GB1175714A - Respiratory Apparatus - Google Patents

Respiratory Apparatus

Info

Publication number
GB1175714A
GB1175714A GB33979/67A GB3397967A GB1175714A GB 1175714 A GB1175714 A GB 1175714A GB 33979/67 A GB33979/67 A GB 33979/67A GB 3397967 A GB3397967 A GB 3397967A GB 1175714 A GB1175714 A GB 1175714A
Authority
GB
United Kingdom
Prior art keywords
chamber
pressure
valve
gas
control device
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
GB33979/67A
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Publication of GB1175714A publication Critical patent/GB1175714A/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
    • 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

Abstract

1,175,714. Respiratory apparatus. O. H. DRAGER [trading as DRAGERWERK, HEINR & BERNH. DRAGER]. 24 July, 1967 [22 July, 1966], No. 33979/67. Heading A5T. Respiratory apparatus of the kind including a breathing bag 4 in a closed chamber 5 in which positive and negative pressures are alternately produced, for inducing inhalation and exhalation respectively, of the patient, comprises an adjustable control device 7 including a valve 8 which shuts off the flow of gas from the chamber 5 when the negative pressure therein reaches a predetermined value which is adjusted by adjustment of the control device. The breathing bag is connected to a respiratory circuit 2 which includes a carbon dioxide absorber 2c inhalation and exhalation valves 2a, 2b and an anaesthetic supply conduit 1. When a changeover valve 17 actuated by a diaphragm 14 in response to pressure in a chamber 13 of the control device closes a vent 10a, gas is supplied by an injector 10 to the chamber 5 for the inhalation phase via a conduit 6 and the valve 8 comprising a cup 21 and an adjustably spring loaded diaphragm 18 which is exposed on one side to atmosphere and on the other to the pressure in the chamber 5. Simultaneously pressure builds up in the chamber 13. At a predetermined positive pressure in the chambers 5, 13, the valve 17 opens the vent 10a so that gas from the injector 10 passes to atmosphere and entrains gas from the chambers 5, 13 for the exhalation phase. At a pressure in the chamber 5 determined by the spring-loading of the diaphragm 18, the valve 8 closes shutting off the chamber 5 from the control device so that there is no further drop in pressure in the chamber 5. Further pressure reduction in the chamber 13 operates the valve 17 to close the vent 10a so that gas is again supplied to the chamber 5 for the next inhalation phase.
GB33979/67A 1966-07-22 1967-07-24 Respiratory Apparatus Expired GB1175714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0050655 1966-07-22

Publications (1)

Publication Number Publication Date
GB1175714A true GB1175714A (en) 1969-12-23

Family

ID=7052816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33979/67A Expired GB1175714A (en) 1966-07-22 1967-07-24 Respiratory Apparatus

Country Status (4)

Country Link
US (1) US3527555A (en)
DE (1) DE1491691B1 (en)
GB (1) GB1175714A (en)
SE (1) SE315981B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5490499A (en) * 1992-02-21 1996-02-13 Instrumentarium Corp. Regulation of a propellant gas flow

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757776A (en) * 1971-06-01 1973-09-11 J Baumann Ventilator for an anesthesia gas machine
SE388127B (en) * 1975-04-30 1976-09-27 Cameco Ab RESPIRATORY SYSTEM
US4045835A (en) * 1976-08-30 1977-09-06 Under Sea Industries, Inc. Power deflator mechanism for scuba buoyancy vests
SE8700977D0 (en) * 1987-03-09 1987-03-09 Olof Werner UNIT WHICH SEPARATELY SEPARATES THE GAS CONTENT IN THE DRIVE CIRCUIT AND THE RECEIVER CIRCUIT BUT ONLY ALLOWS GAS PIPE IN THE BAD DIRECTIONS (OPEN SEPARATION)
FR2914192B1 (en) * 2007-04-02 2010-03-26 Georges Boussignac RESPIRATORY PROBE.
CN103301543B (en) * 2013-06-17 2015-12-09 广州医科大学附属第一医院 A kind of Oxygen drive to inhale also forms the device of Extrinsic positive end expiratory pressure mutually

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH310986A (en) * 1952-03-07 1955-11-15 Heinrich Dr Draeger Otto Device for artificial respiration.
US2766753A (en) * 1954-04-15 1956-10-16 Dragerwerk Fa Apparatus for artificial respiration, in particular for purposes of anesthesia
US3396725A (en) * 1964-01-17 1968-08-13 Drager Otto H Respirator with negative pressure limiting valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5490499A (en) * 1992-02-21 1996-02-13 Instrumentarium Corp. Regulation of a propellant gas flow

Also Published As

Publication number Publication date
US3527555A (en) 1970-09-08
SE315981B (en) 1969-10-13
DE1491691B1 (en) 1969-12-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees