Transdermales therapeutisches System mit einer selbstklebenden Matrix, enthaltend organische Säure-Additionssalze von Alkaloiden des Morphin- bzw. Morphinantyps

摘要

The invention relates to a transdermal therapeutic system (TTS) comprising a support layer which is impermeable to the active ingredient, a self-adhesive matrix consisting of a cationic base polymer and a detachable protective film on the side facing the skin. As active ingredient the matrix contains organic acid addition salts of morphine alkaloids on the basis of a water-soluble polyaminomethacrylate salt containing fatty acids. The invention is characterized in that a sparingly water-soluble copolymer of acrylic and methacrylic acid esters with a comparatively low quaternary content of ammonium groups which form a salt with inorganic acids is admixed to the cationic base polymer.