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Proceedings Paper

Thermoelectrical numerical model of electrosurgical rf cutting
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Paper Abstract

We developed a 3D thermo-electrical model of RF tissue cutting that takes into account variations in electrical and thermal properties with temperature and water content, dynamics of water evaporation and thermal and electrical processes at the tissue-scalpel interface. The model predicts measurable parameters of the electric circuit (tissue impedance, ESU output RMS voltage and current) and tissue cutting rate. Results of numerical simulations suggest that high circuit impedance during electrosurgical cutting can result not only from tissue dehydration but from the configuration of the electric field as well. It appears that the area of tissue-scalpel electric contact is significantly smaller than the area of the scalpel itself but is large enough to rule out electric sparks as a major mechanism of electrosurgical cutting.

Paper Details

Date Published: 1 June 2001
PDF: 7 pages
Proc. SPIE 4247, Thermal Treatment of Tissue: Energy Delivery and Assessment, (1 June 2001); doi: 10.1117/12.427860
Show Author Affiliations
Dmitry E. Protsenko, Univ. of Texas at Austin (United States)
John Anthony Pearce, Univ. of Texas at Austin (United States)

Published in SPIE Proceedings Vol. 4247:
Thermal Treatment of Tissue: Energy Delivery and Assessment
Thomas P. Ryan, Editor(s)

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