发明名称 |
Drug Release From Nanoparticle-Coated Capsules |
摘要 |
Methods of producing a controlled release formulation for an active substance are disclosed, wherein the methods involve dispersing a discontinuous phase comprising an active substance into a continuous phase so as to form a two-phase liquid system comprising droplets of said discontinuous phase, and allowing nanoparticles provided to the two-phase liquid system to congregate at the phase interface to thereby coat the surface of the droplets in at least one layer of said nanoparticles. The methods utilise a concentration of a suitable electrolyte which enhances the nanoparticle congregation such that the coating of nanoparticles on the surface of the droplets presents a semi-permeable barrier to the active substance, or otherwise utilise a amount of the active substance that is greater than the solubility limit of that active substance in the discontinous phase. Formulations comprising vitamin A (retinol) as the active substance for dermal delivery are specifically exemplified.
|
申请公布号 |
US2011229559(A1) |
申请公布日期 |
2011.09.22 |
申请号 |
US201113073351 |
申请日期 |
2011.03.28 |
申请人 |
UNIVERSITY OF SOUTH AUSTRALIA |
发明人 |
PRESTIDGE CLIVE ALLAN;SIMOVIC SPOMENKA;ESKANDAR NASRIN GHOUCHI |
分类号 |
A61K9/127;A61K9/00;A61K31/07;A61P3/02;B82Y5/00 |
主分类号 |
A61K9/127 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|