The present invention relates to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, and more particularly, to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, including a first step of dissolving a biodegradable polymer in a non-volatile polar organic solvent, a second step of adding poorly soluble drugs to water and the biodegradable polymer solution to produce a dispersion, and a third step of adding the dispersion to emulsifier solutions in a batch under the condition of low mechanical energy level stirring. The polymeric nanoparticles of the present invention is capable of manufacturing nano-sized small and uniform polymeric nanoparticles through a simple method of employing a non-volatile polar solvent, especially a solvent having a polarity similar to that of water, as a solvent for a mixture solution of biodegradable polymer and poorly soluble materials, and using a low mechanical energy condition and batch-adding of dispersion in an emulsifying process. The polymeric nanoparticles of the present invention are advantageous in that the dissolution rate of the poorly soluble drugs contained in polymeric particles is dramatically improved, and the poorly soluble drugs are gradually and steadily released and maintained at a constant density over a long period of time.本発明は、難溶性薬物を含む均一なサイズの高分子ナノ粒子の製造方法に関するもので、より詳細には、生分解性高分子を不揮発性の極性有機溶媒に溶解させる工程(工程1)、前記生分解性高分子溶液に、水に難溶性な薬物を加えて分散液を製造する工程(工程2)及び低い機械的エネルギー水準の撹拌条件の下で、前記分散液を乳化剤水溶液に一括添加する工程(工程3)とを含む、難溶性薬物を含む均一な高分子ナノ粒子に関するものである。本発明によると、生分解性高分子と難溶性物質の混合溶液の溶媒として不揮発性の極性溶媒、特に水と類似の極性を有する溶媒を用いて、乳化過程で低い機械的エネルギー条件及び分散液の一括添加の簡単な方法だけで製造することができ、高分子粒子内に含有された難溶性物質の溶出率が大きく改善され、難溶性薬物が徐々に持続的に放出され一定濃度で長期間維持され得る、小さくて均一なナノサイズの高分子ナノ粒子を提供するのに有用に用いることができる。
