US3200818A - Breathing apparatus - Google Patents

Breathing apparatus Download PDF

Info

Publication number
US3200818A
US3200818A US235566A US23556662A US3200818A US 3200818 A US3200818 A US 3200818A US 235566 A US235566 A US 235566A US 23556662 A US23556662 A US 23556662A US 3200818 A US3200818 A US 3200818A
Authority
US
United States
Prior art keywords
tube
valve
breathing
gas
point
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 - Lifetime
Application number
US235566A
Other languages
English (en)
Inventor
Johannisson Dag Olof Alfred
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.)
Svenska AB Gasaccumulator
Original Assignee
Svenska AB Gasaccumulator
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
Priority claimed from SE1143461A external-priority patent/SE219054C1/sl
Application filed by Svenska AB Gasaccumulator filed Critical Svenska AB Gasaccumulator
Application granted granted Critical
Publication of US3200818A publication Critical patent/US3200818A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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. ventilators; 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. ventilators; Tracheal tubes

Definitions

  • FIG 1 INVENTOR DAG OLOF ALFRED JOHANNlSSON BY $2 1 Q ATTORNEYS United States Patent 3,200,818 BREATHFNG APPARATUS Dag (ilof Alfred lohannisson, Lidingo, Sweden, assignol to Svens'lra Alrtiebolaget Gasaccumnlator, Lidingo, near Sweden, a corporation of Sweden Filed Nov. 5, 1962, Ser. No. 235,566 Claims priority, application Sweden Nov. 17, 1%].
  • the invention relates to a breathing apparatus which may be used for narcosis as well as for artificial respiration and is provided with a supply tube by which a breathing gas or a narcotic can be supplied and with a breathing bag serving as a reservoir of variable volume for storing breathing gas.
  • an overflow valve for preventing an increase of pressure in the system beyond a predetermined limit.
  • Such a pressure increase might be caused by a continued supply of breathing gas in larger quantities than are removed from the system, for instance by absorption in a gas purifying device.
  • the invention overcomes one or more of the disadvantages referred to. It is characterized in that the supply tube is connected to the system to the rear of the breathing bag with regard to the air flow direction and that a non-return valve is provided between the breathing bag and the connection.
  • FIG. 1 is a view showing the principle of an embodiment of the invention.
  • FIG. 2 is a view of a detail of FIG. 1.
  • FIG. 3 is a detail view of a modified apparatus.
  • the apparatus shown in FIGS. 1 and 2 comprises a valve housing 1 which is adapted to be connected to the breathing organs so as to make possible inhalation and exhalation as indicated by the arrows of the figure.
  • a valve housing 1 which is adapted to be connected to the breathing organs so as to make possible inhalation and exhalation as indicated by the arrows of the figure.
  • an exhalation tube 2 issues and has connected thereto a supply tube 3.
  • the exhalation tube is connected to a gas purifying device 4, containing a carbonic-acid absorbing agent.
  • an inhalation tube 5 is returned to the valve housing.
  • a breathing bag 6 serving as a reservoir of breathing gas.
  • a non-return valve 7 is provided in the exhalation tube before its connection to the gas purifier.
  • an overflow valve 8 is provided in the exhalation tube.
  • FIG. 2 shows a disc 9 integral with the upper end of a valve stem lid of the valve 7.
  • the valve member 8 has a central aperture provided therein for the valve .stem ill to be movable in the vertical direction and between the valve stem and the disc 9 there is inserted a spring 11 providing a bias for the non-return valve as well as for the overflow valve.
  • valve housing 1 there is provided a valve disc 12 which in its inoperative position rests on a pair of valve seats, one of which is formed by the end of the exhalation tube 2 and the other of which by the rim of the orifice of the inhalation tube 5.
  • FIG. 3 shows a detail of a modified apparatus accord ing to FIG. 1, the arrangement shown in FIG. 3 being adapted to be substituted for the portion of the exhalation tube 2 shown in FIG. 1 between the dash-dot lines III of the figure.
  • the arrangement comprises a valve 3,Z,8l8 Patented Aug. 17, 1965 ice piston 13 which is movable between an upper and a lower position.
  • the valve housing 1 In the upper position the valve housing 1 is connected via the proximate portion of the exhalation tube 2 to the surrounding atmosphere and the portion of the exhalation tube next to the supply tube 3 is blocked.
  • the connection shown in PEG. 1 is established.
