Drug delivery device, especially for the delivery of progestins and estrogens

摘要

A delivery device for the controlled release of a therapeutically active agent over a prolonged period of time comprising a core comprising the therapeutically active agent, and a membrane encasing said core wherein said membrane is made of a siloxane-based elastomer comprising 3,3,3-trifluoropropyl groups attached to the silicium atoms of the siloxane units.