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    Ablation catheter assembly having a virtual electrode comprising portholes
    242.
    发明授权
    Ablation catheter assembly having a virtual electrode comprising portholes 有权
    消融导管组件，其具有包括孔的虚拟电极

    公开(公告)号：US06984232B2

    公开(公告)日：2006-01-10

    申请号：US10347034

    申请日：2003-01-17

    Applicant: Guy P. Vanney ,  Jeremy D. Dando ,  Joshua L. Dudney

    Inventor： Guy P. Vanney ,  Jeremy D. Dando ,  Joshua L. Dudney

    IPC: A61B18/18

    CPC classification number: A61B18/1492 ,  A61B2017/00867 ,  A61B2018/00041 ,  A61B2018/00375 ,  A61B2018/1472 ,  C08L2201/12

    Abstract: An ablation catheter having a catheter shaft and a virtual electrode, the virtual electrode comprising portholes through an outer peripheral wall of the catheter shaft and a metal electrode, the catheter being used for treatment of cardiac arrhythmia, for example, atrial fibrillation, by electrically isolating a vessel, such as a pulmonary vein, from a chamber, such as the left atrium. The catheter shaft includes a proximal portion and a distal portion. The distal portion includes an active region, which is either a looped structure transverse to the longitudinal axis of the catheter shaft, or a linear structure that extends parallel to the longitudinal axis of the catheter shaft. During use, the active region is directed into contact with, for example, the wall of a pulmonary vein. Upon energization, the virtual electrode creates a continuous lesion on an inner wall of the pulmonary vein, thereby electrically isolating the pulmonary vein from the left atrium.

    Abstract translation: 一种具有导管轴和虚拟电极的消融导管，所述虚拟电极包括穿过导管轴的外周壁的舷孔和金属电极，所述导管用于治疗心律失常，例如心房颤动，通过电隔离 来自诸如左心房的腔室的血管，例如肺静脉。 导管轴包括近端部分和远端部分。 远侧部分包括活动区域，其是横向于导管轴的纵向轴线的环形结构，或者平行于导管轴的纵向轴线延伸的线性结构。 在使用期间，有源区域被引导与例如肺静脉的壁接触。 在通电时，虚拟电极在肺静脉的内壁上产生连续的病变，从而将肺静脉与左心房电隔离。

    Ablation probe with temperature sensitive electrode array
    245.
    发明申请
    Ablation probe with temperature sensitive electrode array 失效
    消融探头带温度敏感电极阵列

    公开(公告)号：US20050131508A1

    公开(公告)日：2005-06-16

    申请号：US10734648

    申请日：2003-12-11

    Applicant: Robert Garabedian ,  Amy Kelly ,  Steve Landreville

    Inventor： Robert Garabedian ,  Amy Kelly ,  Steve Landreville

    IPC: A61B18/14 ,  A61N1/05

    CPC classification number: A61B18/1477 ,  A61B18/148 ,  A61B2017/00867 ,  A61B2018/00577 ,  A61B2018/143 ,  A61B2018/1432 ,  C08L2201/12

    Abstract: A medical probe assembly and method are provided for ablating tissue. The probe assembly comprises an elongated shaft and an electrode array mechanically coupled to the distal end of the shaft. The electrode array is configured to assume an outwardly curved shape, when exposed to a first temperature, and assume a pointed tip when exposed to a second temperature less than the first temperature. The first temperature is preferably greater than body temperature, e.g., equal to the tissue ablation temperature, and the second temperature is preferably less than a tissue ablation temperature, e.g., body temperature. In this manner, the pointed tip assumed by the electrode array facilitates introduction of the probe assembly through the tissue prior to the ablation process, while the outwardly curved shape assumed by the electrode array facilitates deployment of the electrode array within the tissue during the ablation process. The exposed needle electrodes also facilitate the visualization of the probe assembly under fluoroscopy. The probe assembly comprises an optional deployment member, which is configured to linearly expand when exposed to a third temperature, thereby displacing the electrode array.

    Abstract translation: 提供了用于烧蚀组织的医疗探针组件和方法。 探针组件包括细长轴和机械耦合到轴的远端的电极阵列。 当暴露于第一温度时，电极阵列构造成呈现向外弯曲的形状，并且当暴露于小于第一温度的第二温度时呈现尖端尖端。 第一温度优选地大于体温，例如等于组织消融温度，并且第二温度优选小于组织消融温度，例如体温。 以这种方式，由电极阵列假设的尖端有助于在消融过程之前通过组织引入探针组件，而由电极阵列假设的向外弯曲的形状有助于在消融过程期间电极阵列在组织内的展开 。 暴露的针电极还有助于荧光检查下探针组件的可视化。 探针组件包括可选的展开构件，其构造成当暴露于第三温度时线性膨胀，从而移位电极阵列。

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