Hila Ben Gur
School of Mechanical Engineering Faculty of Engineering, Tel Aviv University Tel Aviv, Israel
Moshe Halak
Department of Vascular Surgery, The Chaim Sheba Medical Center, Tel Hashomer, Israel
Moshe Brand
Department of Mechanical Engineering and Mechatronics, Faculty of Engineering, Ariel University, Ariel, Israel
Download article
http://dx.doi.org/10.3384/ecp17142667Published in: Proceedings of The 9th EUROSIM Congress on Modelling and Simulation, EUROSIM 2016, The 57th SIMS Conference on Simulation and Modelling SIMS 2016
Linköping Electronic Conference Proceedings 142:97, p. 667-672
Published: 2018-12-19
ISBN: 978-91-7685-399-3
ISSN: 1650-3686 (print), 1650-3740 (online)
Aortic aneurysms are a main death cause in the elderly population throughout the western world. In recent years, more aneurysm repairs are performed endovascularly using stent grafts (SGs) inserted into the aneurysm site through the arterial system (minimally invasive). In this study, we analyze the hemodynamics in an aneurysmatic abdominal aorta (AAA) endovascularly repaired by a stent graft (SG) system using the chimney technique. Computational fluid dynamics (CFD) is employed to study models of a healthy aorta versus an aorta post ’chimney’ endovascular aneurysm repair (ChEVAR) using chimney stent grafts (CSG) inserted into each renal artery in parallel to the aortic SG. Results demonstrate that the presence of the CSGs results in stagnation regions and wall shear stress (WSS) modifications, yet the flow regime remains laminar. Thus, indicating the spatially contained effects of the ChEVAR technique and further supporting its merit.
ChEVAR, abdominal aortic aneurysm (AAA), chimney stent grafts (CSG), computational fluid dynamics (CFD), hemodynamics, wall shear stresses (WSS)
