发明名称 |
MULTILAYER MATRIX SYSTEMS FOR THE CONTROLLED RELEASE OF ACTIVE PRINCIPLES. |
摘要 |
<p>This invention concerns systems for the release of active principles which are capable of releasing active principle(s) into an aqueous medium at a controlled rate. More precisely, the invention concerns a monolithic system for the controlled release of active principles, consisting of: a) at least one swelling layer containing one or more active principles, in a matrix of swellable, hydrophilic polymers; b) at least one erodible and/or soluble layer comprising excipients and/or water soluble polymers, possibly containing one or more active principles, either the same or different from those present in the layer a), the said erodible and/or soluble layer being in contact with the swelling layer(s) a).</p> |
申请公布号 |
GR3026546(T3) |
申请公布日期 |
1998.07.31 |
申请号 |
GR19980400732T |
申请日期 |
1998.04.06 |
申请人 |
INVERNI DELLA BEFFA S.P.A. |
发明人 |
COLOMBO, PAOLO;CORVI CARDONA, ANTONIO;PIFFERI, GIORGIO |
分类号 |
A61J3/10;A61K9/20;A61K9/24;A61K9/48;A61K47/04;A61K47/10;A61K47/12;A61K47/32;A61K47/34;A61K47/36;A61K47/38;A61K47/42;(IPC1-7):A61K9/24 |
主分类号 |
A61J3/10 |
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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