公开(公告)号：EP3050530A1

公开(公告)日：2016-08-03

申请号：EP16275004.6

申请日：2016-01-05

申请人： Cook Medical Technologies LLC

发明人： Elgaard, Per ,  Torp, Allan ,  Paamand, Rune T.

IPC分类号： A61B18/04 ,  A61B18/08 ,  A61B18/14 ,  A61B18/24 ,  A61B18/00 ,  A61B18/18 ,  A61B90/00

CPC分类号： A61B18/1492 ,  A61B18/04 ,  A61B18/08 ,  A61B18/1815 ,  A61B18/24 ,  A61B18/245 ,  A61B2018/00083 ,  A61B2018/00107 ,  A61B2018/00285 ,  A61B2018/00345 ,  A61B2018/00398 ,  A61B2018/00404 ,  A61B2018/00416 ,  A61B2018/00577 ,  A61B2018/00589 ,  A61B2018/00642 ,  A61B2018/00791 ,  A61B2018/00827 ,  A61B2018/1861 ,  A61B2090/3966

摘要： RF ablation apparatus (10) includes an anode electrode assembly (12) including an anode terminal (20) housed within a catheter (30). The catheter (30) includes a distal end wall (34) which is disposed in a plane substantially perpendicular to the longitudinal dimension of the catheter (30). The anode electrode (22) is slidably received within the cathode (30) and can be extended out beyond the distal end (32) of the catheter (30) to provide at least a first terminal for an ablation circuit. The distal end wall (34) is sized and shaped to hold a thrombus formed on the anode electrode (22) so that the anode electrode (22) can be withdrawn from within the thrombus formation and into the catheter (30), without the thrombus formation being pulled with the anode terminal (22). The outer surface of the catheter (30), or at least at the distal end (32) thereof, is made of an insulating or non-conducting material, such that a thrombus does not form over the catheter (30). The assembly allows for the generation of a thrombus to occlude a vessel (60) and without the risk of pulling any formed thrombus with the apparatus upon retrieval of the apparatus from the patient.

摘要翻译： RF消融设备（10）包括阳极电极组件（12），阳极电极组件（12）包括容纳在导管（30）内的阳极端子（20）。 导管（30）包括远侧壁（34），该远端壁（34）设置在基本上垂直于导管（30）的纵向尺寸的平面内。 阳极电极（22）可滑动地容纳在阴极（30）内并且可以延伸超过导管（30）的远端（32），以至少提供用于消融电路的第一端子。 所述远端壁（34）的尺寸和形状被设计成容纳形成在所述阳极电极（22）上的血栓，使得所述阳极电极（22）可以从所述血栓形成内抽出并进入所述导管（30），而没有所述血栓 用阳极端子（22）拉动地层。 导管（30）的外表面，或至少在其远端（32）处由绝缘或非导电材料制成，使得血栓不会形成在导管（30）之上。 组件允许产生血栓以封闭容器（60），并且在从患者回收装置时不会将装置引起任何形成的血栓的风险。

公开(公告)号：EP3552569A1

公开(公告)日：2019-10-16

申请号：EP19175744.2

申请日：2016-03-23

申请人： Cook Medical Technologies LLC

发明人： Pedersen, Per Elgaard ,  Torp, Allan ,  Butzbacker, Raimo Urban ,  Paamand, Rune T.

IPC分类号： A61B18/14

摘要： An RF ablation system (10) includes a catheter (12) having a lumen therein and a first electrode (18). A second electrode (20) is disposed around the catheter (12) proximate the distal end (14) of the catheter (12) and spaced from the first electrode (18) by an insulating spacer which may be a part (36) of the catheter (12) or a sleeve (42) on the first electrode (18). The first electrode (18) is able to slide in and out of the catheter (12) in order to vary the exposed length of the first electrode (18) and as a result to alter the energy density at the first electrode (18) in order to exhibit different heating effects. A control unit (24) controls current through the electrodes (18, 20) and also the exposed length of the first electrode (18). The second electrode (20) has a surface area at least twice that of the first electrode (18) in order to act as a dispersive of electrode. As a consequence, negligible heat is generated at the second electrode (20) and therefore no blood clotting or other ablation material is formed over the catheter (12).

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。