| 摘要 |
PURPOSE:To protect the medical electrical electronic apparatus for inputting a living body signal of a living body to which a surgery is performed by using the electric surgery appliance, from an electromagnetic wave fault. CONSTITUTION:At the time of using an electric surgery appliance 1, a signal (c) for showing a fact that it is being used form a first output port 17 to a first input port 29 provided in an electronic apparatus 2, and by a first control circuit 27 for receiving a signal from the port, a high frequency choke coil 20 and a first low-pass filter 231 whose cut-off frequency is low are allowed to intervene in a signal line of a living body signal, and a high frequency noise contained in the living body signal is eliminated. When the electric surgery appliance is used in an operation mode in which a high frequency electric power is outputted intermittently to the surgical knife tip 3, a signal (d) synchronized with a domant period in which the output of high frequency electric power is stopped, from a second output 18 provided in the surgery appliance to a second input port 30 provided in the electronic apparatus, a sampling pulse is outputted from a second control circuit 28, and the living body signal is sampled in the dormant period by a sampling circuit 22. |
