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    ELECTROCHEMICAL PROTECTION OF CONDUCTING CIRCUIT IN THE BODY OF A PATIENT
    3.
    发明公开
    ELECTROCHEMICAL PROTECTION OF CONDUCTING CIRCUIT IN THE BODY OF A PATIENT 审中-公开
    一例病人体内传导电路的电化学保护

    公开(公告)号：EP3181077A1

    公开(公告)日：2017-06-21

    申请号：EP16275172.1

    申请日：2016-12-05

    申请人： Cook Medical Technologies LLC

    发明人： Butzbacker, Raimo Urban ,  Paamand, Rune T.

    IPC分类号： A61B18/08 ,  A61B17/12 ,  A61B18/00 ,  A61B17/00 ,  A61B18/14

    CPC分类号： A61B18/10 ,  A61B17/12022 ,  A61B18/08 ,  A61B18/082 ,  A61B2017/00132 ,  A61B2017/00154 ,  A61B2017/00159 ,  A61B2018/00083 ,  A61B2018/00148 ,  A61B2018/00345 ,  A61B2018/00577 ,  A61B2018/00589 ,  A61B2018/00702 ,  A61B2018/0072 ,  A61B2018/00767 ,  A61B2018/00821 ,  A61B2018/1435 ,  A61N1/36125 ,  A61N1/3956

    摘要： The preferred embodiment provides apparatus (10) for ablating a vessel (80) by generating heat within a vessel to cause blood clotting to occlude the vessel. The apparatus includes an electrically resistive element (30) at the distal end (20) of the apparatus (10), the resistive element (30) being uncoated and therefore in bare form. An alternating current supply (24) feeds electrical current through the resistive element (30) to cause heating of the element (30) and surrounding blood or tissue. The alternating current power supply (24) preferably is balanced about a centre point so as to create a net sum of alternating pulses of zero. It has been found that the supply of alternating current to the resistive element (30) reduces or eliminates corrosion of the resistive element (30) in blood as the resistive element (30) is heated. Use of conductive coatings for a sacrificial anode can be avoided.

    摘要翻译： 该优选实施例提供了用于通过在血管内产生热量来引起血液凝结以堵塞血管来消融血管（80）的装置（10）。 该设备包括在设备（10）的远端（20）处的电阻元件（30），电阻元件（30）未被涂覆并因此为裸露形式。 交流电源（24）通过电阻元件（30）馈送电流以引起元件（30）和周围血液或组织的加热。 交流电源（24）优选地围绕中心点平衡，以便产生零交替脉冲的净和。 已经发现，当电阻元件（30）被加热时，向电阻元件（30）供应交流电减少或消除了血液中的电阻元件（30）的腐蚀。 可以避免使用导电涂层作为牺牲阳极。

    CATHETER WITH IRRIGATED TIP ELECTRODE WITH POROUS SUBSTRATE AND HIGH DENSITY SURFACE MICRO-ELECTRODES
    7.
    发明公开
    CATHETER WITH IRRIGATED TIP ELECTRODE WITH POROUS SUBSTRATE AND HIGH DENSITY SURFACE MICRO-ELECTRODES 有权
    与铅液导管风冷顶部多孔基材和高密度的表面微电极

    公开(公告)号：EP3040043A1

    公开(公告)日：2016-07-06

    申请号：EP15202353.7

    申请日：2015-12-23

    申请人： Biosense Webster (Israel) Ltd.

    发明人： PAPAIOANNOU, Athanassios ,  BEECKLER, Christopher Thomas ,  GOVARI, Assaf

    IPC分类号： A61B18/14 ,  A61B18/00

    CPC分类号： A61B18/1492 ,  A61B5/0422 ,  A61B5/6852 ,  A61B2018/00029 ,  A61B2018/00065 ,  A61B2018/00148 ,  A61B2018/00577 ,  A61B2018/00642 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00839 ,  A61B2018/1467 ,  A61B2018/1472 ,  A61B2018/1497 ,  A61B2218/002

    摘要： A catheter has a multifunctional "virtual" tip electrode with a porous substrate and a multitude of surface microelectrodes. The surface microelectrodes are in close proximity to each other and in a variety of configurations so as to sense tissue for highly localized intracardiac signal detection, and high density local electrograms and mapping. The porous substrate allows for flow of conductive fluid for ablating tissue. The surface microelectrodes can be formed via a metallization process that allows for any shape or size and close proximity, and the fluid "weeping" from the porous substrate provides more uniform irrigation in the form of a thin layer of saline. The delivery of RF power to the catheter tip is based on the principle of "virtual electrode," where the conductive saline flowing through the porous tip acts as the electrical connection between the tip electrode and the heart surface. The substrate and the surface electrodes are constructed of MRI compatible materials so that the physician can conduct lesion assessment in real time during an ablation procedure. The surface electrodes include noble metals, including, for example, platinum, gold and combinations thereof.

    摘要翻译： 导管具有多官能的“虚拟”尖端具有多孔基材的电极和表面微电极的多个。 表面微电极是在靠近海誓山盟和在多种构型，以便感测为高度局部化的心脏内的信号检测组织，和高密度电本地克映射。 多孔基材允许用于消融组织的导电流体的流动。 表面微电极可以经由金属化processthat允许为任何形状或尺寸和紧密接近，并且从多孔基材中的流体“哭泣”提供在盐水中的薄层的形式更均匀的灌溉而形成。 RF功率的导管尖端的输送是基于“虚拟电极”，其中流过所述多孔尖端导电盐水用作末端电极与心脏表面之间的电连接的原理。 基材和表面电极由MRI兼容材料所以没有医生可以在消融手术过程中进行实时损伤评估。 表面电极包括贵金属，包括，例如，铂，金以及它们的组合。