US3687137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small animal anesthesia machine
Assignee: Snyder Manufacturing Co Inc
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Filing: 1969-11-13
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Granted: 1972-08-29
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Expires: 1989-11-13
Abstract
Abstract Anesthetizing apparatus capable of use with anesthetic agents requiring an in-line arrangement, as well as those necessitating the use of an out-of-line arrangement. The apparatus includes the main body member having a plurality of internal passages which provide a closed system or circuit, and further defining two separate and distinct paths within said circuit. Waste gas purging means, vaporizer means and oxygen inlet means are connected to the body member in communication with said int
Inventors
- 👤 Donald W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:56
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/18; A61M16/1005; A61M16/1015; A61M16/104; A61M16/0057; A61M16/0078; A61M16/08; A61M16/22; A61M2205/00; A61M2205/12; A61M2250/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
252 words
Apparatus for administering anesthesia to animals or the like, said apparatus comprising: a main body member having an inlet port and an outlet port, an internal passage means for providing a closed system for anesthetic gas; a canister connected to said body member, said canister adapted to contain a purging agent of the type used for removing carbon dioxide from the gas exhaled by said animal, said canister having an inlet in communication with said body inlet port, and an outlet opening for communication with said internal passage means such that exhaled gases will be passed through said purging agent canister and into said internal passage means; a vaporizer assembly connected to said body member, said vaporizer assembly having inlet and outlet openings; said internal passage means providing two paths from said canister outlet to the outlet port of said body member, one said path communicating directly with said outlet port, and the other said path communicating with said vaporizing assembly; inlet means for oxygen connected to said other path intermediate said canister outlet and said vaporizer assembly; and control means for said apparatus, including means for selectively connecting said canister outlet to one or the other of said paths, such that said apparatus may be used as either an in-line system or an out-of-line system for adminstering anesthetic gas, and means for selectively blocking said vaporizer assembly inlet and outlet openings so that the amount of gas introduced into said vaporzier assembly may be regulated, and said assembly bypassed if desired.
Claim 2
Dependent Claim
252 words
Apparatus for administering anesthesia to animals or the like, said apparatus comprising: a main body member having an inlet port and an outlet port, an internal passage means for providing a closed system for anesthetic gas; a canister connected to said body member, said canister adapted to contain a purging agent of the type used for removing carbon dioxide from the gas exhaled by said animal, said canister having an inlet in communication with said body inlet port, and an outlet opening for communication with said internal passage means such that exhaled gases will be passed through said purging agent canister and into said internal passage means; a vaporizer assembly connected to said body member, said vaporizer assembly having inlet and outlet openings; said internal passage means providing two paths from said canister outlet to the outlet port of said body member, one said path communicating directly with said outlet port, and the other said path communicating with said vaporizing assembly; inlet means for oxygen connected to said other path intermediate said canister outlet and said vaporizer assembly; and control means for said apparatus, including means for selectively connecting said canister outlet to one or the other of said paths, such that said apparatus may be used as either an in-line system or an out-of-line system for adminstering anesthetic gas, and means for selectively blocking said vaporizer assembly inlet and outlet openings so that the amount of gas introduced into said vaporzier assembly may be regulated, and said assembly bypassed if desired.
Claim 3
Dependent Claim
64 words
Apparatus as defined in claim 1 wherein said means for selectively blocking the vaporizer inlet and outlet openings includes a movable member carried by said body and adapted to have its position varied such that said vaporizer assembly is bypassed by the gas from the purging agent canister, or all or a desired portion of said gas will be channeled to said vaporizer assembly.
Claim 4
Dependent Claim
28 words
Apparatus as defined in claim 1 wherein said inlet means for the oxygen includes a flow meter for admitting a prescribed amount of oxyGen into said closed circuit.
Claim 5
Dependent Claim
35 words
Apparatus as defined in claim 3 where said inlet means for the oxygen further includes a valve assembly permitting the flow meter to be bypassed whereby oxygen can be introduced directly into said closed circuit.
Claim 6
Dependent Claim
42 words
Apparatus as defined in claim 1 wherein said body member further includes a reservoir bag port communicating with said other path, and a reservoir bag attached to said port enabling the person administering the anesthestic to induce breathing in the anesthetized animal.
Claim 7
Dependent Claim
44 words
Apparatus as defined in claim 5 wherein said internal passages further include a pressure relief valve, said valve including means to lock it in a closed position such that it cannot be opened upon the inducement of breathing by use of said reservoir bag.
