US3682167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medicament injector for nebulizer
Assignee: Individual
•
Filing: 1970-06-04
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Granted: 1972-08-08
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Expires: 1990-06-04
Abstract
Abstract This invention is a device for supplying medicament to a nebulizer at the rate of consumption of the medicament by the nebulizer for the purpose of avoiding the objections of contamination of the medicament as it is nebulized and of insuring that the concentration of the medicament remains constant as it is nebulized. The invention achieves its objective by providing a medicament chamber that communicates with the nebulizer through a metering passage and pneumatic means for forcing medicament from the medicament chamber through the metering passage that is responsive to the demand of the nebulizer.
Inventors
- 👤 Nikodem N Urbanowica
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:57
CPC Classifications
A; A61; A61M; A61M11/00; A61M11/06; A61M15/00; A61M15/0065; A61M2202/00; A61M2202/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
171 words
In combination with a nebulizer a medicament injector comprising a medicament chamber, a medicament metering passage of constrained cross-section extending from said chamber to the base of the nebulizer, (a) parallel flowing gas supply means for admitting gas under pressure to said medicament chamber and the base of the nebulizer, said medicament chamber being formed with a gas vent of small cross-section in the chamber upper portion venting to the (outside) atmosphere such that gas from the gas supply means is adapted to build up a pressure within the chamber to force medicament from the chamber through said medicament metering passage into the nebulizer with excess gas venting through the gas vent to the outside, said medicament metering passage of stepped and constrained cross-section adapted to restrict the flow of medicament from said chamber to the nebulizer under condition of no supply of gas to the said gas supply means and to cause medicament to accumulate in the base such that the gas may be vented therethrough to nebulize the same.
Claim 2
Dependent Claim
171 words
In combination with a nebulizer a medicament injector comprising a medicament chamber, a medicament metering passage of constrained cross-section extending from said chamber to the base of the nebulizer, (a) parallel flowing gas supply means for admitting gas under pressure to said medicament chamber and the base of the nebulizer, said medicament chamber being formed with a gas vent of small cross-section in the chamber upper portion venting to the (outside) atmosphere such that gas from the gas supply means is adapted to build up a pressure within the chamber to force medicament from the chamber through said medicament metering passage into the nebulizer with excess gas venting through the gas vent to the outside, said medicament metering passage of stepped and constrained cross-section adapted to restrict the flow of medicament from said chamber to the nebulizer under condition of no supply of gas to the said gas supply means and to cause medicament to accumulate in the base such that the gas may be vented therethrough to nebulize the same.
Claim 3
Dependent Claim
61 words
A medicament injector as claimed in claim 1, in which said medicament metering passage is defined by a tubular section and a metering valve within said tubular section, said metering valve having a lesser cross-section than said tubular section and defining with said tubular section an annular space that constitutes said metering passage, said metering valve being removable from said passage.
Claim 4
Dependent Claim
24 words
A medicament injector as claimed in claim 1, in which said gas supply means is connectible to a gas inlet supply for said nebulizer.
Claim 5
Dependent Claim
24 words
A medicament injector as claimed in claim 2, in which said gas supply means is connectible to a gas inlet supply for said nebulizer.
References Cited (Backward Citations)
US3221737A
Cited
US3473530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |