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    BIDIRECTIONAL STEERING CATHETER
    1.
    发明公开
    BIDIRECTIONAL STEERING CATHETER 失效
    BIDIREKTIONELER LENKKATHETER

    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.

    DISPLACEABLE ABLATION ELECTRODE
    4.
    发明公开
    DISPLACEABLE ABLATION ELECTRODE 审中-公开
    鞋跟消融

    公开(公告)号：EP1112033A1

    公开(公告)日：2001-07-04

    申请号：EP00945387.9

    申请日：2000-07-11

    申请人： C.R. BARD, INC.

    发明人： KARAKOZIAN, Sarkis

    IPC分类号： A61B18/14

    CPC分类号： A61B18/1492 ,  A61B18/1815 ,  A61B2018/00797 ,  A61B2018/00815

    摘要： An ablation catheter comprising, in an exemplary embodiment, a probe having a proximal end and a distal end and an electrode which is axially displaceable sliding along the probe. A first pull cable is attached to the electrode, extends from the electrode towards the distal end of the probe, and doubles back through the catheter for pulling the electrode toward the distal end of the probe. The first pull cable is disposed within a lumen formed in the catheter that extends substantially from the distal end to the proximal end. A second pull cable is attached to the opposite end of the electrode and extends from the electrode towards the proximal end of the catheter for pulling the electrode away from the distal end. The second pull cable is disposed within a lumen formed in the catheter. Both pull cables are coupled to an actuator mechanism at the proximal end of the catheter for effecting axial movement of the electrode relative to the distal tip of the probe by selectively tensioning the respective pull cables.