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ISSN: 2329-6925

Journal of Vascular Medicine & Surgery
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Research Article

Characterization of the Mechanical Properties of the Human Aortic Arch Using an Expansion Method

Marine Menut1*, Benyebka Bou-Said1, Helene Walter-Le Berre1, Philippe Vézin2 and Leila Ben Boubaker2

1Université de Lyon, INSA-Lyon, LaMCoS UMR5259, F-69621, France

2Université de Lyon, F-69622, Lyon, France ; Université Claude Bernard Lyon 1; IFSTTAR, UMR_T9406, LBMC Laboratoire de Biomécanique et Mécanique des Chocs,F69675, Bronoffoff

*Corresponding Author:
Marine Menut
Universite de Lyon
INSA-Lyon, LaMCoS
UMR5259, F-69621, France
Tel: 33604672008
E-mail: [email protected]

Received Date: February 05, 2015; Accepted Date: February 24, 2015; Published Date: February 26, 2015

Citation: Menut M, Said BB, Berre HWL, Vézin P, Boubaker LB (2015) Characterization of the Mechanical Properties of the Human Aortic Arch Using an Expansion Method. J Vasc Med Surg 3:188. doi:10.4172/2329-6925.1000188

Copyright: © 2015 Menut M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Analyzing cardiovascular diseases leads to multidisciplinary problems which require transversal and complementary approaches. This study focuses on the identification of the mechanical properties of the aortic arch. Stereo-correlation technique is used to measure the strain field in the aortic arch during its expansion. The aorta is immersed in water which allows better results in terms of measurement method and to take into account the residual stress and strain effects. Results are obtained at different values of expansion: 9 samples are collected, 7 of them are frozen before the experiment and 2 are fresh. The mean age is 76 years old at the volunteers? time of death. 4 samples did not lead to conclusive results because of the quality of the arterial wall and leaks that happened during the experiment preventing a proper expansion. The horizontal and vertical displacements are relatively homogeneous for all the samples: two preferred radial and longitudinal directions are observed. The strain fields associated with these directions show heterogeneities and have significant differences between fresh and frozen specimen. The final objective is to perform virtual surgical simulation of the whole endovascular stent graft procedure for an aortic aneurysm. This procedure has a high rate of short-term success and its indication compared to open surgery is increasing but it needs to be more reliable and secure. In this context, it is important to identify the mechanical properties of the aorta for further numerical simulations.

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