The present invention relates to an inserter for an intrauterine system comprising a handle (3), and an insertion tube (6) having a first end and a second end, and being arranged in connection with the handle. The inserter is characterized in that the first end of the insertion tube (6) comprises at least one frame slot for receiving a frame of the intrauterine system. The invention also relates to a kit comprising an inserter according to the present invention and an intrauterine system, wherein the intrauterine system (1) comprises a therapeutic component (1b) and a continuous, closed frame (1a), the therapeutic component (1b) being connected to the frame (1a) at least one point, and therapeutic component (1b) of the intrauterine system (1) is at least mainly arranged inside the first end of the insertion tube (6) and the frame (1a) of the intrauterine system (1) is at least mainly arranged outside the first end of the insertion tube (6).