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    • 1. 发明申请
    • Composite stent with inner and outer stent elements and method of using the same
    • 具有内外支架元件的复合支架及其使用方法
    • US20050113904A1
    • 2005-05-26
    • US10720176
    • 2003-11-25
    • Peter ShankF. Headley
    • Peter ShankF. Headley
    • A61F2/00A61F2/86A61F2/06
    • A61F2/86A61F2/07A61F2/90A61F2002/075A61F2220/0016A61F2220/005A61F2220/0066A61F2220/0075A61F2230/0078A61F2250/0067
    • A composite stent structure includes separate and distinct stent elements or members: an outer stent element and an inner stent element removably attached to the outer stent element. The outer element may be, for example, a bioabsorbable stent typically constructed of a relatively non-resilient material such that the outer bioabsorbable stent element may not be self-expanding and subject to migration within the lumen over time. In contrast, the inner element may be, for example, a removable SEMS used to urge and maintain the outer element in position in the body lumen. The temporary inner SEMS may retain the composite structure (including the underlying inner element) in position until such time as the outer element is appropriately incorporated into the surrounding tissue or some other criteria occurs such that the removal of the SEMS is indicated. The SEMS may then be detached from the outer element and removed from the body lumen.
    • 复合支架结构包括分开且不同的支架元件或构件:外支架元件和可移除地附接到外支架元件的内支架元件。 外部元件可以是例如通常由相对非弹性材料构成的生物可吸收支架,使得外部生物可吸收支架元件可能不会自我扩张并且随着时间内在腔内迁移。 相反,内部元件可以是例如用于将外部元件推动并保持在体腔内的适当位置的可移除的SEMS。 临时内部SEMS可以将复合结构(包括下面的内部元件)保持在适当位置,直到外部元件适当地结合到周围组织中或者出现一些其它标准,以便指出移除SEMS。 然后可以将SEMS从外部元件分离并从体腔中移出。