This invention relates to an electric surgical knife device.
A prior art electric surgical knife device supplies an incision current for incising body tissues, a coagulation current for coagulating the blood at the area of the incision and a blend current, i.e. blend of incision and coagulation currents, for both incising body tissues and coagulating the blood at the area of the incision. The incision current, the coagulation current and the blend current are supplied independently of one another by actuating respectively provided switches. An operating physician may mistakenly actuate two of these switches or all these switches at the same time. If this happens, the device may fail to supply the desired current. For example, when the physician mistakenly actuates the incision current supply switch and the coagulation current supply switch at the same time though he intends to coagulate the blood, the incision current may be supplied. In this case, the body tissue is cut without a blood coagulation procedure which will result in an enormous bleeding.
It is an object of this invention to provide an electric surgical knife device which helps carry out electric surgery in a safe and sound manner, if erroneously operated.