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    • 1. 发明授权
    • Active guide wire and method of making the same
    • 主动导丝及其制作方法
    • US06936015B2
    • 2005-08-30
    • US10162896
    • 2002-06-06
    • Masayoshi EsashiYoichi HagaTakashi Mineta
    • Masayoshi EsashiYoichi HagaTakashi Mineta
    • A61M25/01A61B5/00A61M25/00
    • A61M25/09A61M2025/09108A61M2025/09141
    • An active guide wire (1) that can be used in a narrow blood vessel in a complicate vascular system such as intracerebral is disclosed as well as a method of making the same. The active wire comprises a bias coil spring (3); an outer tube (4) having the bias coil spring (3) sheathed therewith and providing an external wall for the active wire guide (1); and a shape memory alloy (SMA) actuator (5) in the form of a flat sheet anchored in and securely connected to the outer tube (4), wherein the flat sheet SMA actuator (5) is shape memorized so as to bend in a direction of the thickness of the flat sheet and has a shape running zigzag longitudinally thereof. The actuator (5) is energized with an electric current and thereby heated to have its leading end bent.
    • 公开了可以用于诸如脑内的复杂血管系统的狭窄血管中的主动导丝(1)及其制造方法。 有源线包括偏置螺旋弹簧(3); 具有与其包覆的偏置螺旋弹簧(3)的外管(4),并为主动导线器(1)提供外壁; 以及形状记录合金(SMA)致动器(5),其形式为固定在外管(4)上且牢固地连接到外管(4)上的平板形式,其中平板SMA致动器(5)形状被存储以便弯曲成 扁平片的厚度方向,并且具有纵向锯齿状的形状。 致动器(5)用电流通电,从而加热其前端弯曲。