Patent ID: 8556800

Claim:
A lubricant supplying device of an endoscope everting tube drive comprising: a drive tube which is everted at least once so as to form an outer and an inner tube portion and having an endoscope shaft mounted therein in an axially displaceable manner, a drive device which encompasses at least a portion of the drive tube, the drive device configured to exert a driving force onto the inner tube portion, thereby displacing the endoscope shaft along a longitudinal axis of the endoscope shaft, the drive device further being in fluid connection with a lubricant supply line and a lubricant discharge line, the lubricant supply line being connected to the drive device at a filling port, and the lubricant discharge line being connected to the drive device at an evacuation port, the filling port and the evacuation port being arranged in an approximately diametrically opposite relationship with each other about the longitudinal axis of the endoscope shaft, and wherein the drive device has a position sensor located so as to detect a position of each of the filling port and the evacuation port relative to the longitudinal axis of the endoscope shaft and with regard to gravity, the position sensor emitting signals relating to the positions of the filling port and the evacuation port.