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1. 发明申请

WO2004002293A3 SYSTEMS AND METHODS FOR ELECTROSURGICAL TISSUE TREATMENT 审中-公开
标题翻译：静电组织治疗系统与方法
公开(公告)号：WO2004002293A3
公开(公告)日：2005-07-28
申请号：PCT/US0320574
申请日：2003-06-27
申请人： ARTHROCARE CORP , WOLOSZKO JEAN , BAKER MICHAEL A , DAHLA ROBERT H , KAHLON HARDEV , VILLARUEL ADELINA , NGUYEN CINDY TRUC , GUTIERREZ IRMA
发明人： WOLOSZKO JEAN , BAKER MICHAEL A , DAHLA ROBERT H , KAHLON HARDEV , VILLARUEL ADELINA , NGUYEN CINDY TRUC , GUTIERREZ IRMA
IPC分类号： A61B20060101 , A61B1/00 , A61B18/04 , A61B18/14 , A61B18/18
CPC分类号： A61B18/148 , A61B18/14 , A61B2018/00577 , A61B2018/00583 , A61B2018/1213 , A61B2018/1472
摘要： 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.
摘要翻译：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。

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