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    • 10. 发明申请
    • Balloon geometry for delivery and deployment of shape memory polymer stent with flares
    • 气球几何形状记录聚合物支架的交付和部署与耀斑
    • US20080132988A1
    • 2008-06-05
    • US11607611
    • 2006-12-01
    • Gary Jordan
    • Gary Jordan
    • A61F2/06
    • A61M25/1002A61F2/88A61F2/958A61F2250/0039A61L31/04A61L31/14A61L2400/16A61M2025/1086
    • A balloon geometry is utilized herein where the balloon is inflatable from an initial unexpanded state to an expanded state. The balloon includes first and second portions; the first portion having a first diameter with the balloon being in the expanded state, the second portion having a second diameter with the balloon being in the expanded state, the first diameter being different from the second diameter. With a stent being mounted onto the balloon, expansion of the balloon results in the first portion of the balloon assisting a first portion of the stent to radially expand more than a second portion of the stent located adjacent to the second portion of the balloon. Preferably, the stent is formed of shape memory polymer. With the subject invention, one or both ends of the stent can be formed with larger diameters, or flares, in vivo at the point of implantation. The flared ends provide engagement points for the stent to a surrounding bodily passageway. Although the balloon may have various applications, it is particularly well-suited for use with shape memory polymer stents, which can be expanded and deformed in vivo.
    • 这里使用气球几何形状,其中气囊从初始未膨胀状态可膨胀到膨胀状态。 气囊包括第一和第二部分; 所述第一部分具有第一直径,所述球囊处于展开状态,所述第二部分具有第二直径,所述球囊处于展开状态,所述第一直径不同于所述第二直径。 通过将支架安装到球囊上,球囊的膨胀导致球囊的第一部分帮助支架的第一部分径向扩张位于邻近气囊第二部分的支架的第二部分。 优选地,支架由形状记忆聚合物形成。 对于本发明,支架的一端或两端可以在植入点的体内形成较大直径或耀斑。 扩口的端部为支架提供与周围身体通道的接合点。 虽然球囊可以具有各种应用,但是特别适用于能够在体内膨胀和变形的形状记忆聚合物支架。