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    • 28. 发明授权
    • Introducer with vascular sealing mechanism
    • 导管与血管密封机制
    • US6110184A
    • 2000-08-29
    • US366900
    • 1999-08-04
    • Kevin S. Weadock
    • Kevin S. Weadock
    • A61B17/00A61B17/04
    • A61B17/0057A61B2017/00637A61B2017/00654A61B2017/00672
    • An introducer for use in interventional vascular procedures having a sealing mechanism for closure of a puncture site is disclosed. The introducer has a vessel-engaging component and a sealing component thereon. The vessel-engaging component comprises an elongated filament engaged within a channel in the wall of the introducer. The filament has an expandable part that is changeable from a first configuration to a second, expanded configuration. When the distal end of the introducer is inserted into the lumen of a blood vessel, the expandable part may be inflated. Pulling the introducer through the puncture in a direction opposite the vessel then causes the expandable member to be engaged on the vessel wall at the location of the puncture to provide resistance in pulling the introducer away from the blood vessel. In this way, the vessel-engaging component locates the puncture site. The sealing component comprises an applicator and a plurality of rings comprised of thrombogenic materials such as collagen on the wall of the introducer. The applicator is used to position the rings at the puncture site once it is located with the vessel-engaging component.
    • 公开了一种用于介入血管手术的导引器,其具有用于封闭穿刺部位的密封机构。 引导器在其上具有容器接合部件和密封部件。 容器接合部件包括细长的细丝,其接合在引导器的壁中的通道内。 灯丝具有可从第一配置改变到第二扩展配置的可扩展部件。 当导引器的远端插入血管的内腔时,可膨胀部分可以被充气。 通过与容器相反的方向穿过穿刺引导器,然后使得可扩张构件在穿刺位置处接合在血管壁上,以在将引导器拉离血管时提供阻力。 以这种方式,容器接合部件定位穿刺部位。 密封部件包括施用器和由引导器的壁上的血栓形成材料(例如胶原)组成的多个环。 一旦它与容器接合部件定位,则施用器用于将环定位在穿刺部位。