Surgical operation system

An endoscopic operation system comprising:

• an endoscope used to observe an intracorporeal region;
• a signal processor for processing an image signal, which is produced by an imaging device incorporated in the endoscope, to produce a video signal;
• an endoscopic image display device for displaying an endoscopic image, which is picked up by the imaging device, according to the video signal;
• a plurality of operating handpeices for generating treatment energies;
• a driving signal generator for generating a driving signal which causes any operating handpiece out of the plurality of operating handpieces to generate treatment energy;
• an output switching unit, connected between the driving signal generator and the plurality of operating handpieces, for switching the routes of an output line over which the driving signal is transmitted;
• hand-held members included in the plurality of operating handpieces and held for treatment;
• hold detecting devices, included in the hand-held members, the hold detecting devices each producing a predetermined hold detection signal when detecting that the hand-held member is held;
• an output switching control unit for receiving the hold detection signal, and controlling the output switching unit so that the output destinations of the driving signal will be switched to select an operating handpiece from which the hold detection signal is transmitted;
• and
• a superimposition unit for superimposing information of a handpiece, from which the hold detection signal is transmitted, on an image displayed on the endoscopic image display device.