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Article

Characterisation of a Cold Atmospheric Pressure Plasma Torch for Medical Applications: Demonstration of Device Safety

1
Surface Engineering and Precision Institute, Cranfield University, Cranfield MK43 0AL, UK
2
Cranfield Plasma Solutions Ltd., Burton Latimer NN15 5PX, UK
3
Adtec Plasma Technology Co., Ltd., Fukuyama, Hiroshima 712-0942, Japan
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Electro-Optics and Remote Sensing Group, CEWIC, Cranfield University, Shrivenham SN6 8LA, UK
5
Institute of Materials and Processes, The University of Edinburgh, Edinburgh EH9 3FB, UK
*
Author to whom correspondence should be addressed.
Academic Editors: Sander Bekeschus and Anke Schmidt
Appl. Sci. 2021, 11(24), 11864; https://doi.org/10.3390/app112411864
Received: 6 November 2021 / Revised: 8 December 2021 / Accepted: 10 December 2021 / Published: 14 December 2021
(This article belongs to the Special Issue Gas Plasma Technology in Biology and Medicine)
The safety and effectiveness of plasma devices are of crucial importance for medical applications. This study presents the novel design of an atmospheric plasma torch (SteriPlas) and its characterisation. The SteriPlas was characterised to ascertain whether it is safe for application on human skin. The emission spectrum discharged from the SteriPlas was shown to be the same as the emission from the MicroPlaSter Beta. The UV emitted from the SteriPlas was measured, and the effective irradiance was calculated. The effective irradiance enabled the determination of the maximum UV exposure limits, which were shown to be over two hours: significantly longer than the current two-minute treatment time. The use of an extraction system with a higher flow rate appears to reduce slightly the effective irradiance at the treatment area. The NOx and ozone emissions were recorded for both SteriPlas configurations. The NOx levels were shown to be orders of magnitude lower than their safety limits. The ozone emissions were shown to be safe 25 mm from the SteriPlas cage. A discussion of how safety standards differ from one regulatory body to another is given. View Full-Text
Keywords: cold atmospheric plasma; biological and physical characterisation; plasma medicine; ultraviolet (UV); reactive oxygen nitrogen species (RONS); wound management; anti-bacterial; plasma healthcare; safety standards cold atmospheric plasma; biological and physical characterisation; plasma medicine; ultraviolet (UV); reactive oxygen nitrogen species (RONS); wound management; anti-bacterial; plasma healthcare; safety standards
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MDPI and ACS Style

Bennett, A.; Urayama, T.; Papangelis, K.; Yuen, P.; Yu, N. Characterisation of a Cold Atmospheric Pressure Plasma Torch for Medical Applications: Demonstration of Device Safety. Appl. Sci. 2021, 11, 11864. https://doi.org/10.3390/app112411864

AMA Style

Bennett A, Urayama T, Papangelis K, Yuen P, Yu N. Characterisation of a Cold Atmospheric Pressure Plasma Torch for Medical Applications: Demonstration of Device Safety. Applied Sciences. 2021; 11(24):11864. https://doi.org/10.3390/app112411864

Chicago/Turabian Style

Bennett, Adam, Takuya Urayama, Konstantinos Papangelis, Peter Yuen, and Nan Yu. 2021. "Characterisation of a Cold Atmospheric Pressure Plasma Torch for Medical Applications: Demonstration of Device Safety" Applied Sciences 11, no. 24: 11864. https://doi.org/10.3390/app112411864

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