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contributor authorM. Malvè
contributor authorA. Pérez del Palomar
contributor authorS. Chandra
contributor authorJ. L. López-Villalobos
contributor authorE. A. Finol
contributor authorA. Ginel
contributor authorM. Doblaré
date accessioned2017-05-09T00:42:25Z
date available2017-05-09T00:42:25Z
date copyrightJuly, 2011
date issued2011
identifier issn0148-0731
identifier otherJBENDY-27212#071003_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/145413
description abstractIn this work we analyzed the response of a stenotic trachea after a stent implantation. An endotracheal stent is the common treatment for tracheal diseases such as stenosis, chronic cough, or dispnoea episodes. Medical treatment and surgical techniques are still challenging due to the difficulties in overcoming potential complications after prosthesis implantation. A finite element model of a diseased and stented trachea was developed starting from a patient specific computerized tomography (CT) scan. The tracheal wall was modeled as a fiber reinforced hyperelastic material in which we modeled the anisotropy due to the orientation of the collagen fibers. Deformations of the tracheal cartilage rings and of the muscular membrane, as well as the maximum principal stresses, are analyzed using a fluid solid interaction (FSI) approach. For this reason, as boundary conditions, impedance-based pressure waveforms were computed modeling the nonreconstructed vessels as a binary fractal network. The results showed that the presence of the stent prevents tracheal muscle deflections and indicated a local recirculatory flow on the stent top surface which may play a role in the process of mucous accumulation. The present work gives new insight into clinical procedures, predicting their mechanical consequences. This tool could be used in the future as preoperative planning software to help the thoracic surgeons in deciding the optimal prosthesis type as well as its size and positioning.
publisherThe American Society of Mechanical Engineers (ASME)
titleFSI Analysis of a Human Trachea Before and After Prosthesis Implantation
typeJournal Paper
journal volume133
journal issue7
journal titleJournal of Biomechanical Engineering
identifier doi10.1115/1.4004315
journal fristpage71003
identifier eissn1528-8951
keywordsFlow (Dynamics)
keywordsProstheses
keywordsTrachea
keywordsFluid structure interaction
keywordsstents
keywordsImpedance (Electricity)
keywordsMuscle
keywordsModeling
keywordsPressure
keywordsStress
keywordsFluids AND Deflection
treeJournal of Biomechanical Engineering:;2011:;volume( 133 ):;issue: 007
contenttypeFulltext


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