초록

An arrangement for delivering a drug aerosol comprises a sensor (3) which detects turbulent air flow during inhalation and causes the nebulizer (8,9,10,11,12,13) to generate the aerosol only during the inhalation phase of the breathing cycle. Airflow is diverted from the sensor during exhalation.

대표청구항 ▼

[ What is claimed is:] [1.] A drug delivery arrangement for delivering a drug aerosol to the respiratory system of a patient, comprising:a) duct means having a first inlet, the first inlet being open to the atmosphere, the duct means being arranged to convey from said first inlet an airstream inhale

[ What is claimed is:] [1.] A drug delivery arrangement for delivering a drug aerosol to the respiratory system of a patient, comprising:a) duct means having a first inlet, the first inlet being open to the atmosphere, the duct means being arranged to convey from said first inlet an airstream inhaled by the patient;b) nebulizer means communicating with said duct means and arranged to generate a drug aerosol in said airstream, said nebulizer means having a second external inlet for connection to a compressed air supply;c) means for generating turbulence in said airstream due to inhalation by the patient;d) a microphone selectively responsive to said turbulence due to inhalation to generate a control signal; ande) control means coupled to said nebulizer means and responsive to said control signal to cause said nebulizer means to generate said aerosol selectively during said inhalation phase of the breathing cycle.