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    • 6. 发明授权
    • Guidewire with an intermediate variable stiffness section
    • 导丝具有中间可变刚度部分
    • US06524301B1
    • 2003-02-25
    • US09748294
    • 2000-12-21
    • W. Stan WilsonRobert C. EsselsteinWayne E. CornishMark T. Richardson
    • W. Stan WilsonRobert C. EsselsteinWayne E. CornishMark T. Richardson
    • A61M2500
    • A61M25/09A61M2025/09083A61M2025/09133
    • The invention is directed to an guide wire for intraluminal deployment of a medical device within a patient, the guide wire having an elongate core member with an intermediate core section comprising a plurality of contiguous segments in alignment with the longitudinal axis of the core member with alternating flexible and rigid core segments, so that the articulated section bends in a discontinuous, discrete manner when advanced through a curved blood vessel or other body lumen within the patient. When an obstruction on a vessel wall causes the catheter or other coaxial device to be impeded, the guide wire and intermediate core section may alternately be advanced and retracted a short distance through the catheter distal tip causing a “nodding” motion of the catheter tip while the catheter is pushed through the vessel, so as to avoid and bypass the vessel obstruction.
    • 本发明涉及一种用于在患者体内腔内部署医疗装置的导丝,所述导丝具有细长的芯部件,所述细长的芯部件具有中间的芯部分,所述中间纤芯部分包括与所述芯部件的纵向轴线对准的多个连续部分, 柔性和刚性的芯段,使得铰接部分在通过患者体内的弯曲血管或其他体腔前进时以不连续的离散方式弯曲。 当血管壁上的阻塞物导致导管或其它同轴装置被阻碍时,引导线和中间芯部分可以交替地前进并缩回穿过导管远端的短距离,导致导管末端的“点头”运动,同时 导管被推过血管,以避免和绕过血管阻塞。