Zwitterionic polymers
    1.
    发明申请

    公开(公告)号:US20050159556A1

    公开(公告)日:2005-07-21

    申请号:US11025968

    申请日:2005-01-03

    摘要: Polymers may be made from zwitterionic monomers having controlled architectures and molecular weights, using living polymerisations such as group or atom transfer radical polymerisation. For instance polymers may be formed by atom transfer radical polymerisation using a copper chloride catalyst, a ligand which is water soluble, and a water soluble tertiary alkyl halide initiator to form homopolymers having controlled polydispersities of less than 1.5 and block copolymers with other hydrophilic or hydrophobic monomers. One suitable zwitterionic monomer is 2-methacryloyloxy-2′-trimethylammoniumethyl phosphate inner salt. The block copolymers may spontaneously form micelles, believed to have zwitterionic, for instance phosphorylcholine, groups at the external surface, which may be useful as drug delivery systems with improved biocompatibility.

    COATED IMPLANT
    2.
    发明申请
    COATED IMPLANT 审中-公开
    涂层植入物

    公开(公告)号:US20090317443A1

    公开(公告)日:2009-12-24

    申请号:US12373334

    申请日:2007-07-16

    CPC分类号: A61L31/10 A61L31/14

    摘要: A method forming a coated implant is described. The implant comprises a surface which is first coated with a primer and subsequently with a biocompatible polymer capable of forming a covalent bond to the primer. The polymer coating is then crosslinked. The invention also relates to implants, in particular, stents, coated with such a coating.

    摘要翻译: 描述了形成涂覆植入物的方法。 植入物包括首先用引物涂覆的表面,随后与能够与引物形成共价键的生物相容性聚合物。 然后将聚合物涂层交联。 本发明还涉及用这种涂层涂覆的植入物,特别是支架。