Powder Inhaler and Powder Inhalation Set
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Accused Products
Abstract
The invention relates to a powder inhaler and to a powder inhaler set that contains the powder inhaler. The powder inhaler comprises two half-shells (3, 4), which can be or are articulated to each other and which enclose an air inlet region, a powder deposition region and powder release region, and an outlet region in a joined arrangement, through which regions a fluid path extends. At least one of the half shells (3, 4) has at least one air inlet opening (8) in the air inlet region, and at least one air-swirling structure (5) is present in the air inlet region, which air-swirling structure defines the fluid path between the at least one air inlet opening (8) and the powder deposition and release region. Furthermore, one of the half-shells (3, 4) has at least one powder-accommodating recess (9) in the powder deposition region and powder release region, while the outlet region has at least one deagglomeration structure (17, 17′) and an outlet for aerosol, which outlet is formed by the half-shells (3, 4).
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Citations
28 Claims
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1-10. -10. (canceled)
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11. A powder inhaler (1), comprising:
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two flat, elongate half shells (3, 4) connectable or connected to each other by an articulated connection and, in a joined arrangement of the half shells, enclosing an air inlet area, a powder deposition and release area, and an outlet area through which a fluid path is extending, wherein the half shells (3, 4) each are rimmed by sidewalls and a wall section opposite the outlet area; wherein, in the air inlet area, at least one of the half shells (3, 4) comprises at least one air inlet opening (8), which is arranged on the wall section (31, 41), and wherein at least one air supply channel delimited by guide webs (6) extends from the at least one air inlet opening (8) to the powder deposition and release area, wherein the at least one air supply channel has a cross-section that is tapering in the direction toward the powder deposition and release area, and wherein the at least one air supply channel defines the fluid path between the at least one air inlet opening (8) and the powder deposition and release area; wherein at least one air swirling structure (5) is disposed in the at least one air supply channel; wherein, in the powder deposition and release area, one of the half shells (3, 4) comprises at least one powder receiving depression (9) for receiving an active ingredient depression (101) of a blister element (100), wherein guide walls (7) are provided that, in the joined arrangement, frame the at least one powder receiving depression (9) along the fluid path on two sides and extend away from outermost guide webs (6) extending to the at least one powder depression (9); wherein a cross-section of the fluid path between the powder deposition and release area and the outlet area widens downstream of a passage through the powder receiving depression (9) delimited by the guide walls (7); wherein the outlet area has a tapering outlet end and an outlet for aerosol is formed by the half shells, wherein the outlet area comprises one or more de-agglomeration structures (17, 17′
);wherein, for opening an active ingredient depression (101) of a blister element (100) inserted into the powder inhaler (1), a pricker is provided that is elastically supported in powder inhaler relative to the at least one powder receiving depression (9) and/or the half shells (3, 4), at the level of the at least one powder receiving depression (9), delimit in the joined arrangement an opening on the sidewalls (32, 42) of the half shells (3, 4), wherein, when a blister element (100) is inserted into the powder inhaler, a cover plate that closes off an active ingredient depression (101) of the blister element (100) is projecting outwardly from the opening. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification