GB1357334A - Lung ventilators - Google Patents
Lung ventilatorsInfo
- Publication number
- GB1357334A GB1357334A GB3539170A GB3539170A GB1357334A GB 1357334 A GB1357334 A GB 1357334A GB 3539170 A GB3539170 A GB 3539170A GB 3539170 A GB3539170 A GB 3539170A GB 1357334 A GB1357334 A GB 1357334A
- Authority
- GB
- United Kingdom
- Prior art keywords
- orifice
- reservoir
- path
- gas
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 210000004072 lung Anatomy 0.000 title abstract 3
- 239000007789 gas Substances 0.000 abstract 7
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 238000011144 upstream manufacturing Methods 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 230000003434 inspiratory effect Effects 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
1357334 Lung ventilators BRITISH OXYGEN CO Ltd 21 July 1971 [21 July 1970] 35391/70 Heading A5T A lung ventilator capable of supplying gas selectively at either a constant, increasing or decreasing flow rate comprises a flow path 8, 14, 20; a first gas reservoir 12 in the path; a first orifice 10, placed upstream of the first reservoir 12; a bypass path 6 which may be selected by a two-position valve 4, extending from upstream of the first orifice 10 to immediately downstream of the first reservoir 12; a second orifice 26 downstream of the first reservoir 12 and the bypass path 6, and having a larger cross-sectional area than the first orifice 10; a valve 16 between the bypass path 6 and the second orifice 26; and a second gas reservoir 24 adapted to have its interior placed selectively in communication with the atmosphere, via 28, or with the path 20 between the valve 16 and the second orifice 26. The second reservoir 24 is connected to the path 20 by a path 18 having a two-position valve 22. The cross-sectional area of the orifices, and the internal volume of the reservoirs, may be adjustable. Alternatively each orifice or reservoir may be replaced by a plurality of orifices or reservoirs of differing cross-sectional areas or internal volumes respectively, of which a particular orifice or reservoir may be switched selectively into its operational position. A constant inspiratory flow rate is obtained by positioning the valves so that gas passes through the bypass path 6 to the second orifice 26. A decreasing flow rate is obtained by passing gas through the first orifice 10 and first reservoir 12 to the second orifice 26, the first reservoir 12 having filled during the expiratory phase, in which the valve 16 is closed by a suitable automatic control. An increasing flow rate is obtained by passing gas through bypass path 6 to the second orifice 26, some of the gas being diverted into the second reservoir 24, which is then vented to the atmosphere in the expiratory phase, in which the valve 16 is closed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3539170A GB1357334A (en) | 1970-07-21 | 1970-07-21 | Lung ventilators |
| DE19712152376 DE2152376A1 (en) | 1970-07-21 | 1971-10-21 | METHOD FOR GENERATING A TEMPORARILY INTERRUPTED GAS FLOW AND DEVICE FOR CARRYING OUT THE METHOD |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3539170A GB1357334A (en) | 1970-07-21 | 1970-07-21 | Lung ventilators |
| DE19712152376 DE2152376A1 (en) | 1970-07-21 | 1971-10-21 | METHOD FOR GENERATING A TEMPORARILY INTERRUPTED GAS FLOW AND DEVICE FOR CARRYING OUT THE METHOD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1357334A true GB1357334A (en) | 1974-06-19 |
Family
ID=25761915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3539170A Expired GB1357334A (en) | 1970-07-21 | 1970-07-21 | Lung ventilators |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2152376A1 (en) |
| GB (1) | GB1357334A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT379952B (en) * | 1984-06-29 | 1986-03-25 | Czech Kurt | DEVICE FOR LUNG TREATMENT OF PEOPLE OR ANIMALS |
| DE3707942A1 (en) * | 1987-03-12 | 1988-09-22 | Draegerwerk Ag | GAS DOSING DEVICE, IN PARTICULAR FOR MEDICAL APPARATUS |
-
1970
- 1970-07-21 GB GB3539170A patent/GB1357334A/en not_active Expired
-
1971
- 1971-10-21 DE DE19712152376 patent/DE2152376A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2152376A1 (en) | 1973-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |