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    Ablation system and method having multiple-sensor electrodes to assist in assessment of electrode and sensor position and adjustment of energy levels
    8.
    发明授权
    Ablation system and method having multiple-sensor electrodes to assist in assessment of electrode and sensor position and adjustment of energy levels 有权
    消融系统和方法具有多个传感器电极，以帮助评估电极和传感器位置以及调节能级

    公开(公告)号：US06752804B2

    公开(公告)日：2004-06-22

    申请号：US09752782

    申请日：2000-12-28

    申请人： John A. Simpson ,  Marshall L. Sherman ,  David S. Wood ,  Jeffrey A. Hall

    发明人： John A. Simpson ,  Marshall L. Sherman ,  David S. Wood ,  Jeffrey A. Hall

    IPC分类号： A61B1804

    CPC分类号： A61B18/1492 ,  A61B2017/00101 ,  A61B2018/0016 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00797

    摘要： A catheter carries a plurality of electrodes, each with multiple thermal sensors attached and is used to position the electrodes proximal biological tissue. A processor responsive to each of the thermal sensors determines the temperature at the thermal-sensor/electrode junction. A display provides a graphic representation of the temperatures of the thermal-sensor/electrode junctions. An exemplary representation is a bar graph having the temperature of one thermal sensor at one end and the temperature of another thermal sensor at the other end. The length of the bar graph combined with the position of the bar graph relative to a temperature range region provides an indication of the position of the thermal-sensor/electrode junctions relative to the biological tissue. The processor also monitors the spread between the sensor temperatures and compares it to a threshold value. Base on the result of the comparison, the processor controls the power applied to the electrode.

    摘要翻译： 导管携带多个电极，每个具有多个热传感器，并且用于将电极定位在生物组织的近端。 响应于每个热传感器的处理器确定热传感器/电极结处的温度。 显示器提供热传感器/电极接头的温度的图示。 示例性表示是具有一端的一个热传感器的温度和另一端的另一个热传感器的温度的条形图。 条形图的长度与条形图相对于温度范围区域的位置相结合提供热传感器/电极接头相对于生物组织的位置的指示。 处理器还监控传感器温度之间的差异，并将其与阈值进行比较。 基于比较的结果，处理器控制施加到电极的电力。

    RF ablation apparatus and method having high output impedance drivers
    9.
    发明授权
    RF ablation apparatus and method having high output impedance drivers 失效
    RF消融装置和方法具有高输出阻抗驱动器

    公开(公告)号：US06171305B2

    公开(公告)日：2001-01-09

    申请号：US09073112

    申请日：1998-05-05

    申请人： Marshall L. Sherman

    发明人： Marshall L. Sherman

    IPC分类号： A61B1804

    CPC分类号： A61B18/1492 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00654 ,  A61B2018/00726 ,  A61B2018/00738 ,  A61B2018/0075 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/124 ,  A61B2018/1467

    摘要： An apparatus for delivering energy to a biological site includes a catheter having a plurality of electrodes positioned proximal the biological site. A power control system supplies power to each electrode. Where an electrode or group of electrodes is turned off, the power control system provides a high impedance to the turned off electrodes so that substantially no current flows to those electrodes from other electrodes that may remain on. This permits the electrodes turned off to cool. The power control system may permit control over the phase and duty cycle of the power applied to the electrodes and may permit individual control over the power provided to each electrode. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrodes and the backplate. Where a unipolar/bipolar approach is used with the backplate, the power control system controls the phase angle of the power applied to the electrodes so that the current flows between the electrodes and between the electrodes and the backplate.

    摘要翻译： 用于向生物部位输送能量的装置包括具有位于生物部位附近的多个电极的导管。 电源控制系统为每个电极供电。 在电极或电极组关闭的情况下，功率控制系统向关闭电极提供高阻抗，使得基本上没有电流从可能保持在其上的其它电极流到这些电极。 这允许电极关闭冷却。 功率控制系统可以允许控制施加到电极的功率的相位和占空比，并且可以允许单独控制提供给每个电极的功率。 背板也位于生物部位的近侧，使得生物部位介于电极和背板之间。 在与背板一起使用单极/双极方法的情况下，功率控制系统控制施加到电极的功率的相位角，使得电流在电极之间以及电极和背板之间流动。

    Catheter having common lead for electrode and sensor
    10.
    发明授权
    Catheter having common lead for electrode and sensor 失效
    导管具有电极和传感器的共同引线

    公开(公告)号：US6049737A

    公开(公告)日：2000-04-11

    申请号：US72800

    申请日：1998-05-05

    申请人： John A. Simpson ,  Marshall L. Sherman

    发明人： John A. Simpson ,  Marshall L. Sherman

    IPC分类号： A61N1/04 ,  A61B18/12 ,  A61B18/14 ,  A61B5/00

    CPC分类号： A61B18/1492

    摘要： An apparatus for delivering energy to a biological site includes a catheter having a plurality of electrodes arranged in a linear array, the electrodes positioned proximal the biological site. A power control system supplies power, each having a controllable duty cycle and phase angle, to each of the electrodes. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrode device and the backplate. The backplate is maintained at the reference voltage level in relation to the power. The power control system controls the phase angle of each power signal so that current flows between the electrodes and between the electrodes and the backplate results. Temperature sensors are located at the electrodes and each shares a common lead with the power circuitry. The temperature sensor signal is received by the power control system during the off-period of the duty cycle of the particular electrode.

    摘要翻译： 用于向生物部位输送能量的装置包括具有以线性阵列排列的多个电极的导管，电极位于生物部位的近侧。 功率控制系统向每个电极供电，每个功率具有可控的占空比和相位角。 背板也位于生物部位的近侧，使得生物部位介于电极装置和背板之间。 背板相对于电源维持在参考电压电平。 功率控制系统控制每个功率信号的相位角，使得电流在电极之间以及电极之间流动并产生背板结果。 温度传感器位于电极处，并且每个共享引线与电源电路。 在特定电极的占空比的关闭周期期间，功率控制系统接收温度传感器信号。