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    Reduced stiffness, bidirectionally deflecting catheter assembly
    1.
    发明授权
    Reduced stiffness, bidirectionally deflecting catheter assembly 失效
    降低刚度，双向导向组件

    公开(公告)号：US5807249A

    公开(公告)日：1998-09-15

    申请号：US791129

    申请日：1997-02-13

    申请人： Jay J. Qin ,  Aurelio Valencia ,  Scott H. West

    发明人： Jay J. Qin ,  Aurelio Valencia ,  Scott H. West

    IPC分类号： A61B5/042 ,  A61M25/00 ,  A61M25/01 ,  A61M25/092 ,  A61B5/04

    CPC分类号： A61M25/0147 ,  A61B5/0422 ,  A61B2562/0209 ,  A61B2562/043 ,  A61M2025/015 ,  A61M2025/0161 ,  A61M25/0054

    摘要： A reduced stiffness, bidirectionally deflecting catheter assembly (2) includes a handle (4) and flexible catheter shaft (6) with a tip section (12) secured to its distal end (14). The tip section has a radially offset, longitudinally extending core wire lumen (42) through which a tapered core wire (24), extending from a core wire manipulator (56) on the handle, passes. The core wire manipulator can be moved in two different directions (58, 60) to pull or push on the core wire to cause the tip section to deflect axially in opposite directions in the same plane. The ends of the core wire are non-rotatably secured to the handle and the tip section so that rotating the handle about its axis (63) causes the tip section to deflect laterally due to torsionally forces exerted on the tip section by both the catheter shaft and the core wire. The taper on the core wire determines the size and shape of the curved tip section when the tip is axially deflected.

    摘要翻译： 减小刚度的双向偏转导管组件（2）包括具有固定到其远端（14）的尖端部分（12）的手柄（4）和柔性导管轴（6）。 尖端部分具有径向偏移的纵向延伸的芯线管腔（42），从手柄上的芯线操纵器（56）延伸的锥形芯线通过该通孔。 芯线操纵器可以在两个不同的方向（58,60）上移动以拉动或推动芯线，以使得尖端部分在相同平面中沿相反方向轴向偏转。 芯线的端部不可旋转地固定到手柄和尖端部分，使得手柄围绕其轴线（63）旋转导致尖端部分由于导管轴线施加在尖端部分上的扭转力而侧向偏转 和芯线。 芯线上的锥度决定了当尖端轴向偏转时弯曲末端部分的尺寸和形状。