Layout optimization of electrodes for radiofrequency ablation instrument

Grepl, Jan; Penhaker, Marek; Hlavackova, Milada; Vávra, P; Prokop, Lukáš; Sikora, Tadeusz; Horyl, Petr

doi:10.1109/sami.2013.6480968

Cited by 2 publications

(1 citation statement)

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“…Ion is fast vibrating back and forth between the two electrodes under the high frequency oscillation. Due to the size of the various ions, mass, charge and different moving rates, ions friction with each other and produce biological heat, leading to local fever [1]. Due to tumor poor heat dissipation, the tumor tissue temperature is higher than the adjacent normal tissue, and the cancer is sensitive to heat, high heat killing cells or producing coagulation zone, and relative keeping normal tissue well.…”

Section: Radiofrequency Ablation (Rfa)mentioning

confidence: 99%

Radiofrequency Signal in the Radiofrequency Ablation System

Wang¹,

Nan²,

Tian³

et al. 2016

Proceedings of the 2016 International Conference on Biomedical and Biological Engineering

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Radiofrequency ablation technique is one of the tumor hyperthermia methods and has been widely used in clinical treatment because of its small traumatic, better curative effect and others advantages. Recently, the common automatic control of radiofrequency ablation system is temperature control model that only used to control electrode tip temperature by controlling center of the output power to prevent cooking, rather than monitoring temperature of tumor edge, leading to the result is not accurate. So for the purpose of being ablated completely without damaging the normal tissue, this paper puts forward with double temperature controlling system to monitor the electrode tip and the tumor edge temperature at the same time, and control the output power according to the change of the temperature, in order to achieve the purpose of accurate ablation. Now The design of radiofrequency ablation signal have been finished, including the final output signal peak-to-peak voltage of 140V, current 0.3A, total power adjusted in 2W to 18W.

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Section: Radiofrequency Ablation (Rfa)mentioning

confidence: 99%