本文研究一种新的给药系统(DDS)以尽量减少病人频繁的用药次数和降低药物的副作用。DDS的基本原理就是通过减少药物的溶解速率达到延缓药物吸收速度的目的。用该原理设计的给药系统实际上就是利用胃肠道生理学的“恒定性”,根据制剂在消化道运转时间和胃肠道局部的pH值,使药物在胃肠道特定位置释放,产生最佳疗效。本文介绍的DDS即将合适的吸收部位 This article studies a new drug delivery system (DDS) to minimize patient frequency of medication and reduce drug side effects. The basic principle of DDS is to reduce the drug dissolution rate to delay the purpose of drug absorption rate. The drug delivery system designed by this principle is to use the “constancy” of gastrointestinal physiology to release the drug at a specific position of the gastrointestinal tract according to the preparation’s time of operation in the digestive tract and the pH value of the local gastrointestinal tract Good effect. This article describes the upcoming DDS appropriate absorption site