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    Ultrasound ablation apparatus with discrete staggered ablation zones
    3.
    发明授权
    Ultrasound ablation apparatus with discrete staggered ablation zones 有权
    具有离散交错消融区域的超声消融装置

    公开(公告)号：US08974446B2

    公开(公告)日：2015-03-10

    申请号：US13019563

    申请日：2011-02-02

    申请人： Tho Hoang Nguyen ,  Cary Hata ,  Alan De La Rama ,  Vivian Tran ,  Peter C. Chen

    发明人： Tho Hoang Nguyen ,  Cary Hata ,  Alan De La Rama ,  Vivian Tran ,  Peter C. Chen

    IPC分类号： A61B18/04 ,  A61B17/22 ,  A61N7/02 ,  A61B5/01 ,  A61B5/0402 ,  A61B5/00 ,  A61B17/00 ,  A61B17/32 ,  A61B18/00 ,  A61N7/00

    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： 消融装置包括：超声波换能器，其包括具有圆筒形状的压电元件; 设置在所述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。 所述至少一个内部电极相对于所述压电元件，所述外部电极和所述至少一个内部电极与所述外部电极相对设置相应的内部电极部分，以在所述压电元件上施加电场。 外部电极的超声波消融区域以交错的构型分布，以跨越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消融区域纵向投影到垂直于纵向的任何横向平面 轴线围绕纵向轴线跨越基本上闭合的环路。

    System and methods for locating and ablating arrhythomogenic tissues
    8.
    发明申请
    System and methods for locating and ablating arrhythomogenic tissues 审中-公开
    用于定位和消融假性组织的系统和方法

    公开(公告)号：US20050004441A1

    公开(公告)日：2005-01-06

    申请号：US10897887

    申请日：2004-07-22

    申请人： Peter Chen ,  Alan de la Rama ,  Cary Hata ,  Vivian Tran

    发明人： Peter Chen ,  Alan de la Rama ,  Cary Hata ,  Vivian Tran

    IPC分类号： A61B5/042 ,  A61B17/00 ,  A61B17/22 ,  A61N7/02 ,  A61B18/04

    CPC分类号： A61N7/022 ,  A61B5/0422 ,  A61B5/6857 ,  A61B2017/00053 ,  A61B2017/00084 ,  A61B2017/00243 ,  A61B2017/22051

    摘要： A catheter for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region has a handle assembly, and a shaft having a proximal end coupled to the handle assembly. The catheter also has a mapping element provided adjacent its distal end, and an ablation element positioned spaced apart along the shaft from the mapping element. The mapping element is first positioned distally to the desired treatment location in the selected annulus region and the distal location is mapped. The expandable member enclosing the ablation element is inflated and contrast medium injected to determine the orientation of the ablation element with respect to the annulus region. After the target ablation site is determined and the PV potentials verified, the ablation element is activated for therapeutic energy delivery.

    摘要翻译： 用于感测关于心脏的所选择的环区域并且用于治疗所选择的环带区域中的组织的电事件的导管具有手柄组件和具有联接到手柄组件的近端的轴。 导管还具有邻近其远端提供的映射元件，以及沿着轴与映射元件间隔开的消融元件。 首先将映射元件定位在所选择的环形区域中的期望治疗位置的远侧，并映射远端位置。 围绕消融元件的可膨胀构件被充气，并且注入造影剂以确定消融元件相对于环带区域的取向。 在确定目标消融部位并验证PV电位之后，消融元件被激活用于治疗能量递送。