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Original Article

Korean Journal of Medical Physics 2010; 21(2): 201-208

Published online June 25, 2010

Copyright © Korean Society of Medical Physics.

Deduction and Verification of Optimal Factors for Stent Structure and Mechanical Reaction Using Finite Element Analysis

스텐트의 구조 및 기계적인 반응에 대한 최적인자 도출과 유한요소해석법을 통한 검증

Dong-Min Jeon*, Won-Gyun Jung*, Han-Ki Kim, Sang-Ho Kim, Il Gyun Shin, Hong-Seok Jang§, Tae-Suk Suh*

전동민*ㆍ정원균*ㆍ김한기ㆍ김상호ㆍ신일균ㆍ장홍석§ㆍ서태석*

*Department of Biomedical Engineering, College of Medicine,Research Institute of Biomedical Engineering, The Catholic University of Korea, Institute of Interventional Medicine, M. I. Tech Co., Lnc,§Department of Radiation Oncology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea

*가톨릭대학교 의과대학 의공학교실, 가톨릭대학교 생체의공학연구소, (주)엠아이텍 중재의학연구소, §가톨릭대학교 서울성모병원 방사선종양학과

Abstract

Recently, along with technology development of endoscopic equipment, a stent has been developed for the convenience of operation, shortening of recovery times, and reduction of patient's pain. To this end, optimal factors are simulated for the stent structure and mechanical reaction and verified using finite element analysis. In order to compare to present commercialized product such as Zilver (Cook, Bloomington, Indiana, USA) and S.M.A.R.T (Cordis, Bridgewater Towsnhip, New Jersey, USA), mechanical impact factors were determined through Taguchi factor analysis, and flexibility and expandability of all the products including ours were tested using finite element analysis. Also, important factors were sought that fulfill the optimal condition using central composition method of response surface analysis, and optimal design were carried out based on the important factors. From the centra composition method of Response surface analysis, it is found that importat factors for flexibility is stent thickness (T) and unit area (W) and those for expandability is stent thickness (T). In results, important factors for optimum condition are 0.17 mm for stent thickness (T) and 0.09 mm2 for unit area (W). Determined and verified by finite element analysis in out research institute, a stent was manufactured and tested with the results of better flexibility and expandability in optimal condition compared to other products. Recently, As Finite element analysis stent mechanical property assessment for research much proceed. But time and reduce expenses research rarely stent of optimum coditions. In this research, Important factor as mechanical impact factor stent Taguchi factor analysis arrangement to find flexibility with expansibility as Finite element analysis. Also, Using to Center composition method of Response surface method appropriate optimized condition searching for important factor, these considering had design optimized. Production stent time and reduce expenses was able to do the more coincide with optimum conditions. These kind of things as application plan industry of stent development period of time and reduce expenses etc. be of help to many economic development.

KeywordsStent, Central composite design, Finite element analysis, Major factor

Korean Society of Medical Physics

Vol.35 No.2
June 2024

pISSN 2508-4445
eISSN 2508-4453
Formerly ISSN 1226-5829

Frequency: Quarterly

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