Transdermale therapeutische Systeme

摘要

Transdermal therapeutic systems are disclosed for the controlled administration of second and third generation gestagenes, and possibly of oestrogens, at least partially dissolved in a matrix. The disclosed systems are characterised in that their matrix contains a copolymer of one or several esters or amides which contain vinyl groups and have the general formula (I), as well as an N-vinyl lactam of general formula (II). In the general formula (I), X symbolises a -COO- group, a -CONH- group or an -OCO- group; R1 stands for a hydrogen atom or an alkyl group with maximum 4 carbon atoms; and R2 stands for a hydrogen atom or an alkyl group with maximum 12 carbon atoms. In the general formula (II), n is a digit from 3 to 5.