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Evaluation of the Effect of Stent Strut Profile on Shear Stress Distribution

[+] Author Affiliations
Bilal Ruzzeh, Rosaire Mongrain, Richard Leask

McGill University, Montreal, QC, Canada

Olivier Bertrand

Laval Hospital

Paper No. SBC2007-177056, pp. 773-774; 2 pages
doi:10.1115/SBC2007-177056
From:
  • ASME 2007 Summer Bioengineering Conference
  • ASME 2007 Summer Bioengineering Conference
  • Keystone, Colorado, USA, June 20–24, 2007
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-4798-5
  • Copyright © 2007 by ASME

abstract

In this work, we present a 2D numerical flow study to analyze the impact of different stent strut profiles on the shear stress distribution for stented coronary arteries. In that context, five cross-sectional profiles were considered: square, circular, elliptical, and a two tear-drop shapes. Specific performance metrics based on the statistical moments were developed to assess the variation of shear stress distributions along the wall with respected to a normal reference condition (non-stented segment). The results show that stent strut profile significantly affects the shear stress distribution along the wall. It also demonstrate that more streamline profiles such as the tear-drop and elliptical profiles exhibit better performance than the standard square and circular profiles for shear stress.

Copyright © 2007 by ASME

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