Issue 3 (205), article 4


Cybernetics and Computer Engineering, 2021, 3(205)

Senior Teacher of the Biomedical Engineering Department
ORCID: 0000-0003-3009-6421

SHLYKOV V.V.1, DSc (Engineering), Associate Professor,
Нead of the Biomedical Engineering Department
ORCID: 0000-0001-8836-4658

DUBKO A.G.2, PhD (Engineering), Associate Professor,
Researcher of Department of Welding and Related
Technologies in Medicine and Ecology
ORCID: 0000-0001-6070-3945

1National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” 37, . Peremogy av., Kyiv, 03056, Ukraine

“E.O. Paton Electric Welding Institute” 11, Kazimir Malevich str., Kyiv, 03150, Ukraine


Introduction. High-frequency electric welding of biological tissues is an effective method of treatment in surgery. This is an electrosurgical method that minimizes the possibility of the destructive effect of electric current on soft living tissues. The welding method is widely used in general surgery for joining soft tissues where a weld is created when a high frequency electric current is passed through the tissue. With this method, it is possible to carry out serious operations, such as welding of liver tissue, retina, resection of tumor tissue and many other operations. For operations in surgery, it is important to know the optimal parameters of HF- welding, such as welding temperature, mechanical stress on tissues, welding time and voltage.

The purpose of the article is to determinate the optimal conditions for high-frequency welding of living tissues, such as welding temperature, mechanical stress on tissues, welding time and voltage. To determine these parameters, the liver tissue fusion was simulated in the Sinda and Comsol software.

Results. As a result of modeling and research, model dependencies were obtained that determine the optimal parameters of high-frequency welding for performing surgical operations for resection and welding of liver tissue. In the place of direct contact of the electrodes with the tissue, the temperature does not exceed +70 ° C, and at a distance of 2 mm in the adjacent tissues does not exceed +50 °C, which provides a tissue-preserving electrosurgical effect.

Conclusions. The studies have shown that mathematical modeling of heating biological tissue by a split electrode, through which a high-frequency current passes, practically coincides with a real experiment. The optimal conditions for high-frequency welding of living tissues obtained as a result of modeling, such as welding temperature and welding time make it possible to reduce the recovery period after applying the HF-welding method by choosing the optimal coagulation modes.

Keywords: welding of biological tissues, mathematical modeling, temperature, liver, surgery, modeling in Sinda, modeling in Comsol

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1. Lebedev, A.V., Dubko, A.G. Use of Electric Welding of Living Tissues in Surgery (review). Biomed Eng.2020, 54, pp.73-78.

2. Molotkovets, V.Y., Medvediev, V.V., Korsak, A.V. et al. Restoration of the Integrity of a Transected Peripheral Nerve with the Use of an Electric Welding Technology. Neurophysiology. 2020, 52, pp. 31-42 (2020).

3. Vazina, A.A., Vasilieva, A.A., Lanina, N.F. et al. Study of molecular and nanostructural dynamics of biological tissues under the influence of high-frequency electrosurgical welding. Bull. Russ. Acad. Sci. Phys. 2013, 77, pp.146-150.

4. Paton B.E., Lebedev V.K., Lebedev A.V. et al. Method for welding soft tissues of animals and humans: RU229417. Application number: 2003135514/14. Publication date: 2007.02.27

5. Shlykov Vladyslav, Kotovskyi Vitalii, Dubko Andrey, Visniakov, Nikolaj, Sesok Andzela. Temperature monitoring for high frequency welding of soft biological tissues: A prospective study. Technology and Health Care, 2019, vol. Pre-press, no. April, pp. 1-7.

6. Astrium. SINDA User Manual, ver. 3.2., 2003, 895 p.

7. COMSOL Multiphysics Reference Manual, ver.5.5, 2019, 1742 p.

8. Sydorets, V., Dubko, A. The current distribution in the electrodes of electrosurgical instruments during welding of biological tissues. Eastern-European Journal of Enterprise Technologies. 2015, 3(5), pp. 24-28.

9. Sydorets, V., Lebedev, A., Dubko, A. Mathematical modeling of the current density distribution in a high-frequency electrosurgery. Proceedings – 2015 16th International Conference on Computational Problems of Electrical Engineering, CPEE , 2015, pp. 215-217.

10. Dubko, A., Sydorets, V., Bondarenko, O. Simulation of the Temperature Distribution with High-Frequency Electrosurgical Heating. 38th International Conference on Electronics and Nanotechnology (ELNANO – 2018), Kyiv, Ukraine. 2018, p. 394-397.

11. Zoya Popovic, Branko D. Popovic. Introductory Engineering Electromagnetics. Prentice Hall, 1999, 548 p.

12. Vazina, A.A., Lanina, G. S. Marinsky et al. Influence of high-frequency electrosurgical welding on the functional stability of the structure of biological tissues. Welding of soft living tissues. Current state and development prospects: materials of the Sixth International Seminar: edited by O. N. Ivanova. Kyiv: E.O. Paton Electric Welding Institute, 2011. p. 53.

13. MSC Sinda 2017 User’s Guide: ID DOC11364. MSC Software Corporation. 2017, 451 p.

14. Vitaliy B., Maksymenko V., Danilova A., Shlykov V. The Discrete Model for the System of the Myocardium and Coronary Vessels. KPI Science News.2017, No 1, pp. 54-60.

Received 05.04.2021