Intrauterine application of 18-methyl-15ss,16ss-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-15ß,16ß-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).