US5042472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder inhaler device
Assignee: Merck and Co Inc
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Filing: 1990-10-15
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Granted: 1991-08-27
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Expires: 2010-10-15
Abstract
Abstract A powder inhaler device not requiring a propellant is disclosed which comprises a unit dose package and delivery system which is breath actuated and permits a patient to inhale through the mouth a medication in powder form for administration to the bronchia and lungs. The powder dose is contained in a compartment of the device which is sealed off from the environment by a peel-off piece of lidding material. The compartment has two apertures: one over which the mouth of the patient is placed to receive the powder medication by inhalation; and the other which permits ingress of air to aerosolize the powder medication.
Inventors
- 👤 Leonid Bunin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
A; A61; A61M; A61M15/00; A61M15/0028; A61M15/003; A61M15/0043; A61M2202/00; A61M2202/06; A61M2202/064
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
A powder inhaler device for dispensing a medicament in powder form to a patient, which is breath actuated and does not make use of a propellant, comprising (1) multiple powder medicament compartments, each compartment of sufficicent size to hold a single dose of said medicament, being essentially cylindrical in shape and from 0.15 to 0.35 inch in diameter; (2) first inhalation aperture in each powder medicament compartment surrounded by a reised ridge, over which the mouth of the patient is placed when the powder medicament is dispensed by breath actuated inhalation; (3) a second inflow aperture in each said powder medicament compartment said powder disposed with respect to the inhalalation aperture so that the powder medicament will not readily fall out of said powder medicament compartment, but always so disposed that ingress of air will aerosolize said powder medicament during breath actuated inhalation; and (4) a moisture-proof lidding material for each powder medicament compartment which sealingly covers both apertures therein, and which can be manually peeled off so as to expose both aperture of said powder medicament compartment for use.
Claim 2
Dependent Claim
180 words
A powder inhaler device for dispensing a medicament in powder form to a patient, which is breath actuated and does not make use of a propellant, comprising (1) multiple powder medicament compartments, each compartment of sufficicent size to hold a single dose of said medicament, being essentially cylindrical in shape and from 0.15 to 0.35 inch in diameter; (2) first inhalation aperture in each powder medicament compartment surrounded by a reised ridge, over which the mouth of the patient is placed when the powder medicament is dispensed by breath actuated inhalation; (3) a second inflow aperture in each said powder medicament compartment said powder disposed with respect to the inhalalation aperture so that the powder medicament will not readily fall out of said powder medicament compartment, but always so disposed that ingress of air will aerosolize said powder medicament during breath actuated inhalation; and (4) a moisture-proof lidding material for each powder medicament compartment which sealingly covers both apertures therein, and which can be manually peeled off so as to expose both aperture of said powder medicament compartment for use.
Claim 3
Dependent Claim
45 words
A powder inhaler device according to claim 1 in whicht the powder medicament compartment additionally comprises a baffle element interposed between the apertures therein which is of such size and configuration that it enhances the cyclonizing of the ingress air which aerosolizes the powder medicament.
Claim 4
Dependent Claim
65 words
A powder inhaler device according to claim 1 in which the lidding material consists of aluminum foil with a heat-sealable film backing such that it will provide a moisture-proof seal while the lidding material sealingly covers both apertures of the powder medicament compartment, while permitting the lidding material to be peeled off, exposing said apertures, but such that the powder medicament will not adhere thereto.
Claim 5
Dependent Claim
20 words
A powder inhaler device according to claim 1 wherein the configuration of the multiple powder medicament compartments is a row.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-26 | 1995-02-25 | 1995-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-26 | 1999-02-25 | 1999-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-26 | 2003-02-25 | 2003-08-27 | $7700.00 | Window Closed / Lapsed |