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    • 4. 发明申请
    • ELECTROSURGICAL APPARATUS AND METHODS FOR TREATMENT AND REMOVAL OF TISSUE
    • 静电设备及组织的处理和去除方法
    • WO2002102255A1
    • 2002-12-27
    • PCT/US2002/019261
    • 2002-06-18
    • ARTHROCARE CORPORATIONDAHLA, Robert, H.WOLOSZKO, Jean
    • DAHLA, Robert, H.WOLOSZKO, Jean
    • A61B17/20
    • A61B18/148A61B18/1492A61B2018/00577A61B2018/00583A61B2018/1213A61B2018/1437A61B2018/1472
    • Apparatus and methods for ablating, severing, cutting, shrinking, coagulating, or otherwise modifying a target tissue to be treated. In a method for treating a target tissue, an active electrode of an electrosurgical probe (20) is positioned in at least close proximity to the target tissue in the presence of an electrically conductive fluid. A high frequency voltage is then applied between the active electrode (203) and a return electrode (112), wherein, the high frequency voltage is sufficient to volumetrically remove (ablate), sever, or modify at least a portion of the target tissue. The probe (20) comprises a multi-lumen shaft having a plurality of internal lumens, and a return electrode coil oriented substantially parallel to the shaft distal end. The active electrode (203) may be in the form of a metal disc, a hook, or an active electrode coil. In the latter embodiment, the active electrode coil (203) is typically arranged substantially orthogonal to the return electrode coil. Methods of making an active electrode coil, a return electrode coil, and an electrosurgical probe are also disclosed.
    • 用于烧蚀,切断,切割,收缩,凝结或以其它方式修饰待治疗的靶组织的装置和方法。 在用于治疗靶组织的方法中,在存在导电流体的情况下,电外科探针(20)的活性电极至少紧邻靶组织。 然后在有源电极(203)和返回电极(112)之间施加高频电压,其中,高频电压足以体积地去除(消融),切断或修改目标组织的至少一部分。 探针(20)包括具有多个内腔的多腔轴和基本上平行于轴远端取向的返回电极线圈。 有源电极(203)可以是金属盘,钩或有源电极线圈的形式。 在后一实施例中,有源电极线圈(203)通常布置成基本上垂直于返回电极线圈。 还公开了制造有源电极线圈,返回电极线圈和电外科探头的方法。
    • 6. 发明申请
    • SYSTEMS AND METHODS FOR ELECTROSURGICAL TISSUE TREATMENT
    • 静电组织治疗系统与方法
    • WO2004002293A2
    • 2004-01-08
    • PCT/US2003/020574
    • 2003-06-27
    • ARTHROCARE CORPORATIONWOLOSZKO, JeanBAKER, Michael, A.DAHLA, Robert, H.KAHLON, HardevVILLARUEL, AdelinaNGUYEN, Cindy, TrucGUTIERREZ, Irma
    • WOLOSZKO, JeanBAKER, Michael, A.DAHLA, Robert, H.KAHLON, HardevVILLARUEL, AdelinaNGUYEN, Cindy, TrucGUTIERREZ, Irma
    • A61B
    • A61B18/148A61B18/14A61B2018/00577A61B2018/00583A61B2018/1213A61B2018/1472
    • Systems and methods are provided for applying a high frequency voltage in the presence of an electrically conductive fluid to create a relatively low-temperature plasma for ablation of tissue adjacent to, or in contact with, the plasma. In one embodiment, an electrosurgical probe or catheter is positioned adjacent the target site so that one or more active electrode(s) are brought into contact with, or close proximity to, a target tissue in the presence of electrically conductive fluid. High frequency voltage is then applied between the active electrode(s) and one or more return electrode(s) to non-thermally generate a plasma adjacent to the active electrode(s), and to volumetrically remove or ablate at least a portion of the target tissue. The high frequency voltage generates electric fields around the active electrode(s) with sufficient energy to ionize the conductive fluid adjacent to the active electrode(s). Within the ionized gas or plasma, free electrons are accelerated, and electronatoms collisions liberate more electrons, and the process cascades until the plasma contains sufficient energy to break apart the tissue molecules, causing molecular dissociation and ablation of the target tissue.
    • 提供的系统和方法用于在存在导电流体的情况下施加高频电压以产生相对低温的等离子体,以消除与等离子体相邻或与其接触的组织。 在一个实施例中,电外科探针或导管邻近靶位置定位,使得在存在导电流体的情况下使一个或多个有效电极与目标组织接触或接近。 然后将高频电压施加在有源电极和一个或多个返回电极之间以非热产生邻近有源电极的等离子体,并且对体积上去除或消除至少一部分 目标组织。 高频电压以足够的能量产生有源电极周围的电场,以使邻近有源电极的导电流体离子化。 在电离气体或等离子体中,自由电子被加速,并且电子原子碰撞释放出更多的电子,并且该过程直到等离子体含有足够的能量来分解组织分子,导致靶组织的分子解离和消融。