The interactions between bloodstream and vascular structure on aortic dissecting aneurysmal model: A numerical study |
| |
Authors: | Zeng-Sheng Chen Zhan-Ming Fan Xi-Wen Zhang |
| |
Institution: | 126. Department of Engineering Mechanics, School of Aerospace, Tsinghua University, 100084, Beijing, China 226. Institute of Heart, Pulmonary & Vascular Diseases, Capital University of Medical Science Affiliated Beijing Anzhen Hospital, 100029, Beijing, China
|
| |
Abstract: | Stent-graft implantation is an important means of clinical treatment for aortic dissecting aneurysm (ADA). However, researches on fluid dynamics effects of stent were rare. Computer simulation was used to investigate the interactions between bloodstream and vascular structure in a stented ADA, which endures the periodic pulse velocity and pressure. We obtained and analyzed the flow velocity distribution, the wall displacement and wall stress in the ADA. By comparing the different results between a non-stented and a stented ADA, we found that the insertion of a vascular graft can make the location of maximum stress and displacement move from the aneurysm lumen wall to the artery wall, accompanied with a greatly decrease in value. These results imply that the placement of a stent-graft of any kind to occlude ADA will result in a decreased chance of rupture. |
| |
Keywords: | Aortic dissecting aneurysm (ADA) · Stent-graft · Fluid-structure interaction (FIS) |
本文献已被 CNKI 维普 SpringerLink 等数据库收录! |
|