  • the disc 12 is urged by the breathing pressure downwardly to the lower valve seat and the upper valve seat is disengaged, making exhalation possible through the tube 2 and the non-return valve 7 to the gas purifier 4t and on to the breathing bag 6.
  • the gas supplied from the supply tube 3 passes through the non-return valve 7 to the breathing bag 6. If no counterpressure is present under the non-return valve 7, this valve opens, owing to its larger surface, more easily than the overflow valve 8.
  • the spring 11 may be adjustable through an adjustment of the disc a
  • the disc 9 may be threaded onto the stem 10.
  • the breathing bag 6 is compressed so as to make air be supplied to the breathing organs.
  • the non-return valve is then closed and the valve disc 12 is removed from the lower valve seat in the same way as during inhalation.
  • the breathing may be arrested by the exertion of a certain pressure on the breathing bag 6.
  • the supplied gas can then always flow ofi through the overflow valve 3, owing to the fact that this valve as Well as the supply tube is placed to the rear of the non-return valve with regard to the direction of the air flow.
  • the common guiding of the non-return valve 7 and the overflow valve 8 with the common spring 11 for biasing both valves has the advantage that the non-return valve 7 in its opened position increases the spring bias on the overflow valve 8, thereby counteracting opening of the latter valve, which would otherwise be possible upon very rapid exhalation.
  • the modified embodiment according to FIG. 3 operates according to the same principle as just described. However, exhalation now takes place direct to the surrounding atmosphere.
  • the gas purifier 4 may obviously be dispensed with in this case.
  • a breathing apparatus comprising: an exhalation tube for conducting exhaled gas from a point of use, an inhalation tube for conducting gas to be inhaled to the point of use, said exhalation tube and said inhalation tube being connected to form a closed circuit leading from and returning to the point of use means in said circuit commuicating with said inhalation and exhalation tubes for permitting one-way flow only from the inhalation tube to the point of use and from the point of use to the exhalation tube, a breathing bag connected in said circuit, .a supply tube connected to said circuit for supplying breathing gas thereto at a point relatively upstream of said breathing bag, a non-return valve in said circuit between said breathing bag and said supply tube opening toward the breathing bag and an overflow valve cornmunicating with said supply tube upstream of said nonreturn valve for discharging excess gas.
  • Apparatus as set forth in claim 1 further comprising means for exerting a relatively increased closing bias on said overflow valve when said non-return valve is open and for exerting a relatively decreased bias on said overflow valve when said non-return valve is closed.
  • Apparatus as set forth in claim 2 wherein said last 3 mentioned means comprises a spring biasing said nonreturn valve and said overflow valve to the closed positions thereof.
  • Apparatus as set forth in claim 1 further comprising means in said circuit for purifying the exhaled gas.
  • Apparatus as set forth in claim 1 wherein the arrangement of said circuit in the downstream direction comprises successively said supply tube, said overflow valve, said non-return valve, and said breathing bag.
  • a breathing bag an inhalation tube connected to said breathing bag for conducting breathing gas from the breathing bag to a point of use, means connected to the inhalation tube for preventing reverse flow from the point of use to the inhalation tube, a supply tube communicating with said breathing bag for supplying breathing gas to said breathing bag.
  • a non-return valve between said breathing bag and said supply tube for permitting flow of gas only to said breathing bag from said supply tube, an overflow valve communicating with said supply tube on the side of said non-return valve removed from said breathing bag for 4 discharging excess gas, and means for exerting a relatively strong closing bias on said overflow valve in response to opening movement of said non-return valve and for exerting a relatively lighter closing bias on said overflow valve in response to closing movement of said non-return valve.

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
US235566A 1961-11-17 1962-11-05 Breathing apparatus Expired - Lifetime US3200818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1143461A SE219054C1 (enrdf_load_stackoverflow) 1961-11-17 1961-11-17

Publications (1)

Publication Number Publication Date
US3200818A true US3200818A (en) 1965-08-17

Family

ID=20293956

Family Applications (1)

Application Number Title Priority Date Filing Date
US235566A Expired - Lifetime US3200818A (en) 1961-11-17 1962-11-05 Breathing apparatus

Country Status (4)

