发明名称 |
MULTILAYER DOSAGE FORM COMPRISING A MATRIX THAT INFLUENCES RELEASE OF A MODULATORY SUBSTANCE |
摘要 |
The invention relates to a multilayer dosage form for the controlled release of active substances, which substantially comprises a) optionally a neutral core (nonpareilles), b) an inner control layer, comprising a modulatory effective substance that is embedded in a matrix that influences release of a modulatory substance, said matrix comprising pharmaceutically acceptable polymers, waxes, resins and/or proteins and optionally an active substance, c) an active substance layer, comprising a pharmaceutically active substance and optionally a modulatory effective substance, d) an outer control layer, comprising at least 60 % by weight of one or more mixtures from a plurality of (meth)acrylate copolymers, 98 to 85 C<SUB>1</SUB> to C<SUB>4 </SUB>alkyl esters of the (meth)acrylic acid and 2 to 15 % by weight of methacrylate monomers with a quaternary ammonium group in the alkyl group, and optionally up to 40 % by weight of additional pharmaceutically acceptable polymers. The dosage form is further characterized in that the layers additionally contain, in a manner known per se, pharmaceutically common adjuvants. |
申请公布号 |
WO2005046561(A3) |
申请公布日期 |
2006.03.16 |
申请号 |
WO2004EP10300 |
申请日期 |
2004.09.15 |
申请人 |
ROEHM GMBH & CO. KG;LIZIO, ROSARIO;PETEREIT, HANS-ULRICH;ASSMUS, MANFRED;RAVISHANKAR, HEMA |
发明人 |
LIZIO, ROSARIO;PETEREIT, HANS-ULRICH;ASSMUS, MANFRED;RAVISHANKAR, HEMA |
分类号 |
A61K9/20;A61K;A61K9/16;A61K9/24;A61K9/50;A61K47/12 |
主分类号 |
A61K9/20 |
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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