US3707965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon dioxide absorber apparatus
Assignee: Individual
•
Filing: 1970-10-22
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Granted: 1973-01-02
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Expires: 1990-10-22
Abstract
Abstract A carbon dioxide absorber apparatus for use in the administration of anesthesia, said apparatus being demountable in its entirety to a plurality of components all sterilizable in demounted condition by use of conventional autoclave equipment, said absorber apparatus having solely internal passageways to define a unidirectional path for the passage of gases therethrough, with all portions of the path being demountable and accessible for said sterilization.
Inventors
- 👤 C Guzay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:19
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/22; A61M16/10; A61M16/104
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
337 words
A carbon-dioxide absorber apparatus demountable to plural externally accessible components each capable of sterilization by autoclave methods and for use in closed circuit administration of anesthesia, wherein exhalent respiratory gases are introduced thereinto, exposed to an absorbent medium therein to remove carbon-dioxide therefrom and released for return as inhalent gases enriched with anesthetic gases, said absorber apparatus comprising: 1. a unitary absorber head having a pair of spaced, like bottom opening recesses defining a pair of head chambers and a bridging passageway formed between said head chambers, 2. a pair of canisters, each having an internal axial conduit extending outward from opposite ends thereof, each of said canisters having an open upper end and a perforate lower end and containing absorbent medium therein, 3. a pair of cup-like base members, 4. means for releasably securing said cup-like base members to said lower ends of said canisters and cimultaneously coupling sealably the upper ends of said canisters within respective ones of said recesses of said absorber head, with the axial conduits thereof respectively isolated from said head chambers, 5. demountable exhalation valve means and inhalation valve means releasably coupled to said absorber head in communication with the axial conduits of respective ones of said canisters, 6. said axial conduits each having port means located at the lower ends thereof and below the perforate lower ends of said canisters, said port means communicating with the interior of said base members, securement of said base members to said canisters closing off the lower ends of said canisters whereby a continuous interior unidirectional path for gases is established along a path defined by the exhalation valve means through said axial conduit to said associated base member to the canister interior to the one associated absorber head chamber through said passageway to the other associated absorber head chamber and through said second canister interior to said other base member and by way of said associated axial conduit thereof to and through the inhalation valve means to the exterior of the absorber apparatus.
Claim 2
Dependent Claim
337 words
A carbon-dioxide absorber apparatus demountable to plural externally accessible components each capable of sterilization by autoclave methods and for use in closed circuit administration of anesthesia, wherein exhalent respiratory gases are introduced thereinto, exposed to an absorbent medium therein to remove carbon-dioxide therefrom and released for return as inhalent gases enriched with anesthetic gases, said absorber apparatus comprising: 1. a unitary absorber head having a pair of spaced, like bottom opening recesses defining a pair of head chambers and a bridging passageway formed between said head chambers, 2. a pair of canisters, each having an internal axial conduit extending outward from opposite ends thereof, each of said canisters having an open upper end and a perforate lower end and containing absorbent medium therein, 3. a pair of cup-like base members, 4. means for releasably securing said cup-like base members to said lower ends of said canisters and cimultaneously coupling sealably the upper ends of said canisters within respective ones of said recesses of said absorber head, with the axial conduits thereof respectively isolated from said head chambers, 5. demountable exhalation valve means and inhalation valve means releasably coupled to said absorber head in communication with the axial conduits of respective ones of said canisters, 6. said axial conduits each having port means located at the lower ends thereof and below the perforate lower ends of said canisters, said port means communicating with the interior of said base members, securement of said base members to said canisters closing off the lower ends of said canisters whereby a continuous interior unidirectional path for gases is established along a path defined by the exhalation valve means through said axial conduit to said associated base member to the canister interior to the one associated absorber head chamber through said passageway to the other associated absorber head chamber and through said second canister interior to said other base member and by way of said associated axial conduit thereof to and through the inhalation valve means to the exterior of the absorber apparatus.
Claim 3
Dependent Claim
35 words
The apparatus as claimed in claim 1 in which relief valve means and pressure monitoring means respectively are removably sealably coupled to said absorber head in communication with said bridging passageway between said head chambers.
Claim 4
Dependent Claim
35 words
a pair of canisters, each having an internal axial conduit extending outward from opposite ends thereof, each of said canisters having an open upper end and a perforate lower end and containing absorbent medium therein,
Claim 5
Dependent Claim
35 words
a pair of canisters, each having an internal axial conduit extending outward from opposite ends thereof, each of said canisters having an open upper end and a perforate lower end and containing absorbent medium therein,
Claim 6
Dependent Claim
6 words
a pair of cup-like base members,
Claim 7
Dependent Claim
6 words
a pair of cup-like base members,
Claim 8
Dependent Claim
71 words
The apparatus as claimed in claim 1 in which adaptor means are provided having opposite open ends are slidably, sealingly engaged with said absorber head communicating to said head chambers, and said respective inhalation and exhalation valve means are sealably slidably coupled to one end of said adaptor means and means are provided at the other end of said adaptor means for releasably coupling the axial conduits of said canisters thereto.
