Use of 18 Methyl 15beta, 16beta - methylene - 19 nor espirox 20 - - 4 - - 3 - onas of formula (1) in the treatment of disorders with uterine bleeding and bleeding; intrauterine system comprises 18 Methyl 15beta, 16beta - methylene - nor - 19 20 - espirox - 4 - 3 - onas of formula (1).
The present invention describes intrauterine use of 18-methyl-15&bgr;,16&bgr;-methylene-19-nor-20-spirox-4-en-3-ones of the general formula (1) wherein R6 and R7 are hydrogen or a methylene group, in the treatment of menorrhagia, of uterine haemorrhages in general, and an intrauterine system for said use, comprising a compound of formula 1.USO DE COMPUESTOS DERIVADOS DE 18-METIL-15ß, 16ß-METILEN-19-NOR-20-ESPIROX-4-EN-3-ONAS PARA EL TRATAMIENTO DE TRASTORNOS CON SANGRADO UTERINO Y HEMORRAGIAS; Y SISTEMA INTRAUTERINO QUE COMPRENDE A DICHOS COMPUESTOS.