IMPROVEMENT TO INTRAUTERINE COPPER CONTRACEPTIVE DEVICES

摘要

The invention relates to an intrauterine contraceptive device (IUD) comprising a plurality of hollow, metabolically active element (2), open at both ends and arranged longitudinally onto a thread (3) to form a non-rigid structure of limited dimensions. The structure has a total surface area not exceeding 275 mm2. The length of the structure is less than 2.6 cm when the copper elements are closely approximated and not more than 3.0 cm when separated and its diameter is not more than 3.30 mm, preferably not more than 3.00 mm. The hollow elements have an inner diameter of at least 1.6 mm with a length equal or less than 8 mm. Optionally, the hollow elements are partially cut out or/and perforated.