Patent US5226539A successfully refreshed from Google Patents.
Patent US3714944A successfully refreshed from Google Patents.
US3714944A
Expired / Lapsed
US
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Mixing and humidification apparatus for breathing devices
Assignee: Bethlehem Steel Corp
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Filing: 1970-11-25
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Granted: 1973-02-06
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Expires: 1990-11-25
Abstract
Abstract A breathing device having an elongated flexible inlet conduit is provided with removable apparatus for enriching ambient air with predetermined percentages of oxygen and for humidifying the mixture before the mixture is admitted to the device. The apparatus comprises a hollow cylindrical body with a mixing chamber and an oxygen injector extending coaxially into the chamber. An exhaust port is provided in one end of the body to open into the device-conduit, and a series of intake ports surround the injector at the other end of the body to coact with the injector for causing ambient air to mix with oxygen for inhalation by the patient. A removable hollow shell surrounds the body and registers with the intake ports, and the shell has means providing a connection to a source of water vapor for humidifying the oxygen-air mixture in the mixing chamber. In addition, a method is disclosed for weaning a patient away from oxygen dependency, the method comprising the steps of periodically replacing the mixing-body with like bodies having progressively lower percentages of oxygen in the mixture after predetermined time intervals.
Inventors
- 👤 J Price
- 👤 K Shook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:50
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/16; A61M16/04; A61M16/0465; A61M16/12; A61M16/122; A61M16/125; A61M16/127; A61M16/0488; A61M16/0497; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87595
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
219 words
Mixing apparatus for use with a breathing device having means providing an inlet for admitting an oxygen enriched mixture to the device, said apparatus comprising: a hollow body defining a mixing chamber, means forming intake ports in said body exposed to ambient air and opening into said chamber adjacent one end of said body and means forming an exhaust port in said body at the other end of said body, a hollow injector having a tubular portion projecting into said mixing chamber at said one end of the body terminating at its inner end in an orifice, said injector having a portion projecting away from said body for releasable attachment to a source of oxygen, conduit means connected to said exhaust port and telescopically mating with said inlet means of the device for releasable attachment thereto, and chamber means surrounding said body to provide a substantially closed humidification chamber around said body and in open communication with said intake ports, said chamber means affording flow of ambient air into said body through said ports in a predetermined amount upon a preselected flow of oxygen through said orifice, said humidification chamber means having an inlet connected to a source of water vapor whereby water vapor is mixed with the diluted mixture of ambient air and oxygen in the mixing chamber.
Claim 2
Dependent Claim
219 words
Mixing apparatus for use with a breathing device having means providing an inlet for admitting an oxygen enriched mixture to the device, said apparatus comprising: a hollow body defining a mixing chamber, means forming intake ports in said body exposed to ambient air and opening into said chamber adjacent one end of said body and means forming an exhaust port in said body at the other end of said body, a hollow injector having a tubular portion projecting into said mixing chamber at said one end of the body terminating at its inner end in an orifice, said injector having a portion projecting away from said body for releasable attachment to a source of oxygen, conduit means connected to said exhaust port and telescopically mating with said inlet means of the device for releasable attachment thereto, and chamber means surrounding said body to provide a substantially closed humidification chamber around said body and in open communication with said intake ports, said chamber means affording flow of ambient air into said body through said ports in a predetermined amount upon a preselected flow of oxygen through said orifice, said humidification chamber means having an inlet connected to a source of water vapor whereby water vapor is mixed with the diluted mixture of ambient air and oxygen in the mixing chamber.
Claim 3
Dependent Claim
219 words
Mixing apparatus for use with a breathing device having means providing an inlet for admitting an oxygen enriched mixture to the device, said apparatus comprising: a hollow body defining a mixing chamber, means forming intake ports in said body exposed to ambient air and opening into said chamber adjacent one end of said body and means forming an exhaust port in said body at the other end of said body, a hollow injector having a tubular portion projecting into said mixing chamber at said one end of the body terminating at its inner end in an orifice, said injector having a portion projecting away from said body for releasable attachment to a source of oxygen, conduit means connected to said exhaust port and telescopically mating with said inlet means of the device for releasable attachment thereto, and chamber means surrounding said body to provide a substantially closed humidification chamber around said body and in open communication with said intake ports, said chamber means affording flow of ambient air into said body through said ports in a predetermined amount upon a preselected flow of oxygen through said orifice, said humidification chamber means having an inlet connected to a source of water vapor whereby water vapor is mixed with the diluted mixture of ambient air and oxygen in the mixing chamber.
Claim 4
Dependent Claim
219 words
Mixing apparatus for use with a breathing device having means providing an inlet for admitting an oxygen enriched mixture to the device, said apparatus comprising: a hollow body defining a mixing chamber, means forming intake ports in said body exposed to ambient air and opening into said chamber adjacent one end of said body and means forming an exhaust port in said body at the other end of said body, a hollow injector having a tubular portion projecting into said mixing chamber at said one end of the body terminating at its inner end in an orifice, said injector having a portion projecting away from said body for releasable attachment to a source of oxygen, conduit means connected to said exhaust port and telescopically mating with said inlet means of the device for releasable attachment thereto, and chamber means surrounding said body to provide a substantially closed humidification chamber around said body and in open communication with said intake ports, said chamber means affording flow of ambient air into said body through said ports in a predetermined amount upon a preselected flow of oxygen through said orifice, said humidification chamber means having an inlet connected to a source of water vapor whereby water vapor is mixed with the diluted mixture of ambient air and oxygen in the mixing chamber.
Claim 5
Dependent Claim
88 words
Apparatus according to claim 1 wherein said humidification chamber means includes a shell having aligned apertures for slidably and snugly receiving said body said shell and body cooperating to provide an annular chamber in which said water vapor assumes the temperature of the hollow body prior to mixing with the oxygen and including shoulder means on said body for engaging said shell to position one of the walls of said shell to overlie said intake ports and effect said open communication with the intake ports in the body.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |