Patent ID: 8292883
Filing Date: 2012-10-23
Classification: A61B

Abstract:
1. An electrosurgical apparatus comprising: a high frequency power generation section which generates high frequency power to be applied to a living tissue; a voltage detection section which detects a voltage of the high frequency power; a current detection section which detects a current of the high frequency power; an impedance computation section which computes the impedance between holding members for grasping the living tissue, on the basis of the voltage and the current; a detection section which detects that a value of the impedance computed by the impedance computation section exceeds a predetermined threshold value; a waveform generation circuit which generates a timing signal according to a first frequency of the high frequency power to be generated from the high frequency power generation section or a timing signal according to a second frequency higher than the first frequency and outputs the generating timing signal; and a control section which performs control for switching the timing signal to be outputted from the waveform generation circuit from the timing signal according to the first frequency to the timing signal according to the second frequency based on a result obtained by the detection section.