Manufacture of hollow fine tubular drug delivery systems
    4.
    发明授权
    Manufacture of hollow fine tubular drug delivery systems 失效
    中空管状药物输送系统的制造

    公开(公告)号:US4720384A

    公开(公告)日:1988-01-19

    申请号:US898653

    申请日:1986-08-21

    CPC分类号: A61K9/0092

    摘要: Pharmaceutical compositions are provided which contain hollow fine tube drug delivery systems. The compositions comprise a pharmaceutically suitable carrier, preferably in the form of a capsule, tablet, suspension, or suppository, and at least one drug delivery system which consists essentially of (1) a polymeric tube having a membrane outer sheath and a hollow core, and (2) at least one drug compound contained within the core, said system contained in the composition in an amount sufficient to deliver a therapeutic amount of the drug contained therein at a predetermined rate over a predetermined period of time. By varying the polymer, the permeability of the outer sheath, the drug, the drug concentration in the hollow core of the tube, the tube diameter, the tube length, the tube core diameter, and the sealing of the tube ends, a wide variety of drug therapeutic amounts, rates and dosing times can be achieved.

    摘要翻译: 提供了含有中空细管药物递送系统的药物组合物。 组合物包含药学上合适的载体,优选以胶囊,片剂,悬浮液或栓剂的形式,以及至少一种药物递送系统,其基本上由(1)具有膜外护套和中空芯的聚合物管组成, 和(2)包含在核心内的至少一种药物化合物,所述系统包含在组合物中,其量足以在预定时间内以预定的速率输送治疗量的药物。 通过改变聚合物,外鞘的渗透性,药物,管的中空芯中的药物浓度,管直径,管长度,管芯直径和管末端的密封,种类繁多 的药物治疗量,速率和给药时间可以实现。

    Use of vinyl alcohol homopolymer and copolymers for tableting active
materials
    6.
    发明授权
    Use of vinyl alcohol homopolymer and copolymers for tableting active materials 失效
    乙烯醇均聚物和共聚物用于压片活性物质的应用

    公开(公告)号:US4990335A

    公开(公告)日:1991-02-05

    申请号:US165230

    申请日:1988-05-12

    IPC分类号: A61K9/20 C11D17/00

    CPC分类号: C11D17/0073 A61K9/2027

    摘要: Method of making tablets for active ingredient delivery by compressing a mixture of active ingredient and granular, high viscosity, fully hydrolyzed polyvinyl alcohol or copolymer of vinyl alcohol with methyl acrylate or methyl methacrylate. By use of a crystalline, heat treated polymer, a tablet providing quick active ingredient release is obtained. By using an amorphous, non-heat treated polymer a tablet providing prolonged active ingredient release is obtained. By using blends of crystalline and amorphous polymers, tablets having a range of active ingredient release characteristics can be obtained. The granular, high viscosity, fully hydrolyzed polymers provide flowability, compressibility and processing versatility advantages over conventional tablet binders.

    摘要翻译: 通过压缩活性成分和颗粒状,高粘度,完全水解的聚乙烯醇或乙烯醇与丙烯酸甲酯或甲基丙烯酸甲酯的共聚物的混合物制备用于活性成分递送的片剂的方法。 通过使用结晶的经热处理的聚合物,获得了提供快速活性成分释放的片剂。 通过使用无定形的未加热处理的聚合物,获得延长的活性成分释放的片剂。 通过使用结晶和无定形聚合物的混合物,可以获得具有一定范围的活性成分释放特性的片剂。 颗粒状,高粘度,完全水解的聚合物提供了流畅性,压缩性和加工多功能性优于传统的片剂粘合剂。

    Coextruded elastomeric films
    7.
    发明授权
    Coextruded elastomeric films 失效
    共挤塑料膜

    公开(公告)号:US4524099A

    公开(公告)日:1985-06-18

    申请号:US526960

    申请日:1983-08-30

    IPC分类号: B32B27/32 B32B7/02

    摘要: A transparent, elastomeric, composite film structure having a core ethylene/vinyl acetate copolymer and outer layers of a low density ethylene homopolymer or copolymer with a small amount of another .alpha.-olefin or vinyl acetate is made by coextrusion of the polymers in a three-layer combining adapter and quenching on a chill roll. This film structure is useful as a wrapping material, especially for heat-sensitive articles.

    摘要翻译: 具有核心乙烯/乙酸乙烯酯共聚物和低密度乙烯均聚物或少量另外的α-烯烃或乙酸乙烯酯的共聚物的透明的,弹性体的复合膜结构是通过三元共聚物共挤出而制成的, 层组合适配器和淬火辊上的淬火。 该膜结构可用作包裹材料,特别是对于热敏性物品。

    Process for making coextruded elastomeric films
    9.
    发明授权
    Process for making coextruded elastomeric films 失效
    制备共挤塑料膜的方法

    公开(公告)号:US4579696A

    公开(公告)日:1986-04-01

    申请号:US676098

    申请日:1984-11-29

    IPC分类号: B32B27/32 B29C35/10 B32B7/02

    CPC分类号: B32B27/32 B32B27/322

    摘要: A transparent, elastomeric, composite film structure having a core ethylene/vinyl acetate copolymer and outer layers of a low density ethylene homopolymer or copolymer with a small amount of another .alpha.-olefin or vinyl acetate is made by coextrusion of the polymers in a three-layer combining adapter and quenching on a chill roll. This film structure is useful as a wrapping material, especially for heat-sensitive articles.

    摘要翻译: 具有核心乙烯/乙酸乙烯酯共聚物和低密度乙烯均聚物或少量另外的α-烯烃或乙酸乙烯酯的共聚物的透明的,弹性体的复合膜结构是通过三元共聚物共挤出而制成的, 层组合适配器和淬火辊上的淬火。 该膜结构可用作包裹材料,特别是对于热敏性物品。