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US 11,116,917 B2Granted
Dispensing device
AssigneePfizer Inc.
InventorsPeter J. Houzego, John Kelshaw Conway, Martin Douglas Pearl, Andrew Mark Bryant
Life of this patent
Estimating the term…
Abstract
A device for dispensing individual doses of powder from respective pockets of a disc-shaped carrier by outwardly rupturing a lidding foil by means of pressure on an opposite side surface, the device providing individual respective deaggregation flow paths for each pocket, split airstreams allowing improved entrainment of powder, a cam mechanism for outwardly rupturing the pockets, an indexing mechanism linked to the cam mechanism and a dose counter.
Claims53
A device for dispensing powdered medicaments, comprising at least one carrier bearing a plurality of respective pockets, each pocket holding a dose of a powdered medicament;
- a mouthpiece through which to inhale an airstream carrying the dose of the powdered medicament from an opened pocket of the plurality of respective pockets;
- an indexing mechanism for indexing the at least one carrier between the respective pockets, from a storage position to a discharge position;
- a first counter ring having a first display surface displaying numbers on the first display surface, the first counter ring being rotatable about a counter axis;
- and a second counter ring having a second display surface indicating tens counts, the second counter ring being rotatable about the counter axis;
- the first counter ring being driven with the indexing mechanism, the second counter ring being positioned within the first counter ring, wherein the first display surface and the second display surface are planar and perpendicular to the counter axis.
2 more elements
A device for dispensing powdered medicaments, comprising
- a first carrier bearing a plurality of respective pockets and a second carrier bearing a plurality of respective pockets, each pocket of the first and second carriers holding a dose of a powdered medicament;
- a mouthpiece through which to inhale an airstream carrying the dose of the powdered medicament from an opened pocket of the plurality of respective pockets;
- an indexing mechanism for indexing the at least one carrier between the respective pockets, from a storage position to a discharge position, the indexing mechanism being configured to index each of the first carrier and the second carrier between respective pockets thereof;
- a first counter ring having a first display surface displaying numbers on the first display surface, the first counter ring being rotatable about a counter axis;
- a second counter ring having a second display surface indicating tens counts, the second counter ring being rotatable about the counter axis;
- the first counter ring being driven with the indexing mechanism, the second counter ring being positioned within the first counter ring, the first display surface and the second display surface being planar and perpendicular to the counter axis;
- a housing enclosing the at least one carrier;
- and
- a priming lever extending out of the housing, the priming lever being configured to rotate about an axis of the device, the priming lever having a first position and a second position such that a movement from the first position to the second position is arranged to prime the device,
- wherein priming the device comprises exposing at least one dose of powdered medicament carried by the at least one carrier;
- and a movement of the priming lever operates the indexing mechanism to index the device such that two unused and unopened pockets of powdered medicament, one from the first carrier and one from the second carrier, are moved into a position for dispensing and are opened.
8 more elements
A device for dispensing powdered medicaments, comprising
- at least one carrier bearing a plurality of respective pockets, each pocket holding a dose of a powdered medicament;
- a mouthpiece through which to inhale an airstream carrying the dose of the powdered medicament from an opened pocket of the plurality of respective pockets;
- an indexing mechanism for indexing the at least one carrier between the respective pockets, from a storage position to a discharge position;
- a first counter ring having a first display surface displaying numbers on the first display surface, the first counter ring being rotatable about a counter axis;
- and
- a second counter ring having a second display surface indicating tens counts, the second counter ring being rotatable about the counter axis;
- the first counter ring being driven with the indexing mechanism, the second counter ring being positioned within the first counter ring, the first display surface and the second display surface being planar and perpendicular to the counter axis;
- a housing enclosing the at least one carrier;
- a mouthpiece cover formed as a separate component from the housing, the mouthpiece cover being configured to be rotated relative to the housing to expose the mouthpiece;
- and
- a priming lever extending out of the housing, the priming lever being configured to rotate about an axis of the device, the priming lever having a first position and a second position such that a movement from the first position to the second position is arranged to prime the device, wherein priming the device comprises exposing at least one dose of powdered medicament carried by the at least one carrier;
- and a movement of the priming lever operates the indexing mechanism to index the device such that at least one unused and unopened pocket of powdered medicament is moved into a position for dispensing and is opened.
9 more elements
Dependencies are inferred from the claim text.