Numerical Analysis and Optimum Design of Disposable Drug Infuser Using Fluid-Structure Interaction Technique

유체-구조 상호작용기법을 이용한 일회용 약물주입기의 성능 해석 및 최적 설계

  • Kim, Heon-Young (Dept. of Mechanical and Biomedical Engineering, College of Engineering, Kangwon National Univ.) ;
  • Kim, Hak-Jin (Dept. of Mechanical and Biomedical Engineering, College of Engineering, Kangwon National Univ.)
  • 김헌영 (강원대학교 기계의용공학과) ;
  • 김학진 (강원대학교 기계의용공학과)
  • Received : 2010.03.12
  • Accepted : 2010.09.14
  • Published : 2010.11.01


A disposable drug infuser is used to provide drugs to patients who are not hospitalized; in this infuser, an elastic recovery force is exerted by a diaphragm made of a rubber-like materialsuch that a constant amount of drugs is provided to a patient. The drug infuser has to control the speed and amount of drugs to be released, as well as the overall duration for which they are to be administered. However, in a drug infuser with an elastic diaphragm, the infusion pressure depends on the amount of drug remaining within the infuser, and the amount of drug infused gradually decreases as the amount remaining in the infuser decreases. In this study, a finite element procedure involving the application of the fluid-structure interaction technique was developed and the performance of the elastic type disposable drug infuser was analyzed. The optimum design for ensuring that the infusion pressure remains constant throughout the duration of usage, including during infusion and discharge, was determined by this procedure.


Disposable Drug Infuser;Fluid-Structure Interaction;Taguchi Methods


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