Assessing the aneurysm occlusion efficacy of a shear-thinning biomaterial in a 3D-printed model.
Catheters
Hydrogels
Minimally invasive
Pseudoaneurysms
Shear-thinning biomaterials
Silicate nanoplatelets
Visceral artery aneurysms
Journal
Journal of the mechanical behavior of biomedical materials
ISSN: 1878-0180
Titre abrégé: J Mech Behav Biomed Mater
Pays: Netherlands
ID NLM: 101322406
Informations de publication
Date de publication:
06 2022
06 2022
Historique:
received:
11
07
2021
revised:
13
02
2022
accepted:
27
02
2022
pubmed:
10
4
2022
medline:
22
4
2022
entrez:
9
4
2022
Statut:
ppublish
Résumé
Metallic coil embolization is a common method for the endovascular treatment of visceral artery aneurysms (VAA) and visceral artery pseudoaneurysms (VAPA); however, this treatment is suboptimal due to the high cost of coils, incomplete volume occlusion, poor reendothelialization, aneurysm puncture, and coil migration. Several alternative treatment strategies are available, including stent flow diverters, glue embolics, gelfoam slurries, and vascular mesh plugs-each of which have their own disadvantages. Here, we investigated the in vitro capability of a shear-thinning biomaterial (STB), a nanocomposite hydrogel composed of gelatin and silicate nanoplatelets, for the minimally-invasive occlusion of simple necked aneurysm models. We demonstrated the injectability of STB through various clinical catheters, engineered an in vitro testing apparatus to independently manipulate aneurysm neck diameter, fluid flow rate, and flow waveform, and tested the stability of STB within the models under various conditions. Our experiments show that STB is able to withstand at least 1.89 Pa of wall shear stress, as estimated by computational fluid dynamics. STB is also able to withstand up to 10 mL s
Identifiants
pubmed: 35397405
pii: S1751-6161(22)00078-9
doi: 10.1016/j.jmbbm.2022.105156
pmc: PMC9060636
mid: NIHMS1795351
pii:
doi:
Substances chimiques
Biocompatible Materials
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
105156Subventions
Organisme : NHLBI NIH HHS
ID : R01 HL140951
Pays : United States
Organisme : CIHR
Pays : Canada
Informations de copyright
Copyright © 2022 Elsevier Ltd. All rights reserved.
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