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US 5,896,855 AGranted
Multi dose inhaler apparatus
AssigneeRhone-Poulenc Rorer S.A.
InventorsMichael A. Hobbs, John R. Calvert, Robert S. Cook, Roy Trunley, Gordon T. Simpkin
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AssigneeRhone-Poulenc Rorer S.A.
InventorsMichael A. Hobbs, John R. Calvert, Robert S. Cook, Roy Trunley, Gordon T. Simpkin
Estimating the term…
An inhaler for inhalation of a medicament from a pierced capsule has a swirling or emptying chamber where the capsule is emptied by inhalation action of an operator. A rotary magazine for a multi-unit does inhaler which holds a number of capsules containing a medicament in a number of recesses arranged around the periphery of the magazine. The capsules are held in place by pins or plugs at both ends. Either the capsules are pierced before being loaded into the magazine or they are pierced by the pins when they are loaded into the magazine. In either case a seal may be provided around the ends of the capsules near the holes which are plugged to keep them fresh. When a recess is rotated to a particular position within the magazine then it releases its capsule. Contents of a capsule are drawn out during inhalation when the capsule is in the swirling chamber. A motor can be used to operate the magazine.
A rotary magazine for use in an inhaler, comprising a plurality of recesses for holding pierced capsules, means for holding the capsules, means for plugging pierced holes in the capsules, and means to release said capsules one at a time from said magazine, wherein said holding means and plugging means are provided in a plurality of individual recesses.
An inhaler comprising a capsule-emptying chamber, a nozzle through which air can be exhausted from said capsule-emptying chamber by inhalation, a magazine for providing one capsule at a time from a plurality of capsules to said capsule-emptying chamber through a use position in said magazine and ejecting means for removing a spent capsule from the capsule-emptying chamber into storage means within the inhaler.
An inhaler comprising a swirling chamber having first and second generally parallel opposed walls and a peripheral wall with a chordal chamber recess therein, a nozzle through which air flow through said chamber can be induced by inhalation, and a magazine having recesses for capsules to be presented transversely to their lengths to said chamber, wherein said first and second walls are spaced apart by less than the length of the magazine recesses, the width of said swirling chamber is greater than the length of the magazine recesses, and said magazine recesses are sequentially presented to said chamber to from the chordal chamber recess.
An inhaler comprising a capsule-emptying chamber, a nozzle through which air can be exhausted from said capsule-emptying chamber by inhalation, a magazine for providing one capsule at a time from a plurality of capsules to the capsule-emptying chamber through a use position in said magazine, a motor for controlling operation of the magazine and provision of capsules to the capsule-emptying chamber, and ejecting means for removing a spent capsule from the capsule-emptying chamber into storage means within the inhaler.
Dependencies are inferred from the claim text.