Use of 18 Methyl 14B, 16B - methylene - 19 nor espirox 20 - - 4 - - 3 - onas in the treatment of menorrhagia and intrauterine Systems include 18 Methyl 14B, 16B - methylene - 19 nor espirox 20 - - 4 - - 3 - onas to the treatment of uterine Bleeding Disorders
18-methyl-15,16-methyl-19-nor-20-helix-4-en-3-onas general formula (1), wherein R6 and R7 are hydrogen or a methyl group for the treatment of intrauterine bleeding and the use of IUDs, including a compound of Formula 1.Uso intrauterino de 18-metil-15ß,16ß-metilen-19-nor-20-espirox-4-en-3-onas de fórmula general (1) fórmula (1) en donde R6 y R7 son hidrógeno o un grupo metileno, para el tratamiento de la menorragia, de hemorragias intrauterinas en general, y un sistema intrauterino para dicho uso, que comprende un compuesto de fórmula 1.