Inhalation device
First Claim
1. A device for the administration of powdered inhalation medicament contained initially in a medicament capsule having at least one aperture formed therein, said device comprising:
- a swirl chamber adapted to receive the medicament capsule;
a mouthpiece communicating with the swirl chamber and separated therefrom by a grid;
at least one air inlet in tangential communication with the swirl chamber whereby air can be drawn through the device via the mouthpiece to cause a swirling air flow through the swirl chamber; and
a cover member, having a continuous substantially planar inner surface, provided on the base of the swirl chamber remote from the mouthpiece;
said cover being moveable between a first position in which a medicament capsule can be inserted in the swirl chamber and a second position in which such a medicament capsule can be retained in the swirl chamber and rotated upon air being drawn through the device, thereby dispensing a medicament contained in such a medicament capsule;
said device having no capsule piercing means.
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Accused Products
Abstract
A device for the administration of powdered inhalation medicament contained initially in a capsule having at least one aperture formed therein, comprising a swirl chamber (1) adapted to receive the medicament capsule; a mouthpiece (2) communicating with the swirl chamber (1) and separated therefrom by a grid (4); at least one air inlet (5) in tangential communication with the swirl chamber (1) whereby air can be drawn through the device via the mouthpiece (2) to cause a swirling air flow through the swirl chamber (1); and a cover member (7), having a continuous substantially planar inner surface, provided on the base of the swirl chamber (1) remote from the mouthpiece (2); said cover (7) being moveable between a first position in which the capsule can be inserted into the swirl chamber (1) and a second position in which the capsule is retained in the swirl chamber (1) and rotates upon air being drawn through the device, thereby dispensing the medicament contained therein.
70 Citations
11 Claims
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1. A device for the administration of powdered inhalation medicament contained initially in a medicament capsule having at least one aperture formed therein, said device comprising:
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a swirl chamber adapted to receive the medicament capsule; a mouthpiece communicating with the swirl chamber and separated therefrom by a grid; at least one air inlet in tangential communication with the swirl chamber whereby air can be drawn through the device via the mouthpiece to cause a swirling air flow through the swirl chamber; and a cover member, having a continuous substantially planar inner surface, provided on the base of the swirl chamber remote from the mouthpiece; said cover being moveable between a first position in which a medicament capsule can be inserted in the swirl chamber and a second position in which such a medicament capsule can be retained in the swirl chamber and rotated upon air being drawn through the device, thereby dispensing a medicament contained in such a medicament capsule; said device having no capsule piercing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for administering a powdered inhalation medicament comprising:
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inserting a capsule having at least one aperture formed therein and containing a powdered inhalation medicament into a device having a swirl chamber adapted to receive the medicament capsule, said device further having a mouthpiece communicating with the swirl chamber, the swirl chamber having an air inlet positioned tangentially to the swirl chamber and in communication with the mouthpiece, such that air drawn through the device via the mouthpiece creates a circumferential stream through the chamber which causes the capsule to rotate; and drawing an air stream through the swirl chamber in the direction of the mouthpiece causing the capsule to rotate in the swirl chamber and dispense the medicament contained through the aperture into the air stream and thence, into the mouthpiece; said device having no capsule piercing means. - View Dependent Claims (11)
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Specification