GB1087849A - Respirator, narcosis apparatus or the like having a delayed release safety valve - Google Patents

Respirator, narcosis apparatus or the like having a delayed release safety valve

Info

Publication number
GB1087849A
GB1087849A GB3433/65A GB343365A GB1087849A GB 1087849 A GB1087849 A GB 1087849A GB 3433/65 A GB3433/65 A GB 3433/65A GB 343365 A GB343365 A GB 343365A GB 1087849 A GB1087849 A GB 1087849A
Authority
GB
United Kingdom
Prior art keywords
conduit
safety valve
slide
valve
shaft
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
GB3433/65A
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
Publication of GB1087849A publication Critical patent/GB1087849A/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
    • A61M16/0057—Pumps therefor
    • A61M16/0063—Compressors
    • 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
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • 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
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0866—Passive resistors therefor

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Emergency Medicine (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Safety Valves (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

1,087,849. Respiratory apparatus. C. G. D. ENGSTROM. Jan. 26, 1965 [Feb. 6, 1964], No. 3433/65. Heading A5T. Respiratory apparatus supplied with gas under pressure includes at least one safety valve, the or one safety valve being responsive to excess pressure and having a delayed opening mechanism. Gas entering the apparatus through flowmeters 11 is rhythmically compressed by a compressor 10 and flows to an attachment 15 for connection to the patients' lungs through a non-return valve 13, a liquid trap 18 forming a safety valve being located in the supply conduit 12. A safety valve 20 with delayed release is located in the exhalation conduit 16 or the supply conduits 12, 14 and comprises a slide 30 slidable in a sleeve 31 attached to the conduit, a branch 33 of the conduit opening into the sleeve and being normally closed by the slide. The slide is connected by a rod 28 to a piston 21 movable against a spring 35 in a cylinder 21 by pressure in a conduit 24. Conduit 24 is connected with the conduit 16 through a non-return valve 27 and a restriction 25 in parallel. In the event of an overpressure in the conduit 16, the piston moves the slide until the branch conduit 33 registers with a vent passage 32 in the slide, the delay in opening of the valve being determined by the initial distance between the branch conduit outlet and the registering portion of the vent passage. In alternative constructions (Figures 3 and 5, not shown), the piston is replaced by a diaphragm (71) responsive to an overpressure in the conduit to move a shaft (72) towards 'the stem (96) of a safety valve (92). The shaft opens the safety valve after a time delay dependent on the degree of overpressure and the initial distance between the shaft and the safety valve stem. The shaft attached to the diaphragm may form a displaceable contact (162, Figure 6) which makes the circuit of a solenoid (155) to open the safety valve (153), the distance travelled by the shaft before making the circuit determining the time delay of the valve. Alternatively, the safety valve comprises a piston (178, Figure 7) which is moved against a spring (179) in a cylinder (170) directly by the overpressure in the conduit to uncover vent openings (180) in the cylinder.
GB3433/65A 1964-02-06 1965-01-26 Respirator, narcosis apparatus or the like having a delayed release safety valve Expired GB1087849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE147464 1964-02-06

Publications (1)

Publication Number Publication Date
GB1087849A true GB1087849A (en) 1967-10-18

Family

ID=20258240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3433/65A Expired GB1087849A (en) 1964-02-06 1965-01-26 Respirator, narcosis apparatus or the like having a delayed release safety valve

Country Status (3)

Country Link
DE (1) DE1491698C3 (en)
FR (1) FR1427283A (en)
GB (1) GB1087849A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814091A (en) * 1972-01-17 1974-06-04 M Henkin Anesthesia rebreathing apparatus
FR2203647B1 (en) * 1972-10-24 1975-12-12 Minerve Sa
DE2715003C3 (en) * 1977-04-04 1981-03-26 Drägerwerk AG, 23558 Lübeck Pressure relief valve for use in ventilators
DE102009060839A1 (en) * 2009-09-24 2011-03-31 Tauchtechnik Schmitt Gmbh Regenerative apparatus for plunger, comprises counter lung-connection for counter lung, where another counter-lung connection is provided for another counter lung

Also Published As

Publication number Publication date
DE1491698A1 (en) 1969-05-29
DE1491698B2 (en) 1973-10-25
DE1491698C3 (en) 1974-05-22
FR1427283A (en) 1966-02-04

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