Inhalation device employing blister packs with cavities and alignment slits
AssigneeAstraZeneca AB
InventorsCarina Ekelius, Per-Åke Ohlsson, Anders Selmer
Life of this patent
Estimating the term…
Abstract
The present invention relates to a blister pack (12) having a plurality of blisters (13) each holding a dose of a powdered medicament comprising a lower base (18) containing a plurality of cavities (19) for the powdered medicament and an upper sealing foil layer (20) which covers the lower base (18) to form the blisters (13). Each cavity (19) is provided with at least one adjacent slit (21) formed by scoring the foil layer (20) and a lower base (18). The slit (21) ensuring accurate penetration of a cavity (19) by a suction tube through which a user can inhale the contents of the cavity (19).
Claims11
A blister pack having a plurality of blisters each holding a dose of a powdered medicament comprising a lower base containing a plurality of cavities for the powdered medicament and an upper scaling foil layer which covers the lower base to form the blisters, wherein each cavity is provided with at least one adjacent slit formed by scoring the foil layer and lower base, the slit cooperating with a respective guide arm on a suction tube to ensure accurate penetration of a cavity by a suction tube through which a user can inhale said dose in said cavity.
A blister pack assembly comprising
- a blister pack having a plurality of blisters each holding a dose of a powdered medicament comprising a lower base containing a plurality of cavities for the powdered medicament and an upper sealing foil layer which coven the lower base to form the blisters, wherein each cavity is provided with at least one adjacent slit formed by scoring the foil layer and lower base, the slit cooperating with a respective guide and on a suction tube to ensure accurate penetration of a cavity by a suction tube through which a user can inhale said dose in said cavity, and
- a carrier for the blister pack.
An inhalation device comprising
- a blister pack assembly comprising
- a blister pack having a plurality of blisters each holding a dose of a powdered medicament comprising a lower base containing a plurality of cavities for the powdered medicament and an upper sealing foil layer which covers the lower base to form the blisters, wherein each cavity is provided with at least one adjacent slit formed by scoring the foil layer and lower base, the slit cooperating with a respective guide arm on a suction tube to ensure accurate penetration of a cavity by a suction tube through which a user can inhale said dose in said cavity, and
- a carrier for the blister pack, and
- a suction tube which is constructed for cooperation with the blister pack assembly having a distal end which can penetrate the foil above a cavity a proximal end through which the user inhales and at least one guide arm which accurately locates the distal end of the suction tube in a cavity by penetrating the blister pack assembly.
Dependencies are inferred from the claim text.