PROBLEM TO BE SOLVED: To provide a sustained release system of a medicine in which the sustained release of the medicine can be controlled by a complex material of polymers having different decomposition/absorption properties and capable of controlling the medicinal concentration in a living body, in an optimal concentration for an optimal period.SOLUTION: This sustained release system of the medicine is provided by having &ge2 kinds of medicine carriers, forming the medicine carriers by decomposable/absorbable polymers having different decomposition/absorption rates and enabling the control of the stable sustained release rate of the medicine per unit time. The control of the sustained release rate per the unit time is performed by the difference of the decomposition/absorption rates of each of the decomposable/absorbable polymers constituted as the &ge2 kinds of medicine carriers.COPYRIGHT: (C)2006,JPO&NCIPI【課題】薬剤の徐放が、分解吸収性の異なる高分子の複合体により制御可能であり、至適濃度、至適期間生体内の薬物濃度を制御できる薬剤徐放システムを提供すること。【解決手段】二種類以上の薬剤担体を有し、当該薬剤担体を相互に分解吸収速度の異なる分解吸収性高分子より形成し、安定した薬剤の単位時間当たりの徐放速度を制御可能にした薬剤徐放システム。前記単位時間当たりの徐放速度の制御は、二種類以上の薬剤担体として構成されるそれぞれの分解吸収性高分子の分解吸収速度の差により制御した。【選択図】図1
