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1. 发明申请

WO1995018576A3 RADIOFREQUENCY ABLATION SYSTEM 审中-公开
公开(公告)号：WO1995018576A3
公开(公告)日：1995-07-13
申请号：PCT/US1995000026
申请日：1995-01-04
申请人： MEDTRONIC CARDIORHYTHM
发明人： MEDTRONIC CARDIORHYTHM , STRUL, Bruno , LADD, Kevin, C.
IPC分类号： A61B17/39

2. 发明申请

WO1997005822A2 ELECTRODE CATHETER 审中-公开
标题翻译：电极导管
公开(公告)号：WO1997005822A2
公开(公告)日：1997-02-20
申请号：PCT/US1996012335
申请日：1996-07-26
申请人： MEDTRONIC CARDIORHYTHM
发明人： MEDTRONIC CARDIORHYTHM , BREINING, Peter, M. , WEST, Scott, H.
IPC分类号： A61B05/042
CPC分类号： A61B5/6855 , A61B5/0422 , A61B18/14 , A61B18/1492 , A61B2017/003 , A61B2018/0016 , A61B2018/00357 , A61B2018/00577 , A61B2018/1467 , A61B2562/0209 , A61B2562/043
摘要： An electrode catheter (2) includes a handle (4) to which a catheter shaft (6) is mounted. The catheter shaft has a distal end (10) carrying plurality of electrodes (12). Dual purpose wires (18) extend from an electrical connector (14) on the handle, through separate axial lumens (16) in the catheter shaft and to the electrodes. The dual purpose wires are physically secured at their distal and proximal ends to the distal end of the catheter shaft and to the handle, respectively, so that rotation of the handle causes a rotational torque to be transmitted through the dual purpose wires to the distal end of the catheter shaft. Each dual purpose wire has an electrical resistance of no greater than about .80 ohms per centimeter and a torsional stiffness of at least about .25 to 1.0 inch-ounce (17654 to 70616 dyne-cm) for each 110 cm length of catheter shaft when the proximal end of the catheter shaft is rotated 3 turns. This construction provides a simply constructed, low cost torquing electrode catheter.
摘要翻译：电极导管（2）包括一个手柄（4），安装有导管轴（6）。导管轴具有承载多个电极（12）的远端（10）。双用途线（18）从手柄上的电连接器（14）延伸通过导管轴中的分离的轴向腔（16）和电极。双用途导线在其远端和近端处分别物理地固定到导管轴的远端和手柄，使得手柄的旋转使得旋转扭矩通过双用途导线传递到远端的导管轴。每个双用途导线的电阻值不大于约0.8欧姆/厘米，对于每个110厘米长度的导管轴，扭转刚度至少约为0.25至1.0英寸盎司（17654至70616达因厘米），当导管轴的近端旋转3圈。这种结构提供了简单构造的低成本扭转电极导管。

3. 发明申请

WO1996034646A1 DUAL CURVE ABLATION CATHETER AND METHOD 审中-公开
标题翻译：双曲线吸收管和方法
公开(公告)号：WO1996034646A1
公开(公告)日：1996-11-07
申请号：PCT/US1996005449
申请日：1996-04-19
申请人： MEDTRONIC CARDIORHYTHM
发明人： MEDTRONIC CARDIORHYTHM , COSIO, Francisco, G. , NGUYEN, Frank , MAGUIRE, Mark, A.
IPC分类号： A61M25/01
CPC分类号： A61M25/0141 , A61B18/14 , A61B2018/00946 , A61B2018/00952 , A61M25/0054 , A61M25/0144 , A61M25/0147 , A61M2025/015 , A61M2025/0161
摘要： A dual curve ablation catheter (2), especially suited for treating atrial flutter, includes a shaft (4) with a deflectable tip (20) at the distal end (6) and a handle (10) at the proximal end (8). The tip includes a highly flexible distal segment (30), a relatively stiff intermediate segment (28) and a flexible proximal segment (26) so that pulling on a manipulator wire (16) attached to the distal segment causes the distal segment to curve and engage, for example, an isthmus of tissue (106) adjacent the tricuspid valve (104) and the inferior vena cava (98) and causes the proximal segment to curve and press against the wall (110) of the inferior vena cava so as to stabilize the catheter. Ablation energy can be supplied through the ablation electrodes (48, 68) simultaneously or one at a time to ablate tissue at the isthmus without the need for moving the catheter.
摘要翻译：特别适用于治疗心房扑动的双曲线消融导管（2）包括在远端（6）处具有可偏转尖端（20）的轴（4）和在近端（8）处的手柄（10）。尖端包括高度柔性的远侧段（30），相对刚性的中间段（28）和柔性近端段（26），使得牵引附接到远端段的操纵杆（16）导致远端段弯曲，并且接合例如邻近三尖瓣（104）和下腔静脉（98）的组织（106）的峡部，并使近端段弯曲并压靠下腔静脉的壁（110），从而稳定导管。消融能量可以同时或一次一次地通过消融电极（51）提供，以消除峡部的组织，而不需要移动导管。

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