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    • 5. 发明公开
    • Hydrogels that undergo volumetric expansion in response to changes in their environment and their methods of manufacture and use
    • 水凝胶,其在环境条件下,生产方法的变化膨胀和使用为水凝胶。
    • EP2308431A1
    • 2011-04-13
    • EP10188630.7
    • 2002-02-28
    • Microvention, Inc.
    • Cruise, Gregory M.Constant, Michael J.
    • A61F13/00A61F2/00A61K9/70A61K9/14A61K31/74
    • C08F22/385A61K9/0024A61K49/0457A61L31/145
    • Hydrogels that expand volumetrically in response to a change in their environment (e.g., a change in pH or temperature) and their methods of manufacture and use. Generally, the hydrogels are prepared by forming a liquid reaction mixture that contains a) monomer(s) and/or polymer(s) at least portion(s) of which are sensitive to environmental changes (e.g., changes in pH or temperature), b) a crosslinker and c) a polymerization initiator. If desired, a porosigen may be incorporated into the liquid reaction mixture to create pores. After the hydrogel is formed, the porosigen is removed to create pores in the hydrogel. The hydrogel may also be treated to cause it to assume a non-expanded volume in which it remains until a change in its environment causes it to expand. These hydrogels may be prepared in many forms including pellets, filaments, and particles. Biomedical uses of these hydrogels include applications wherein the hydrogel is implanted in the body of a patient and an environmental condition at the implantation site causes the hydrogel to expand it situ.
    • 水凝胶也响应于环境的变化体积膨胀及其(E. G.,pH或温度的变化)和它们的制造和使用方法。 通常,水凝胶通过形成液体反应混合物制备确实含有:a)单体(多种)和/或聚合物(S)的至少部分(一个或多个),其中对环境的变化敏感(例如,pH或温度的变化) b)交联剂和c)聚合引发剂。 如果需要清除,成孔可以被并入液体反应混合物以产生孔隙。 水凝胶形成后,孔剂去除以创建水凝胶毛孔。 因此,水凝胶进行处理,以使其承担非膨胀体积在它保持,直到在其环境中的变化会发生膨胀。 这些水凝胶可以以许多形式,包括小球,细丝,和粒子来制备。 合成水凝胶生物医学用途包括worin的水凝胶在患者体内,并在植入部位的环境条件植入应用使得水凝胶将其展开原位。