| 摘要 |
PURPOSE:To decrease influence caused by noise current brought about by use of electric knife on electrocadiogram signal and the like. CONSTITUTION:The monitor is equipped with an operating part 4 which has an incision place designating key for designating the place to be incised by electric knives and a counter electrode plate designating key for designating counter electrode plate positions, a ROM 7 which holes a reference table which shows the guidance axis of the six basic axisis method and a predetermined angle and memories of controlling programs for extraction of the guidance axisis, and also with a change-over switch which inputs the electrocardiogram signal of the extracted guidance axis. In addition to them, the monitor is also equipped with a controlling part 9 which calculates the first angle of the noise current vectors of the electric knife which are determined by the incision places and counter electrodes and then reads out the corresponding guidance axis from the reference table by calculating the second angle which crosses orthogonally this first angle, and simultaneously inputs the controlling signal in the switch 2, calculates heart rates from the guidance axis read out, and with the displaying apparatus 8 which displays the cursor corresponding to the model of a living body, the place for incision and the counter electrode and at the same time, displays all of them on a screen. |
