An operational remote controller integrates a joystick for bending a bending portion of an inserted portion in an endoscope. A bending lever stands on the joystick. For every automatically returning of the bending lever to a neutral position, a CPU of the operational remote controller detects the neutral...http://www.google.com.au/patents/US6752758?utm_source=gb-gplus-sharePatent US6752758 - Endoscope apparatus
