한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제29권1호
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  • Pages.103-108
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  • 2012
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
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관상동맥혈관용 스텐트의 수치해석 및 형상 설계

Numerical Evaluation and Shape Design of Coronary Artery Stent

  • 김대영 (강원대학교 기계의용공학과) ;
  • 이승열 (강원대학교 기계의용공학과) ;
  • 김헌영 (강원대학교 기계의용공학과)
  • Kim, Dae-Young (Department of Mechanical biomedical Engineering, Kangwon National Univ.) ;
  • Lee, Seung-Yeol (Department of Mechanical biomedical Engineering, Kangwon National Univ.) ;
  • Kim, Heon-Young (Department of Mechanical biomedical Engineering, Kangwon National Univ.)
  • 투고 : 2011.08.10
  • 심사 : 2011.09.27
  • 발행 : 2012.01.01
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초록

Restenosis symptom, which is well known as a problem of stents, is due to the recoil and expansion pressure depending on shapes of stent. In order to reduce the effect of recoil problem, study on pattern and shape for the stent is required and the expansion pressure and recoil should be evaluated. This paper aims at evaluating mechanical characteristics of stent used in surgery for vessel stenosis. The expansion process of coronary artery stent in vessel for two models including the Cypher$^{(R)}$ from Johnson & Johnson$^{TM}$ and a suggested model were simulated using the Finite Element Analysis. Comparison of the directional recoil simulation results was made. The issues in the deformed shape of vessel and recoil of Cypher$^{(R)}$ were partially resolved in the suggested model. Therefore, the shape design suggested in this paper was able to reduce the restenosis symptom.

키워드

참고문헌

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