The present invention concerns an intrauterine device (100), IUD, comprising a stem element (30), a cross-member (70), and a withdrawal string (90), wherein the stem element (30) comprises a hollow (34) elongated body (32)； the cross-member (70) comprises a coupling element (74) configured for dismountable attachment to the stem element (30), and one or more arms (76) attached to the coupling element (74)； and the withdrawal string (90) is anchored to the cross-member (70) and is threaded through the hollow (34) of the stem element (30).
