01C19/00A61B5/05
    • A61B1/00071A61B1/00158A61B5/064A61B34/20A61B2034/2051A61B2090/306A61B2090/3616
    • A probe shape detection apparatus includes first and second magnetic field detection sections that outputs a signal in accordance with an electromotive voltage group generated when the magnetic field emitted from a magnetic field generation element provided in a longitudinal direction of a probe is detected, a candidate vector calculation section that calculates a candidate vector based on the electromotive voltage group generated in the first magnetic field detection section and one piece of candidate position information, an estimated electromotive voltage calculation section that calculates an estimated electromotive voltage based on the one piece of candidate position information and the candidate vector and an estimated position acquiring section that acquires a candidate position that minimizes an error between the electromotive voltage group generated in the second magnetic field detection section and the estimated electromotive voltage as an estimated position of the magnetic field generation element.
    • 探头形状检测装置包括:第一和第二磁场检测部,其根据检测到从探测器纵向设置的磁场产生元件发出的磁场时产生的电动势电压组输出信号;候选矢量 计算部分,其基于在第一磁场检测部分中产生的电动势电压组和一条候选位置信息计算候选矢量;估计电动势电压计算部分,其基于一条候选位置信息计算估计的电动势电压 候选矢量和估计位置获取部分,其获取将在第二磁场检测部分中产生的电动势电压组与估计的电动势之间的误差最小化的候选位置作为磁f的估计位置 我的一代元素。