A device for a rectoscope including a main pipe which is provided, at a first end portion, with a connection sub arranged to receive an optics head, and an elongated insertion portion, a second end portion being provided with a rectoscope mouth, and the center bore of the main pipe being arranged to receive an insertion cone, at least one fluid line being arranged in the main pipe, the fluid line extending from the first end portion to a second end portion of the main pipe.
