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트란 티탄 휘엔,황성주 충남대학교 생물공학연구소 2005 생물공학연구지 Vol.11 No.2
Osmotically drug delivery systems utilize osmotic pressure as driving force for controlled delivery of drugs. The release of drug from these systems is independent of the physiological factors of the gastrointestinal tract (GI) to a large extent. Different types of osmotically controlled oral drug delivery systems (OROS) were present in a number of patents. Because patents are hard to read, to analyze, and to judge due to the different styles in which they are written. This review analyzes U.S. patents on OROS, different types of OROS with advantages, limitations and applications are discussed.