Claim 8
Dependent Claim
82 words
Apparatus as defined in claim 1 wherein said control means for selectively connecting the canister outlet to one or the other of said paths includes a plate-like member having an aperture therein and disposed atop said canister such that said aperture provides communication thereto, said plate being selectively movable between a first position wherein said opening operably connects the canister with one of said paths, and a second position wherein said aperture operably connects said canister with the other of said paths.
Claim 9
Dependent Claim
38 words
Apparatus as defined in claim 1, further including flexible tube means which comprise as an endotrachea member received by the animal, an inhalation branch connected to said outlet port, and an exhalation branch connected to said inlet port.
Claim 10
Dependent Claim
28 words
Apparatus as defined in claim 1 wherein a one-way valve assembly provides for communication between each said inlet port and said outlet port and the internal passage means.
Claim 11
Dependent Claim
132 words
Apparatus as defined in claim 9 wherein at least one of said valve assemblies includes, a restricter member disposed in the passageway communicating with said port, said restricter member having a tubular wall section disposed transversely of said passageway with an opening in the lower portion thereof so that gas may freely enter the lower end of said restricter member and be channeled upwardly toward the upper end thereof, a reciprocal disc valve member engaged over the upper end of said tubular restricter member enclosing said end, said disc being disengageable from said upper end by gas travelling through said restricter member, while precluding gas from entering the restricter member from the upper end thereof, and passage means providing communication from the upper end of said restricter member to said body port.
Claim 12
Dependent Claim
177 words
Apparatus for administering anesthesia to animals, or the like, said apparatus comprising: a main body assembly having an inhalation port and an exhalation port, internal passage means providing a closed system for movement of gas from said inhalation port to said exhalation port; a canister connected to said main body assembly and adapted to contain a purging agent of the type used for removing carbon dioxide from the exhaled waste gases of said animal, said canister having an inlet and an outlet in communication with said internal passage means, such that exhaled gases entering the body assembly pass through said purging agent prior to reaching said inhalation port; a vaporizer unit connected to said body assembly for introducing an anesthetic gas into said internal passage means of the system; the improvement wherein said body assembly comprises upper and lower plate sections, the surface of said lower section confronting the upper section having a plurality of channels formed therein such that upon assembly of said upper section thereto, said channels are covered to define said internal passage means.
Claim 13
Dependent Claim
177 words
Apparatus for administering anesthesia to animals, or the like, said apparatus comprising: a main body assembly having an inhalation port and an exhalation port, internal passage means providing a closed system for movement of gas from said inhalation port to said exhalation port; a canister connected to said main body assembly and adapted to contain a purging agent of the type used for removing carbon dioxide from the exhaled waste gases of said animal, said canister having an inlet and an outlet in communication with said internal passage means, such that exhaled gases entering the body assembly pass through said purging agent prior to reaching said inhalation port; a vaporizer unit connected to said body assembly for introducing an anesthetic gas into said internal passage means of the system; the improvement wherein said body assembly comprises upper and lower plate sections, the surface of said lower section confronting the upper section having a plurality of channels formed therein such that upon assembly of said upper section thereto, said channels are covered to define said internal passage means.
Claim 14
Dependent Claim
64 words
Apparatus as defined in claim 11, wherein said lower section includes a pair of apertures serving as inlet and outlet openings for the vaporizer unit, and there is further provided control means for selectively blocking said inlet and outlet openings connecting the vaporizer unit to the system, whereby purged waste gases may pass through said body assembly without having an anesthetic gas added thereto.
Claim 15
Dependent Claim
92 words
Apparatus as defined in claim 12 wherein said lower plate section further includes a relieved portion formed in said confronting surface such that upon assembly a chamber is provided which intersects said internal passage means, and means on the opposite surface of said lower plate section for connecting said vaporizer unit thereto, said inlet and outlet openings being formed in said lower plate section thus providing for communication between said vaporizer unit and said chamber, and said control means being disposed in said chamber for selectively blocking said inlet and outlet openings.
Claim 16
Dependent Claim
37 words
Apparatus as defined in claim 13 wherein said chamber is substantially circular in configuration, and said control means include a vane rotatably mounted within said chamber, said vane having a length proximating the diameter of said chamber.
Claim 17
Dependent Claim
74 words
Apparatus as defined in claim 11 wherein said passage means include two separate paths from the canister outlet to the inhalation port, one said path communicating directly with said inhalation port and the other path being operatively associated with the vaporizer unit to provide for the connection of said unit to the system, and means carried by said body assembly for selectively connecting one or the other of said paths with said canister outlet.
Claim 18
Dependent Claim
33 words
Apparatus as defined in claim 15, further including oxygen inlet means connected to said other path intermediate the point of connection to said canister outlet and said inlet opening for the vaporizer unit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |