Effect of Iliac Vein Stent with Crown on Flow Field of Bifurcation

WenYing; Haiquan Feng; Xiaoqiang Li; Xiaotian Wang; Ping Cao; Yonggang Wang

doi:10.5293/IJFMS.2020.13.2.517

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자료유형: 학술저널

저자정보: WenYing (Inner Mongolia University of Technology) Haiquan Feng (Inner Mongolia University of Technology) Xiaoqiang Li (Affiliated Drum Tower Hospital of Nanjing University Medical School) Xiaotian Wang (The First Affiliated Hospital of University of Science and Technology of China Hefei) Ping Cao (Shenzhen Medical Device Testing Center) Yonggang Wang (Suzhou Venmed Technology)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.13 No.2

발행연도: 2020.6

수록면: 517 - 525 (9page)

DOI: 10.5293/IJFMS.2020.13.2.517

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Interference in blood flow at bifurcation after stent implantation is one of the important causes of thrombosis. Therefore, it is necessary to research the effects of stent structure and implantation position on hemodynamics. Computational fluid dynamics and experimental comparative research methods were used to analyze the influence of stent structure and position of stent on exit velocity, pressure difference between inlet and outlet, higher and lower wall shear stress areas and contralateral flow field. It is indicated in the research that the effect of iliac vein stent implantation on the flow velocity and pressure distribution at the outlet is not obvious, but stent implantation has an influence on the proportion of low wall shear stress and high wall shear stress area in the iliac vein. The low wall shear stress area is inversely proportional to the height of the stent. After stent is implanted, proportion of the high wall shear stress area will decrease, but the degree of decline is not obvious. As the height of stent is increased, the disturbing effect of stent on contralateral blood flow becomes more pronounced. In addition, it is confirmed by the experiments in vitro and in vivo that stent with crown would effectively reduce the interference to the contralateral flow field and the risk of thrombosis and restenosis. Finite element analysis provides effective theoretical support for studying the influence of iliac vein stent implantation on blood flow field.

#Iliac vein stent #hemodynamics #wall shear stress #flow field #crown

참고문헌 (16)

참고문헌 신청

Bai, F. / 2013 / Recent Development and Application of Hemodynamics / Journal of Medical Biomechanics 28(6):677~683

Alhakim, R. / 2017 / Hemodynamic Analysis of Edge Stenosis in Peripheral Artery Stent Grafts / Diagnostic & Interventional Imaging 98(10):729~735

Beier, S. / 2016 / 2016 Hemodynamics in Idealized Stented Coronary Arteries: Important Stent Design Considerations / Annals of Biomedical Engineering 44(2):315~329

Feng, H. Q. / 2018 / CN Patent No. 201610268333.1

Wang, X. T. / 2017 / CN. Patent No.201610267898.8

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