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    • 95. 发明授权
    • Removable stent-graft
    • 可移植支架移植物
    • US08556956B2
    • 2013-10-15
    • US12621055
    • 2009-11-18
    • Edward H. CullyWoodrow W. Watson
    • Edward H. CullyWoodrow W. Watson
    • A61F2/06
    • A61F2/07A61B2017/22035A61F2/848A61F2/88A61F2/89A61F2002/072A61F2002/075A61F2002/9528A61F2220/005A61F2250/0071
    • A removable device such as a stent-graft, intended for applications where it may be desirable to remove the device at some time following implantation. The stent-graft of the present invention includes a helically-wound stent component provided with a covering of graft material. It is removable by gripping an end of the helically-wound stent component with a retrieval device and applying tension to the stent component in the direction in which it is intended to be withdrawn from the site of implantation. The use of such a retrieval device allows the stent-graft to be removed remotely, such as via a catheter inserted into the body at a different location from the implantation site. The design of the stent-graft is such that the stent component is extended axially while the adjacent portion of the graft separates between windings of the stent component. The axial extension of the stent component, with portions of the graft still joined to the stent component, allows the device to be “unraveled” (or “unwound”) and removed through a catheter of diameter adequately small to be inserted into the body cavity that contained the stent-graft. It is removed atraumatically, without incurring significant trauma to the body conduit in which it had been deployed.
    • 诸如支架移植物的可移除装置,其用于在植入后的某个时间可能需要移除装置的应用。 本发明的支架移植物包括设置有移植材料覆盖物的螺旋缠绕的支架组件。 通过用拾取装置抓住螺旋缠绕的支架部件的一端并​​且沿着其将要从植入部位取出的方向对支架部件施加张力,其可移除。 使用这种检索装置允许远程地移除支架移植物,例如通过在与植入部位不同的位置插入体内的导管。 支架移植物的设计使得支架部件沿轴向延伸,而移植物的相邻部分在支架部件的绕组之间分离。 支架部件的轴向延伸,其中移植物的一部分仍然连接到支架部件,允许装置“解开”(或“展开”)并通过足够小的直径的导管移除以插入体腔 包含支架移植物。 它无创伤地去除,而不会对其部署的身体导管造成重大创伤。