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    • 10. 发明授权
    • Flow-directed catheter system and method of use
    • 导流导管系统及使用方法
    • US06221059B1
    • 2001-04-24
    • US09295209
    • 1999-04-21
    • Andrew ChiangMark E. Deem
    • Andrew ChiangMark E. Deem
    • A61M500
    • A61M25/0021A61M25/0054A61M25/0108A61M25/0125A61M25/0662A61M2025/0098
    • A flow-directed catheter comprises a catheter body having a relatively rigid proximal body segment and a relatively flexible, supple distal body segment. The distal body segment may have a reduced diameter relative to the proximal body segment, at least at its distal tip. Radiopaque markers are provided at the transition between the two body segments and at the tip of the catheter. The radiopaque markers are preferably recessed entirely within the catheter body. Optionally, the distal body segment may have surface irregularities which enhance the ability of the distal body segment to follow blood flow. A flow-directed catheter system comprises the catheter in combination with a coaxial sheath to selectively strengthen at least the proximal of the distal body segment. The catheter may be used for a variety of diagnostic and/or therapeutic procedures.
    • 导流导管包括具有相对刚性的近端主体段和相对柔性的柔软的远端主体段的导管本体。 至少在其远端处,远侧主体段可相对于近端主体段具有减小的直径。 在两个主体段之间和导管末端处的过渡处提供不透射线的标记。 不透射线的标记物优选地完全在导管主体内凹入。 任选地,远侧主体段可具有增强远侧主体段跟随血液流动的能力的表面不规则。 导向导管系统包括与同轴护套组合的导管,以选择性地加强至少远端本体段的近端。 导管可用于各种诊断和/或治疗过程。