发明名称 |
OSMOTIC PUMP CONTROLLED RELEASE TABLET AND PREPARATION METHOD THEREOF |
摘要 |
An osmotic pump controlled release tablet and the preparation method thereof are disclosed. The osmotic pump controlled release tablet is composed of tablet core, semipermeable membrane and optional film coating. The material of said semipermeable membrane is composed of ethyl cellulose and povidone in the ratio of 1:1~1:4 by weight. Said tablet core comprises drug containing layer and push layer. The osmotic pump controlled release tablet also characterizes in that; (1) the angle ¸ 1 formed by the outer curved surface of the drug containing layer and the lateral surface is 120°-180°; and/or (2) the ratio of L 1 to r is 0.27-1.0, wherein L 1 is the vertical distance from the central vertex of the outer curved surface of the drug containing layer to the plane formed by the intersection line between the outer curved surface of the drug containing layer and the lateral surface, and r is the radius of the tablet core. |
申请公布号 |
KR20120056864(A) |
申请公布日期 |
2012.06.04 |
申请号 |
KR20127008828 |
申请日期 |
2010.04.29 |
申请人 |
TEAM ACADEMY OF PHARMACEUTICAL SCIENCE |
发明人 |
JIANG QINGWEI;YI WEIFENG;LIU QUANZHI;YANG WENBIN;ZHENG JUNLI |
分类号 |
A61K9/22;A61K9/20;A61K9/24;A61K47/32 |
主分类号 |
A61K9/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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