Guidelines for tracheal stent costumization and implantation

One of the treatments of tracheal stenosis is by stent implantation to reopen the constricted trachea lumen. However, post-stenting complications such as stent migration has been reported. This migration is due to undersized implanted stent. On the other hand, oversized implanted stent may pose exce...

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Main Author:	Hamid, Mohd. Norhakem
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/101413/1/MohdNorhakemHamidPSKM2022.pdf
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id	my-utm-ep.101413
record_format	uketd_dc
spelling	my-utm-ep.1014132023-06-14T10:10:16Z Guidelines for tracheal stent costumization and implantation 2022 Hamid, Mohd. Norhakem TJ Mechanical engineering and machinery One of the treatments of tracheal stenosis is by stent implantation to reopen the constricted trachea lumen. However, post-stenting complications such as stent migration has been reported. This migration is due to undersized implanted stent. On the other hand, oversized implanted stent may pose excessive stress onto the wall of the trachea. Therefore, there is a need to customize the stent size according to the patients’ requirements. Thus, this thesis proposes a correlation of a customized stent that addresses the two problems mentioned. The analysis of a healthy trachea is performed and the effect of the different locations of the stenosis is investigated. Then, the effects of implantations of selected stents are numerically studied. The stents are also subjected to several mechanical testing for failure analysis. The results show that the developed stent is able to withstand various mechanical loads and deformation. The currently developed stent performed better than that of the commercial stent by at least 60 percent in bending test, 10 percent in radial compression test and 15 percent in torsional test. The stent is then tested at various tracheal stenosis locations. For a stenosed trachea, the location of the stenosis at the bottom part will pose the highest risk to breathing problems. Post-stenting results show that the developed stent is able to revert the flow inside the trachea to the original flow conditions. The flow rate distributions to the right bronchus were reduced by more than 30 percent as compared to flow rate distributions in healthy trachea. Finally, a correlation is proposed to enable stent customization that best fits patients’ requirements. This customized stent is predicted to be able to address the stent migration problem and excessive stress exerted to the trachea wall. 2022 Thesis http://eprints.utm.my/id/eprint/101413/ http://eprints.utm.my/id/eprint/101413/1/MohdNorhakemHamidPSKM2022.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:151568 phd doctoral Universiti Teknologi Malaysia Faculty of Engineering - School of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Hamid, Mohd. Norhakem Guidelines for tracheal stent costumization and implantation
description	One of the treatments of tracheal stenosis is by stent implantation to reopen the constricted trachea lumen. However, post-stenting complications such as stent migration has been reported. This migration is due to undersized implanted stent. On the other hand, oversized implanted stent may pose excessive stress onto the wall of the trachea. Therefore, there is a need to customize the stent size according to the patients’ requirements. Thus, this thesis proposes a correlation of a customized stent that addresses the two problems mentioned. The analysis of a healthy trachea is performed and the effect of the different locations of the stenosis is investigated. Then, the effects of implantations of selected stents are numerically studied. The stents are also subjected to several mechanical testing for failure analysis. The results show that the developed stent is able to withstand various mechanical loads and deformation. The currently developed stent performed better than that of the commercial stent by at least 60 percent in bending test, 10 percent in radial compression test and 15 percent in torsional test. The stent is then tested at various tracheal stenosis locations. For a stenosed trachea, the location of the stenosis at the bottom part will pose the highest risk to breathing problems. Post-stenting results show that the developed stent is able to revert the flow inside the trachea to the original flow conditions. The flow rate distributions to the right bronchus were reduced by more than 30 percent as compared to flow rate distributions in healthy trachea. Finally, a correlation is proposed to enable stent customization that best fits patients’ requirements. This customized stent is predicted to be able to address the stent migration problem and excessive stress exerted to the trachea wall.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Hamid, Mohd. Norhakem
author_facet	Hamid, Mohd. Norhakem
author_sort	Hamid, Mohd. Norhakem
title	Guidelines for tracheal stent costumization and implantation
title_short	Guidelines for tracheal stent costumization and implantation
title_full	Guidelines for tracheal stent costumization and implantation
title_fullStr	Guidelines for tracheal stent costumization and implantation
title_full_unstemmed	Guidelines for tracheal stent costumization and implantation
title_sort	guidelines for tracheal stent costumization and implantation
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Mechanical Engineering
publishDate	2022
url	http://eprints.utm.my/id/eprint/101413/1/MohdNorhakemHamidPSKM2022.pdf
_version_	1776100695192109056

Guidelines for tracheal stent costumization and implantation

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