RADIALLY EXPANDING PROSTHESES AND SYSTEMS FOR THEIR DEPLOYMENT
    53.
    发明申请
    RADIALLY EXPANDING PROSTHESES AND SYSTEMS FOR THEIR DEPLOYMENT 审中-公开
    放射性地扩展其部署的前景和系统

    公开(公告)号:WO1998011847A1

    公开(公告)日:1998-03-26

    申请号:PCT/US1997016737

    申请日:1997-09-19

    IPC分类号: A61F02/06

    摘要: A resilient graft construction incorporates a structural layer (38) formed of a resilient body compatible metal or polymer, and a fluid impervious layer of graft material (40) secured to the structural layer. The structural layer includes an elongate longitudinal primary section (42), and secondary sections (46) extended transversely from opposie sides of the primary section (42). The secondary sections (46) can be arranged in opposed pairs, or staggered. The secondary sections (46) further can be tapered in width, thickness or both. The grafts can be constructed by stamping or otherwise severing structural layer patterns from a flat sheet of structural material, then thermally setting the structural layers when they are wrapped about a mandril to determine a relaxed state curvature. Opposed longitudinal edges either can overlap one another or be spaced apart from one another in the relaxed state. According to one alternative, the structural layer (38) alone functions as a stent. Other alternatives include circumferentially closed graft structures, one of which consists of a resilient graft material.

    摘要翻译: 弹性移植物结构包括由弹性体相容的金属或聚合物形成的结构层(38)和固定到结构层的移植材料(40)的流体不可渗透层。 结构层包括细长纵向初级部分(42),并且从初级部分(42)的相对侧横向延伸的次级部分(46)。 次级部分46可以相对设置或交错布置。 次级部分(46)还可以在宽度,厚度或两者上锥形化。 移植物可以通过冲压或以其他方式从平板结构材料切断结构层图案,然后在将结构层缠绕在心轴周围热定形以确定松弛状态曲率时构造。 相对的纵向边缘可以在松弛状态下彼此重叠或彼此间隔开。 根据一个替代方案,结构层(38)单独用作支架。 其它替代方案包括周向封闭的移植物结构,其中一个由弹性移植材料组成。