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    CATHETERS AND METHODS FOR PERFORMING CARDIAC DIAGNOSIS AND TREATMENT
    2.
    发明申请
    CATHETERS AND METHODS FOR PERFORMING CARDIAC DIAGNOSIS AND TREATMENT 审中-公开
    执行心脏诊断和治疗的导管和方法

    公开(公告)号：WO1994007413A1

    公开(公告)日：1994-04-14

    申请号：PCT/US1993009091

    申请日：1993-09-24

    Applicant: EP TECHNOLOGIES, INC.

    Inventor： EP TECHNOLOGIES, INC. ,  HOUSER, Russell, A. ,  EDWARDS, Stuart, D. ,  KORDIS, Thomas, F.

    IPC: A61B05/0402

    CPC classification number: A61B5/6852 ,  A61B5/0422 ,  A61B5/6853 ,  A61B5/6858 ,  A61B5/6859 ,  A61B18/1492 ,  A61B2018/0016 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00357 ,  A61B2018/00577 ,  A61B2018/00839 ,  A61B2018/0091 ,  A61B2018/1861 ,  A61B2218/002 ,  A61B2562/0209 ,  A61B2562/043 ,  A61N1/056

    Abstract: A system and method for cardiac diagnosis and treatment inserts the distal end of a catheter (18) into a heart chamber. The distal end of the catheter (18) supports at least one electrode (22). The catheter (18) has a fluid flow conduit (62) extending through it. The conduit (62) has a valve (156) that prevents fluid flow from the heart chamber into the conduit (62) in response to in vivo pressure generated during heart systole and diastole. The valve (156) permits fluid flow from the conduit (62) into the heart at a pressure above the in vivo pressure. In use, the catheter (18) locates the electrode (22) in contact with a portion of the endocardium, and fluid is conducted from an external source through the conduit (62) at a pressure above the in vivo pressure to flush the area surrounding the electrode (22).

    Abstract translation: 用于心脏诊断和治疗的系统和方法将导管（18）的远端插入心室。 导管（18）的远端支撑至少一个电极（22）。 导管（18）具有延伸通过其的流体流动导管（62）。 导管（62）具有阀（156），其响应于在心脏收缩和舒张期期间产生的体内压力而阻止流体从心室流入导管（62）。 阀（156）允许流体在高于体内压力的压力下从导管（62）流入心脏。 在使用中，导管（18）将电极（22）定位成与心内膜的一部分接触，并且流体在高于体内压力的压力下从外部源通过导管（62）传导以冲洗周围的区域 电极（22）。

    COMBINATION MONOPHASIC ACTION POTENTIAL/ABLATION CATHETER AND HIGH-PERFORMANCE FILTER SYSTEM
    4.
    发明申请
    COMBINATION MONOPHASIC ACTION POTENTIAL/ABLATION CATHETER AND HIGH-PERFORMANCE FILTER SYSTEM 审中-公开
    组合单相动作电位/吸收管和高性能过滤器系统

    公开(公告)号：WO1992021278A1

    公开(公告)日：1992-12-10

    申请号：PCT/US1992004315

    申请日：1992-05-22

    Applicant: EP TECHNOLOGIES, INC.

    Inventor： EP TECHNOLOGIES, INC. ,  EDWARDS, Stuart, D. ,  FRANZ, Michael, R. ,  THOMPSON, Russell, B. ,  STERN, Roger, A.

    IPC: A61B05/04

    CPC classification number: A61B18/1206 ,  A61B5/0422 ,  A61B18/12 ,  A61B18/1492 ,  A61B2017/00292 ,  A61B2017/003 ,  A61B2017/00473 ,  A61B2018/00107 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/0066 ,  A61B2018/00839 ,  A61B2018/1253 ,  A61B2018/126 ,  A61B2018/1495 ,  A61B2018/1497 ,  A61B2018/162 ,  A61B2562/0215 ,  A61N1/056

    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 (10) and an electrode (20) carried on the tip such that a portion of the tip electrode (20) is exposed to ambient. A reference electrode (50) is spaced along the tip from the first electrode for supplying a reference potential signal. An ablating electrode (30) is located adjacent to but electrically insulated from both the tip (20) and reference (50) 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 (22, 32 and 50) 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 (80) and (75) respectively. 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。 该装置包括导管探头，其具有端子末端部分（10）和承载在尖端上的电极（20），使得尖端电极（20）的一部分暴露于环境中。 参考电极（50）沿着尖端与第一电极间隔开，用于提供参考电位信号。 烧蚀电极（30）位于与尖端（20）和参考电极（50）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导线（22,32和50）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。 导管还可以分别包括标准贴图和/或起搏电极（80）和（75）。 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 。

    ARTICULATED SYSTEMS FOR CARDIAC ABLATION
    6.
    发明申请
    ARTICULATED SYSTEMS FOR CARDIAC ABLATION 审中-公开
    用于心脏衰竭的ARTICULATED系统

    公开(公告)号：WO1993020886A1

    公开(公告)日：1993-10-28

    申请号：PCT/US1993003399

    申请日：1993-04-12

    Applicant: EP TECHNOLOGIES, INC.

    Inventor： EP TECHNOLOGIES, INC. ,  STERN, Roger, A. ,  EDWARDS, Stuart, D. ,  JACKSON, Jerome

    IPC: A61M37/00

    CPC classification number: A61M25/0147 ,  Y10T403/32311

    Abstract: An improved assembly (10) for steering and orienting a functional element (20) at the distal end of a catheter tube (12) holds the functional element (20) with its major axis aligned with the axis of the catheter tube (12) for convenient steering to a tissue site. The mechanism can also pivot the functional element (20) in response to an external force to orient the major axis of the functional element generally parallel to the plane of the tissue site, without bending the catheter tube (12).

    Abstract translation: 用于在导管管（12）的远端处转向和定向功能元件（20）的改进的组件（10）保持功能元件（20），其主轴与导管（12）的轴线对齐，用于 方便转向组织部位。 该机构还可以响应于外力使功能元件（20）枢转，以使功能元件的长轴大致平行于组织部位的平面定向，而不弯曲导管（12）。

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