US3921637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhaler for powdered medicament
Assignee: Consort Medical Ltd
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Filing: 1974-07-22
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Granted: 1975-11-25
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Expires: 1994-07-22
Abstract
Abstract An inhaler for powdered medicaments comprises a housing having a chamber for receiving a capsule containing a dose of the medicament to be dispensed. A duct in the housing has one end open to the atmosphere and the other end of the duct has its outlet in a mouthpiece which may be inserted into the mouth of a user. A passage connects the chamber to the duct and there is a manually operated pump for supplying air under pressure to the chamber. A flow sensor is arranged in the duct and there is a valve to prevent air under pressure and the medicament from entering the duct as well as means to operate the valve to allow air and medicament to enter the duct when the flow sensor detects a user inhaling through the duct. The valve is situated between the pump and the chamber, and the capsule and the chamber are so arranged and dimensioned that all the air supplied by the pump flows through the capsule when the valve is opened.
Inventors
- 👤 Annette Bennie
- 👤 Norman Leonard Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:56
CPC Classifications
A; A61; A61M; A61M15/00; A61M15/0028; A61M15/0001; A61M15/0021; A61M15/0025; A61M15/003; A61M15/0033; A61M15/0091; A61M15/0095; A61M2202/00; A61M2202/06; A61M2202/064
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
An inhaler for powdered medicaments comprising a housing, a chamber in the housing; a capsule containing a dose of the medicament to be dispensed, said capsule being located in the chamber; a duct in the housing, one end of the duct being open to the atmosphere and the other end of the duct having its outlet in a mouthpiece for insertion into the mouth of a user; an outlet pasSage connecting the chamber to the duct; manually operated pump means for supplying air under pressure to the chamber; an inlet passage means connecting the pump means to the chamber to carry all of the air supplied by the pump means into the capsule;
Claim 2
Dependent Claim
113 words
An inhaler for powdered medicaments comprising a housing, a chamber in the housing; a capsule containing a dose of the medicament to be dispensed, said capsule being located in the chamber; a duct in the housing, one end of the duct being open to the atmosphere and the other end of the duct having its outlet in a mouthpiece for insertion into the mouth of a user; an outlet pasSage connecting the chamber to the duct; manually operated pump means for supplying air under pressure to the chamber; an inlet passage means connecting the pump means to the chamber to carry all of the air supplied by the pump means into the capsule;
Claim 3
Dependent Claim
89 words
An inhaler as claimed in claim 1 in which the flow sensor comprises a movable vane mounted in the duct. valve means situated between the pump means and the chamber in the inlet passage for preventing air under pressure and medicament from entering the duct; a flow sensor arranged in the duct; and said valve means being operable to open in response to the flow sensor means to allow air under pressure and medicament to enter the duct when the flow sensor detects a user inhaling through the duct.
Claim 4
Dependent Claim
180 words
An inhaler for powdered medicaments comprising a housing having a chamber for receiving a capsule containing a dose of the medicament to be dispensed, a duct in the housing, one end of the duct being open to the atmosphere and the other end of the duct having its outlet in a mouth piece for insertion into the mouth of a user, a passage connecting the chamber to the duct, manually operated pump means for supplying air under pressure to the chamber, a vane pivotally mounted in the duct, and valve means to prevent air under pressure and the medicament from entering the duct, the valve means being arranged on a lever rigidly connected to the vane to allow air and medicament to enter the duct when the vane detects a user inhaling through the duct, in which applicator the valve means is situated between the pump means and the chamber, and the capsule and the chamber are so arranged and dimensioned that all the air supplied by the pump means flows through the capsule when the valve means is opened.
Claim 5
Dependent Claim
180 words
An inhaler for powdered medicaments comprising a housing having a chamber for receiving a capsule containing a dose of the medicament to be dispensed, a duct in the housing, one end of the duct being open to the atmosphere and the other end of the duct having its outlet in a mouth piece for insertion into the mouth of a user, a passage connecting the chamber to the duct, manually operated pump means for supplying air under pressure to the chamber, a vane pivotally mounted in the duct, and valve means to prevent air under pressure and the medicament from entering the duct, the valve means being arranged on a lever rigidly connected to the vane to allow air and medicament to enter the duct when the vane detects a user inhaling through the duct, in which applicator the valve means is situated between the pump means and the chamber, and the capsule and the chamber are so arranged and dimensioned that all the air supplied by the pump means flows through the capsule when the valve means is opened.
Claim 6
Dependent Claim
28 words
An inhaler as claimed in claim 3 in which the vane pivots about a hinge between the lever and the duct, the hinge being adjacent the valve means.
Claim 7
Dependent Claim
19 words
An inhaler as claimed in claim 3 in which the valve means is spring urged into the closed position.
Claim 8
Dependent Claim
32 words
An inhaler as claimed in claim 3 in which the chamber is adapted to receive a sealed capsule containing the medicament and means are provided to puncture the ends of the capsule.
Claim 9
Dependent Claim
30 words
An inhaler as claimed in claim 6 in which a pin controlled by a sliding member mounted externally of the housing is provided to pierce one end of the capsule.
Claim 10
Dependent Claim
39 words
An inhaler as claimed in claim 7 in which a cover is provided for closing the mouth piece when not in use, the cover being provided with an internally mounted pin to pierce the other end of the capsule.
References Cited (Backward Citations)
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Cited
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US3518992A
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US3635219A
Cited
US3831606A
Cited
US3818908A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |