INTRAUTERINE APPLICATION OF 18-METHYL-15β,16β-METHYLENE-19-NOR-20-SPIROX-4-EN-3-ONE SYSTEMS, INTRAUTERINE SYSTEMS CONTAINING 18-METHYL-15SS,16SS-METHYLENE-19-NOR-20-SPIROX-4-EN-3-ONE, AS WELL AS THE USE THEREOF IN CONTRACEPTION AND GYNAECOLOGICAL THERAPY

摘要

The present invention describes the intrauterine application of 18-methyl-15β,16β-methylene-19-nor-20-spirox-4-en-3-one of the general formula (1) in contraception and gynaecological therapy, as well as an intrauterine system containing compounds of formula (1).