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Numerical Analysis of a Novel External Support Device for Vein Bypass Grafts

  • T. Meirson
  • E. Orion
  • G. Bolotin
  • M. Brand
  • I. Avrahami
Conference paper
  • 119 Downloads
Part of the IFMBE Proceedings book series (IFMBE, volume 41)

Abstract

This paper presents a numerical analysis of a novel external support device for coronary artery bypass graft (CABG). The analysis includes the fluid and the structural dynamics of vein grafts with and without an external support device (ESD). Six different vein grafts geometries were modeled under time-dependent physiological conditions. The hemodynamics and the stresses developed at the graft wall were analyzed on patient based geometries 12 months post-transplantation.

Results: veins under constriction of ESD were associated with higher wall shear stresses, lower shear gradients, uniform flow and lower structural effective stresses.

In conclusion, these findings suggest that constricted graft with ESD improves hemodynamic and structural factors which are correlated to graft failure following CABG procedure.

Keywords

ESD CABG saphenous vein CFD FEM 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • T. Meirson
    • 1
  • E. Orion
    • 2
  • G. Bolotin
    • 3
  • M. Brand
    • 4
  • I. Avrahami
    • 4
  1. 1.Medical EngineeringAfeka Academic College of EngineeringTel AvivIsrael
  2. 2.Vascular Graft Solutions LtdTel AvivIsrael
  3. 3.Cardiac SurgeryRambam Health Care CampusHaifaIsrael
  4. 4.Mechanical Engineering and MechatronicsAriel UniversityArielIsrael

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