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- W2955226475 abstract "Abstract Ultrashort pulse lasers offer great promise for tissue resection with exceptional precision and minimal thermal damage. Surgery in the bowel requires high precision and minimal necrotic tissue to avoid severe complications such as perforation. The deployment of ultrashort lasers in minimally invasive or endoscopic procedures has been hindered by the lack of suitable optical fibres for high peak powers. However, recent developments of hollow core microstructured fibres provide potential for delivery of such pulses throughout the body. In this study, analysis of laser ablation via a scanning galvanometer on a porcine colon tissue model is presented. A thermally damaged region (<85 μm) and fine depth control of ablation using the pulse energies 46 and 33 μJ are demonstrated. It is further demonstrated that such pulses suitable for precision porcine colon resection can be flexibly delivered via a hollow core negative curvature fibre (HC‐NCF) and again ablation depth can be controlled with a thermally damaged region <85 μm. Ablation volumes are comparable to that of early stage lesions in the inner lining of the colon. This study concludes that the combination of ultrashort pulses and flexible fibre delivery via HC‐NCF present a viable route to new minimally invasive surgical procedures." @default.
- W2955226475 created "2019-07-12" @default.
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- W2955226475 date "2019-07-25" @default.
- W2955226475 modified "2023-10-16" @default.
- W2955226475 title "Preclinical evaluation of porcine colon resection using hollow core negative curvature fibre delivered ultrafast laser pulses" @default.
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- W2955226475 doi "https://doi.org/10.1002/jbio.201900055" @default.
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