ELECTROSURGICAL INSTRUMENT AND METHOD OF USE
    1.
    发明申请
    ELECTROSURGICAL INSTRUMENT AND METHOD OF USE 审中-公开
    静电仪器及其使用方法

    公开(公告)号:US20080045942A1

    公开(公告)日:2008-02-21

    申请号:US11925092

    申请日:2007-10-26

    IPC分类号: A61B18/12

    摘要: An electrosurgical medical device and method for creating thermal welds in engaged tissue. In one embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying a variable resistive body of a positive temperature coefficient material that has a selected decreased electrical conductance at each selected increased temperature thereof over a targeted treatment range. The variable resistive body can be engineered to bracket a targeted thermal treatment range, for example about 60° C. to 80° C., at which tissue welding can be accomplished. In one mode of operation, the engagement plane will automatically modulate and spatially localize ohmic heating within the engaged tissue from Rf energy application across micron-scale portions of the engagement surface. In another mode of operation, a variable resistive body will focus conductive heating in a selected portion of the engagement surface.

    摘要翻译: 一种用于在接合组织中产生热焊缝的电外科医疗装置和方法。 在一个实施例中,仪器的至少一个钳口限定了携带正温度系数材料的可变电阻体的组织接合平面,其在目标治疗范围内的每个选定的升高温度下具有选定的降低的电导率。 可变电阻体可以被设计成支撑目标热处理范围,例如约60℃至80℃,在该热处理范围内可以实现组织焊接。 在一种操作模式中,接合平面将自动地调节并且在接合表面的微米级部分的Rf能量施加之间空间地定位所接合组织内的欧姆加热。 在另一种操作模式中,可变电阻体将导电加热聚焦在接合表面的选定部分中。