Abstract: The apparatus according to the invention for controlling a probe which has a sheathing of an endoscopy device, serves for eliminating difficulties in regard to co-ordination between the doctor operating the endoscopy device and the assistant who is operating the probe. At its one end, the probe has a movable medical instrument (10) while at its other end it has an operating member (8). For the purposes of controlling the probe, the apparatus is provided with a receiving means (5) for the probe sheathing (6), an actuating element (9), a drive unit for controlling the probe function and foot switches (23a, 23b) for controlling the control function. For the specific situation of an injection probe the apparatus has a further functional unit with suitable drive and fixing means (34, 35 and 12 respectively) for pressing out a medical hypodermic syringe (11,12) which is connected to the injection probe.