Country Link
US (1) US3200818A (enrdf_load_stackoverflow)
FR (1) FR1339288A (enrdf_load_stackoverflow)
GB (1) GB967421A (enrdf_load_stackoverflow)
NL (1) NL285307A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366133A (en) * 1963-12-12 1968-01-30 Aga Ab Arrangement in breathing apparatus
US3375839A (en) * 1965-11-12 1968-04-02 William F. Crenshaw Breathing oxygen mask inhalation and exhalation diaphragm valve unit
US3612048A (en) * 1970-02-19 1971-10-12 Kentaro Takaoka Rebreathing apparatus for anesthesia
US4453543A (en) * 1980-09-01 1984-06-12 Testa-Laboratorium A/S Anaesthesia--breathing apparatus
US4501271A (en) * 1981-10-13 1985-02-26 John William Spear Resuscitator
US4590933A (en) * 1984-01-13 1986-05-27 Itoh Seiki Kabushiki Kaisha Static pressure automatic control device for closed circuit respirator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1567868A (en) * 1925-08-14 1925-12-29 H C Alexander Bernhard Drager Apparatus for administering anaesthetic gases
US2591120A (en) * 1948-11-11 1952-04-01 Blease John Henry Apparatus for the control of respiration resuscitation and anaesthesia
DE928505C (de) * 1950-03-03 1955-06-02 Auergesellschaft Ag Sauerstoffatemschutzgeraet mit Kreislauf der Atemluft und lungengesteuerter Sauerstoffzufuhr
US3088456A (en) * 1960-02-08 1963-05-07 Philip L Stanton Anesthetizing and gas therapy apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1567868A (en) * 1925-08-14 1925-12-29 H C Alexander Bernhard Drager Apparatus for administering anaesthetic gases
US2591120A (en) * 1948-11-11 1952-04-01 Blease John Henry Apparatus for the control of respiration resuscitation and anaesthesia
DE928505C (de) * 1950-03-03 1955-06-02 Auergesellschaft Ag Sauerstoffatemschutzgeraet mit Kreislauf der Atemluft und lungengesteuerter Sauerstoffzufuhr
US3088456A (en) * 1960-02-08 1963-05-07 Philip L Stanton Anesthetizing and gas therapy apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366133A (en) * 1963-12-12 1968-01-30 Aga Ab Arrangement in breathing apparatus
US3375839A (en) * 1965-11-12 1968-04-02 William F. Crenshaw Breathing oxygen mask inhalation and exhalation diaphragm valve unit
US3612048A (en) * 1970-02-19 1971-10-12 Kentaro Takaoka Rebreathing apparatus for anesthesia
US4453543A (en) * 1980-09-01 1984-06-12 Testa-Laboratorium A/S Anaesthesia--breathing apparatus
US4501271A (en) * 1981-10-13 1985-02-26 John William Spear Resuscitator
US4590933A (en) * 1984-01-13 1986-05-27 Itoh Seiki Kabushiki Kaisha Static pressure automatic control device for closed circuit respirator

Also Published As

Publication number Publication date
NL285307A (enrdf_load_stackoverflow)
FR1339288A (fr) 1963-10-04
GB967421A (en) 1964-08-19

Similar Documents

Publication Publication Date Title
US3319627A (en) Intermittent positive pressure breathing apparatus
GB983192A (en) Respiratory assister
GB1444607A (en) Ventilators
US2325049A (en) Breathing apparatus
GB822680A (en) Improvements in or relating to breathing apparatus for swimmers
EP0510040A1 (en) VENTILATOR.
GB1206337A (en) Respiratory device
US3200818A (en) Breathing apparatus
US3136312A (en) Mask and reservoir with disposable container supply
GB768865A (en) Self-contained breathing apparatus
ES369354A1 (es) Perfeccionamientos en la construccion de dispositivos de expiracion para mascara respiratoria.
US2871854A (en) Breathing apparatus
US2485039A (en) Diving unit
US2216183A (en) Apparatus for the administration of gases
US4010746A (en) Regulator with water fill mechanism to prevent free flow
US2099841A (en) Apparatus for the administration of gases
US3068857A (en) Apparatus for controlling or assisting respiration
US2788001A (en) Breathing apparatus of the rebreather type
GB910065A (en) Improvements in or relating to respiratory valves
FR2369963A1 (fr) Disposition d'appareil respiratoire pour plongeur
US2042474A (en) Gas administering
US4750485A (en) Portable emergency breathing apparatus
US2310022A (en) Oxygen delivering apparatus of the demand type
US4744357A (en) Portable emergency breathing apparatus
US3805779A (en) Breathing system protecting apparatus with a closed or semi-open circulation of respiration gas