Controlled release composition
    67.
    发明申请
    Controlled release composition 审中-公开
    控制释放组成

    公开(公告)号:US20050019405A1

    公开(公告)日:2005-01-27

    申请号:US10827521

    申请日:2004-04-20

    申请人: Daniel Bar-Shalom

    发明人: Daniel Bar-Shalom

    摘要: A composition for controlled delivery of at least one active substance into an aqueous medium by erosion at a preprogrammed rate of at least one surface of the composition, comprising a matrix comprising the active substance, the matrix being erodible in the aqueous medium in which the composition is to be used, and a coating having at least one opening exposing at least one surface of said matrix, the coating comprising a first cellulose derivative which has thermoplastic properties and which is substantially insoluble in the aqueous medium in which the composition is to be used, and at least one of a second cellulose derivative which is soluble or dispersible in water, a plasticizer, and a filler. The coating is a coating which crumbles and/or erodes upon exposure to the aqueous medium such as a body fluid. The first cellulose derivative may be, e.g., ethylcellulose, cellulose acetate, cellulose propionate or cellulose nitrate, and the second cellulose derivative may be, e.g., methylcellulose, carboxymethylcellulose or salts thereof, cellulose acetate phthalate, microcrystalline cellulose, ethylhydroxyethylcellulose, ethylmethylcellulose, hydroxyethylcellulose, hydroxyethylmethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxymethylcellulose or hydroxymethylpropylcellulose.

    摘要翻译: 一种组合物,用于通过以组合物的至少一个表面的预编程速率侵蚀将至少一种活性物质控制递送到水性介质中,所述组合物包含基质,所述基质包含活性物质,所述基质在水性介质中可被侵蚀, 以及具有至少一个露出至少一个所述基质表面的开口的涂层,所述涂层包含具有热塑性的第一纤维素衍生物,并且其基本上不溶于要使用该组合物的水性介质中 ,以及可溶于或分散在水中的第二纤维素衍生物,增塑剂和填料中的至少一种。 涂层是在暴露于诸如体液的水性介质时破裂和/或腐蚀的涂层。 第一纤维素衍生物可以是例如乙基纤维素,乙酸纤维素,丙酸纤维素或硝酸纤维素,第二纤维素衍生物可以是例如甲基纤维素,羧甲基纤维素或其盐,乙酸邻苯二甲酸纤维素,微晶纤维素,乙基羟乙基纤维素,乙基甲基纤维素,羟乙基纤维素, 羟乙基甲基纤维素,羟丙基纤维素,羟丙基甲基纤维素,羟甲基纤维素或羟甲基丙基纤维素。

    Lozenge for the modified releasing of active substances in the gastrointestinal tract
    70.
    发明授权
    Lozenge for the modified releasing of active substances in the gastrointestinal tract 失效
    用于改善胃肠道活性物质释放的锭剂

    公开(公告)号:US6270798B2

    公开(公告)日:2001-08-07

    申请号:US30842999

    申请日:1999-07-06

    发明人: CREMER KARSTEN

    CPC分类号: A61K9/0056 A61K9/2081

    摘要: A pharmaceutical lozenge for the modified release of active compounds in the gastrointestinal tract is described, with active-compound-containing particles which have a first coating controlling the release and a further, outer coating with saliva-resistant properties. The first coating, which controls the release of active compound, can have release-delaying or enteric properties.

    摘要翻译: 描述了用于在胃肠道中改性释放活性化合物的药物锭剂,其中含有活性化合物的颗粒具有控制释放的第一涂层和进一步具有耐唾液性的外涂层。 控制活性化合物释放的第一个涂层可具有释放延迟或肠溶性。