loading page

Finite Element Modeling and Experimental Validation of a z-Type Self-Expanding Endovascular Stent
  • Joel Scott,
  • Darrel Doman,
  • Clifton Johnston
Joel Scott
Dalhousie University

Corresponding Author:[email protected]

Author Profile
Darrel Doman
Dalhousie University
Author Profile
Clifton Johnston
Dalhousie University
Author Profile


Stent migration due to haemodynamic drag remains the primary cause of type I endoleak, potentially leading to aneurysm rupture. The prevalence of migration and endoleak can be partially attributed to deficiencies in stent-graft radial spring design and a lack in understanding of the mechanical properties of endovascular stents. A converged finite element model of a custom radial extensometer was developed, fit, and validated using experimental results for bare stent wire (”uncovered”) with outer diameter of 12 mm stent. During stent constriction to 50 % of the original cross- sectional area, a comparison of experimental and modeled results produced an r2 value of 0.946, a standard error of 0.099 N, and a mean percent error of 1.69 %. This validated finite element model can be used to analyze the mechanisms responsible for radial force generation in 316L stainless steel self-expanding endovascular stents, as well as to evaluate new stent designs.
29 Jun 2021Submitted to Engineering Reports
13 Jul 2021Submission Checks Completed
13 Jul 2021Assigned to Editor
06 Sep 20211st Revision Received
08 Sep 2021Assigned to Editor
08 Sep 2021Submission Checks Completed
08 Sep 2021Reviewer(s) Assigned
01 Oct 2021Editorial Decision: Revise Minor
11 Oct 20212nd Revision Received
11 Oct 2021Submission Checks Completed
11 Oct 2021Assigned to Editor
11 Oct 2021Reviewer(s) Assigned
11 Nov 2021Editorial Decision: Accept