GB815870A - Improvements in and relating to lung ventilating apparatus, more especially for anaesthesia purposes - Google Patents

Improvements in and relating to lung ventilating apparatus, more especially for anaesthesia purposes

Info

Publication number
GB815870A
GB815870A GB12510/57A GB1251057A GB815870A GB 815870 A GB815870 A GB 815870A GB 12510/57 A GB12510/57 A GB 12510/57A GB 1251057 A GB1251057 A GB 1251057A GB 815870 A GB815870 A GB 815870A
Authority
GB
United Kingdom
Prior art keywords
chamber
anμsthetic
bag
pressure
gas
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
GB12510/57A
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.)
Air Shields Inc
Original Assignee
Air Shields Inc
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 Air Shields Inc filed Critical Air Shields Inc
Publication of GB815870A publication Critical patent/GB815870A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L29/00—Joints with fluid cut-off 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
    • A61M16/0003—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
    • 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
    • A61M16/0081—Bag or bellow in a bottle
    • 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
    • A61M16/0075—Bellows-type
    • 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
    • A61M16/0078—Breathing bags

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

815,870. Respiratory apparatus. AIRSHIELDS Inc. April 17, 1957 [April 27, 1956], No. 12510/57. Class 81 (2). Anµsthetic apparatus in which a variable volume device with flexible walls is connected in the breathing circuit of an anµsthetic machine, the flexible walls being exposed in a variable pressure chamber to alternating negative and positive pressures, has a relief valve for allowing anµsthetic gas to pass from the variable volume device to the chamber when the pressure in the variable volume device exceeds that in the chamber by a predetermined amount, the relief valve comprising a closure member sealed by its weight on a valve seating and subjected from above to the pressure in the chamber and from below to the pressure in the variable volume device. A breathing bag 9 of the anµsthetic apparatus is located in a transparent chamber 10 in which alternating positive and negative pressures are produced by a bellows 12 operated by driving means and tuning mechanism (not shown). The chamber 10 has relief valves 14, 15 controlling the maximum positive and negative pressures respectively, in the chamber 10. Anµsthetic gas leaving the bag 9 passes to the patient through a duct 8. Between the bag 9 and the duct 8 is an assembly comprising a cover 22 mounted on a ring 20 supported by tubes 21 connecting a small chamber 23 below the cover 22 with the chamber 10. A disc 24 normally supported by the ring 20, separates the bag 9 from the small chamber 23. Normally, gas passes around the assembly between the bag 9 and the duct 8, but in the event of anµsthetic gas pressure in the breathing bag 9 exceeding the pressure in the chamber 10 by a predetermined amount, e.g. 1 cm. of water, the disc 24 is lifted to vent anµsthetic gas from the bag 9 to the chamber 10. A second breathing bag 5 for manual or emergency use is provided, a valve 7 serving to disconnect one of the bags 5, 9 from the anµsthetic circuit. Specification 781,747 is referred to.
GB12510/57A 1956-04-27 1957-04-17 Improvements in and relating to lung ventilating apparatus, more especially for anaesthesia purposes Expired GB815870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US581202A US2847001A (en) 1956-04-27 1956-04-27 Valve device for lung ventilator

Publications (1)

Publication Number Publication Date
GB815870A true GB815870A (en) 1959-07-01

Family

ID=24324270

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12510/57A Expired GB815870A (en) 1956-04-27 1957-04-17 Improvements in and relating to lung ventilating apparatus, more especially for anaesthesia purposes

Country Status (2)

Country Link
US (1) US2847001A (en)
GB (1) GB815870A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB864044A (en) * 1958-08-21 1961-03-29 Air Shields Volume indicator for anesthesia machine system
US4883051A (en) * 1988-02-18 1989-11-28 Summa Vest, Inc. Disposable breathing system and components
US4898165A (en) * 1988-12-08 1990-02-06 Lyle Warzeka Breathing apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB649229A (en) * 1948-11-11 1951-01-24 John Henry Blease Improvements in apparatus for the control of respiration, resuscitation and anaesthesia
US2737176A (en) * 1951-03-31 1956-03-06 E & J Mfg Co Breathing machine

Also Published As

Publication number Publication date
US2847001A (en) 1958-08-12

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