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A Finite Element Approach for Evaluating the Risk of Endograft Migration

[+] Author Affiliations
Anamika Prasad, Christopher K. Zarins, C. Alberto Figueroa

Stanford University, Stanford, CA

Paper No. BioMed2011-66022, pp. 11-12; 2 pages
doi:10.1115/BioMed2011-66022
From:
  • ASME 2011 6th Frontiers in Biomedical Devices Conference
  • ASME 2011 6th Frontiers in Biomedical Devices Conference and Exhibition
  • Irvine, California, USA, September 26–27, 2011
  • Conference Sponsors: Bioengineering Division
  • Copyright © 2011 by ASME

abstract

Evaluating the risk of endograft migration is important for long-term durability of endovascular aneurysm repair (EVAR) technique. In this paper we apply a step-wise coupled finite element approach to evaluate the risk of endograft migration in representative aorta models subjected to in-vivo hemodynamic displacement forces. Device stability is observed to be a strong function of aortic geometry (tortuosity, proximal fixation) with increased tortuosity or lower proximal fixation leading to greater risk of device migration.

Copyright © 2011 by ASME

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