公开(公告)号：EP0774989A1

公开(公告)日：1997-05-28

申请号：EP96921561.0

申请日：1996-06-06

申请人： C.R. Bard Inc.

发明人： STEVENS-WRIGHT, Debbie, E. ,  FAGAN, John, R. ,  CUSCUNA, Dino, F. ,  KARAKOZIAN, Sarkis

IPC分类号： A61B18 ,  A61M25

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

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 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 each reinforcement member distributes stresses evenly along the length of the tip assembly.