Poly(organophosphazene) matrices for bone replacement
    1.
    发明授权
    Poly(organophosphazene) matrices for bone replacement 失效
    用于骨置换的聚(有机膦腈)基质

    公开(公告)号:US06235061B1

    公开(公告)日:2001-05-22

    申请号:US08222662

    申请日:1994-04-04

    IPC分类号: A61F228

    摘要: A highly porous three-dimensional biodegradable poly(organophosphazene) matrix with hydrolytically unstable side chains is prepared and used as a scaffold for the growth of osteoblast cells. In a preferred embodiment, the poly(organophosphazene) includes between 10 and 90% hydrolytically unstable side chains including glucosyl, glyceryl, glyceryl, imidazolyl or ethoxy units, for example, poly[(methylphenoxy)(ethyl glycinato) phosphazene]. The addition of the glucosyl, glycinyl or glyceryl side chains to the polymer can also be used generally to enhance growth rates of cells adhered to the polymer, presumably through uptake and metabolism of the simple sugar or alcohol units.

    摘要翻译: 制备具有水解不稳定侧链的高度多孔的三维可生物降解的聚(有机膦腈)基质,并用作成骨细胞生长的支架。 在优选的实施方案中,聚(有机膦腈)包括10-90%水解不稳定的侧链,包括葡糖基,甘油基,甘油基,咪唑基或乙氧基单元,例如聚[(甲基苯氧基)(乙基甘氨酸)磷腈]。 甘油基,甘氨酰或甘油侧链加入到聚合物中通常也可用于增强附着于聚合物上的细胞的生长速度,这可能是通过单糖或醇单元的摄取和代谢。

    Poly (organophosphazene) hydrogels
    2.
    发明授权
    Poly (organophosphazene) hydrogels 失效
    聚(有机膦腈)水凝胶

    公开(公告)号:US5898062A

    公开(公告)日:1999-04-27

    申请号:US833868

    申请日:1997-04-10

    IPC分类号: C08G79/02

    CPC分类号: C08G79/025

    摘要: Poly (organophosphazene) polymers bearing various ratios of a carboxylic acid containing sidegroup and an alkylamino, alkoxy, or alkoxy ether sidegroup are disclosed. These water-soluble macromolecules are cross-linked and allowed to absorb water to form hydrogels. Because of their anionic character and high water content, the polymeric hydrogels are useful for a wide variety of biomedical applications including controlled drug delivery (e.g. pH sensitive drug delivery), biocompatible coatings, and pH sensitive membranes.

    摘要翻译: 公开了含有羧酸侧基和烷基氨基,烷氧基或烷氧基醚侧基的各种比例的聚(有机膦腈)聚合物。 这些水溶性大分子被交联并允许吸收水以形成水凝胶。 由于其阴离子特性和高水含量,聚合物水凝胶可用于各种生物医学应用,包括受控药物递送(例如pH敏感药物递送),生物相容性涂层和pH敏感膜。