A medicated inhalant dispenser has a plastics material body having a mouthpiece. A pressurized, inhalant source has a canister and a sprout which his moved towards the canister for release of a dose from the canister. The sprout is accommodated in a junction member, which is movable by a cam connect
A medicated inhalant dispenser has a plastics material body having a mouthpiece. A pressurized, inhalant source has a canister and a sprout which his moved towards the canister for release of a dose from the canister. The sprout is accommodated in a junction member, which is movable by a cam connected to a pivotal cover for the mouthpiece. Opening of the cover sets a breath actuable kink valve, having a nozzle through which the inhalant is released and a breath flap actuation. Opening also causes the junction member to be lifted for dose dispensing into the kink valve. Breathing in releases the dose for inhalation. A closed sleeve is provided for abutment of the end of the canister as the junction member is moved towards the canister. Between the canister end and an end of the closed sleeve, an adjustable abutment is provided.
대표청구항▼
1. An enclosed aerosol source combination comprising an assembled combination of the aerosol source as such, a body and an enclosure: the aerosol source having:a canister,a spout at one end of the canister, the spout being movable inwards of the canister for substance release,a spring urging the spo
1. An enclosed aerosol source combination comprising an assembled combination of the aerosol source as such, a body and an enclosure: the aerosol source having:a canister,a spout at one end of the canister, the spout being movable inwards of the canister for substance release,a spring urging the spout outwards of the canister with a force required to be overcome for release movement inwards, anda valve for releasing a substance from the canister on longitudinal movement of the spout against the spring; the body having:a mouthpiece for inhalation/insufflation of the substance;a moveable junction member for receiving the spout; anda dispense-mechanism able to be cocked to move the junction member and receive a substance dose and to be triggered by inhalation releasing a substance dose;the enclosure having:at least one dispense-mechanism positioning feature at a determined position; anda location member for the canister, that is configured to be adjusted in situ in the enclosure and prior to assembly of the enclosure into the assembled combination with the body and the aerosol source, to take account of variations in an overall length of the source, wherein said overall length of the source is the length from a distal end of the source's spout to the source's other end, and wherein adjustment of the location member involves plastic and permanent compression of the location member to a required length so as to provide a determined position of the spout with respect to the at least one dispense-mechanism positioning feature such that the source is supported with negligible end float, when the aerosol canister has been assembled into the enclosure, such that on movement of the spout through a determined stroke with respect to the at least one dispense-mechanism positioning feature and against the spring substance release is predictable. 2. The enclosed aerosol source combination as claimed in claim 1, wherein the at least one dispense-mechanism positioning feature is an enclosure abutment feature for the body included in the combination, the body having: a second abutment feature for abutment of the enclosure abutment feature; the two abutment features being connected together by a connection means. 3. The enclosed aerosol source combination of claim 2, wherein the connection means of the two abutment features are selected from the group consisting of interengagement of complementary features, a welded joint and an adhesive joint. 4. The enclosed aerosol source combination as claimed in claim 1, wherein the location member is a part added to the enclosure. 5. The enclosed aerosol source combination as claimed in claim 4, wherein the location member is a washer of aluminium honeycomb material. 6. The enclosed aerosol source combination as claimed in claim 1, wherein the location member is a deformable part of the enclosure. 7. The enclosed aerosol source combination as claimed in claim 6, wherein the location member is an integrally moulded honey comb or set of radial ribs. 8. The enclosed aerosol source combination as claimed in claim 6, wherein the location member includes a rigid disc or washer pressed into the deformable part of the enclosure. 9. The enclosed aerosol source combination as claimed in claim 1, wherein the enclosure is imperforate at an end of the canister opposite from the spout and along a side thereof. 10. The enclosed aerosol source combination as claimed in claim 1, wherein the enclosure is skeletal. 11. An adjustment method of the enclosed aerosol source as claimed in claim 1, the method consisting in the steps of: measuring the overall length of the source from the distal end of the source's spout to the source's other end;adjusting the location member in situ in the enclosure and prior to assembly of the enclosure into the assembled combination with the aerosol source and the body by compressing the location member to a standard dimension less the overall length of the source, the standard dimension being the distance from a support for the location member and the at least one dispense-mechanism positioning feature and a fixed use dimension from the at least one dispense-mechanism positioning feature to the distal end of the spout, to provide the determined position of the spout with respect to the at least one dispense-mechanism positioning feature; andassembling the aerosol source, the body, and the enclosure to form the enclosed aerosol source. 12. The adjustment method of claim 11, wherein the location member is adjusted by machining. 13. The adjustment method of claim 11, wherein the location member is adjusted by crushing with a force controlled to be a determined amount higher than the dose release force of the source. 14. The adjustment method of claim 13, wherein the crush force is substantially double the release force. 15. The adjustment method of claim 11, wherein the location member is adjusted by plastic deformation of the location member. 16. An adjustment method utilizing the enclosed aerosol source combination as claimed in claim 1, comprising the steps of: measuring the overall length of the source from the distal end of the source's spout to the source's other end, wherein the measuring consists of indirectly measuring the overall length of the source bymeasuring a position of an end of the source with respect to a datum in the body, with the source and the spout held towards the junction member with no end float, and adjusting the location member in situ in the enclosure by compressing the location member to a required length so as to provide a determined position of the spout with respect to the at least one dispense-mechanism positioning feature. 17. The adjustment method of claim 16, wherein the measuring is carried out with the dispense mechanism in a state for moving the spout for release of a dose from the source and the source urged towards the junction member for such release and the adjustment being compensated for stroke of the junction member and the spout. 18. The adjustment method of claim 16, wherein the measurement step is made with the spout in a quiescent position with respect to the source and with the junction member and the dispense mechanism being in their normal rest position state from which they are moved for dose release. 19. The adjustment method of claim 16, wherein the adjustment of the location member is such that the canister is supported with negligible end float.
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