A male luer connector device that attaches to any standard female luer valve to open a flow channel between the two luers. The support frame includes a sill and a setting chair that are arranged to support the base portions of the glass pieces. The tool furthermore comprises a sliding part that is positioned such that it is connected form-locking to the rotating part in rotating direction and axially movable in axial direction and has a flat sensing element on the cylinder-side end that can be inserted into the keyway. In response to receiving the information, the application server is adapted to select survey content related to the specified survey subject area and to communicate this selected subject-specific survey content to the user.