利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

8 条记录 (耗时 0.027 秒)

    Ultrasound ablation apparatus with discrete staggered ablation zones
    1.
    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。

    Arrangement and interface for RF ablation system with acoustic feedback
    6.
    发明授权
    Arrangement and interface for RF ablation system with acoustic feedback 有权
    具有声学反馈的RF消融系统的布置和接口

    公开(公告)号：US08545409B2

    公开(公告)日：2013-10-01

    申请号：US13191690

    申请日：2011-07-27

    申请人： John Sliwa ,  Tho Hoang Nguyen ,  Zhenyi Ma ,  Stephen Morse

    发明人： John Sliwa ,  Tho Hoang Nguyen ,  Zhenyi Ma ,  Stephen Morse

    IPC分类号： A61B8/00

    CPC分类号： A61B8/0858 ,  A61B8/12 ,  A61B8/445 ,  A61B8/5223 ,  A61B18/1492 ,  A61B2018/00357 ,  A61B2018/00577 ,  A61B2018/00738 ,  A61B2034/303 ,  A61B2090/3784

    摘要： A system for ablation with acoustic feedback comprises: a catheter which includes an elongated catheter body; at least one ablation element to ablate a targeted tissue region; and a pulse-echo ultrasonic transducer arranged to emit and receive an acoustic beam along a centroid in a beam direction, at a transducer beam angle of between about 30 degrees and about 60 degrees relative to a distal direction of the longitudinal axis at a location of intersection between the longitudinal axis and the beam direction of the centroid of the acoustic beam of the ultrasonic transducer, wherein the transducer transmits and receives acoustic pulses to provide lesion information in the targeted tissue region; an ablation power subsystem; an ultrasonic transmit and receive subsystem to operate the ultrasonic transducer; a control subsystem to control operation of the ablation power subsystem and the ultrasonic transmit and receive subsystem; and a display.

    摘要翻译： 一种具有声反馈消融的系统包括：导管，其包括细长的导管体; 至少一个消融元件以消融靶向组织区域; 以及脉冲回波超声波换能器，被布置成沿着波束方向沿着质心发射和接收声束，相对于纵轴的远端方向以约30度至约60度之间的换能器射束角度在 所述超声波换能器的声束的心轴的纵轴与所述梁的方向的交点，其中所述换能器发射和接收声脉冲以在所述目标组织区域中提供病变信息; 消融电源子系统; 超声波发射和接收子系统来操作超声波换能器; 用于控制消融电力子系统和超声波发射和接收子系统的操作的控制子系统; 和显示器。

    Electrode catheter system and methods for using same
    7.
    发明授权
    Electrode catheter system and methods for using same 有权
    电极导管系统及其使用方法

    公开(公告)号：US6006123A

    公开(公告)日：1999-12-21

    申请号：US169107

    申请日：1998-10-09

    申请人： Tho Hoang Nguyen ,  Hosheng Tu

    发明人： Tho Hoang Nguyen ,  Hosheng Tu

    IPC分类号： A61B18/14 ,  A61N1/05

    CPC分类号： A61B18/1492 ,  A61B18/1233 ,  A61B2017/003 ,  A61B2017/00867 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00654 ,  A61B2018/00702 ,  A61B2018/00708 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00839 ,  A61B2018/124 ,  C08L2201/12

    摘要： A method for positioning an electrode catheter system having safety means at its distal section within a heart chamber comprises percutaneously introducing the distal end of a catheter through an artery or vein to the heart chamber. Once the catheter tip is at the desired location, the connector of the handle at the proximal end is connected to an EKG monitor. And the electrical signal from the electrodes on the distal section can be transmitted to the exterior EKG monitor for cardiac mapping. Alternately, the radio frequency current can be supplied to one or more of the electrodes on the distal section once an intimate contact with a tissue is achieved using the catheter of this invention.

    摘要翻译： 一种在心脏室内的远侧部位具有安全装置的电极导管系统的定位方法包括将导管的远端通过动脉或静脉经皮导入心室。 一旦导管尖端处于所需位置，手柄在近端的连接器连接到EKG监视器。 并且来自远端部分上的电极的电信号可以传输到外部EKG监测器用于心脏图像。 或者，一旦使用本发明的导管实现与组织的紧密接触，则射频电流可被提供给远端部分上的一个或多个电极。