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Inhaler

A technology of inhalers and inlet holes, applied in the direction of inhalers, medical devices, other medical devices, etc.

Inactive Publication Date: 2013-05-22
ASTRAZENECA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a need to avoid so-called leak flows, which occur via eg improperly matched components, holes formed as part of the molding process, windows in the inhaler used to display the dose count, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0078] Referring to the drawings, the inhaler 2 comprises a dose dispensing assembly 4 having a generally disc configuration, an upper housing part 6 and a lower housing part 8, both of which are made of 30% glass fiber reinforced plastic (e.g. polybutylene paraphenylene). dicarboxylate, PBT). The inhaler also includes a mouthpiece assembly comprising a mouthpiece element 10 made of polypropylene (for example Purell HM671T) and a thermoplastic vulcanized elastomeric mouthpiece sealing element 9, the mouthpiece The sealing element 9 seals the interface between the mouthpiece assembly and the housing. Alternatively, the sealing element 9 may for example comprise a resilient element such as Santoprene 8281-45MED. The housing is pivotally secured in a housing comprising upper and lower housing components 11, 12 made of polycarbonate (e.g. Makrolon 2458); Move between configurations. In the open configuration, the mouthpiece port is exposed and the external air inlet 71 is open ...

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PUM

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Abstract

A dry powder inhaler (2) comprises a housing (6, 8) including a mouthpiece (10) and a cover (11, 12) movably mounted to the housing (6, 8). The cover (11, 12) is movable between an open configuration of the inhaler (2) in which the mouthpiece (10) is exposed for use and a closed configuration of the inhaler (2) in which the mouthpiece (10) is enclosed. In the open position, the cover (11, 12) at least partly defines an inlet aperture (71) to an inhalation air flow path leading through the inhaler (2) and communicating with the mouthpiece (10). The inlet aperture (71) is positioned in such a way that makes it difficult for a user to obstruct it when using the inhaler (2). Preferably, in the closed position, the mouthpiece (10) is received into the inlet aperture (71) to protect the mouthpiece (10) when the inhaler (2) is stored.

Description

technical field [0001] The present invention relates to an inhaler having a mouthpiece (or nosepiece) and a cover which is removable so as to enclose the mouthpiece when the inhaler is stored To protect the mouthpiece or expose the mouthpiece for use. Background technique [0002] There are different types of inhalers on the market. A pressurized metered dose inhaler (pMDI) delivers a fixed dose of a substance in aerosol form. Powder inhalers typically release a dose of a powdered substance, which is entrained in an air stream. In powder inhalers, the powder may be provided in a bulk container of the inhaler through which a dose of powder is metered for dispensing. As an alternative to bulky containers, powder inhalers may comprise a compartment or compartments to contain one or more discrete doses of powdered substance. The compartments described above may be in the form of sealed blisters in a blister pack, flexible strips containing sealed chambers, or other suitable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M15/00
CPCA61M2015/0043A61M2015/0048A61M15/0045A61M2015/0075A61M2015/0021A61M2202/064A61M15/0021A61M15/0043A61M15/0048A61M15/0075A61M15/0081A61M15/00
Inventor L.R.G.阿维森W.贝克韦尔P.坎贝尔C.B.J.格鲁姆布里奇J.D.约翰J.O.B.兰德格伦C.兰德斯特罗姆M.里特菲尔德特J.斯温伯格
Owner ASTRAZENECA AB