Drug delivery method and inhalation device therefor

Details Drug delivery method and inhalation device therefor Drug delivery method and inhalation device therefor

A - Human Necessities

61

M

128/64

A61M 15/00 (2006.01)

Patent

CA 1229019

- 1 - Abstract: A method and an apparatus for administering a drug through oronasal passage for absorption on the mucous tissue of a patient includes introducing an aerosol of the drug into an expanded bag and means for communicating the drug with the oronasal passage of the patient and otherwise is substantially impervious to the passage of air, collapsing the expanded bag while the means for communicating with the oronasal passageway is in position to deliver the drug into the oronasal passage of the patient. Signal means in a bidirectional channel indicate when the rate of passage of the drug exceeds a desirable limit, whereby the patient taking the drug is reminded to decrease the rate of collapse of the airbag, thereby maximizing drug utilization. The drug delivery device admits a drug-containing aerosol through a drug introduction opening while the collapsible airbag is at least partially expanded, the drug being introduced into the oronasal passage with the contraction of the collapsible airbag.

442562

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