Hylan preparation and method of recovery thereof from animal tissues
    5.
    发明授权
    Hylan preparation and method of recovery thereof from animal tissues 失效
    Hylan制剂及其从动物组织中回收的方法

    公开(公告)号:US5099013A

    公开(公告)日:1992-03-24

    申请号:US616706

    申请日:1990-11-16

    IPC分类号: C08B37/08

    CPC分类号: C08B37/0072

    摘要: Disclosed is hylan, a chemically modified hyaluronan preparation characterized by the presence of small amounts (0.0002-0.05% by weight) of aldehyde cross-linking groups covalently bonded to the hyaluronan molecular chains. Also disclosed is an improved method of obtaining hylan comprising treating hyaluronan in situ in animal tissues containing same with a treatment mixture including an aldehyde which is reactive towards hyaluronic acid and the proteins contained in the animal tissue. Treatment is effected at temperatures below about 16.degree. C. at very high pH, e.g., 8-14 whereby the overall yield is increased while maintaining the high molecular weight of the hylan.

    摘要翻译: 公开了一种化学改性的透明质酸制剂,其特征在于存在少量(0.0002-0.05重量%)共价结合到透明质酸分子链上的醛交联基团。 还公开了一种获得hylan的改进方法,其包括用包含对透明质酸和包含在动物组织中的蛋白质具有反应性的醛的处理混合物在原位处理透明质酸的动物组织。 在非常高的pH(例如8-14)下,在低于约16℃的温度下进行处理,由此总体收率提高同时保持高分子量的木聚糖。

    Polymeric articles modified with hyaluronate
    9.
    发明授权
    Polymeric articles modified with hyaluronate 失效
    用透明质酸改性的聚合制品

    公开(公告)号:US4487865A

    公开(公告)日:1984-12-11

    申请号:US561817

    申请日:1983-12-15

    摘要: Polymeric materials (and articles made therefrom) including polyurethanes, polyesters, polyolefins, polyamides, polysiloxanes, vinylic and acrylic polymers are rendered biocompatible by including with the polymeric material hyaluronic acid or a salt thereof. The hyaluronic acid may be coated onto the surface of the polymeric material, dispersed throughout the body of the polymeric material, or both. The hyaluronic acid on the surface of the polymeric material may optionally be cross-linked. The biocompatible polymeric materials are used in the making of various prosthetic devices including heart valves, intraocular lenses, vascular grafts, pacemaker leads and the like.

    摘要翻译: 包括聚氨酯,聚酯,聚烯烃,聚酰胺,聚硅氧烷,乙烯基和丙烯酸类聚合物在内的聚合材料(和由其制成的制品)通过用聚合物透明质酸或其盐包括而形成生物相容性。 透明质酸可以涂覆在聚合物材料的表面上,分散在整个聚合物材料的主体中,或者两者。 聚合物材料表面上的透明质酸可以任选地交联。 生物相容性聚合物材料用于制造各种假体装置,包括心脏瓣膜,人工晶状体,血管移植物,起搏器引线等。