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    • 5. 发明申请
    • LUMBAR DRAINAGE CATHETER
    • LUMBAR排水管
    • WO0113984A2
    • 2001-03-01
    • PCT/US0040736
    • 2000-08-24
    • NEURON THERAPEUTICS INCGUNASEKARA INDAKAGRIFFIN MARKFRAZER GLENN
    • GUNASEKARA INDAKAGRIFFIN MARKFRAZER GLENN
    • A61M1/00A61M25/00A61M25/02A61M27/00
    • A61M25/007A61M25/0045A61M25/02
    • This is a catheter assembly designed for accessing the cerebrospinal fluid circulation system and draining fluid therefrom. The polymeric thin-walled catheter has a soft, flexible distal region for minimizing trauma to tissue and angularly accessing the subarachnoid space in the cerebrospinal fluid pathway with an optional guidewire. A stiffer proximal region, which may optionally contain a reinforcing woven braid or coil ensures that the catheter does not kink or compress during use in the tough membranes around the spinal column. One or more apertures in the catheter wall for draining fluid proximally through the catheter central lumen allows for transport of fluid through the catheter at therapeutic flow rates and pressures. A soft polymeric plug that may be disposed in the distal end of the catheter assembly ensure minimal trauma to tissue upon entry. The entire catheter may be coated with hydrophilic coating to facilitate movement through an optional Touhy needle and tissue, and may be radio-opaque for greater visibility under fluoroscopy.
    • 这是一种设计用于进入脑脊液循环系统并从其排出液体的导管组件。 聚合物薄壁导管具有柔软的柔性远端区域,用于使用组织的创伤最小化,并用可选择的导丝角度地访问脑脊液通路中的蛛网膜下腔。 可以任选地包含加强编织编织物或线圈的较硬的近端区域确保导管在使用期间在脊柱周围的韧性膜中不会扭结或压缩。 在导管壁中用于将流体向近端排出通过导管中心腔的一个或多个孔允许流体以治疗流速和压力输送通过导管。 可以设置在导管组件的远端中的软聚合物塞确保进入时对组织的最小创伤。 整个导管可以涂覆有亲水性涂层,以促进通过可选的Touhy针和组织的移动,并且可以是不透射线的以在荧光透视下更好的可视性。
    • 10. 发明申请
    • RETROGRADE-ANTEGRADE CATHETERIZATION GUIDE WIRE
    • 重新安装导管导线
    • WO1998005376A1
    • 1998-02-12
    • PCT/US1997013511
    • 1997-07-31
    • COOK INCORPORATEDCOPE, ConstantinGRIFFIN, Mark, A.
    • COOK INCORPORATED
    • A61M25/09
    • A61M25/0152A61M25/09A61M2025/09083
    • An catheterization apparatus (10) for reversing the retrograde or antegrade direction of catheterization includes a guide wire (12) foldable upon itself for partial introduction into a vessel (68) of a patient. The guide wire (12) first includes a resilient, elongated member (14) having a curved end (16) and a remainder (17) having a second, bent end (18). The guide wire (12) also includes a flexible tether (22) connected to the tip (20) of the curved end (16) of the elongated member (14). The elongated member (14) is preferably formed from a wire core or mandrel (24) covered by a continuous coiled wire (30). The catheterization apparatus (10) preferably further includes a catheter through which the guide wire (12) is introduced into the vessel (68). The catheter can be of conventional construction and operability. Preferably, however, the catheter is a highly flexible and relatively short intermediary catheter (56), employed only temporarily during use of the retrograde-antegrade guide wire (12). The catheterization apparatus (10) can also include an inserter sheath (60) engageable with the catheter (56) to facilitate passage of the guide wire (12) through the catheter (56). The apparatus (10) is particularly advantageous in that its use avoids the need to establish a second access site. Moreover, the apparatus (10) is relatively simple and reliable in construction and use, and is relatively low in cost, at least in comparison to the costs and risks of the establishment of a second access site. The apparatus (10) is a traumatic during use, that is, it does not significantly damage the blood vessel or other vessel during reversal of the direction of catheterization. The apparatus (10) is useful in vessels of both large and small diameters, and facilitates the selective engagement of a catheter with a bifurcation branch in a vessel.
    • 用于反转导尿术的逆行或顺行方向的导管插入装置(10)包括可自行折叠的引导线(12),用于部分引入患者的血管(68)。 导丝(12)首先包括具有弯曲端(16)的弹性细长构件(14)和具有第二弯曲端(18)的其余部分(17)。 引导线(12)还包括连接到细长构件(14)的弯曲端(16)的尖端(20)的柔性系绳(22)。 细长构件(14)优选地由被连续卷绕的线(30)覆盖的线芯或心轴(24)形成。 导管装置(10)优选地还包括导管(12)通过该导管引入容器(68)中。 导管可以具有常规的结构和可操作性。 然而,优选地,导管是高度柔性且相对较短的中间导管(56),其仅在逆行顺行导丝(12)的使用期间临时使用。 导管装置(10)还可以包括可与导管(56)接合的插入器护套(60),以便于引导线(12)通过导管(56)的通过。 装置(10)的特别有利之处在于,其使用避免了建立第二进入站点的需要。 此外,装置(10)的构造和使用相对简单可靠,并且成本相对较低,至少与建立第二进入站点的成本和风险相比较。 装置(10)在使用过程中是创伤性的,即在反向导管插入方向期间它不会显着损伤血管或其他容器。 该设备(10)可用于大直径和小直径的容器中,并且便于将导管与容器中的分叉支路选择性地接合。