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    Tissue heating and ablation systems and methods using self-heated electrodes
    25.
    发明授权
    Tissue heating and ablation systems and methods using self-heated electrodes 失效
    组织加热和消融系统和使用自热电极的方法

    公开(公告)号：US06245061B1

    公开(公告)日：2001-06-12

    申请号：US09464952

    申请日：1999-12-15

    申请人： Dorin Panescu ,  Sidney D. Fleischman ,  David K. Swanson

    发明人： Dorin Panescu ,  Sidney D. Fleischman ,  David K. Swanson

    IPC分类号： A01B1739

    CPC分类号： A61B18/1206 ,  A61B18/1402 ,  A61B18/1492 ,  A61B2018/00083 ,  A61B2018/00095 ,  A61B2018/00791 ,  A61B2018/00803 ,  A61N1/403

    摘要： Systems and methods using an electrode able to transmit heating or ablation energy into tissue include first and second sensing elements associated with the electrode for measuring first and second temperatures. The electrode also includes a heating element in thermal conductive contact with the electrode for heating the electrode. The systems and methods sequentially activate the heating element and sense temperatures without transmitting tissue heating or ablation energy, and then transmit heating or ablation energy and sense temperatures without activating the heating element, to derive from the sensed temperatures a prediction of maximum tissue temperature.

    摘要翻译： 使用能够将加热或消融能量传递到组织中的电极的系统和方法包括与用于测量第一和第二温度的电极相关联的第一和第二感测元件。 电极还包括与用于加热电极的电极导热接触的加热元件。 系统和方法顺序地激活加热元件并且感测温度而不传递组织加热或消融能量，然后传递加热或消融能量并感测温度而不激活加热元件，从感测的温度导出最大组织温度的预测。

    System and method for measuring subsurface temperature of tissue during ablation
    26.
    发明授权
    System and method for measuring subsurface temperature of tissue during ablation 有权
    消融期间测量组织地下温度的系统和方法

    公开(公告)号：US06217574B1

    公开(公告)日：2001-04-17

    申请号：US09234365

    申请日：1999-01-20

    申请人： Wilton W. Webster

    发明人： Wilton W. Webster

    IPC分类号： A61B1814

    CPC分类号： A61B18/1492 ,  A61B18/16 ,  A61B2018/00011 ,  A61B2018/00029 ,  A61B2018/00738 ,  A61B2018/00744 ,  A61B2018/00791 ,  A61B2018/00803 ,  A61B2018/00821 ,  A61B2018/00839 ,  A61B2018/00875 ,  A61B2018/124 ,  A61B2018/1273 ,  A61B2018/162 ,  A61B2218/002

    摘要： An RF ablation system comprises irrigated split tip electrode catheter, an RF generator and a signal processor. The catheter comprises four orthogonally arranged electrodes at the distal tip. The catheter is used to map the electrical activity of a heart chamber to locate site(s) of aberrant electrical pathways to be ablated. Once an ablation site has been located, the signal processor activates the RF generator to transmit a low level RF current to each electrode member of the split tip electrode. The signal processor receives signals indicative of the impedance between each electrode member and one or more surface indifferent electrodes and determines which electrode members are associated with the highest impedance. Such electrode members are those in greatest contact with the myocardium. The signal processor then automatically activates the RF generator to transmit an RF ablation current to the electrode members in contact with the myocardium to create a lesion.

    摘要翻译： 射频消融系统包括灌注分离尖端电极导管，RF发生器和信号处理器。 该导管包括四个正交布置的电极在远端。 导管用于映射心脏室的电活动以定位要消融的异常电通路的位点。 一旦已经定位了消融部位，则信号处理器激活RF发生器以将低电平RF电流传送到分离尖端电极的每个电极部件。 信号处理器接收指示每个电极构件和一个或多个无表面电极之间的阻抗的信号，并确定哪些电极构件与最高阻抗相关联。 这样的电极构件是与心肌最接触的那些。 信号处理器然后自动激活RF发生器以将RF消融电流传送到与心肌接触的电极部件，以产生病变。

    Split tip electrode catheter and signal processing RF ablation system
    27.
    发明授权
    Split tip electrode catheter and signal processing RF ablation system 有权
    分裂尖端电极导管和信号处理射频消融系统

    公开(公告)号：US06210406B1

    公开(公告)日：2001-04-03

    申请号：US09205628

    申请日：1998-12-03

    申请人： Wilton W. Webster

    发明人： Wilton W. Webster

    IPC分类号： A61B1814

    CPC分类号： A61B18/1492 ,  A61B18/16 ,  A61B2018/00011 ,  A61B2018/00029 ,  A61B2018/00738 ,  A61B2018/00744 ,  A61B2018/00791 ,  A61B2018/00803 ,  A61B2018/00821 ,  A61B2018/00839 ,  A61B2018/00875 ,  A61B2018/124 ,  A61B2018/1273 ,  A61B2018/162 ,  A61B2218/002

    摘要： An RF ablation system comprises irrigated split tip electrode catheter, an RF generator and a signal processor. The catheter comprises four orthogonally arranged electrodes at the distal tip. The catheter is used to map the electrical activity of a heart chamber to locate site(s) of aberrant electrical pathways to be ablated. Once an ablation site has been located, the signal processor activates the RF generator to transmit a low level RF current to each electrode member of the split tip electrode. The signal processor receives signals indicative of the impedance between each electrode member and one or more surface indifferent electrodes and determines which electrode members are associated with the highest impedance. Such electrode members are those in greatest contact with the myocardium. The signal processor then automatically activates the RF generator to transmit an RF ablation current to the electrode members in contact with the myocardium to create a lesion.

    摘要翻译： 射频消融系统包括灌注分离尖端电极导管，RF发生器和信号处理器。 该导管包括四个正交布置的电极在远端。 导管用于映射心脏室的电活动以定位要消融的异常电通路的位点。 一旦已经定位了消融部位，则信号处理器激活RF发生器以将低电平RF电流传送到分离尖端电极的每个电极部件。 信号处理器接收指示每个电极构件和一个或多个无表面电极之间的阻抗的信号，并确定哪些电极构件与最高阻抗相关联。 这样的电极构件是与心肌最接触的那些。 信号处理器然后自动激活RF发生器以将RF消融电流传送到与心肌接触的电极部件，以产生病变。