Biomechanical analysis of the interaction phenomena between artificial urinary sphincter and urethral duct.
artificial urinary sphincter
computational biomechanics
constitutive formulation
experimental testing
urethra biomechanics
Journal
International journal for numerical methods in biomedical engineering
ISSN: 2040-7947
Titre abrégé: Int J Numer Method Biomed Eng
Pays: England
ID NLM: 101530293
Informations de publication
Date de publication:
03 2020
03 2020
Historique:
received:
25
07
2019
revised:
27
11
2019
accepted:
10
01
2020
pubmed:
17
1
2020
medline:
5
2
2021
entrez:
17
1
2020
Statut:
ppublish
Résumé
Male urinary incontinence is a widespread healthcare problem, leading to a miserable quality of life. Artificial urinary sphincter (AUS) is a device inserted mostly around the urethra in adult males, which mimics the urinary sphincter by providing a closure during urinary storage and a subsequent open to permit voiding. The interaction phenomena occurring between AUS cuff and urethral duct represent a fundamental problem in the investigation of AUS reliability and durability. In this work, computational methods are exploited to deeply investigate the mechanics of interaction phenomena occurring between urethral duct and AUS device. Experimental studies are performed on urethral tissues, and structural tests are carried out on the overall urethral duct to obtain a large set of information required for mechanical properties definition. The mechanical behavior of AUS cuff is investigated using mechanical and physicochemical procedures. The cuff conformation is acquired by computed tomography techniques for the definition of the numerical model. Numerical analyses are developed to evaluate the mechanical response of urethral duct in interaction with AUS cuff, considering the lumen occlusion process for maintaining urinary continence. Finally, the investigation of the compressive stress and strain fields within urethral tissues allows the identification of device performance and reliability in correlation with surgical practice.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e3308Informations de copyright
© 2020 John Wiley & Sons, Ltd.
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