GB1357334A - Lung ventilators - Google Patents

Lung ventilators

Info

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
Application number
GB3539170A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB3539170A priority Critical patent/GB1357334A/en
Priority to DE19712152376 priority patent/DE2152376A1/en
Publication of GB1357334A publication Critical patent/GB1357334A/en
Expired legal-status Critical Current

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

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.
GB3539170A 1970-07-21 1970-07-21 Lung ventilators Expired GB1357334A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE2152376A1 (en) 1973-04-26

Similar Documents

Publication Publication Date Title
GB1034759A (en) Valve for artificial respiration apparatus
GB1477313A (en) Valves
GB1427433A (en) Valves for anesthesia rebreathing apparatus
GB1247960A (en) Improvements in or relating to breathing assistors
GB1062772A (en) A respiratory apparatus
SE8005853L (en) PRESSURE AND FLOW CONTROL VALVE
GB1511233A (en) Gas valve mechanisms
GB1357635A (en) Pneumatic pressure type respirator
GB1357334A (en) Lung ventilators
US3522816A (en) Fluid system for filling and emptying an enclosure
GB1429932A (en) Gas flow regulating devices
GB1518356A (en) Breathing apparatus
NL6516005A (en)
US3441041A (en) Air injector for breathing apparatus
GB1189240A (en) Improvements in or relating to Automatic Ventilators
GB1104640A (en) Breathing apparatus for supplying a pair of gases in adjustable proportion
JPS5322921A (en) Exhaust recirculation controlling apparatus
GB1451878A (en) Lung ventilator
US3762408A (en) Ventilators
US3699990A (en) Fluid mixer
US1488442A (en) Artificial-breathing apparatus
GB724801A (en) Improvements in or relating to protective oxygen respirators providing circulation of the respiration air
GB1096030A (en) Improvements in or relating to respiratory apparatus
GB799635A (en) Improvements in closed circuit breathing apparatus
GB1358324A (en) Fluid flow control apparatus

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee