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    • 5. 发明授权
    • Guidewire with an improved flexural rigidity profile
    • 导丝具有改进的抗弯刚度分布
    • US08551021B2
    • 2013-10-08
    • US13077579
    • 2011-03-31
    • Virgil F. VoellerClay NorthropTed Layman
    • Virgil F. VoellerClay NorthropTed Layman
    • A61B5/00
    • A61M25/0054A61M25/0013A61M25/09A61M2025/09091A61M2025/09108A61M2025/0915
    • Medical devices and methods for making and using the same are disclosed. An example medical device may include a guidewire. The guidewire may include a core wire having a distal portion. A tubular member may be disposed over the distal portion. The tubular member may have a plurality of slots formed therein and may have a longitudinal axis. The tubular member may include a variably spaced slot section that has a flexural rigidity that varies from a first flexural rigidity to a second flexural rigidity. The transition from the first flexural rigidity to the second flexural rigidity may be a function of a fourth power equation. The first flexural rigidity may be in the range of about 1×10−6 to about 9×10−5 lbs-inches2. The second flexural rigidity may be in the range of about 1×10−3 to about 5×10−3 lbs-inches2.
    • 公开了用于制造和使用它们的医疗装置和方法。 示例性医疗设备可以包括导丝。 导线可以包括具有远端部分的芯线。 管状构件可以设置在远侧部分上方。 管状构件可以具有形成在其中的多个狭槽,并且可以具有纵向轴线。 管状构件可以包括可变地间隔开的槽部,其具有从第一弯曲刚度变化到第二弯曲刚度的挠曲刚度。 从第一弯曲刚度到第二弯曲刚度的转变可以是第四功率方程式的函数。 第一弯曲刚度可以在约1×10-6至约9×10-5磅/英寸2的范围内。 第二弯曲刚度可以在约1×10-3至5×10-3磅/英寸2的范围内。