A medical instrument includes a hollow shank and an instrument section arranged pivotable to the hollow shank proximate the distal end of this hollow shank. An instrument part is mounted in an axially movable manner in the pivotable instrument section. This instrument part, which may be a part acting in a direct manner on organs, tissue or the like, or preferably serves for movement coupling to such a part in the pivotable instrument section, is coupled in movement via a forcibly guided multi joint arm to an actuator, which is axially movably guided in the hollow shank