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    • 6. 发明授权
    • Guidewire
    • 导丝
    • US08608670B2
    • 2013-12-17
    • US12977121
    • 2010-12-23
    • Satoru MatsumotoMasayuki Takahashi
    • Satoru MatsumotoMasayuki Takahashi
    • A61B5/00
    • A61M25/09A61M2025/09083A61M2025/09133A61M2025/09175
    • An object of the present invention is to provide a guidewire having high safety and improved flexibility and rotation followability, and capable of directing a catheter with ease. A guidewire of the present invention has an inner coil that surrounds a distal side portion of a core shaft, and an outer coil that surrounds the inner coil and the distal side portion of the core shaft. The core shaft has a second flat part in flattened shape in substantially contact with an inner peripheral surface of the inner coil. With this configuration, the distal side portion of the guidewire is protected by a double coil structure, while having high torsional stiffness. This leads to improvement in safety and rotation followability, while allowing a catheter to be directed with ease.
    • 本发明的目的是提供一种具有高安全性和改进的柔性和旋转跟随性的导丝,并且能够容易地引导导管。 本发明的导线具有围绕芯轴的前端部的内侧线圈和围绕芯轴的内侧线圈和前端侧部的外侧线圈。 芯轴具有与内圈的内周面基本接触的扁平形状的第二扁平部。 利用这种构造,导丝的远侧部分被双线圈结构保护,同时具有高的扭转刚度。 这导致安全性和旋转跟随性的改善,同时容易地引导导管。