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    • 4. 发明申请
    • DRUG DELIVERY SYSTEM BASED ON POLYETHYLENE VINYLACETATE COPOLYMERS
    • 基于聚乙烯乙酰乙酸酯共聚物的药物输送系统
    • WO2005089723A1
    • 2005-09-29
    • PCT/EP2005/051189
    • 2005-03-16
    • AKZO NOBEL N.V.DE GRAAFF, WouterGROEN, Janneke, SophieKRUFT, Marc AntonVAN LAARHOVEN, Johannes, Antonius, HendrikusVROMANS, HermanZEEMAN, Raymond
    • DE GRAAFF, WouterGROEN, Janneke, SophieKRUFT, Marc AntonVAN LAARHOVEN, Johannes, Antonius, HendrikusVROMANS, HermanZEEMAN, Raymond
    • A61K9/22
    • A61K9/0036A61K31/565A61K31/57A61K47/32
    • A drug delivery system consisting of one or more compartments and comprising a progestogenic compound dissolved in a thermoplastic polyethylene vinylacetate copolymer whereby, if the delivery system consists of one compartment, the compartment comprises (i) a core of a thermoplastic polyethylene vinylacetate copolymer comprising the progestogenic compound, such progestogenic compound being dissolved in the polyethylene vinylacetate copolymer up to a concentration below the saturation level at 25°C, and an estrogenic compound; and (ii) a skin of a thermoplastic polyethylene vinylacetate copolymer covering the core, said skin being permeable for both compounds;- if the delivery system consists of more than one compartment, only one compartment comprises (iii) the progestogenic compound, such progestogenic compound being dissolved in a core of a thermoplastic polyethylene vinylacetate copolymer up to a concentration below the saturation level at 25°C, and an estrogenic compound; and (iv) a skin of a thermoplastic polyethylene vinylacetate copolymer covering the core, said skin being permeable for both compounds.
    • 一种由一个或多个隔室组成并包含溶解在热塑性聚乙烯乙酸乙烯酯共聚物中的孕激素化合物的药物递送系统,其中如果递送系统由一个隔室组成,则隔室包含(i)包含孕激素的热塑性聚乙烯乙酸乙烯酯共聚物的核心 化合物,这种孕激素化合物溶解在聚乙烯乙酸乙烯酯共聚物中,直到在25℃下低于饱和水平的浓度,和雌激素化合物; 和(ii)覆盖芯的热塑性聚乙烯乙酸乙烯酯共聚物的皮肤,所述皮肤对于两种化合物是可渗透的; - 如果递送系统由多于一个隔室组成,则仅一个隔室包含(iii)孕激素化合物,例如孕激素化合物 溶解在热塑性聚乙烯乙酸乙烯酯共聚物的芯中,其浓度低于25℃的饱和水平,以及雌激素化合物; 和(iv)覆盖所述芯的热塑性聚乙烯乙酸乙烯酯共聚物的皮肤,所述皮肤对于这两种化合物是可渗透的。