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US 2004/0069301 A1Published application
Dispenser for medicament
AssigneeClinical Designs Limited
InventorRaymond John Bacon
Life of this patent
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AssigneeClinical Designs Limited
InventorRaymond John Bacon
Estimating the term…
A dispenser 1 has a source of medicament 2 with a can 3 and a metered dose valve 4. The outlet stem 5 of the valve is fitted to a junction block 6 in a body 7 of the dispenser to which a breath actuated dose release mechanism 8 is connected for release of the medicament through a nozzle 9. The can has an acoustic transducer 11 attached to its side wall 12, in intimate acoustic contact. An electronic package 14, comprising a detection circuit and a driver for a LCD display 15 are also mounted on the can wall, the transducer being connected to the circuit. The detection circuit is arranged to decrement a count shown on the LCD by one for every detection of noise of dispensing/metering of a dose from the can. The detection circuit is programmed to compare the spectrum of the noise with a known dose-dispensing spectrum and to decrement the counter according to the comparison.
A dispenser for a medicament or the like to be inhaled as successive doses, the dispenser comprising:
A dispenser as claimed in any preceding claim, wherein the counter is associated with an indicator, preferably audio or visual, for indicating a period of time from dose release during which the user should continue to inhale or at least hold his breath for drawing the medicament into his lungs.
A dispenser as claimed in any preceding claim, wherein the counter is removably mounted on the dispenser, whereby it can be fitted to another dispenser after the can of a first dispenser has released its prescribed number of doses.
A dispenser as claimed in any preceding claim, wherein the counter is arranged to change the state of the counter from quiescent to active on detection of a first event and increment/decrement the counter on detection of a second event.
A counter and transducer for a dispenser as claimed in any preceding claim, the counter and transducer comprising:
Dependencies are inferred from the claim text.