Bioerodible polyanhydrides for controlled drug delivery
    7.
    发明授权
    Bioerodible polyanhydrides for controlled drug delivery 失效
    用于受控药物递送的生物可腐蚀的聚酐

    公开(公告)号:US4891225A

    公开(公告)日:1990-01-02

    申请号:US820290

    申请日:1986-01-21

    摘要: A novel hydrophobic polymeric matrix is provided which is suitable for use after implantation in vivo in a subject for the controlled release and delivery of biologically active substances such as drugs, antibiotics, steroids and the like. Alternatively, the matrix can be used outside the body for release of fragrances, pesticides and the like. The implantable matrix comprises a polymeric polyanhydride formulation whose internal anhydride linkages are hydrolytic in nature in varying degrees in accordance with the chemical composition of the backbone, pH and temperature of the environment. As the individual anhydride linkages become hydrolyzed, the matrix erodes predominantly by surface erosion into non-toxic biocompatible degradation products with concomitant release of the biologically active substance.

    摘要翻译: 提供了一种新颖的疏水性聚合物基质,其适用于受试者体内植入后用于生物活性物质如药物,抗生素,类固醇等的控制释放和递送。 或者,可以在体外使用基质以释放香料,农药等。 可植入基质包含聚合多酸酐制剂,其内酸酐键根据骨架的化学组成,pH和环境温度在不同程度上水解。 当单个酸酐键变得水解时,基质主要通过表面侵蚀侵蚀成无毒的生物相容性降解产物,同时释放生物活性物质。