| abstract |
A pulmonary delivery apparatus (10) comprising: a first vaporiser (32) adapted to vaporise a quantity of a first liquid, and being characterised by: a second vaporiser (34) adapted to vaporise a quantity of a second liquid, the second liquid being a different liquid to the first liquid; and an outlet (30) via which, in use, a user can inhale a mixture of the first and second vapours. The or each vaporiser can each comprise a heater (35, 37) adapted to evaporate a quantity of the respective liquids, or an atomiser. The mixture can vary in infinitesimal increments from 100% of the first liquid and 0% of the second liquid to 0% of the first liquid and 100% of the second liquid. More than two vaporisers may be provided. The invention suitably provides for controlled and/or accurately dosed delivery of one or both of the liquids using a controller (28). |