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A breathing circuit for use in dental anaesthesia and with demand flow apparatus. It consists of a nosepiece fitted with an expiratory valve, and also a mouthpiece to which the supply of gas is disrupted if it hangs down. It has a special connector to link the mouthpiece, the two tubes to the nosepiece, and the inlet.
Content and Design Copyright 2000 Dr. Malcolm C Brown. See Title Page for more details