Patent US5074294A successfully refreshed from Google Patents.
US5074294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for dispensing metered amounts of aerosol for inhalation
Assignee: Chiesi Farmaceutici SpA
•
Filing: 1989-06-21
•
Granted: 1991-12-24
•
Expires: 2009-06-21
Abstract
Abstract The invention concerns an apparatus for the administration of drugs in form of metered aerosol, consisting of an expansion chamber comprising two coaxial tubes freely slidable within one another and detachable. The external tube has an open end and a tapered end on which the chamber month-piece is mounted. The internal tube has an open end which may be inserted into the external tube and on opposite end on which the month-piece of a conventional dispenser containing the active principle in form of pressurized aerosol is stuck. The apparatus allows a better penetration of the drug into the airways up to the deepest zones of the bronchial tree.
Inventors
- 👤 Paolo Chiesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:36
CPC Classifications
A; A61; A61M; A61M15/00; A61M15/009; A61M15/0001; A61M15/0013; A61M15/0016; A61M15/0086; A61M15/0088
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
195 words
A device for the administration of a drug to a patient in the form of a metered aerosol spray comprising an expansion chamber (3) consisting of an external tube (2) and an internal tube (1), the internal tube (1) being freely slidable within the external tube (2), said tubes delimiting said expansion chamber (3), the volume of which can be varied according to the amount of extension of said internal tube (1) relative to said external tube (2), said external tube (2) having an open end (4) for inserting the internal tube (1) and having a tapered end (5) opposite to said open end, a one-way valve (8) being housed in said tapered end, a first mouthpiece (9) open towards the patient being mounted on said valve, the internal tube (1) having an open end (10) that delimits the volume of said chamber (3) and having an opposite end (11), said end (11) having an opening (13), a second mouthpiece (15) of a conventional metered aerosol being placed in said opening, said tubes (1), (2) of said expansion chamber (3), said mouthpiece (9) and said opening (13) of said aerosol being on the same axis.
Claim 2
Independent Claim
195 words
A device for the administration of a drug to a patient in the form of a metered aerosol spray comprising an expansion chamber (3) consisting of an external tube (2) and an internal tube (1), the internal tube (1) being freely slidable within the external tube (2), said tubes delimiting said expansion chamber (3), the volume of which can be varied according to the amount of extension of said internal tube (1) relative to said external tube (2), said external tube (2) having an open end (4) for inserting the internal tube (1) and having a tapered end (5) opposite to said open end, a one-way valve (8) being housed in said tapered end, a first mouthpiece (9) open towards the patient being mounted on said valve, the internal tube (1) having an open end (10) that delimits the volume of said chamber (3) and having an opposite end (11), said end (11) having an opening (13), a second mouthpiece (15) of a conventional metered aerosol being placed in said opening, said tubes (1), (2) of said expansion chamber (3), said mouthpiece (9) and said opening (13) of said aerosol being on the same axis.
Claim 3
Dependent Claim
43 words
The device according to claim 1 wherein the volume of said expansion chamber (3) is varied between about 200 and 600 ml, the total length is varied between 100 and 300 mm and the maximum diameter is varied between 50 and 80 mm.
Claim 4
Dependent Claim
34 words
The device according to claim 1 wherein said one way valve (8) prevents the aerosol spray delivered into said chamber from exiting before the inhalation, and prevents air from being expired into the apparatus.
Claim 5
Dependent Claim
14 words
The device according to claim 1, wherein said tubes (1), (2) are completely separable.
Claim 6
Dependent Claim
39 words
The device according to claim 1 wherein said metered aerosol has a can, said can is housed inside said internal tube (1) and said internal tube (1) is fixed into said external tube (2) for storage and transportation assembly.
Claim 7
Dependent Claim
16 words
The device according to claim 1 wherein said tapered end (5) has a circular cross section.
Claim 8
Dependent Claim
17 words
The device according to claim 1 wherein four spokes (6) are placed on said tapered end (5).
Claim 9
Dependent Claim
28 words
The device according to claim 1 wherein said first mouthpiece of said expansion chamber (9) and said second mouthpiece of said metered aerosol have the same cross section.
Claim 10
Dependent Claim
13 words
The device according to claim 1 wherein said one-way valve has tabs (7).
References Cited (Backward Citations)
US3788316A
Cited
US3809294A
Cited
US3897779A
Cited
US3994421A
Cited
US4641644A
Cited
US4470412A
Cited
US4690332A
Cited
US4637528A
Cited
US4534343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |