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    • 10. 发明申请
    • MEDICAL CATHETER WITH BUMP TUBING PROXIMAL SEGMENT
    • 医用导管与保护管接头部分
    • WO2014074117A1
    • 2014-05-15
    • PCT/US2012/064633
    • 2012-11-12
    • TERUMO MEDICAL CORPORATIONKRONFELD, Alex, M.NORTON, Derek, L.YOUNG, Robin, M.
    • KRONFELD, Alex, M.NORTON, Derek, L.YOUNG, Robin, M.
    • A61M25/00
    • A61M25/0054A61M25/0067A61M25/008A61M25/0108A61M2025/0059
    • A medical catheter (10) for inserting into a body includes a bump tubing section with proximal and distal ends, wherein the proximal end is configured to mate with a hub. The bump tubing section has an intermediate portion (22) extending away from the proximal end (21) with a substantially constant outer diameter and thickness, and a taper portion (23) adjacent the distal end with generally decreasing inside and outside diameters to provide a gradually increasing flexibility toward the distal end of the bump tubing section. The bump tubing section is comprised of a polymer having a predetermined flexural modulus. A tip section is (24) disposed distally of the distal end of the bump tubing section comprising a distal liner (30) and a distal cover (31) such that at least a majority of the tip section has a substantially constant stiffness and a flexural modulus substantially equal to or greater than the predetermined flexural modulus.
    • 用于插入到主体中的医用导管(10)包括具有近端和远端的凸块管段,其中所述近端构造成与毂配合。 所述凸块管段具有中间部分(22),所述中间部分(22)具有基本上恒定的外径和厚度的近端(21)延伸,以及与所述远端相邻的锥形部分(23),所述锥形部分(23)具有大体上减小的内径和外径, 逐渐增加朝向凸块管段远端的柔性。 凸块管段由具有预定挠曲模量的聚合物构成。 尖端部分(24)设置在凸起管部分的远端的远侧,包括远侧衬套(30)和远侧盖(31),使得尖端部分的至少大部分具有基本上恒定的刚度和弯曲 模量基本上等于或大于预定弯曲模量。