US3229689A - Resuscitation apparatus - Google Patents

Resuscitation apparatus Download PDF

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Publication number
US3229689A
US3229689A US277404A US27740463A US3229689A US 3229689 A US3229689 A US 3229689A US 277404 A US277404 A US 277404A US 27740463 A US27740463 A US 27740463A US 3229689 A US3229689 A US 3229689A
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Prior art keywords
pressure
mask
oxygen
exhalation
operator
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Expired - Lifetime
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US277404A
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English (en)
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Laurence M Christman
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Individual
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Individual
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Priority to US277404A priority Critical patent/US3229689A/en
Priority to NL6404727A priority patent/NL6404727A/xx
Priority to DE19641491665D priority patent/DE1491665B1/de
Priority to CH574564A priority patent/CH412205A/fr
Priority to GB18275/64A priority patent/GB1068603A/en
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    • 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
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • 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
    • A61M16/0048—Mouth-to-mouth respiration
    • 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
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases

Definitions

  • This invention relates to a pulmonary resuscitative method and apparatus, and more particularly to a method and apparatus for delivering oxygen intrapulmonically to a person through the intermittent intrapulmonic application of a selected positive pressure which is adjustable as desired.
  • a variety of resuscitative techniques and apparatuses for delivering oxygen to a person in labored respiration or respiratory arrest are in current use.
  • the conventional a pparatuses which are employed in mouth-to-mouth, mouthto-mask, or mask-to-mask resuscitative techniques are generally inadequate in delivering oxygen to subjects in a manner to provide for an efiicient oxygen and carbondioxide exchange in the vascular system of the subject.
  • Apparatuses such as the iron lung and the oxygen tent, while presenting one hundred percent (100%) oxygen environmentally, and which provide for satisfactory therapy in certain specific cases, present environments which are delivered externally to the body rather than internally and therefore do not provide for the degree of lung ventilation which is adequate and necessary in cases of acute dyspnea or respiratory arrest.
  • These apparatuses like the standard resuscitator and other pressure breathing apparatuses in current use, are of undesirably great mass and weight. In emergency type apparatus, humidification is either lacking or inadequate.
  • One problem presented by the standard resuscitator in particular is that it is provided with a regulator which is designed to cut off delivery whenever back-pressure is sensed. This, of course, may be induced by factors other than complete tidal quantity. Also the intricate valving arrangements in these devices frequently confound inexpert practitioners and even trained hospital corpsmen. They are also prone to malfunction be cause of their complexity.
  • the apparatus and resuscitative method of this invention are devised such that adequate ventilation and displacement of nitrogen from the lungs with oxygen may be provided in cases of labored breathing or respiratory arrest with minimum danger to the subject by even an inexpert operator.
  • a gaseous mixture comprising over 94.5% oxygen and from 2.7% to 4% carbon dioxide is delivered intrapulmonically to the subject on an intermittent basis.
  • the apparatus of this invention includes a soft rubber ore-pharyngeal tube or airway which is adapted for insertion into the throat of the subject so that oxygen may be delivered directly to the trachea and lungs.
  • the apparatus comprises a conventional oxygen supply cylinder, an adjustable pressure regulator for controlling pressure from the oxygen supply, and a conventional pressure breathing mask interposed in the oxygen supply line from the regulator.
  • the mask is connected at its inlet port in communication with the outlet of the regulator and at its exhalation port to a flexible exhalation conduit, the distal end of which is equipped with the soft rubber airway.
  • the mask is placed over the face of the person practicing the method, hereinafter called the operator, who may then receive oxygen at a selected pressure by adjustment of the pressure selector dial of the regulator.
  • the operator When the operator exhales in the mask, oxygen at this selected pressure is delivered through the exhalation conduit and airway directly to the trachea and lungs of the subject.
  • the operator By pressure-loading of the exhalation valve of the mask in correspondence with the pressure output of the regulator, the operator is required to exhale with a force which is slightly in excess of the pressure of oxygen supplied by the regulator in order to open the exhalation conduit and permit oxygen flow to the subject. The operator therefore opens and closes arrest.
