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    • 8. 发明申请
    • Thermally reversible implant
    • 热可逆植入
    • US20070110784A1
    • 2007-05-17
    • US10555455
    • 2004-05-03
    • Yu-Ling ChengMichael MayJohn SempleHai-Hui Lin
    • Yu-Ling ChengMichael MayJohn SempleHai-Hui Lin
    • A61F2/02A61K8/73A61K8/81
    • A61F2/0059
    • The invention relates to the use of a thermal reversible gel, such as a copolymer composition, as a biological filler or implant. The gel has a semi-solid form at body temperature, but upon cooling to a temperature below a threshold level, the gel is liquefied and can be re-shaped, re-sized, manipulated or removed from the body. The gel may be used as a subcutaneous implant, a biological filler, joint or tissue spacer, for wrinkle filling or other cosmetic implants, as a soft-tissue replacement for reconstructive surgery, or as a barrier within the lumen of a biological structure, such as a blood vessel. The implant may be used to provide reversible birth control by providing, for example, a reversible barrier to the cervix or a reversible blockage of the lumen of the vas deferens.
    • 本发明涉及热可逆凝胶如共聚物组合物作为生物填料或植入物的用途。 凝胶在体温下具有半固体形式,但是当冷却到低于阈值水平时,凝胶被液化,并且可以重新成形,重新调整尺寸,操作或从身体去除。 凝胶可以用作皮肤植入物,生物填充剂,关节或组织间隔物,用于皱纹填充或其它化妆品植入物,作为用于重建手术的软组织替代物,或作为生物结构内腔内的屏障,例如 作为血管。 植入物可用于通过提供例如子宫颈的可逆屏障或输精管腔的可逆阻塞来提供可逆的节育。
    • 10. 发明授权
    • Process for preparing interpenetrating polymer networks of controlled morphology
    • 制备控制形态的互穿聚合物网络的方法
    • US06331578B1
    • 2001-12-18
    • US09442830
    • 1999-11-17
    • Josephine TurnerYu-Ling Cheng
    • Josephine TurnerYu-Ling Cheng
    • C08J716
    • C08J3/246C08F283/12C08G77/442Y10S525/903C08F220/06
    • The invention relates to a method of making an interpenetrating polymer network (IPN) of at least a first polymer and a second polymer from a first and second component wherein the first component is the first polymer, or a polymerizable reactant selected from monomers or pre-polymers polymerizable to the first polymer and mixtures thereof, and the second component is a polymerizable reactant selected from monomers or pre-polymers polymerizable to the second polymer and mixtures thereof, the method comprising the steps of forming a reaction mixture of at least the first component, the second component, an initiator or catalyst and a crosslinker, effecting polymerization and crosslinking of polymerizable reactant, and recovering the IPN so obtained, wherein during the polymerization and crosslinking, a surface of the reaction mixture is maintained in contact with a third component comprising each said polymerizable reactant at a chemical potential similar to the chemical potential of the same reactant in the reaction mixture.
    • 本发明涉及一种从第一和第二组分制备至少第一聚合物和第二聚合物的互穿聚合物网络(IPN)的方法,其中第一组分是第一聚合物,或可选择的单体或预聚物的可聚合反应物, 可聚合到第一聚合物的聚合物及其混合物,第二组分是选自可聚合到第二聚合物的单体或预聚物及其混合物的可聚合反应物,该方法包括以下步骤:形成至少第一组分, 第二组分,引发剂或催化剂和交联剂,进行可聚合反应物的聚合和交联,并回收如此获得的IPN,其中在聚合和交联期间,反应混合物的表面保持与包含每个 所述可聚合反应物具有类似于s的化学势的化学势 在反应混合物中的反应物。