US3851645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhalation anesthesia device
Assignee: Individual
•
Filing: 1973-04-18
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Granted: 1974-12-03
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Expires: 1993-04-18
Abstract
Abstract A device for inducing anesthesia in animals including a variable supply of air under a variable pressure, a source of oxygen and a flap valve arranged such that either atmospheric air, oxygen, or a mixture of these gases may be supplied to the animal or patient through a vaporizing chamber containing an anesthesia and having a by-pass in parallel relation thereto and including a valve structure controlling the flow of gas through the chamber and bypass.
Inventors
- 👤 A Connel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:31
CPC Classifications
A; A61; A61D; A61D7/00; A61D7/04; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
215 words
An inhalation anesthesia device including an elongated chamber, an end clOsure at one end of said chamber, an end closure at the other end of said chamber, a first partition extending across said chamber in spaced relation to said one end closure defining, therebetween, a receiving chamber, an inlet to said receiving chamber, means supplying pressurized gas to said inlet, a second partition in spaced relation to the other end of said chamber defining a delivery chamber therebetween, an outlet from said delivery chamber, means for connecting said outlet to a patient; a by-pass within said elongated chamber extending between said first and second partition connecting said receiving chamber and said outlet chamber, a plurality of spaced foraminous absorbent members extending across said elongated chamber between said partitions capable of absorbing anesthetic liquid in said elongated chamber, an inlet passage through said first partition, an outlet passage through said second partition, a flap valve intercepting said by-pass and one of said passages regulating the flow of fluid through said by-pass and through the portion of said elongated chamber between said partitions outwardly of said by-pass and operable to open said by-pass and close said one passage, open said one passage and close said by-pass, or proportion the flow through said by-pass and said one passage.
Claim 2
Dependent Claim
215 words
An inhalation anesthesia device including an elongated chamber, an end clOsure at one end of said chamber, an end closure at the other end of said chamber, a first partition extending across said chamber in spaced relation to said one end closure defining, therebetween, a receiving chamber, an inlet to said receiving chamber, means supplying pressurized gas to said inlet, a second partition in spaced relation to the other end of said chamber defining a delivery chamber therebetween, an outlet from said delivery chamber, means for connecting said outlet to a patient; a by-pass within said elongated chamber extending between said first and second partition connecting said receiving chamber and said outlet chamber, a plurality of spaced foraminous absorbent members extending across said elongated chamber between said partitions capable of absorbing anesthetic liquid in said elongated chamber, an inlet passage through said first partition, an outlet passage through said second partition, a flap valve intercepting said by-pass and one of said passages regulating the flow of fluid through said by-pass and through the portion of said elongated chamber between said partitions outwardly of said by-pass and operable to open said by-pass and close said one passage, open said one passage and close said by-pass, or proportion the flow through said by-pass and said one passage.
Claim 3
Dependent Claim
29 words
The structure of claim 1 and including a source of oxygen under pressure connected to said receiving chamber to provide at least a portion of said pressurized gas supply.
Claim 4
Dependent Claim
16 words
The structure of claim 1 and in which said valve is enclosed within said second partition.
Claim 5
Dependent Claim
25 words
The structure of claim 1 and including a flap valve communicating with said receiving chamber capable of opening when a negative pressure is experienced therein.
Claim 6
Dependent Claim
31 words
The structure of claim 1 and including baffles extending partially across said elongated chamber acting to direct the flow of fluid toward the bottom of said elongated chamber between said partitions.
Claim 7
Dependent Claim
21 words
The structure of claim 5 and in which said baffles are adjacent to, and assist in supporting, said foraminous absorbent members.
Claim 8
Dependent Claim
23 words
The structure of claim 1 and including an inlet for liquid anesthetic communicating with the portion of said elongated chamber between said partitions.
Claim 9
Dependent Claim
14 words
The structure of claim 1 and in which said elongated chamber is substantially cylindrical.
Claim 10
Dependent Claim
26 words
The structure of claim 2 and in which said air pressure supply means and said oxygen source are selectively or simultaneously connected to said receiving chamber.
References Cited (Backward Citations)
FR390938A
Cited
US2572199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |