Patent ID: 8915939

Claim:
A tubular medical instrument having a hollow shaft, a handle positioned on the proximal end of the shaft, and at least one tool actuation element that is positioned in the hollow shaft and has on its distal end a tool consisting of two jaw members, and wherein the tool actuation element is coupleable with at least one actuation mechanism of the handle to actuate the tool between a closed working position and an open working position and wherein the tool actuation element and the hollow shaft are detachably connectable to one another by a coupling mechanism characterized in that a stopping of the coupling mechanism between the tool actuation element and the hollow shaft is dependent on the mutual opening position of the jaw members of the tool relative to each other in such a way that the tool actuation element can only be connected by the coupling mechanism with the hollow shaft exclusively in a wide-opened installation position of the jaw members of the tool that differs from the working positions of the jaw members of the tool and wherein the coupling mechanism prevents the tool from transitioning between the working positions and the installation position while the tool actuation element is coupled to the handle.