Agent delivery systems
    2.
    发明公开
    Agent delivery systems 失效
    Systeme zur Wirkstofffreisetzung。

    公开(公告)号:EP0205342A2

    公开(公告)日:1986-12-17

    申请号:EP86304445.9

    申请日:1986-06-10

    IPC分类号: A61K9/22 A61D7/00 A61M31/00

    CPC分类号: A61K9/0068 A61M31/002

    摘要: The invention relates to improvements in boluses for releasing a biologically active substance into a liquid environment. These boluses comprise a generally elongate core (25) surrounded by a liquid impermeable casing (11), (13), (15). In use, the casing has an opening at one (27) or both ends of the core and is progressively shed as the core retreats, to release the active substance at a rate which varies over at least one time period. The main improvement resides in that the bolus casing is (or at least some of its components are) sufficiently strong to retain integrity without disintegrating in the absence of any support provided by the core.

    摘要翻译: 本发明涉及用于将生物活性物质释放到液体环境中的丸剂的改进。 这些推注包括由液体不可渗透的外壳(11),(13),(15)包围的大致细长的芯部(25)。 在使用中,壳体在芯的一个(27)或两端具有开口,并且随着芯部后退而逐渐脱落,以至少在一个时间段内变化的速率释放活性物质。 主要的改进在于,弹丸套管(或其至少一些部件)足够坚固以保持完整性而不会在没有由芯提供的任何支撑的情况下分解。