Transdermal therapeutic system comprising a reservoir type pressure sensitive adhesive layer and a back layer with uni-directional resilience

摘要

A transdermal therapeutic system (TTS), in particular a patch, is described, comprising: a detachable protective layer; a pressure-sensitive adhesive reservoir layer; and a backing layer with or without a coating of pressure-sensitive adhesive and featuring a unidirectionally, preferably longitudinally, elastic material having an elasticity of at least 20%. The TTS is particularly suitable for use as a multi-day plaster for the treatment of, for instance, pain or drug dependency.