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    Polyphase electrosurgical system
    1.
    发明授权
    Polyphase electrosurgical system 有权

    公开(公告)号：EP2149342B1

    公开(公告)日：2018-10-24

    申请号：EP09009860.9

    申请日：2009-07-30

    申请人： Covidien LP

    发明人： Paulus, Joseph A.

    IPC分类号： A61B18/12 ,  A61B18/00 ,  A61B18/14

    CPC分类号： A61B18/1206 ,  A61B2018/00654 ,  A61B2018/00684 ,  A61B2018/00732 ,  A61B2018/0075 ,  A61B2018/00875 ,  A61B2018/128 ,  A61B2018/143

    摘要： A polyphase electrosurgical system and method are provided. In embodiments, a radiofrequency generator having the capability of delivering a plurality of independent electrosurgical signals is disclosed. An electrosurgical instrument having an array of electrodes that correspond to the plurality of signals may be used to deliver the electrosurgical signals to tissue. In embodiments, three RF signals having a phase offset of about 120° therebetween, i.e., a three-phase configuration, may be used to achieve a balanced delivery of electrosurgical energy, which may lead to increased rates of energy delivery, improved control of tissue ablation regions, and improved operative outcomes. The phase, amplitude, and/or frequency of each signal may be independently variable in response to user inputs and/or biological parameters such as tissue impedance or return electrode current.

    Systems and methods for measuring the frequency of signals generated by high frequency medical devices
    10.
    发明公开
    Systems and methods for measuring the frequency of signals generated by high frequency medical devices 审中-公开
    通过高频的医疗设备的信号产生用于测量频率的系统和方法

    公开(公告)号：EP2680016A2

    公开(公告)日：2014-01-01

    申请号：EP13174295.9

    申请日：2013-06-28

    申请人： Covidien LP

    发明人： Moul, Wayne L. ,  Behnke, Robert J. ,  Frushour, Scott E.M. ,  Jensen, Jeffrey L.

    IPC分类号： G01R23/00 ,  G01R25/00

    CPC分类号： G01R23/02 ,  A61B18/1206 ,  A61B18/1815 ,  A61B2018/00642 ,  A61B2018/00773 ,  A61B2018/128 ,  A61B2018/1823 ,  G01R23/00 ,  G01R23/145 ,  G01R25/00 ,  G01R25/02

    摘要： Systems and corresponding methods for determining characteristics of an output signal generated by a high-frequency medical device using low-frequency measurement systems are disclosed. A digital measurement system includes an oscillator, a mixer, and a controller coupled to each other. The oscillator provides a reference signal having a second frequency. The mixer generates a down-converted signal based on the output signal and the reference signal. The controller then determines a characteristic of the output signal (e.g., frequency or phase) based on the down-converted signal. An analog measurement system includes a filter having a center frequency, a rectifier, and a controller. The filter filters the output signal and the rectifier rectifies the filtered signal. The controller samples the rectified signal and determines a characteristic of the output signal based on the level of the rectified signal. The reference signal controller may adjust a characteristic of the output signal based on the determined frequency and/or phase of the output signal.

    摘要翻译： 用于使用低频测量系统通过一个高频的医疗装置产生的输出信号的确定性对应采矿特性的系统和方法是游离缺失盘。 一种数字测量系统包括在振荡器，混频器和耦合到海誓山盟的控制器。 振荡器提供具有第二频率的参考信号。 混合器基因率基于所述输出信号和所述基准信号的下变频信号。 然后bestimmt输出信号基于所述下变频信号（E. G.，频率或相位）的特性的控制器。 模拟测量系统包括具有中心频率，整流器和控制器的过滤器。 所述滤波器滤波的输出信号和所述整流器整流滤波后的信号。 控制器样品整流信号和bestimmt基于整流信号的电平的输出信号的特性。 基准信号控制器可以调节基于所述输出信号的确定性开采频率和/或相位的输出信号的特性。