GB682519A - Improvements in anaesthetic or analgesic inhalers - Google Patents

Improvements in anaesthetic or analgesic inhalers

Info

Publication number
GB682519A
GB682519A GB2935449A GB2935449A GB682519A GB 682519 A GB682519 A GB 682519A GB 2935449 A GB2935449 A GB 2935449A GB 2935449 A GB2935449 A GB 2935449A GB 682519 A GB682519 A GB 682519A
Authority
GB
United Kingdom
Prior art keywords
intake
mixing chamber
chamber
apertures
vapour
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
GB2935449A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2935449A priority Critical patent/GB682519A/en
Priority to FR1034637D priority patent/FR1034637A/en
Priority to DEM7549A priority patent/DE854417C/en
Publication of GB682519A publication Critical patent/GB682519A/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
    • 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
    • A61M16/18—Vaporising devices for anaesthetic preparations

Abstract

682,519. Anµsthetic apparatus. MACINTOSH, R. R., and EPSTEIN, H. G. Nov. 3, 1950 [Nov. 16, 1949], No. 29354/49. Class 81 (ii). An inhaler of the type in which evaporation of an anaesthetic or analgesic liquid is brought about as the patient inhales, comprises a mixing chamber having an intake, consisting of one or more inlets from a vaporising chamber, which has a flow resistance larger than an intake from the outside, which also consists of one or more inlets, the flow resistance rate characteristics of the intakes being such as to reduce or exclude fluctuations in the composition of the mixture due to changes in respiratory volume and/or rate. The vaporising chamber comprises a waterjacketed container 1 in the bottom of which is an inverted cup-shaped member 3 also containing water, the liquid to be vaporised being contained in an annular space 5 between the container walls and the cup-shaped member 3. Part of the inner surface of the container 1 is covered with capillary active material 6 and an overflow pipe 8 is provided. Air entering the vaporising chamber carries vapour through apertures 11 into the mixing chamber 12. A baffle in the form of a depending skirt 9 and having perforations 16 is provided. Air enters the mixing chamber 12 directly through an intake 13 and another intake 14, the latter being provided with a manually operated valve 15 which provides for two predetermined concentrations of vapour in the inhaled air. The mixing chamber 12 is provided with an inhaler tube 23. The apertures 11 forming the vapour intake to the mixing chamber 12 are in the form of cylinders 17 having small holes 18. Alternative forms of aperture 11 are described. A thermometer 19 dips into the liquid to be vaporised. A masking device 20 operated by a rotatable knob 21 controls the combination of apertures 11 to be closed in accordance with prevailing temperatures. In a modification (not shown), the cup-shaped member in the bottom of the vaporising chamber is extended upwards into the depending skirt.
GB2935449A 1949-11-16 1949-11-16 Improvements in anaesthetic or analgesic inhalers Expired GB682519A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2935449A GB682519A (en) 1949-11-16 1949-11-16 Improvements in anaesthetic or analgesic inhalers
FR1034637D FR1034637A (en) 1949-11-16 1950-11-15 Improvements to anesthetic or analgesic inhalers
DEM7549A DE854417C (en) 1949-11-16 1950-11-17 Inhalation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2935449A GB682519A (en) 1949-11-16 1949-11-16 Improvements in anaesthetic or analgesic inhalers

Publications (1)

Publication Number Publication Date
GB682519A true GB682519A (en) 1952-11-12

Family

ID=10290193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2935449A Expired GB682519A (en) 1949-11-16 1949-11-16 Improvements in anaesthetic or analgesic inhalers

Country Status (3)

Country Link
DE (1) DE854417C (en)
FR (1) FR1034637A (en)
GB (1) GB682519A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483866A (en) * 1964-09-15 1969-12-16 Robert Reynolds Macintosh Anaesthetic administering apparatus with simultaneously variable inlet,outlet and bypass passages
US3756577A (en) * 1966-12-17 1973-09-04 H Breiling Vaporizer ventilating line
GB2251189A (en) * 1990-12-18 1992-07-01 Instrumentarium Corp Fluid vaporizing apparatus
GB2407043A (en) * 2003-03-06 2005-04-20 Intersurgical Ltd Adjustable venturi device for mixing gases for inhalation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1271901B (en) * 1965-11-22 1968-07-04 Draegerwerk Ag Vaporizer for liquid anesthetics

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483866A (en) * 1964-09-15 1969-12-16 Robert Reynolds Macintosh Anaesthetic administering apparatus with simultaneously variable inlet,outlet and bypass passages
US3756577A (en) * 1966-12-17 1973-09-04 H Breiling Vaporizer ventilating line
GB2251189A (en) * 1990-12-18 1992-07-01 Instrumentarium Corp Fluid vaporizing apparatus
US5337738A (en) * 1990-12-18 1994-08-16 Instrumentarium Corporation Fluid vaporizing apparatus
GB2251189B (en) * 1990-12-18 1994-11-02 Instrumentarium Corp Fluid vaporizing apparatus
GB2407043A (en) * 2003-03-06 2005-04-20 Intersurgical Ltd Adjustable venturi device for mixing gases for inhalation
GB2407043B (en) * 2003-03-06 2006-04-12 Intersurgical Ltd An adjustable venturi device

Also Published As

Publication number Publication date
FR1034637A (en) 1953-07-28
DE854417C (en) 1952-11-04

Similar Documents

Publication Publication Date Title
ATE33448T1 (en) STEAM INHALER.
ES484752A1 (en) Suction-operated nebulizer
GB682069A (en) Improvements in and relating to controlling the supply of vapours of volatile liquids
GB682519A (en) Improvements in anaesthetic or analgesic inhalers
GB675524A (en) Improvements in apparatus for delivering mists or aerosols for breathing purposes
GB646680A (en) Apparatus for mixing the vapour of a volatile anaesthetic with air
US2437526A (en) Means for humidifying oxygen
GB628709A (en) An appliance for the production and administration of gas-vapour mixtures
GB733473A (en) Improvements relating to breathing apparatus
GB191306078A (en) Improvements in Appliances for the Nasal Inhalation of Vaporized Liquid.
GB636854A (en) Apparatus for administering anaesthetics
GB526678A (en) Improvements in or relating to inhalers and chemical vaporizers
GB1143548A (en) Improvements in or relating to apparatus for administering anaesthetics
US1459158A (en) Apparatus for generating respirable air from liquemed gases
US2428277A (en) Humidifier for oxygen gas
GB648191A (en) Improvements in or relating to anaesthetic apparatus
US5379760A (en) Position insensitive low resistance aspirator
US2121196A (en) Anesthetizing apparatus
GB726140A (en) Inhaler
GB718287A (en) Improved device for the evaporation of liquid inhaling substances
US2266704A (en) Nebulizing inhalator for medication
GB898649A (en) Improvements in and relating to the application of finely divided material
SU144260A1 (en) Portable Inhalation Anesthesia
GB758657A (en) Improvements in volatile anaesthetic vapourising apparatus
GB645645A (en) Improvements in or relating to nasal inhalers