The invention refers to a secondary endoscope mountable onto a mother endoscope. The secondary endoscope comprises a grip body (4 400) having an outer body including an inner channel and an inner body (3 300) arranged in the inner channel of the outer body, said inner body (3 300) being movable relatively to the outer body a catheter (5 500) mounted on the grip body (4 400) a control element (1 100) at the proximal side of the grip body (4 400) for controlling a bending portion (6 600) arranged on the distal end of the catheter (5 500), said control element (1 100) being arranged on the proximal side of the inner body (3 300) and a mounting connection on the distal end of the grip body (4 400) for fixing the secondary endoscope to a mother endoscope (200), said mounting connection being attached to the outer body of the grip body (4 400).
