LAPSE:2021.0666
Published Article
LAPSE:2021.0666
Switching Monopolar Mode for RF-Assisted Resection and Superficial Ablation of Biological Tissue: Computational Modeling and Ex Vivo Experiments
Jorge Yaulema, Jose Bon, M. Carmen Gómez-Collado, Juan José Pérez, Enrique Berjano, Macarena Trujillo
July 29, 2021
Radiofrequency (RF)-based monopolar (MM) and bipolar mode (BM) applicators are used to thermally create coagulation zones (CZs) in biological tissues with the aim of destroying surface tumors and minimizing blood losses in surgical resection. Both modes have disadvantages as regards safely and in obtaining a sufficiently deep coagulation zone (CZ). In this study, we compared both modes versus a switching monopolar mode (SMM) in which the role of the active electrode changes intermittently between the two electrodes of the applicator. In terms of clinical impact, the three modes can easily be selected by the surgeon according to the surgical maneuver. We used computational and experimental models to study the feasibility of working in MM, BM, and SMM and to compare their CZ characteristics. We focused exclusively on BM and SMM, since MM only creates small coagulation zones in the area between the electrodes. The results showed that SMM produces the deepest CZ between both electrodes (33% more than BM) and SMM did not stop the generator when an electrode lost contact with the tissue, as occurred in BM. Our findings suggest that the selective use of SMM and BM with a bipolar applicator offers greater advantages than using each type alone.
Keywords
bipolar RF mode, computational RF model, RF superficial ablation, RF-assisted surgical resection, switching monopolar RF mode
Subject
Suggested Citation
Yaulema J, Bon J, Gómez-Collado MC, Pérez JJ, Berjano E, Trujillo M. Switching Monopolar Mode for RF-Assisted Resection and Superficial Ablation of Biological Tissue: Computational Modeling and Ex Vivo Experiments. (2021). LAPSE:2021.0666
Author Affiliations
Yaulema J: Facultad de Ciencias, Escuela Superior Politécnica de Chimborazo, 060155 Riobamba, Ecuador
Bon J: Food Technology Department, Universitat Politècnica de València, 46022 València, Spain
Gómez-Collado MC: Instituto Universitario de Matemática Pura y Aplicada, Universitat Politècnica de València, 46022 València, Spain
Pérez JJ: BioMIT, Department of Electronic Engineering, Universitat Politècnica de València, 46022 València, Spain
Berjano E: BioMIT, Department of Electronic Engineering, Universitat Politècnica de València, 46022 València, Spain
Trujillo M: BioMIT, Department of Applied Mathematics, Universitat Politècnica de València, 46022 València, Spain
Journal Name
Processes
Volume
8
Issue
12
Article Number
E1660
Year
2020
Publication Date
2020-12-16
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr8121660, Publication Type: Journal Article
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LAPSE:2021.0666
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doi:10.3390/pr8121660
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Jul 29, 2021
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CC BY 4.0
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[v1] (Original Submission)
Jul 29, 2021
 
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Jul 29, 2021
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https://psecommunity.org/LAPSE:2021.0666
 
Original Submitter
Calvin Tsay
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