Zoo-technical drug delivery device

摘要

The present invention relates to a veterinary zoo-technical drug delivery system (device) for the simultaneous release of two or more active substances, which system releases the active substances in a substantially constant ratio over a prolonged period of time. The drug delivery system can be in different forms, such as e.g. an implant, or a intravaginal device such as a helical coil, a spring or a ring.