1. Multi-row radiofrequency heating systems.
- Author
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Makarov, V. N. and Boos, N. A.
- Subjects
- *
HEATING , *RADIO frequency , *CATHETER ablation , *POTATOES , *CHEMICAL properties , *ELECTRODES - Abstract
The most significant difficulty with radiofrequency ablation (RFA) is insufficient heating. This problem led equipment developers to the idea of introducing cluster systems of three electrodes. Such systems have expanded the functionality of the method but still, have some limitations. To eliminate the disadvantages of the RFA method, electrode systems with an increased number of electrodes were used. The studies were carried out at the METATOM-3 radiofrequency complex. The number of electrodes was varied from 4 to 8, and the bipolar operating mode was used. The potato tuber was used as a biotissue simulator. The choice of potatoes as a simulator was associated with the peculiarities of its physical and chemical properties. Heating was carried out from the periphery of the putative tumor to the center. Various electrode systems have been developed with a number of electrodes ranging from 4 to 8. The proposed systems can be used for percutaneous, laparoscopic, or open access. The results of heating on a simulated human tissue are demonstrated. The maximum observed heating diameter was 4-5 cm, with a heating time of 10 minutes. As a result of the tests, it was found that with an increase in the number of electrodes and a transition to the bipolar mode, a significant increase in the volume of heating is possible, without increasing the procedure time, due to complete or partial refusal of switching. Heating from the periphery to the center under real conditions will reduce the risk of metastasis. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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