Claim 9
Dependent Claim
41 words
The apparatus as claimed in claim 1 in which said Means for releasably securing comprises cap means having means for threadable securement thereof to the lower ends of said axial conduits and seatable on said exterior surface of said base members.
Claim 10
Dependent Claim
46 words
means for releasably securing said cup-like base members to said lower ends of said canisters and cimultaneously coupling sealably the upper ends of said canisters within respective ones of said recesses of said absorber head, with the axial conduits thereof respectively isolated from said head chambers,
Claim 11
Dependent Claim
46 words
means for releasably securing said cup-like base members to said lower ends of said canisters and cimultaneously coupling sealably the upper ends of said canisters within respective ones of said recesses of said absorber head, with the axial conduits thereof respectively isolated from said head chambers,
Claim 12
Dependent Claim
26 words
demountable exhalation valve means and inhalation valve means releasably coupled to said absorber head in communication with the axial conduits of respective ones of said canisters,
Claim 13
Dependent Claim
26 words
demountable exhalation valve means and inhalation valve means releasably coupled to said absorber head in communication with the axial conduits of respective ones of said canisters,
Claim 14
Dependent Claim
61 words
The apparatus as claimed in claim 4 in which said cap means includes a cap member having a perforate portion and a depending hollow stem surrounding said portion and having a free open end and a breather bag is secured over the free end of said stem, and a second cap member having a well in lieu of said hollow stem.
Claim 15
Dependent Claim
300 words
A carbon dioxide absorber apparatus demountable to plural externally accessible components each capable of sterilization by conventional autoclave methods and for use in closed circuit administration of anesthesia, wherein exhalent respiratory gases are introduced thereinto, exposed to an absorbent medium contained therein to remove carbon dioxide therefrom and released for return as inhalent gases enriched with anesthetic gases, said absorber apparatus comprising: a unitary absorber head having a pair of spaced, bottom opening, chambers arranged side by side and a horizontally arranged passageway formed in said head between said chambers communicating therebetween, a pair of canisters, each adapted to contain absorbent medium and arranged in parallel, side by side, sealed relationship with said head chambers to close off same, a pair of axial tubes extending respectively through each of said canisters isolated from said head chambers, hollow base means arranged at the lower ends of each canister sealably coupled thereto to define a base chamber for each canister, the lower ends of said axially disposed tubes respectively passing through said head chambers and having side openings communicating with a respective one of said base chambers, cap means threadably mounted to the lower ends of said axially disposed tubes, demountable exhalation valve means and inhalation valve means, adaptor means sealably secured to said absorber head respectively communicating with said head chambers and receiving, threadably, the upper ends of said axially disposed tubes, said exhalation valve means and inhalation valve means received coaxially within said adaptor means, said cap means and said adaptor means cooperating in said securement to couple sealably said head, canisters and base member ones to the others, one of said cap means being imperforate so as to close off its respective base and the other of said cap means having passage means for attaching a breather bag thereto.
Claim 16
Dependent Claim
300 words
A carbon dioxide absorber apparatus demountable to plural externally accessible components each capable of sterilization by conventional autoclave methods and for use in closed circuit administration of anesthesia, wherein exhalent respiratory gases are introduced thereinto, exposed to an absorbent medium contained therein to remove carbon dioxide therefrom and released for return as inhalent gases enriched with anesthetic gases, said absorber apparatus comprising: a unitary absorber head having a pair of spaced, bottom opening, chambers arranged side by side and a horizontally arranged passageway formed in said head between said chambers communicating therebetween, a pair of canisters, each adapted to contain absorbent medium and arranged in parallel, side by side, sealed relationship with said head chambers to close off same, a pair of axial tubes extending respectively through each of said canisters isolated from said head chambers, hollow base means arranged at the lower ends of each canister sealably coupled thereto to define a base chamber for each canister, the lower ends of said axially disposed tubes respectively passing through said head chambers and having side openings communicating with a respective one of said base chambers, cap means threadably mounted to the lower ends of said axially disposed tubes, demountable exhalation valve means and inhalation valve means, adaptor means sealably secured to said absorber head respectively communicating with said head chambers and receiving, threadably, the upper ends of said axially disposed tubes, said exhalation valve means and inhalation valve means received coaxially within said adaptor means, said cap means and said adaptor means cooperating in said securement to couple sealably said head, canisters and base member ones to the others, one of said cap means being imperforate so as to close off its respective base and the other of said cap means having passage means for attaching a breather bag thereto.