  • the interposition of the operator in the oxygen supply line prevents the over-pressurization of the subjects lungs.
  • the operators breath humidifies the oxygen before delivery to the subject and thereby avoids the undersirable physical etfects which generally result when humidification is lacking.
  • the operator assures delivery of oxygen intrapulmonically to the subject at a substantially uniform positive pressure on an intermittent basis and also provides for a suitable proportion of carbon dioxide within the medically acceptable range of 2.7% to 4% which is sufficiently high to serve as a respiratory stimulant for excitation of the subjects respiratory center but sufficiently low to avoid carbon dioxide toxicity and repression of breathing.
  • Control of the intermittent intrapulmonic pressure as delivered to the subject is made possible by the pressure regulator which is manually adjustable to selectively reduce or increase the outlet pressure of the regulator in accordance with the needs of the subject and his rate of recovery. Furthermore, pharyngeal blockage and tongue swallowing, whichare ever present dangers in mouth-tomouth resuscitative teachniques or techniques which involve placing a mask over the subjects face, are averted by the presence of the rubber airway in the subjects throat.
  • FIG. 1 is a view showing the arrangement of resuscitative apparatus for practicing the method of this invention
  • FIG. 2 is a schematic sectional view through the pressure breathing mask in the apparatus of this invention which is worn by an operator when practicing the meth d of this invention, and showing the pressure loading of the exhalation valve of the mask during inhalation by the operator;
  • FIG. 3 is a schematic sectional view through the pressure breathing mask of this invention, showing the disposition of the exhalation. valve of the mask during exhalation by the operator;
  • FIG. 4 is a perspective view of the mask in the apparatus of this invention with parts broken away to show the inspiratory valves and the exhalation valve in the mask and the flow paths in the mask for the oxygen from the regulator and the exhaled breath of the operator;
  • FIG. 5 is a schematic sectional view of the manuallycontrolled pressure regulator in the apparatus of this invention, showing the condition of the regulator when adjusted to provide for zero pressure at its outlet;
  • FIG. 6 is a view similar to FIGURE 5, but showing the operation of the pressure regulator when delivering a selected pressure of oxygen to its outlet.
  • the resuscitative apparatus 10 which is a preferred embodiment of the appartus of this invention, is shown in FIG. 1 as it is used in practicing the method of this invention.
  • the apapratus 10 comprises a standard oxygen supply cylinder 11 which preferably has a capacity of at least 295 cubic inches volume but which is desirably small in size to provide for easy mobility.
  • the oxygen cylinder is connected at its outlet. 12 by a conduit, such as a copper tubing 13, to the inlet 14 of a pressure breathing regulator 15, illustrated schematically in FIGURES 5 and 6.
  • the regulator outlet 16 is connected to one end of a flexible oxygen hose 17, the other end of which is connected to the inlet of a conventional pressure breathing mask 19.
  • a second oxygen hose 21 is connected to the outlet of the mask and is provided at its distal end with an airway 23 adapted for insertion into the subjects throat.
  • the airway is fabricated of soft rubber instead of conventional plastic or metal to avoid injury and laceration to the throat of the subject, and is provided with an arcuate end portion 24 designed to extend to the subjects trachea when the airway is inserted into the throat. It is also provided with an imbedded metal bitering in the wall of the airway adjacent the lip-guard 25 to prevent the subjects teeth from clamping the airway to a closed condition.
  • the airway is inserted into the throat of a person in labored respiration or respiratory arrest and the mask fitted to the face of an operator who may then receive oxygen at a selected pressure from the regulator by adjusting the pressure selector dial on the regulator to a predetermined outlet pressure.
  • the selector dial is graduated to indicate pressure in inches of water although other systems of measurement might satisfactorily be used.
  • the pressure initially selected is suitably high, ordinarily a pressure head of eight inches of H 0, although pressures as high as sixteen inches of H 0 may safely be used.
