公开(公告)号：US20020161422A1

公开(公告)日：2002-10-31

申请号：US09996235

申请日：2001-11-27

Applicant: EP Technologies, Inc.

Inventor： David K. Swanson ,  Russell B. Thompson ,  Sidney D. Fleischman ,  Dorin Panescu ,  James G. Whayne

IPC: A61B018/18

CPC classification number: A61N1/06 ,  A61B18/1492 ,  A61B2018/00148 ,  A61B2018/00214

Abstract: A catheter assembly comprising a elongated, flexible support structure having an axis. The assembly also includes an elongated porous electrode assembly carried by the support structure along the axis for contact with tissue. The elongated porous electrode assembly comprises a wall having an exterior peripherally surrounding an interior area, a lumen to convey a medium containing ions into the interior area, and an element coupling the medium within the interior area to a source of electrical energy. At least a portion of the wall comprising a porous material is sized to allow passage of ions contained in the medium to thereby enable ionic transport of electrical energy through the porous material to the exterior of the wall to form a continuous elongated lesion pattern in tissue contacted by the wall. The support structure can have a curvilinear geometry, e.g., a loop shape, and the elongated porous electrode assembly conforms to the curvilinear geometry.

Abstract translation: 导管组件，其包括具有轴的细长的柔性支撑结构。 组件还包括由支撑结构承载的细长多孔电极组件，沿着轴线与组织接触。 细长的多孔电极组件包括具有周围围绕内部区域的外部的外壁，用于将含有离子的介质输送到内部区域的内腔，以及将内部区域内的介质耦合到电能源的元件。 包含多孔材料的壁的至少一部分的尺寸设定成允许包含在介质中的离子通过，从而使得电能通过多孔材料离子传递到壁的外部，以在组织接触中形成连续的细长损伤图案 在墙上。 支撑结构可以具有曲线几何形状，例如环形，并且细长多孔电极组件符合曲线几何形状。

公开(公告)号：US20030055419A1

公开(公告)日：2003-03-20

申请号：US09962662

申请日：2001-09-24

Applicant: EP Technologies, Inc.

Inventor： Dorin Panescu ,  Sidney D. Fleischman ,  David K. Swanson

IPC: A61B018/18

CPC classification number: A61B18/1206 ,  A61B18/1402 ,  A61B18/1492 ,  A61B2018/00083 ,  A61B2018/00095 ,  A61B2018/00791 ,  A61B2018/00803 ,  A61N1/403

Abstract: Systems and methods heat or ablate body tissue by positioning an electrode to transmit heat or ablation energy to a tissue region. The systems and methods measure a first temperature using a temperature sensing element associated with the electrode. The systems and methods also measure a second temperature using a temperature sensing element associated with the electrode. The systems and methods process at least one of the first and second temperatures to derive a prediction of maximum temperature of the tissue region. The systems and methods generate an output that controls the transmission of the heating or ablation energy based, at least in part, upon the maximum tissue temperature prediction.

Abstract translation: 系统和方法通过将电极定位以将热量或消融能量传递到组织区域来加热或消融身体组织。 系统和方法使用与电极相关联的温度感测元件来测量第一温度。 系统和方法还使用与电极相关联的温度感测元件测量第二温度。 系统和方法处理第一和第二温度中的至少一个以导出组织区域的最大温度的预测。 系统和方法至少部分地基于最大组织温度预测产生控制加热或消融能量传递的输出。