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    ULTRASOUND ABLATION APPARATUS WITH DISCRETE STAGGERED ABLATION ZONES
    2.
    发明公开
    ULTRASOUND ABLATION APPARATUS WITH DISCRETE STAGGERED ABLATION ZONES 有权
    具有离散交错烧蚀带的超声波清除装置

    公开(公告)号：EP2670315A1

    公开(公告)日：2013-12-11

    申请号：EP12703413.0

    申请日：2012-02-02

    申请人： St. Jude Medical, Inc.

    发明人： NGUYEN, Tho Hoang ,  HATA, Cary ,  DE LA RAMA, Alan ,  TRAN, Vivian ,  CHEN, Peter

    IPC分类号： A61B17/22 ,  A61B17/00 ,  A61N7/02

    CPC分类号： A61B17/2202 ,  A61B5/01 ,  A61B5/0402 ,  A61B5/6852 ,  A61B2017/00243 ,  A61B2017/00247 ,  A61B2017/22021 ,  A61B2017/320084 ,  A61B2018/00392 ,  A61N7/022 ,  A61N2007/003 ,  A61N2007/0078

    摘要： An ablation apparatus comprises an ultrasonic transducer which includes a piezoelectric element having a cylindrical shape; a plurality of external electrodes disposed on the outer surface of the piezoelectric element; and at least one internal electrode disposed on the inner surface of the piezoelectric element. The at least one internal electrode provides corresponding internal electrode portions that are disposed opposite the external electrodes with respect to the piezoelectric element, the external electrodes and the at least one internal electrode to be energized to apply an electric field across the piezoelectric element. The ultrasonic ablation zones of the external electrodes are distributed in a staggered configuration so as to span one or more open arc segments around the longitudinal axis, and the ultrasound ablation zones of all external electrodes projected longitudinally onto any lateral plane which is perpendicular to the longitudinal axis span a substantially closed loop around the longitudinal axis.

    摘要翻译： 一种消融装置包括：超声波换能器，其包括具有圆柱形状的压电元件; 设置在压电元件的外表面上的多个外部电极; 以及设置在压电元件的内表面上的至少一个内部电极。 该至少一个内部电极提供相对于压电元件与外部电极相对设置的相应的内部电极部分，外部电极和至少一个内部电极被激励以在压电元件上施加电场。 外部电极的超声波消融区域以交错配置分布，以跨越围绕纵向轴线的一个或多个开放弧段，并且所有外部电极的超声波消融区域纵向投影到任何垂直于纵向 轴围绕纵轴跨越基本闭环。