  • the operator After inhaling, waits a brief time before exhaling, such as a two to three second interval. He also waits a correspondingly brief time before inhaling so that a rate of ten breaths a minute is approximately and maintained during pressure breathing therapy until such time as the subject commences breathing on his own. In this manner a humidified mixture of oxygen and carbon dioxide is delivered to the subject at regularly spaced intervals corresponding in time of occurrence and duration to the exhalations of the operator and in a far greater amount than would be received by a person breathing 100% oxygen at normal pressure and rate of breathing.
  • a brief time before exhaling such as a two to three second interval. He also waits a correspondingly brief time before inhaling so that a rate of ten breaths a minute is approximately and maintained during pressure breathing therapy until such time as the subject commences breathing on his own.
  • a humidified mixture of oxygen and carbon dioxide is delivered to the subject at regularly spaced intervals corresponding in time of occurrence and duration to the exhalations of the operator and
  • FIGS. 2 and 3 The means by which pressure loading of the exhalation valve of the mask is achieved and the functioning of the valve during the inhalation and exhalation of the operator is illustrated schematically in FIGS. 2 and 3.
  • a face mask which may be satisfactorily used in the apparatus of this invention is of the type produced by the Mine Safety Appliances Corporation of Philadelphia, Pennsylvania, model No. Al3-A.
  • the mask is provided with an inlet channel 31 as defined by the outer rubber wall 32 of the mask and the rubber wall 33, the inner surface 34 of which forms the interior surface of the mask.
  • the inlet 35 of the mask is adapted to be connected in communication with the outlet of the pressure regulator by means of the flexible hose 17, as shOWn in FIG. 1, so that oxygen at a pressure corresponding to the outlet pressure of the regulator is delivered to the inlet channel.
  • a valve assembly comprising a valve seating member 36 at the upper end thereof is connected to an inner wall 37 of the mask which is integrally formed with the wall 33 and depends substantially perpendicularly therefrom.
  • the valve seating member which is disposed such that it would be located slightly below the mouth of the mask-wearer when the mask is worn with the wearers face disposed against the seal flap 38, as shown in FIG. 4, comprises an annular top portion 39 with an annular flange section 41 depending downwardly from the center thereof and providing a seat, by its lower annular surface, against which the valve element 42 is adapted to engage when the valve is in closed condition, as shown in FIG. 2.
  • the valve element which is in the form of a circular disc, is disposed centrally of a resilient diaphragm 43 to which it is attached in a flat position.
  • the diaphragm in turn is seated in the upper end of a nipple member 44 and clamped therein by an annular ring 45 which is laid over the peripheral margin of the diaphragm and held in position by bolts 46 which join the valve seating member and the upper end of the nipple.
  • Spacer members 47 sleeved about the shanks of the bolts 46 serve to clamp the annular ring and the diaphragm against the nipple and to space the upper end of the nipple member from the valve seating member.
  • valve element is biased upwardly to a normally closed position against the valve seat by a compressed spiral spring 48 which is seated in an enlarged bore section of the nipple and attached at its upper end to the under side of the diaphragm.
  • the outlet pressure from the regulator is deliverable to the under side of the diaphragm through the axial bore 49 of the nipple which is installed in the mask such that the lower reduced end portion 51 of the nipple extends through an aperture 52 in the wall 33 with its open end disposed in the inlet flow channel of the mask.
  • the mask is preferably provided with a suitable attaching means, such as a strap (not shown) for holding the mask in sealing position against the face and thereby freeing the hands of the operator.
  • a suitable attaching means such as a strap (not shown) for holding the mask in sealing position against the face and thereby freeing the hands of the operator.
  • the inspiratory valves are forced closed and the expired breath of the operator, comprising pure oxygen and a small proportion of carbon dioxide constituting his own body elimination, is forced through the valve opening between the valve seat and valve element into the exhaust channel 55 of the mask, as is shown in FIG. 3, whereupon the mixture is delivered to the subject via the flexible exhalation conduit 21 and the airway.
  • the pressure regulation and control of the oxygen supply from the oxygen cylinder is achieved by adjustment of the pressure regulator which is illustrated schematically in FIGS. 5 and 6.
  • a pressure regulator which has been satisfactorily used in this apparatus is one produced by the Aro Equipment Corp., of Cleveland, Ohio, model A- 14.
  • the regulator comprises a housing 61 having an inlet port 14 connected in communication with the outlet of the oxygen cylinder and an outlet port 16 connected in communication with the oxygen supply line.
  • the oxygen is adapted to flow through the housing from the inlet to the outlet when the valve in the housing is in open position, as shown in FIG. 6, and is cut off when the valve is in closed position, as shown in FIG. 5.
  • the oxygen flow and the pressure delivered to the outlet of the regulator is controlled by adjustment of a pressure selector dial 64 on the face of the regulator which is mechanically linked to the valve element 65.
  • One end of the valve element is pivotally connected to an arm 66 which, in turn, is pivotally connected at one end to the wall of the housing and at its other end to one side of a resilient diaphragm 67 which is disposed in the housing and forms one wall of the oxygen flow channel through the housing.
  • the arm 66 is pivotally attached at the center of the diaphragm.
  • the other side of diaphragm is connected to rotatable dial by a mechanical linkage comprising two pairs of bevelled gears 68, 69 and 71, 72 in cooperation with a resilient arm 73 which is attached at one end to the bevelled gear 72 and at its other end to the center of the diaphragm.
  • Rotary movement of the dial is transmitted through the first pair of gears to the second pair of gears by means of a shaft 74 which is rotatably journalled in the wall of the housing. Rotation of the dial therefore causes movement of the bevelled gears such that the arm 73 is swung to the right, as shown in FIG. 6, to cause the diaphragm to also move to the right.
  • a rich oxygen mixture may be delivered at a selected positive pressure to the lungs of a person in labored respiration or respiratory arrest, the particular pressure selected being of a level sufficient to insure assimilation of oxygen into the vascular system of the person in a desired amount. Since the need for additional oxygen 7 proportional to the amount of air inspired is great in casesof acute dyspnea, to increase the oxy-hemoglobin of the blood a high setting is therefore desirable to expedite oxygen absorption when thereby is first commenced.
  • the pressure setting may be correspondingly decreased and when the subject is able to breathe on his own the operator may remove the airway from the subjects throat and place his own mask over the face of the subject to permit him to breathe 100% oxygen direct from the pressure regulator of the oxygen supply on a demand basis without pressure.
  • a zero setting for the selector dial would be required in this instance so the negative pressure induced in the flow channel through the regulator during inhalation would move the regulator diaphragm so as to open the regulator valve and admit oxygen only during the subjects inhalation.
  • the operator may hold the subjects nose closed with one hand so as to insure a closed system.
  • the elastic lungs of the subject will automatically retract and force his own exhalation so that his expired breath will pass out around the rubber airway.
  • the operator should release the subjects nose to assist the exhalation.
  • an airway with a non-return flap valve such as is disclosed in US. Patent No. 3,017,880, might be used to facilitate the subjects exhalation.
  • cardiac stimulation might be applied during these periods by the closed chest cardiac massage method, which is, of course, far less hazardous than the open-thorax method of cardiac stimulation.
  • a new and improved intermittent positive pressure breathing apparatus which utilizes a conventional pressure breathing mask installed in the oxygen supply line to the subject in a manner so that oxygen is received in the mask from a pressure-controllable source of oxygen.
  • the mask is provided with means for pressure loading the exhalation valve of the mask to closed position by a preselected pressure from the source of oxygen so that when the mask is worn by an operator practicing the method of this invention the oxygen is delivered inter-' mittently to the subject in correspondence with the exhalations of the operator, and at a pressure corresponding to the preselected pressure, but is in excess thereof by a pressure difference of approximately 1 to 1 /2 inches Of H20.
  • an intermittent pressure breathing resuscitative apparatus is disclosed herein which possesses versatility and simplicity of operation. Because of its light weight and mobility it is also particularly desirable for use in limited confined areas.
