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Magnetic retraction of bowel by intraluminal injectable cyanoacrylate-based magnetic glue

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526512.pdf (3.639Mb)
Date
10/2013
Author
Wang, Zhigang
Brown, Andrew
André, Pascal
Brown, Stuart
Florence, Gordon John
Cuschieri, Alfred
Keywords
Characterisation
Magnetic particles
Cyanoacrylate glue
Heat generation
Magnetic bowel retraction
Force measurement
Minimal access surgery
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Abstract
Magnetic retraction offers advantages over physical retraction by graspers because of reduced tissue trauma. The objectives of this study are to investigate a novel method of magnetisation of bowel segments by intraluminal injection of magnetic glue and to demonstrate the feasibility of magnetic retraction of bowel with sufficient force during minimal access surgery. Following an initial materials characterisation study, selected micro-particles of stainless steel (SS410-μPs) were mixed with chosen cyanoacrylate glue (Loctite 4014). During intra-luminal injection of the magnetic glue using ex-vivo porcine colonic segments, a magnetic probe placed at the injected site ensured that the SS410-μPs aggregated during glue polymerisation to form an intra-luminal mucosally-adherent coagulum. The magnetised colonic segments were retracted by magnetic probes (5 and 10-mm) placed external to the bowel wall. A tensiometer was used to record the retraction force. With an injected volume of 2mL in a particle concentration of 1 g/mL, this technique produced maximal magnetic retraction forces of 2.24 ± 0.23 N and 5.11 ± 0.34 N (n =20), with use of 5 and 10-mm probes respectively. The results indicate that the formation of an intra-luminal coagulum based on SS410-μPs and Loctite 4014 produces sufficient magnetic retraction for bowel retraction.
Citation
Wang , Z , Brown , A , André , P , Brown , S , Florence , G J & Cuschieri , A 2013 , ' Magnetic retraction of bowel by intraluminal injectable cyanoacrylate-based magnetic glue ' , BioMed Research International , vol. 2013 , 526512 . https://doi.org/10.1155/2013/526512
Publication
BioMed Research International
Status
Peer reviewed
DOI
https://doi.org/10.1155/2013/526512
ISSN
2314-6133
Type
Journal article
Rights
Copyright © 2013 Zhigang Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4462

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