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    • 5. 发明授权
    • Reinforced multiple lumen catheter
    • 加强多腔导管
    • US5190520A
    • 1993-03-02
    • US595028
    • 1990-10-10
    • Paul V. Fenton, Jr.William J. GormanThomas M. Young
    • Paul V. Fenton, Jr.William J. GormanThomas M. Young
    • A61M25/00
    • A61M25/005
    • Disclosed is a flexible, reinforced, multiple lumen catheter. This catheter includes an elongated, flexible, tubular element extending about a central axis, and including embedded therein at least one filament extending in a helical path about the central axis. The inner surface of the tubular element defines an interior region. The catheter also includes an elongated divider element having elongated lateral edges. These edges are integral with, and extending from, portions of the inner surface of the tubular element. At least two lumens are defined in the interior region of the tubular element on opposing sides of the divider element. Also disclosed is a method for assembling the flexible, reinforced, multiple lumen catheter.
    • 公开了一种柔性,增强的多腔导管。 该导管包括围绕中心轴线延伸的细长的,柔性的管状元件,并且包括在其中嵌入有围绕中心轴线以螺旋状路径延伸的至少一根细丝。 管状元件的内表面限定内部区域。 导管还包括具有细长侧向边缘的细长分隔元件。 这些边缘与管状元件的内表面的一部分成一体并且从其延伸。 在分隔元件的相对侧上的管状元件的内部区域中限定至少两个流明。 还公开了一种用于组装柔性,增强的多腔导管的方法。
    • 6. 发明授权
    • Bidirectional check valve catheter
    • 双向止回阀导管
    • US5112301A
    • 1992-05-12
    • US717618
    • 1991-06-19
    • Paul V. Fenton, Jr.Thomas M. YoungWilliam J. Gorman
    • Paul V. Fenton, Jr.Thomas M. YoungWilliam J. Gorman
    • A61M39/00A61M1/00A61M25/00
    • A61M25/0075A61M1/008A61M2025/0076A61M39/0247
    • A valved catheter is disclosed having an elongated, flexible tubular element defining a lumen extending along an axis substantially parallel to the central axis of the tubular element, and a bidirectional check valve assembly near its distal end which controls fluid flow in the tubular element. The valve assembly includes an aspiration valve offset from the tip of the distal end and an infusion valve formed at the tip of the distal end. The aspiration valve is generally defined by port(s) in the tubular element and a sleeve within the element underlying the ports, where the sleeve normally closes the ports. The aspiration valve permits fluid flow from the bloodstream into the element when the static fluid pressure inside the distal end is lower than the static fluid pressure outside the aspiration valve by an amount sufficient to displace the sleeve to allow fluid flow through the ports. The infusion valve includes a throat formed in the distal end which tapers down to a mouth formed by jaws at the tip. The mouth is essentially closed to fluid inflow from the patient into the tubular element and normally closed to fluid outflow from the tubular element into the patient. The infusion valve permits fluid infusion into the bloodstream when the static fluid pressure inside of the tubular element sidtal end is higher than the static fluid pressure outside of the infusion valve by an amount sufficient to force the mouth open. A bidirectionally valved multiple lumen catheter is also disclosed.
    • 公开了一种带阀的导管,其具有限定沿着基本上平行于管状元件的中心轴线的轴延伸的内腔的细长的柔性管状元件,以及在其远端附近的双向止回阀组件,其控制管状元件中的流体流动。 阀组件包括从远端的尖端偏移的吸入阀和形成在远端的尖端处的输注阀。 抽吸阀通常由管状元件中的端口和位于端口下方的元件内的套筒限定,其中套筒通常关闭端口。 当远端内的静态流体压力低于抽吸阀外部的静态流体压力时,抽吸阀允许流体从血流流入元件,其量足以移动套筒以允许流体流过端口。 输注阀包括形成在远端的喉部,该喉部由尖端处的钳口形成为口。 嘴部基本上封闭于从患者流入管状元件的流体,并且通常关闭流体从管状元件流入患者体内。 当管状元件侧端内部的静态流体压力高于输注阀外部的静态流体压力足以使嘴部打开时,输液阀允许流体输注到血流中。 还公开了双向阀多腔导管。