Dose Counter
First Claim
1. Dose counter device for an inhaler that registers when a dose is delivered, adapted to be mounted on the distal end of the inhaler, said inhaler comprises a canister comprised in an inhaler housing, wherein the distal end of the canister protrudes a distance from the distal end of the inhaler housings, and wherein the canister has a canister body and further in its proximal end has a dose chamber having a valve means and a transfer tube having a valve means, wherein the valve means are placed a predetermined distance from each other along the longitudinal axis of the canister when the inhaler is in a first non-activated state, and wherein the valves are adapted to communicate with each other when the distal end of the canister in a second activated state is applied with a force that urges the canister chamber over the transfer tube towards the proximal end of the canister a distance that is equal to said predetermined distance, which will expel medicament from the canister characterised in that the dose counter device comprises device trigger means provided in an electronic circuit on the distal end of the canister, that the electronic circuit further comprises an acoustic sensing means also provided on the distal end of the canister, and in that the force sensing means is adapted to activate the acoustic sensing means when a force is applied to the distal end of the canister and in that the acoustic sensing means registers a dose delivery when it picks up a sound.
1 Assignment
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Accused Products
Abstract
A dose counter device for an inhaler registers when a dose is delivered. The dose counter is adapted to mount on the distal end of the inhaler. The inhaler includes a canister comprising an inhaler housing. The dose counter device comprises a device trigger provided in an electron circuit on the distal end of the canister. The electron circuit further comprises an acoustic sensor also provided on the distal end of the canister. A force sensor is adapted to activate the acoustic sensor when a force is applied to the distal end of the canister. The acoustic sensor registers dose delivery when it picks up a sound.
32 Citations
8 Claims
- 1. Dose counter device for an inhaler that registers when a dose is delivered, adapted to be mounted on the distal end of the inhaler, said inhaler comprises a canister comprised in an inhaler housing, wherein the distal end of the canister protrudes a distance from the distal end of the inhaler housings, and wherein the canister has a canister body and further in its proximal end has a dose chamber having a valve means and a transfer tube having a valve means, wherein the valve means are placed a predetermined distance from each other along the longitudinal axis of the canister when the inhaler is in a first non-activated state, and wherein the valves are adapted to communicate with each other when the distal end of the canister in a second activated state is applied with a force that urges the canister chamber over the transfer tube towards the proximal end of the canister a distance that is equal to said predetermined distance, which will expel medicament from the canister characterised in that the dose counter device comprises device trigger means provided in an electronic circuit on the distal end of the canister, that the electronic circuit further comprises an acoustic sensing means also provided on the distal end of the canister, and in that the force sensing means is adapted to activate the acoustic sensing means when a force is applied to the distal end of the canister and in that the acoustic sensing means registers a dose delivery when it picks up a sound.
Specification