| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and a system for controlling RF output which compare and analyze a phase difference between an RF voltage and a current together with a temperature, a voltage and the current, quantitatively calculate a change in an impedance of biological cells, and control RF output based on the change in the impedance in performing cauterization. <P>SOLUTION: The method for controlling RF output in accordance with a change in an impedance of biological cells comprises the first step of detecting a phase value of the voltage and the current applied to an electrode and obtaining a difference between the phases, the second step of obtaining a change in the impedance such as a resistance component and a capacitive reactance component (XC) of the biological cell in performing cauterization, and the step of connecting an inductive reactance component (XL) to an RF output terminal so as to cancel (XC=XL) the capacitive reactance component (XC) and enabling the output impedance to have a resistance component. <P>COPYRIGHT: (C)2011,JPO&INPIT |
