Dry powder inhaler comprising a casing with a first casing portion and a second casing portion
Inventors
Lastow, Orest • Arvidsson, Lars
Assignees
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Publication Number
US-11607509-B2
Publication Date
2023-03-21
Expiration Date
Abstract
A dry-powder inhaler may include a first casing portion, a second casing portion, and a hinge arrangement connecting the first casing portion and the second casing portion. The dry-powder inhaler may be assembled by folding the first casing portion and the second casing portion together. The first casing portion may include a cavity for receiving a dose blister foil, said cavity being adapted to contain a dry-powder medicament. The first casing portion and the second casing portion when folded together may be adapted to form an inlet for allowing a lidding foil extending out there from and an outlet for providing the medicament.
Core Innovation
The invention relates to a hinged, two-part casing dry-powder inhaler in which a first casing portion and a second casing portion are connected by a hinge arrangement that comprises an outlet. The first casing portion includes a cavity for receiving a lidding foil, the cavity being adapted to contain a dry-powder medicament. The inhaler is assembled by folding the first casing portion and the second casing portion together via the hinge arrangement such that the hinge-connected casing portions form an inlet and the outlet for delivering medicament to a user.
When folded, the first casing portion and the second casing portion are adapted to form an inlet proximate the first ends for allowing the lidding foil to extend out therefrom and an outlet proximate the second ends for providing the medicament to a user. The second casing portion comprises a flow directing member disposed between the cavity and the inlet when folded, the flow directing member being adapted to direct flow entering through the inlet towards the cavity. This internal flow direction relates to shaping how medicament is handled inside the inhaler.
The disclosed manufacturing and structure focus on simplifying assembly and reducing issues associated with tolerance errors, component handling, and coupling. The casing is described as being formed via hinge-connected one-piece or integrated hinge injection moulding. Internal flow directing elements include features such as a protruding shoulder at the inlet and internal flow directing elements with tapering geometry, including drip/tear-shaped tapered geometry toward the outlet, as well as inner walls with inwardly directing portions to converge flow toward the outlet.
Claims Coverage
The document contains two independent claims covering a hinged dry-powder inhaler device and a method for providing the dry-powder inhaler. Across these claims, the core inventive features are the hinge-connected two-part casing folded to form an inlet and an outlet, a cavity receiving a lidding foil containing dry-powder medicament, and a flow directing member disposed between the cavity and the inlet to direct flow towards the cavity.
Hinged two-part casing assembled by folding to form inlet and outlet
A dry-powder inhaler comprising a casing having a first casing portion and a second casing portion connected by a hinge arrangement comprising an outlet, wherein the dry-powder inhaler is assembled by folding the first casing portion and the second casing portion together via the hinge arrangement, and wherein the first casing portion and the second casing portion when folded together form an inlet proximate the first ends and the outlet proximate the second ends.
Cavity receiving lidding foil containing dry-powder medicament
The first casing portion includes a cavity for receiving a lidding foil, the cavity being adapted to contain a dry-powder medicament, with the lidding foil extending out from the inlet when the casing portions are folded together.
Flow directing member between cavity and inlet directing flow toward cavity
The second casing portion comprises a flow directing member disposed between the cavity and the inlet when the first casing portion and the second casing portion are folded together, the flow directing member being adapted to direct flow entering through the inlet towards the cavity.
Assembling the inhaler by folding via the hinge arrangement
A method for providing a dry-powder inhaler comprising assembling the inhaler by folding the first casing portion and second casing portion together via the hinge arrangement, wherein the casing and functional relationships are configured as recited.
Across the independent claims, the coverage centers on a hinged two-part casing dry-powder inhaler assembled by folding, where the folded configuration defines an inlet for a lidding-foil extension and an outlet for medicament delivery. The claims further require a cavity adapted to contain dry-powder medicament sealed by a lidding foil and a flow directing member disposed between the cavity and inlet to direct flow entering through the inlet towards the cavity.
Stated Advantages
Simplification of manufacturing and assembly.
Cost reduction.
Reduced tolerance errors and coupling issues.
Reduced component handling.
Improved de-aggregation/flow via the inlet shoulder and internal flow directing elements.
Documented Applications
Providing a dry-powder inhaler by assembling a hinged, two-part casing via the hinge arrangement so that a lidding foil extends out from an inlet and medicament is delivered through an outlet to a user.
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