GB1429330A - Breathing aid apparatus - Google Patents
Breathing aid apparatusInfo
- Publication number
- GB1429330A GB1429330A GB1115473A GB1115473A GB1429330A GB 1429330 A GB1429330 A GB 1429330A GB 1115473 A GB1115473 A GB 1115473A GB 1115473 A GB1115473 A GB 1115473A GB 1429330 A GB1429330 A GB 1429330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- gas
- bore
- nozzle
- 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
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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration air
- A61M16/162—Water-reservoir filling system, e.g. automatic
- A61M16/164—Water-reservoir filling system, e.g. automatic including a liquid inlet valve system
-
- 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. mouth-to-mouth respiration; Tracheal tubes
-
- 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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M16/0009—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
- A61M16/0012—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration by Venturi means
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)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
1429330 Valves J-M LAFOURCADE 7 March 1973 [10 March 1972 6 Nov 1972 2 March 1973] 11154/73 Heading F2V [Also in Division A5] Breathing aid apparatus.-Breathing aid apparatus comprises a housing 15 with a hollow end piece 11 for connection to a gas supply 49, an annular valve seat 46 surrounding an end of the end piece bore 12 within the housing 15, a valve member 19 urged by a spring 20 towards a seated position, a first chamber 14 which is charged with gas when the valve member 19 is unseated, an outlet 30 from the first chamber 14 to an outlet 32 of the housing to a patient, a variable volume chamber 17, and a gas duct 21, 22, 27 connecting the first chamber 14 with the variable volume chamber 51 through a throttle, which may be a porous plastics pellet 23 compressed by a screw. The housing outlet includes means for supplying additional gas, comprising a nozzle 39, a rotary valve 41, and a non-return valve 42. The valve member 19 may be a piston. Operation.-Initially, the pressure is atmospheric on both sides of the piston 19. When a gas is admitted to the bore 12 the gas pressure in it compresses the spring 20 and opens the valve so that the gas passes through the passage 30 to the outlet. The gas also seeps slowly through the pellet 23 until the pressure in the chamber 17 rises sufficiently to close the valve and cut off the supply to the patient. Gas pressure in the chamber 14 flows back from chamber 17 to the chamber 14 to relieve pressure in the chamber 14 and restore initial conditions. The cycle then repeats itself. By appropriately choosing the area of the face 47, the force of the spring 20, the porosity of the pellet 23 and the pressure of the gas, the opening and closing times of the valve may be made equal. Exhaled gases escape through the non-return valve 42. Alternative embodiments.-The piston 19 may be replaced by a membrane (55), Fig. 2 (not shown). The nozzle 32 may include a piston (61), Fig. 3 (not shown), biased by a spring (59) and including a bore (62) for connecting the inlet with the outlet. Apertures (57) in the wall of the nozzle 32 lead to the atmosphere. During inhalation, the gas pressure in the passage 14 forces the piston (61) to a position where it occludes the apertures (57). Should the gas supply fail, natural breathing occurs through the apertures (57). In another embodiment, a collar (20), Fig. 5 (not shown), is screwed to a nozzle (111) and encloses therewith, 0-rings (127, 128), Fig. 6 (not shown), which form a valve controlling a bore (130) which extends in a Venturi nozzle (140) and ends in a nozzle (143) at its flared outlet. When the collar (120) is screwed into the nozzle (111), the 0-rings (127, 128) occlude the bore (130) and the device operates as does the device of Fig. 3. When the nozzle (120) is unscrewed, operation is as before during inhalation but during exhalation the 0-rings are spaced apart and gas flow through the bore (130) and the nozzle (143) sets up a depression in a chamber (139) and favours exhalation. Humidifiers.-The gas may be humidified by aliquidina container (163), Fig. 8 (not shown), below the device, connected to it by a hose (161), the liquid being atomized by the gas. Alternatively, a dripping bottle (166), above the device may supply the liquid through a metering valve (167). Control devices.-Devices for controlling the breathing frequency and gas flow rate may be incorporated in the apparatus. The flow rate control device (240), Fig. 10 (not shown), is rotatable using a knob (242), and locks, in one or several positions, by means of a ball-andsocket detent (248-250). In each of these positions, a chamber (217) is connected to a chamber (228) by means of a bore (245) in the device (240) which has several such bores of differing diameter so that the flow rate is different for each said position. The frequency control device (260) is a similar device which has a porous pellet (265), Fig. 14 (not shown), inside a bore (264) which connects a chamber (218) with a chamber (224). Several such bores (264) are provided, each containing a pellet (265) compressed to a different degree by screws (266) so that each bore (264) corresponds to a different breathing frequency. Alternatively, the frequency and flow rates may be continuously altered by means of screws (284), Fig. 15 (not shown), and (283) respectively, which caps a porous pellet in the respective flow passage.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7208488A FR2174782B1 (en) | 1972-03-10 | 1972-03-10 | |
FR7239191A FR2205344B2 (en) | 1972-11-06 | 1972-11-06 | |
FR7307559A FR2219794B2 (en) | 1973-03-02 | 1973-03-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1429330A true GB1429330A (en) | 1976-03-24 |
Family
ID=27249805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1115473A Expired GB1429330A (en) | 1972-03-10 | 1973-03-07 | Breathing aid apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1429330A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1421903A1 (en) * | 2002-11-20 | 2004-05-26 | Maquet Critical Care AB | Arrangement for passive gas sampling |
CN106236097A (en) * | 2016-09-07 | 2016-12-21 | 赛客(厦门)医疗器械有限公司 | A kind of intelligent terminal with respiration detection and training function |
CN107929831A (en) * | 2017-12-29 | 2018-04-20 | 上海德尔格医疗器械有限公司 | A kind of negative pressure generator, absorbing devices and resuscitator |
-
1973
- 1973-03-07 GB GB1115473A patent/GB1429330A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1421903A1 (en) * | 2002-11-20 | 2004-05-26 | Maquet Critical Care AB | Arrangement for passive gas sampling |
CN106236097A (en) * | 2016-09-07 | 2016-12-21 | 赛客(厦门)医疗器械有限公司 | A kind of intelligent terminal with respiration detection and training function |
CN107929831A (en) * | 2017-12-29 | 2018-04-20 | 上海德尔格医疗器械有限公司 | A kind of negative pressure generator, absorbing devices and resuscitator |
CN107929831B (en) * | 2017-12-29 | 2023-12-22 | 上海德尔格医疗器械有限公司 | Negative pressure generator, suction filtration device and resuscitator |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |