US4034753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas anesthesia machine
Assignee: Individual
•
Filing: 1975-09-29
•
Granted: 1977-07-12
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Expires: 1995-09-29
Abstract
Abstract An anesthetic machine is provided with a means of supplying oxygen with or without an anesthetic which is supplied in measured quantities to the patient, whether a human or other animal. The anesthesia is provided in accurate dosage to the human or animal.
Inventors
- 👤 Allan A. Connel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:18
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/104; A61M16/1005; A61M16/1015
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
An anesthesia device including: an exhalation duct, a carbon dioxide absorption chamber to which said duct is connected, a dry evaporator chamber connected to said absorption chamber for receiving gases therefrom, a breathing bag connected to said dry evaporator chamber to receive gases passing therethrough, an inhalation duct extending from the interior of said breathing bag, said dry evaporator chamber including a series of spaced inclined baffles over which volatile liquid anesthetic may flow first in one direction and then in the opposite direction, at least one pressurized volatile liquid anesthetic container, a metering vial connected thereto by a tubular duct, a manually operable normally closed valve in said tubular duct for supplying a predetermined amount of volatile liquid anesthetic to said metering vial, a drip chamber connected to said metering vial to receive the liquid anesthetic a drop at a time, and means connecting said drip chamber to the dry evaporator chamber above the uppermost of said baffles.
Claim 2
Dependent Claim
159 words
An anesthesia device including: an exhalation duct, a carbon dioxide absorption chamber to which said duct is connected, a dry evaporator chamber connected to said absorption chamber for receiving gases therefrom, a breathing bag connected to said dry evaporator chamber to receive gases passing therethrough, an inhalation duct extending from the interior of said breathing bag, said dry evaporator chamber including a series of spaced inclined baffles over which volatile liquid anesthetic may flow first in one direction and then in the opposite direction, at least one pressurized volatile liquid anesthetic container, a metering vial connected thereto by a tubular duct, a manually operable normally closed valve in said tubular duct for supplying a predetermined amount of volatile liquid anesthetic to said metering vial, a drip chamber connected to said metering vial to receive the liquid anesthetic a drop at a time, and means connecting said drip chamber to the dry evaporator chamber above the uppermost of said baffles.
Claim 3
Dependent Claim
27 words
The structure of claim 1 and including a by-pass for said gases from said carbon dioxide absorption chamber to said inhalation duct, by-passing said dry evaporator chamber.
Claim 4
Dependent Claim
19 words
The structure of claim 1 and in which said vial and said drip chamber are formed of transparent material.
Claim 5
Dependent Claim
59 words
The structure of claim 1 and including a second supply of pressurized liquid anesthetic, a second metering vial connected to said second supply by a second tubular duct, a second manually operable normally closed valve in said second tubular duct, and means connecting said second metering vial to said drip chamber to deliver anesthetic from said second metering vial.
References Cited (Backward Citations)
US3123071A
Cited
US1061539A
Cited
FR548092A
Cited
FR604587A
Cited
US1903301A
Cited
US2104988A
Cited
US2141794A
Cited
US2241535A
Cited
FR1133728A
Cited
US3221737A
Cited
US3620213A
Cited
US3794027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |