Influence of temperature-dependent tissue parameters on monopolar coagulation model

Abstract The use of high-frequency (HF) generators for HF surgical treatment biological tissue has become an indispensable part today's applications all kinds. Generally, alternating electric currents between 300 kHz and 1 MHz are used to induce hemostasis by heating at the cellular level. This effect can be attributed Joule heating, in which a current dissipated conductor converts electrical energy into thermal energy. However, sound evidence on reliability effectiveness application-specific generator modes is not sufficiently available. Usually, takes place empirically means preclinical or clinical studies. Nevertheless, corresponding empirical data collection time- cost-intensive. Therefore, physiological statistical modeling provides opportunity relate response applied obtain prediction reaction. In this contribution, we establish monopolar coagulation model already well-known approach based Pennes bioheat equation. Additionally, vaporization water boiling point considered. Furthermore, variation temperature-dependent parameters was performed analyze their impact output. simulation results demonstrate that initial conductivity greatest influence temperature distribution as well time until reached water. contrast, content least Depending desired effect, power control function its reciprocal, resistance, must added next improved model.