Device for pulmonary drug delivery
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Abstract
A method of assessing the effectiveness of pulmonary drug delivery, including the steps of: a) providing a drug into an air flow past a sensor including a radiation source and a radiation detector; b) detecting, at the radiation detector, incident radiation over a period of time as a measurement profile; c) quantifying at least one characteristic of the shape of a measurement profile; and d) producing an indication of the effectiveness of pulmonary drug delivery based upon the at least one quantified characteristic.
20 Citations
73 Claims
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1-54. -54. (canceled)
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55. A method of assessing the effectiveness of pulmonary drug delivery, comprising the steps of:
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a) providing a drug into an air flow past a sensor comprising a radiation source and a radiation detector;
b) detecting, at the radiation detector, incident radiation over a period of time as a measurement profile;
c) quantifying at least one characteristic of the shape of a measurement profile; and
d) producing an indication of the effectiveness of pulmonary drug delivery based upon the at least one quantified characteristic. - View Dependent Claims (56, 57, 58, 59, 60, 61)
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62. A measurement device for assessing the effectiveness of pulmonary drug delivery, comprising:
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a conduit through which air carrying a cloud of drug particles can flow during drug delivery;
a radiation source for providing radiation into the conduit;
a radiation detector for detecting radiation from the conduit over a period of time as a measurement profile; and
a processor operable to quantify one or more characteristics of the shape of a measurement profile and to produce an indication of the effectiveness of pulmonary drug delivery based upon the quantified characteristic(s). - View Dependent Claims (63, 64, 65, 66, 67, 68, 69)
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70. A method of assessing the effectiveness of pulmonary drug delivery, comprising the steps of:
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recording, during a drug delivery, the output of a first radiation detector against time as a first measurement profile;
recording, during the same drug delivery, the output of a second radiation detector against time as a second measurement profile; and
processing the first and second measurement profiles to produce an indication of the effectiveness of pulmonary drug delivery.
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71. A measurement device for assessing the effectiveness of pulmonary drug delivery, comprising:
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a conduit through which air carrying a cloud of drug particles can flow during drug delivery;
a radiation source for providing radiation into the conduit;
a first radiation detector for detecting radiation from the conduit over a period of time as a first measurement profile;
a second radiation detector for detecting radiation from the conduit over the period of time as a second measurement profile; and
a processor operable to produce an indication of the effectiveness of pulmonary drug delivery based upon the first and second measurement profiles.
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72. A drug delivery device for providing a drug dose to a user in a plurality of separate drug deliveries, comprising:
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a drug metering means for releasing a controlled amount of drug for each drug delivery;
a conduit through which air carrying a cloud of drug particles can flow;
a radiation source for providing radiation into the conduit;
a first radiation detector for detecting radiation from the conduit during a on-going drug delivery as a first measurement profile; and
control means operable to control the drug metering means, for a subsequent drug delivery, in dependence upon at least the first measurement profile. - View Dependent Claims (73)
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Specification