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A biomechanically optimized knitted stent using a bio-inspired design approach

Singh, Charanpreet and Wang, Xungai 2016, A biomechanically optimized knitted stent using a bio-inspired design approach, Textile research journal, vol. 86, no. 4, pp. 380-392, doi: 10.1177/0040517515590413.

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Title A biomechanically optimized knitted stent using a bio-inspired design approach
Author(s) Singh, Charanpreet
Wang, Xungai
Journal name Textile research journal
Volume number 86
Issue number 4
Start page 380
End page 392
Total pages 13
Publisher Sage Publications
Place of publication London, Eng.
Publication date 2016-03
ISSN 0040-5175
1746-7748
Keyword(s) knitting
stent
compliance
biomechanics
segmentation
Summary Vascular implants have always been a key area of research in medical textiles. Knitted structures have been proven to be suitable for stent applications on the basis of their looped mesh geometry, structural flexibility and ease of manufacturing. However, there are biomechanical constraints of plain knit constructions that can result in clinical complications after implantation and hence cannot be ignored. This study reports a new segmented knit design inspired by structural metamerism observed in the body design of some invertebrate animals. Metamerism is the phenomenon of having a linear series of body segments fundamentally similar in structure, but assigned to perform different functions. It was hypothesized that utilization of this simple and yet effective biological design approach in stent construction could improve the degree of control for optimizing stent biomechanical properties. The proposed segmented stent was constructed by incorporating an elastic filament component into a polyethylene terephthalate knitted stent at specific intervals along its length, also known as the ‘Plating Technique’. This technique generates a structure with alternately arranged stiff and elastic knitted sections which equip the stent with vital structural support and volumetric compliance properties, respectively. The stent design parameters (filament diameter, loop length, segmentation plan) were optimized to achieve significantly better biomechanical performance (bending flexibility, compression resistance, volumetric expansion, longitudinal extensibility) than a plain knit stent.
Language eng
DOI 10.1177/0040517515590413
Field of Research 119999 Medical and Health Sciences not elsewhere classified
091012 Textile Technology
0910 Manufacturing Engineering
0912 Materials Engineering
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083410

Document type: Journal Article
Collection: Institute for Frontier Materials
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Created: Thu, 12 May 2016, 08:43:17 EST

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