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    COMBINATION MONOPHASIC ACTION POTENTIAL/ABLATION CATHETER AND HIGH-PERFORMANCE FILTER SYSTEM
    1.
    发明专利
    COMBINATION MONOPHASIC ACTION POTENTIAL/ABLATION CATHETER AND HIGH-PERFORMANCE FILTER SYSTEM 未知

    公开(公告)号：AU1899292A

    公开(公告)日：1993-01-08

    申请号：AU1899292

    申请日：1992-04-16

    Applicant: EP TECHNOLOGIES, INC.

    Inventor： STUART D EDWARDS ,  MICHAEL R FRANZ ,  RUSSELL B THOMPSON ,  ROGER A STERN

    IPC: A61B5/296 ,  A61B17/00 ,  A61B18/12 ,  A61B18/14 ,  A61N1/05

    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.

    Tissue heating and ablation systems and methods which predict maximum tissue temperature
    2.
    发明申请
    Tissue heating and ablation systems and methods which predict maximum tissue temperature 失效
    组织加热和消融系统和预测最大组织温度的方法

    公开(公告)号：US20030055419A1

    公开(公告)日：2003-03-20

    申请号：US09962662

    申请日：2001-09-24

    Applicant: EP Technologies, Inc.

    Inventor： Dorin Panescu ,  Sidney D. Fleischman ,  David K. Swanson

    IPC: A61B018/18

    CPC classification number: A61B18/1206 ,  A61B18/1402 ,  A61B18/1492 ,  A61B2018/00083 ,  A61B2018/00095 ,  A61B2018/00791 ,  A61B2018/00803 ,  A61N1/403

    Abstract: Systems and methods heat or ablate body tissue by positioning an electrode to transmit heat or ablation energy to a tissue region. The systems and methods measure a first temperature using a temperature sensing element associated with the electrode. The systems and methods also measure a second temperature using a temperature sensing element associated with the electrode. The systems and methods process at least one of the first and second temperatures to derive a prediction of maximum temperature of the tissue region. The systems and methods generate an output that controls the transmission of the heating or ablation energy based, at least in part, upon the maximum tissue temperature prediction.

    Abstract translation: 系统和方法通过将电极定位以将热量或消融能量传递到组织区域来加热或消融身体组织。 系统和方法使用与电极相关联的温度感测元件来测量第一温度。 系统和方法还使用与电极相关联的温度感测元件测量第二温度。 系统和方法处理第一和第二温度中的至少一个以导出组织区域的最大温度的预测。 系统和方法至少部分地基于最大组织温度预测产生控制加热或消融能量传递的输出。

    COMBINATION MONOPHASIC ACTION POTENTIAL/ABLATION CATHETER AND HIGH-PERFORMANCE FILTER SYSTEM
    5.
    发明专利
    COMBINATION MONOPHASIC ACTION POTENTIAL/ABLATION CATHETER AND HIGH-PERFORMANCE FILTER SYSTEM 未知

    公开(公告)号：AU1998892A

    公开(公告)日：1993-01-08

    申请号：AU1998892

    申请日：1992-05-22

    Applicant: EP TECHNOLOGIES, INC.

    Inventor： STUART D EDWARDS ,  MICHAEL R FRANZ ,  RUSSELL B THOMPSON ,  ROGER A STERN

    IPC: A61B5/296 ,  A61B17/00 ,  A61B18/12 ,  A61B18/14 ,  A61N1/05

    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.

    SYSTEMS AND METHODS FOR EXAMINING HEART TISSUE
    9.
    发明申请
    SYSTEMS AND METHODS FOR EXAMINING HEART TISSUE 审中-公开
    用于检查心脏组织的系统和方法

    公开(公告)号：WO1996025097A1

    公开(公告)日：1996-08-22

    申请号：PCT/US1996002190

    申请日：1996-02-16

    Applicant: EP TECHNOLOGIES, INC.

    Inventor： EP TECHNOLOGIES, INC. ,  SWANSON, David, K. ,  PANESCU, Dorin ,  WHAYNE, James, G.

    IPC: A61B05/0402

    CPC classification number: A61B5/6855 ,  A61B5/0422 ,  A61B5/6858 ,  A61B18/1492 ,  A61B2090/065 ,  A61B2562/0209 ,  A61B2562/043 ,  A61N1/056

    Abstract: Systems and methods use an array (20) of multiple electrodes (24) supported for operative association with a region of heart tissue, in tandem with a roving second electrode (36) supported for movement relative to the multiple electrodes for operative association with selected different regions of endocardial tissue within the heart. An analog or digital processing element (32) conditions one of the multiple electrodes and the roving electrode to emit a pacing signal while the other one of the multiple electrodes and the roving electrode records paced electro-grams occurring as a result of the pacing signal. A template of cardiac event of known diagnosis sensed using the array of multiple electrodes is input. A sample of a cardiac event acquired by pacing from at least one roving electrode and sensed with the array of multiple electrodes is input. The processing element and method electronically compare the sample to a template and generate an output.

    Abstract translation: 系统和方法使用多个电极（24）的阵列（20），其被支撑用于与心脏组织的区域有效地相关联，与被支撑用于相对于多个电极移动的粗纱第二电极（36）串联，以与所选择的不同的 心脏内心脏组织的区域。 模拟或数字处理元件（32）调节多个电极和粗纱电极之一以发出起搏信号，而多个电极和粗纱电极中的另一个记录起搏电针作为起搏信号的结果。 输入使用多个电极阵列感测的已知诊断的心脏事件的模板。 输入通过起搏从至少一个粗纱电极获取的心脏事件的样本，并用多个电极的阵列感测。 处理元件和方法将样本与模板进行电子比较并生成输出。

    SYSTEMS AND METHODS FOR FILTERING SIGNALS DERIVED FROM BIOLOGICAL EVENTS
    10.
    发明申请
    SYSTEMS AND METHODS FOR FILTERING SIGNALS DERIVED FROM BIOLOGICAL EVENTS 审中-公开
    用于过滤生物活动信号的系统和方法

    公开(公告)号：WO1996025093A1

    公开(公告)日：1996-08-22

    申请号：PCT/US1996001977

    申请日：1996-02-16

    Applicant: EP TECHNOLOGIES, INC.

    Inventor： EP TECHNOLOGIES, INC. ,  PANESCU, Dorin ,  WHAYNE, James, G. ,  SWANSON, David, K.

    IPC: A61B05/0402

    CPC classification number: H03H17/0263 ,  A61B5/0422 ,  A61B5/6855 ,  A61B5/6858 ,  A61B2562/0209 ,  A61B2562/043 ,  A61N1/3702

    Abstract: Systems and methods provide nonlinear, non-median filters (56) for signals derived from biological events. The systems and methods select a set of n sample values arranged with respect to time from the derived biological signal input. The systems and methods arrange the n sample values of the set into ordered positions following a predetermined permutation. The systems and methods select one of the ordered positions z within the permutation, where z is an odd positive integer greater or equal to one but less than or equal to n. The systems and methods generate a processed output (54) comprising the sample value occupying the ordered position z in the permutation.

    Abstract translation: 系统和方法为来自生物事件的信号提供非线性非中值滤波器（56）。 系统和方法从衍生的生物信号输入中选择相对于时间排列的一组n个样本值。 系统和方法将集合的n个样本值排列在预定排列之后的有序位置。 系统和方法选择置换中的有序位置z之一，其中z是大于或等于1但小于或等于n的奇正整数。 系统和方法产生包括在排列中占据有序位置z的样本值的经处理的输出（54）。

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