Biodegradable endovascular stent using stereocomplexation of polymers
    7.
    发明申请
    Biodegradable endovascular stent using stereocomplexation of polymers 审中-公开
    使用聚合物立体络合的可生物降解的血管内支架

    公开(公告)号:US20070043434A1

    公开(公告)日:2007-02-22

    申请号:US11206161

    申请日:2005-08-18

    IPC分类号: A61F2/06

    摘要: A biodegradable stent is comprised of a stereocomplex of polylactide enantiomers. The unique characteristics of stereocomplex polymers allows for the stent to have variable material characteristics along its length, while retaining uniform geometry. Thus, the stent is designed to be flexible upon insertion through the blood vessels while still retaining its rigidity and support upon expansion within the vessel. Furthermore, the material characteristics can be manipulated such that high strengths are possible even with small thicknesses of struts within the stent.

    摘要翻译: 可生物降解的支架由聚丙交酯对映体的立体络合物组成。 立体络合物聚合物的独特特征允许支架沿其长度具有可变的材料特性,同时保持均匀的几何形状。 因此,支架被设计成在插入通过血管时是柔性的,同时在容器内膨胀时仍然保持其刚性和支撑。 此外,可以操纵材料特性,使得即使在支架内具有小厚度的支柱也可以实现高强度。

    Soft polylactides
    8.
    发明申请
    Soft polylactides 失效
    柔性聚交酯

    公开(公告)号:US20070036855A1

    公开(公告)日:2007-02-15

    申请号:US11335138

    申请日:2006-01-19

    IPC分类号: A61K9/22 A61K9/14

    摘要: Biodegradable polymeric compositions that are liquids or pastes at temperatures below 37° C. are described. Immersion of the compositions in aqueous medium, such as body fluids, increases the viscosity of the composition resulting in the formation of a semisolid material. The polymeric material is a hydroxyalkanoic acid polyester derived from the copolymerization of at least one unsaturated hydroxy fatty acid copolymerized with hydroxyalkanoic acids of 2-6 carbons.

    摘要翻译: 描述了在37℃以下的液体或糊状物的可生物分解的聚合物组合物。 组合物在水性介质(例如体液)中的浸渍增加了组合物的粘度,从而形成半固体材料。 聚合物材料是由至少一种与2-6个碳原子的羟基链烷酸共聚的不饱和羟基脂肪酸的共聚得到的羟基链烷酸聚酯。