The present invention relates to an apparatus for facilitating delivery of a fluid, such as an anaesthetic fluid, to the respiratory tract of a subject. It comprises a fluid line substrate, in the form of a block having conduits form therein for delivery and removal of an anaesthetic. A subject port is formed to receive the anatomy of the patient. A mask apparatus is arranged for mating with the subject port, and having an opening to receive the nose and mouth of the subject.
