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23 条记录 (耗时 0.026 秒)

    Ultrasound ablation apparatus with discrete staggered ablation zones
    5.
    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。

    Percutaneous lead with distal fixation
    7.
    发明授权
    Percutaneous lead with distal fixation 有权
    经皮导管远端固定

    公开(公告)号：US08521305B2

    公开(公告)日：2013-08-27

    申请号：US13099605

    申请日：2011-05-03

    申请人： Alan De La Rama ,  Peter C. Chen

    发明人： Alan De La Rama ,  Peter C. Chen

    IPC分类号： A61N1/00

    CPC分类号： A61N1/0558

    摘要： A lead includes an elongated body and an anchor segment disposed between the distal end of the body and electrodes on a distal portion of the body. The anchor segment has lobes which are separated by slits and movable between a collapsed position and an expanded position. A positioning mechanism is disposed inside the hollow interior of the body and at least partially within the anchor segment. The positioning mechanism has a distal positioning portion attached to the distal end of the body and a proximal positioning portion. A control member is connected with the proximal positioning portion to control the positioning mechanism to pull the distal end toward the proximal end so as to move the lobes from the collapsed position to the expanded position and to push the distal end away from the proximal end so as to move the lobes from the expanded to the collapsed position.

    摘要翻译： 引线包括细长主体和设置在主体的远端之间的主体部分和主体的远侧部分上的电极。 锚节段具有由狭缝分开并在折叠位置和展开位置之间移动的凸角。 定位机构设置在身体的中空内部内部，并且至少部分地在锚定段内。 定位机构具有附接到主体的远端的远侧定位部分和近端定位部分。 控制构件与近端定位部分连接以控制定位机构将远端朝向近端拉动，以便将凸起从折叠位置移动到扩张位置，并将远端远离近端推动，从而 以将波瓣从展开位置移动到折叠位置。