An experimental study about improvement of operation and safety of the microwave coagulator

Abstract

The level of reflected wave that is appeared when microwave was output is different by the condition of junction which is connected the output cable or electrode. We devised the equipment to prevent miss-operation by using this characteristic. As a result, we made it possible to give warning for miss-operation by using the wave which is subtracted reflected wave from forward wave. And we tried to find the timing that coagulation finishes, using the characteristic that level of reflected wave changes with spread the coagulated layer.