Claim 17
Dependent Claim
132 words
said axial conduits each having port means located at the lower ends thereof and below the perforate lower ends of said canisters, said port means communicating with the interior of said base members, securement of said base members to said canisters closing off the lower ends of said canisters whereby a continuous interior unidirectional path for gases is established along a path defined by the exhalation valve means through said axial conduit to said associated base member to the canister interior to the one associated absorber head chamber through said passageway to the other associated absorber head chamber and through said second canister interior to said other base member and by way of said associated axial conduit thereof to and through the inhalation valve means to the exterior of the absorber apparatus.
Claim 18
Dependent Claim
132 words
said axial conduits each having port means located at the lower ends thereof and below the perforate lower ends of said canisters, said port means communicating with the interior of said base members, securement of said base members to said canisters closing off the lower ends of said canisters whereby a continuous interior unidirectional path for gases is established along a path defined by the exhalation valve means through said axial conduit to said associated base member to the canister interior to the one associated absorber head chamber through said passageway to the other associated absorber head chamber and through said second canister interior to said other base member and by way of said associated axial conduit thereof to and through the inhalation valve means to the exterior of the absorber apparatus.
Claim 19
Dependent Claim
31 words
The absorber apparatus as claimed in claim 6 in which the cap means and adaptor means are internally threaded and the axially disposed tubes are externally threaded adjacent opposite ends thereof.
Claim 20
Dependent Claim
25 words
The absorber apparatus as claimed in claim 6 in which check valve means are provided removably coupled to said horizontal passageway in said absorber head.
Claim 21
Dependent Claim
65 words
The absorber apparatus as claimed in claim 6 in which said exhalation and inhalation valve means include a housing, an inlet conduit, a chamber defined within said housing and an outlet conduit, at least said inlet conduit being threadably coupled to said housing and valve means disposed between said inlet conduit and said chamber and arranged to control passage from the inlet to the outlet.
Claim 22
Dependent Claim
30 words
The absorber apparatus as claimed in claim 9 in which said inhalation valve means includes a coupling conduit to enable introduction of anesthetic gases from an exterior source into housing.
Claim 23
Dependent Claim
34 words
The absorber apparatus as claimed in claim 9 in which the exhalation valve means and the inhalation valve means are slidably, sealingly coupled to said head chambers, respectively, by way of said adaptor means.
Claim 24
Dependent Claim
289 words
A carbon dioxide absorber apparatus demountable to plural externally accessibly components each capable of sterilization by autoclave methods and for use in the administration of anesthesia wherein exhalent respiratory gases are introduced thereinto, exposed to an absorbent medium tHerein to remove carbon dioxide therefrom and released for return as inhalent gases; said absorber apparatus comprising: a hollow absorber head, at least a pair of vertically arranged canisters communicating with said head, hollow absorber base means closing off the lower end of said canisters first valve and conduit means for receiving exhalent gases, second valve and conduit means for discharging gases subsequent passage through said absorber apparatus, said first and second valve and conduit means coupled to said head, axial tubular passage means within at least a pair of said canisters in communication with said first and second valve and conduit means and said base means bypassing said head, and cap means engaging said axial tubular passage means and said base means, and said tubular passage means being in communication with said pair of canisters by way of said base means whereby to define a unidirectional flow along a path defined through said absorber apparatus from said first valve and conduit means through said tubular passage means and thence into said base means and through one of said pair of canisters to said head, thence again to the other of said pair of canisters to said tubular passage means by way of said base means, thereafter to said second valve and conduit means; the apparatus comprised of said first and second valve and conduit means, said absorber head, said canisters and said base means and said cap means being all demountable to establish free interior access to enable autoclave sterilization.
Claim 25
Dependent Claim
289 words
A carbon dioxide absorber apparatus demountable to plural externally accessibly components each capable of sterilization by autoclave methods and for use in the administration of anesthesia wherein exhalent respiratory gases are introduced thereinto, exposed to an absorbent medium tHerein to remove carbon dioxide therefrom and released for return as inhalent gases; said absorber apparatus comprising: a hollow absorber head, at least a pair of vertically arranged canisters communicating with said head, hollow absorber base means closing off the lower end of said canisters first valve and conduit means for receiving exhalent gases, second valve and conduit means for discharging gases subsequent passage through said absorber apparatus, said first and second valve and conduit means coupled to said head, axial tubular passage means within at least a pair of said canisters in communication with said first and second valve and conduit means and said base means bypassing said head, and cap means engaging said axial tubular passage means and said base means, and said tubular passage means being in communication with said pair of canisters by way of said base means whereby to define a unidirectional flow along a path defined through said absorber apparatus from said first valve and conduit means through said tubular passage means and thence into said base means and through one of said pair of canisters to said head, thence again to the other of said pair of canisters to said tubular passage means by way of said base means, thereafter to said second valve and conduit means; the apparatus comprised of said first and second valve and conduit means, said absorber head, said canisters and said base means and said cap means being all demountable to establish free interior access to enable autoclave sterilization.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |