GB626193A - Improvements in anaesthetic apparatus - Google Patents

Improvements in anaesthetic apparatus

Info

Publication number
GB626193A
GB626193A GB21609/47A GB2160947A GB626193A GB 626193 A GB626193 A GB 626193A GB 21609/47 A GB21609/47 A GB 21609/47A GB 2160947 A GB2160947 A GB 2160947A GB 626193 A GB626193 A GB 626193A
Authority
GB
United Kingdom
Prior art keywords
gas
jet
diaphragm
tube
leading
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
GB21609/47A
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.)
FREDERICK BENJAMIN TALLEY
Original Assignee
FREDERICK BENJAMIN TALLEY
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 FREDERICK BENJAMIN TALLEY filed Critical FREDERICK BENJAMIN TALLEY
Priority to GB21609/47A priority Critical patent/GB626193A/en
Publication of GB626193A publication Critical patent/GB626193A/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
    • A61M16/104—Preparation of respiratory gases or vapours specially adapted for anaesthetics
    • 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
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path

Abstract

626,193. Anaesthetic apparatus. TALLEY, H. A. E., and TALLEY F. B. Aug. 7, 1947, Nos. 21609 and 28230. [Class 81(ii)] Anaesthetic apparatus for the mixing of gas and air which comprises a gas jet 3, a venturi-like tube 4, a conduit 2 leading to a face mask, an air inlet 14 leading to the tube 4, a valve 9 controlling a gas supply to the jet and a flexible diaphragm 13 influenced by the patient's respiration and adapted to open the gas control valve by means of a simple lever 11 during inhalation only, is characterized in that the lowered pressure caused by the passage of the gas through the jet and venturi-like tube is transmitted directly to the diaphragm in such a manner as to tend to retain the gas control valve open and thereby assist the patient's respiration. In operation, inhalation is transmitted through perforations in a double-walled tube 15 to the interior of a chamber 12, actuating the diaphragm 13 and lever 11 which opens the gas control valve against spring pressure. Flow of gas through the jet 3 produces a lowered pressure in the passage between the jet and the tube 4 and tends to retain the diaphragm in the operated position. In a modification (not shown) the air inlet valve 14 is replaced by a diaphragm-actuated valve spring- biased to a closed position and operated by the pressure of the gas in the passage leading to the jet 3.
GB21609/47A 1947-08-07 1947-08-07 Improvements in anaesthetic apparatus Expired GB626193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB21609/47A GB626193A (en) 1947-08-07 1947-08-07 Improvements in anaesthetic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21609/47A GB626193A (en) 1947-08-07 1947-08-07 Improvements in anaesthetic apparatus

Publications (1)

Publication Number Publication Date
GB626193A true GB626193A (en) 1949-07-11

Family

ID=10165800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21609/47A Expired GB626193A (en) 1947-08-07 1947-08-07 Improvements in anaesthetic apparatus

Country Status (1)

Country Link
GB (1) GB626193A (en)

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