公开(公告)号：US5715817A

公开(公告)日：1998-02-10

申请号：US478206

申请日：1995-06-07

申请人： Debbie E. Stevens-Wright ,  John R. Fagan ,  Dino F. Cuscuna ,  Sarkis Karakozian

发明人： Debbie E. Stevens-Wright ,  John R. Fagan ,  Dino F. Cuscuna ,  Sarkis Karakozian

IPC分类号： A61B18/14 ,  A61M25/00 ,  A61M25/01 ,  A61B5/042 ,  A61N1/05

CPC分类号： A61M25/0141 ,  A61B18/1492 ,  A61M25/0136 ,  A61M25/0144 ,  A61M25/0147 ,  A61B2017/003 ,  A61B2018/00839 ,  A61B2018/00946 ,  A61B2018/00952 ,  A61M2025/015 ,  A61M2025/0161 ,  A61M25/0054

摘要： A bidirectional steering catheter comprising a distal electrode assembly, a flexible tip assembly, an elongated shaft having a central lumen running the length of the shaft, and a handle/actuator. A plurality of ring electrodes are attached to the surface of the flexible tip assembly. Signal wires running the length of the catheter are electrically connected to each ring electrode. At least two pull cables having first and second ends extend distally through the central lumen. The first end of each pull cable is attached to the handle/actuator. The second end of each pull cable is attached to the distal electrode assembly, such that the distal electrode assembly may be moved between a first and a second position within a single plane by manipulating the handle/actuator. At least two reinforcement members are located inside the flexible tip assembly. Each reinforcement member has a proximal section, a middle section and a distal section. Each proximal section has a larger diameter than each middle section, thus being stiffer than the middle section. This variable stiffness along the length of the each reinforcement member distributes stresses evenly along the length of the tip assembly.

摘要翻译： 一种双向转向导管，包括远端电极组件，柔性尖端组件，具有延伸轴的长度的中心腔的细长轴和手柄/致动器。 多个环形电极附接到柔性末端组件的表面。 运行导管长度的信号线与每个环形电极电连接。 至少两个具有第一和第二端的牵拉电缆向远侧延伸穿过中心腔。 每个拉线的第一端连接到手柄/执行器。 每个拉电缆的第二端连接到远端电极组件，使得远端电极组件可以通过操纵手柄/致动器在单个平面内在第一和第二位置之间移动。 至少两个加强构件位于柔性末端组件的内部。 每个加强构件具有近端部分，中部部分和远侧部分。 每个近端部分具有比每个中间部分更大的直径，因此比中间部分更硬。 沿着每个加强构件的长度的这种可变刚度沿尖端组件的长度均匀地分布应力。