Thermoset Shape Memory Polymer Variable Stiffness 4D Robotic Catheters.
catheters
composite materials
shape memory polymers
thermoset polymers
variable stiffness
Journal
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
ISSN: 2198-3844
Titre abrégé: Adv Sci (Weinh)
Pays: Germany
ID NLM: 101664569
Informations de publication
Date de publication:
01 2022
01 2022
Historique:
received:
02
08
2021
pubmed:
2
11
2021
medline:
15
3
2022
entrez:
1
11
2021
Statut:
ppublish
Résumé
Variable stiffness catheters are typically composed of an encapsulated core. The core is usually composed of a low melting point alloy (LMPA) or a thermoplastic polymer (TP). In both cases, there is a need to encapsulate the core with an elastic material. This imposes a limit to the volume of variable stiffness (VS) material and limits miniaturization. This paper proposes a new approach that relies on the use of thermosetting materials. The variable stiffness catheter (VSC) proposed in this work eliminates the necessity for an encapsulation layer and is made of a unique biocompatible thermoset polymer with an embedded heating system. This significantly reduces the final diameter, improves manufacturability, and increases safety in the event of complications. The device can be scaled to sub-millimeter dimensions, while maintaining a high stiffness change. In addition, integration into a magnetic actuation system allows for precise actuation of one or multiple tools.
Identifiants
pubmed: 34723442
doi: 10.1002/advs.202103277
pmc: PMC8728812
doi:
Substances chimiques
Smart Materials
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2103277Subventions
Organisme : European Research Council
ID : 743217
Pays : International
Organisme : European Research Council
ID : 771565
Pays : International
Informations de copyright
© 2021 The Authors. Advanced Science published by Wiley-VCH GmbH.
Références
Ann Biomed Eng. 2014 Apr;42(4):697-715
pubmed: 24281653
Soft Robot. 2019 Aug;6(4):423-443
pubmed: 30920355
Adv Sci (Weinh). 2022 Jan;9(1):e2103277
pubmed: 34723442
Adv Mater. 2016 Dec;28(46):10142-10148
pubmed: 27689347
iScience. 2020 Dec 11;24(1):101934
pubmed: 33392482
IEEE Pulse. 2010 Nov-Dec;1(3):26-41
pubmed: 21097368
Int J Comput Assist Radiol Surg. 2018 May;13(5):671-682
pubmed: 29520525
Sci Robot. 2018 May 30;3(18):
pubmed: 33141711
Adv Sci (Weinh). 2017 Jul 26;4(11):1700143
pubmed: 29201606
ACS Nano. 2018 Apr 24;12(4):3487-3501
pubmed: 29630352