Hydrogel surface of urological prosthesis
    2.
    发明授权
    Hydrogel surface of urological prosthesis 失效
    泌尿系假体水凝胶表面

    公开(公告)号:US4527293A

    公开(公告)日:1985-07-09

    申请号:US495698

    申请日:1983-05-18

    CPC分类号: A61L27/34 Y10S524/916

    摘要: Disclosed is a urological device comprising a polymeric prosthesis coated on its surface by a grafted or interpenetrated hydrogel copolymer comprising 2-hydroxyethyl methacrylate, methacrylic acid, and a crosslinking agent, wherein each constituent of said copolymer is present in an amount selected from a defined range of mole fraction %. The hydrogel exhibits a shrink/swell behavior which varies with changing urine composition such that the polymer undergoes swelling and collapse in rapid response to said change and thereby prevents calcium encrustation. Also disclosed is a method for making the device.

    摘要翻译: 公开了一种泌尿装置,其包括通过包含甲基丙烯酸2-羟乙酯,甲基丙烯酸和交联剂的接枝或互穿的水凝胶共聚物在其表面上涂覆的聚合物假体,其中所述共聚物的每种组分以选自限定范围的量存在 的摩尔分数%。 水凝胶表现出收缩/膨胀行为,随着尿液组成的变化而变化,使得聚合物随着所述变化的快速响应而发生膨胀和塌陷,从而防止钙结垢。 还公开了一种制造该装置的方法。

    Method and device for connecting biological duct to a prosthesis
    6.
    发明授权
    Method and device for connecting biological duct to a prosthesis 失效
    将生物管道连接到假体的方法和装置

    公开(公告)号:US5480434A

    公开(公告)日:1996-01-02

    申请号:US91818

    申请日:1993-07-13

    IPC分类号: A61B17/11 A61F2/04

    摘要: An anastomotic method for connecting a biological duct, such as the ureter, to a man-made device. The method involves connecting the duct to the prosthesis via an intermediate tissue so there is no direct connection between the ureter and the prosthesis. The method includes securing the resected duct to a remote living tissue, such as the peritoneum or omentum, and then securing that tissue to the prosthesis so that the duct drains into the prosthesis.

    摘要翻译: 用于将诸如输尿管的生物导管连接到人造装置的吻合方法。 该方法包括通过中间组织将管道连接到假体,使得输尿管和假体之间没有直接连接。 该方法包括将切除的管道固定到诸如腹膜或网膜的远程生物组织,然后将该组织固定到假体,使得管道排入假体。