Multiple sensor, temperature controlled R-F ablation system
    7.
    发明授权
    Multiple sensor, temperature controlled R-F ablation system 失效
    多传感器,温度控制R-F消融系统

    公开(公告)号:US5957961A

    公开(公告)日:1999-09-28

    申请号:US5405

    申请日:1998-01-09

    摘要: A catheter ablation system including a catheter having a distal segment carrying at least one electrode extending along the segment and having a number of temperature sensors arranged along the distal segment adjacent the electrode, each providing an output indicative of temperature. The catheter is coupled to a power source which provides R-F energy to the electrode and with temperature processing circuitry coupled to the temperature sensors and the power source which controls power output from the power source as a function of the outputs of the temperature sensors. In a preferred embodiment, the temperature processing circuitry includes circuitry for comparing the temperature indicated by the temperature sensors to a known reference sensor and circuitry for disabling subsequent use of an output of one of the sensors if the output from the sensor differs from the referenced temperature by more than a defined value. In an alternative preferred embodiment, the temperature processing circuitry includes circuitry responsive to the rate of change of the output of the temperature sensors and circuitry for disabling a sensor if the output of the sensor changes at a rate greater than a defined referenced rate of change.

    摘要翻译: 一种导管消融系统,其包括具有远端段的导管,所述远端段承载沿着所述段延伸的至少一个电极,并且具有沿着与所述电极相邻的远侧段布置的多个温度传感器,每个提供指示温度的输出。 导管耦合到电源,该电源为电极提供R-F能量,并且具有耦合到温度传感器的温度处理电路和控制从电源输出的功率作为温度传感器输出的功能的电源。 在优选实施例中,温度处理电路包括用于将由温度传感器指示的温度与已知参考传感器和用于如果传感器的输出与参考温度不同的随后使用传感器之一的输出的电路进行比较的电路 超过定义的值。 在替代的优选实施例中,温度处理电路包括响应于温度传感器的输出的变化速率和用于在传感器的输出以大于所定义的参考变化率的速率变化的情况下禁用传感器的电路的电路。