Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Evaluation and Shape Design of Coronary Artery Stent

관상동맥혈관용 스텐트의 수치해석 및 형상 설계

  • 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.)
  • 김대영 (강원대학교 기계의용공학과) ;
  • 이승열 (강원대학교 기계의용공학과) ;
  • 김헌영 (강원대학교 기계의용공학과)
  • Received : 2011.08.10
  • Accepted : 2011.09.27
  • Published : 2012.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

References

  1. Park, W. P., Cho, S. K., Cho, E. J., Kim, H. S. and Ko, J. Y., "A Study on Mechanical Characteristics of Stents using Finite Element Method," Proc. of Korean Society for Precision Engineering Autumn Conference, pp. 563-564, 2006.
  2. Kim, S. M. and Park, S. Y., "Finite Element Analysis of Stent Expansion Considering Stent, Artery and Plaque Interaction," Journal of Korean Society for Precision Engineering, Vol. 23, No. 10, pp. 121-125, 2006.
  3. Balossino, R., Gervaso, F., Migliavacca, F. and Dubini, G., "Effects of different stent designs on local hemodynamics in stented arteries," Journal of Biomechanics, Vol. 41, No. 5, pp. 1053-1061, 2008. https://doi.org/10.1016/j.jbiomech.2007.12.005
  4. Machenna, C. J., Holmes, D. R. and Schwartz, R, S., "Novel stent for the prevention of restenosis," Trends Cardiovasc. Med., Vol. 7, No. 7, pp. 245-259, 1997. https://doi.org/10.1016/S1050-1738(97)00066-2
  5. Mario, C. D., Grube, E., Nisanci, Y., Reifart, N., Colombo, A., Rodermann, J., Muller, R., Ulmman, S., Liistro, F., Montorfano, M. and Alt, E. "MOONLIGHT : a Controlled Registry of an Iridium Oxide coated Stent with Angiographic Followup," Int. J. Cardiology, Vol. 95, No. 2-3, pp. 329-331, 2004. https://doi.org/10.1016/j.ijcard.2003.10.007
  6. Windecker, S., Simon, R., Lins, M., Klauss, V., Eberli, F. R., Roffi, M., Pedrazzini, G., Moccetti, T., Wenaweser, P., Togni, M., Meier, B. and Hess, O. M., "Randomized Comparison of a Titanium-Nitride- Oxide-coated Stent with a Stainless steel Stent for coronary Revasculations : The TiNOX Trial," ACC Current J. Review, Vol. 14, No. 9, p. 43, 2005.
  7. Mosseri, M., Tamari, I., Plich, M., Hasin, Y., Brizines, M., Frimerman, A., Miller, H., Jafari, J., Guetta, V., Solomon, M. and Lotan, C., "Short and Long Term Outcome of the Titanium-NO stent Registry," Cardiovascular Revascularization Medicine, Vol. 6, No. 1, pp. 2-6, 2005. https://doi.org/10.1016/j.carrev.2005.04.004
  8. Takebayashi, H., Kobayashi, Y., Mintz, G. S., Carlier, S. G., Fujii, K., Yasuda, T., Moussa, I., Mehran, R., Dangas, G. D., Collins, M. B., Kreps, E., Lansky, A. J., Stone, G. W., Leon, M. B. and Moses, J. W., "Intravascular ultrasound assessment of lesions with target vessel failure after sirolimus-eluting stent implantation," Am. J. Cardiol., Vol. 95, No. 4, pp. 498-502, 2005. https://doi.org/10.1016/j.amjcard.2004.10.020
  9. Gervaso, F., Capelli, C., Petrini, L., Lattanzio, S., Virgilio, L. D. and Migliavacca, F., "On the effects of different strategies in modeling balloon-expandable stenting by means of finite element method," Journal of Biomechanics, Vol. 41, No. 6, pp. 1206-1212, 2008. https://doi.org/10.1016/j.jbiomech.2008.01.027
  10. Capelli, C., Gervaso, F., Petrini, L., Dubini, G. and Migliavacca, F., "Assessment of tissue prolapsed after baaoon-expandable stenting : Influence of stent cell geometry," Medical Engineering & Physics, Vol. 31, No. 4, pp. 441-447, 2009. https://doi.org/10.1016/j.medengphy.2008.11.002
  11. Ju, F., Xia, Z. and Sasaki, K., "On the finite element modeling of balloon-expandable stents," Journal of the Mechanical Behavior of Biomedical Materials, Vol. 1, No. 1, pp. 86-95, 2008. https://doi.org/10.1016/j.jmbbm.2007.07.002
  12. Holzapfel, G. A., Stadler, M. and Schulze Bauer, C. A. J., "Soft tissue mechanics," 13th Conference of the European Society of Biomechanics, 2002.
  13. Oh, B. K. and Cho, H. Y., "Finite Element Analysis of Stent Expansion Considering Stent-Balloon Interaction," Journal of KSME A, Vol. 29, No. 1, pp. 159-162, 2005. https://doi.org/10.3795/KSME-A.2005.29.1.156
  14. Shin, S. J., Lee, T. S. and Oh, S. I., "Threedimensional Finite Element Analysis of Rubber Pad Deformation-Part I : Development of Implicit and Explicit Methods," Journal of KSME A, Vol. 22, No. 1, pp. 111-120, 1998.
  15. Shin, S. J., Lee, T. S. and Oh, S. I., "Threedimensional Finite Element Analysis of Rubber Pad Deformation-Part II : Applications," Journal of KSME A, Vol. 22, No. 1, pp. 121-131, 1998.