The instrument has a handle (4) arranged at a proximal side, and a shaft (2) rotatably arranged at the handle. A tool (6) is arranged at a distal end of the shaft. An actuating element (14) is arranged at the handle and is movable in two switching positions. The actuating element is movably coupled with the shaft and the tool, respectively in the two switching positions. The actuating element is rotatable around a rotation axis for transmission of movement on the shaft and the tool. The actuating element comprises two coupling parts, and a tool is arranged at a pipe.
