Combination monophasic action potential/ablation catheter and
high-performance filter system
    152.
    发明授权
    Combination monophasic action potential/ablation catheter and high-performance filter system 失效
    组合单相动作电位/消融导管和高性能过滤系统

    公开(公告)号:US5398683A

    公开(公告)日:1995-03-21

    申请号:US92762

    申请日:1993-07-16

    Abstract: A combination catheter for both detecting monophasic action potentials and ablating surface tissue in an in vivo heart of a patient is provided. The apparatus includes a catheter probe having a terminal tip portion and an electrode carried on the tip such that a portion of the tip electrode is exposed to ambient. A reference electrode is spaced along the tip from the first electrode for supplying a reference potential signal. An ablating electrode is located adjacent to but electrically insulated from both the tip and reference electrodes for providing electromagnetic energy to the tip. The electrodes are electrically connected to the proximal end of the catheter through individual conductors or wires that run through an insulated cable. An electronic filter is provided to permit the recording of MAPs during ablation without radiofrequency interference. The catheter may also include standard mapping and/or pacing electrodes. The catheter may further include a steering mechanism for positioning the catheter at various treatment sites in the heart, and a structure for holding the tip electrode in substantially perpendicular contact with heart tissue with a positive pressure, and for spacing the reference electrode from the heart tissue.

    Abstract translation: 提供了用于检测患者的体内心脏中的单相动作电位和消融表面组织的组合导管。 该装置包括导管探针,其具有端子末端部分和在尖端上承载的电极,使得尖端电极的一部分暴露于环境中。 参考电极沿着尖端与第一电极间隔开,以提供参考电位信号。 烧蚀电极位于与尖端和参考电极相邻但电绝缘的位置,用于向尖端提供电磁能。 电极通过穿过绝缘电缆的各个导体或电线电连接到导管的近端。 提供电子滤波器以允许在消融期间MAP的记录而没有射频干扰。 导管还可以包括标准贴图和/或起搏电极。 导管还可以包括用于将导管定位在心脏中的各种治疗部位的转向机构,以及用于将尖端电极与正常压力基本上垂直接触心脏组织并将参考电极与心脏组织间隔开的结构 。

    Method of making durable sleeve for enclosing a bendable electrode tip
assembly
    156.
    发明授权
    Method of making durable sleeve for enclosing a bendable electrode tip assembly 失效
    制造用于封闭可弯曲电极末端组件的耐用套筒的方法

    公开(公告)号:US5257451A

    公开(公告)日:1993-11-02

    申请号:US790206

    申请日:1991-11-08

    Abstract: A reinforcing sleeve encloses a bendable electrode tip assembly for a catheter. The reinforcing sleeve is flexible enough to accommodate the bending movement desired for the electrode tip assembly. Still, the reinforcing sleeve provides added strength and resistance against wear and tear during repeated bending operations. The reinforcing sleeve also holds associated steering wires and electrical conducting wires in close intimate contact against the interior support wire of the electrode tip assembly. The intimate contact prevents kinking and chafing of the steering wires and electrical conducting wires during bending operations.

    Abstract translation: 加强套管包围用于导管的可弯曲电极末端组件。 加强套筒足够柔韧以适应电极头组件所需的弯曲运动。 仍然,加强套筒在反复弯曲操作期间提供附加的强度和抵抗磨损和抗撕裂的能力。 加强套筒还保持相关联的操纵线和电导线与电极头组件的内部支撑线紧密接触。 紧密接触可防止弯曲操作期间转向导线和导电线的扭结和擦伤。

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