Endoscope with rotary drum and operating method

An endoscope with a rotating drum or a rotation module, in particular for use as a sterile disposable instrument, having an elongate rigid and/or flexible shaft tube which at a distal end mounts the rotating drum, preferably by means of a bearing fork, so as to be rotatable about at least one first axis of rotation, an optical imaging system being arranged in said rotating drum, the optical imaging system preferably comprising an electronic image recorder and/or an imaging optical unit and/or an illumination device, with the at least one first axis of rotation running approximately transversely to a longitudinal axis of the shaft tube and with the endo scope having at least one control line for rotating the rotating drum preferably by way of a linear movement,

• wherein the at least one control line of the rotating drum runs on an outer side/outer face of the shaft tube, preferably so as not to restrict a work channel in the interior of the shaft tube and the internal diameter of the shaft tube, and is fastened to the rotating drum at at least one lever distance (a) from the at least one first axis of rotation.