  • a new and improved pulmonary resuscitation method which utilizes the step of intermittently flowing a mixture of oxygen and carbon dioxide at a pressure greater than a preselectedrvalue through an airway which is inserted into the throat of the subject so that the pressure is delivered intrapulmonically.
  • the air flow is delivered during time intervals corresponding to the durations of the exhalations of an operator practicing the resuscitative method, and the pressure of the mixture delivered to the subject is determined by the force of the operators exhalations which is always slightly greater than the preselected pressure.
  • the moist expired breath of the operator, mixed with a supply of oxygen provides for humidification of the mixture and supplies the proportion of carbon dioxide necessary for therapy.
  • a face-fitting pressure breathing mask adapted to be fitted to a persons face in airtight sealing relationship therewith, said mask having an inlet and inlet valve means whereby a gaseous medium may be flowed through said inlet into the interior of said mask when fitted to a persons face and said mask having an outlet channel with exhalation valve means installed in said outlet channel for controlling exhalation therethrough, said exhalation valve means being adaptedto open only in response to a force of exhalation which exceeds the pressure of gaseous medium flowing into the mask;
  • adjustable pressure regulator means selectively controlling the pressure of oxygen which is deliverable from said supply of oxygen
  • an oro-pharyngeal tube on the distal end of said conduit, said tube having an arcuate shaped free end portion whereby said tube is adapted to be inserted into the throat of a person in respiratory distress;
  • said exhalation valve of the mask means pressure loading said exhalation valve of the mask to a normally closed position in correspondence with the selected pressure of oxygen delivered to the mask whereby when the mask is worn in operative position by an operator administering aid to a person in respiratory distress, said exhalation valve is adapted to open and remain open during intervals when the force of exhalation by the operator exceeds the pressure loading on the exhalation valve to thereby deliver the exhalations of the operator intrapulmonically to the person in respiratory distress.
  • adjustable, regulator means adapted to be connected to a source of oxygen under pressure for selectively adjusting and controlling the pressure of oxygen obtainable from said source;
  • a face-fitting pressure breathing mask adapted to be fitted to a persons face in airtight sealing relationship therewith, said mask having an inlet whereby a gaseous medium may be flowed through said inlet into the interior of said mask when fitted to a persons face and said mask having an outlet with outlet valve means installed therein for controlling 9 10 exhalation therethrough, said outlet valve means to stimulate the respiratory center of a person in adapted to open in response to a force of exhalation respiratory distress.
  • 12s 29 condmt means connecte to t e out et 0 t e mas 3,013,554 12/1961 Safar et al- 128 29 and having an end portion adapted to be inserted into the throat of a person in respiratory distress 306O927 10/1962 Gattone 128 29 whereby the exhalations of a person wearing the FOREIGN PATENTS mask are communicated directly to the lungs of a 15 person in respiratory distress whenever said exhala- 5331297 2/1941 Great m tions are produced with a force which exceeds said 9011357 7/1962 Great Bntampreselected pressure to thereby deliver intrapulmonically to said person in distress a humidified gaseous RICHARD GAUDET Pnmary Exammer' mixture consisting essentially of pure oxygen and a 0 C. F. ROSENBAUM, Assistant Examiner. proportion of carbon dioxide in an amount sufficient

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  • 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)
  • Percussion Or Vibration Massage (AREA)
US277404A 1963-05-01 1963-05-01 Resuscitation apparatus Expired - Lifetime US3229689A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US277404A US3229689A (en) 1963-05-01 1963-05-01 Resuscitation apparatus
NL6404727A NL6404727A (de) 1963-05-01 1964-04-29
DE19641491665D DE1491665B1 (de) 1963-05-01 1964-04-30 Vorrichtung zur kuenstlichen Beatmung von in Atemnot befindlichen Patienten
CH574564A CH412205A (fr) 1963-05-01 1964-05-01 Appareil de réanimation pulmonaire
GB18275/64A GB1068603A (en) 1963-05-01 1964-05-01 Resuscitation apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US277404A US3229689A (en) 1963-05-01 1963-05-01 Resuscitation apparatus

Publications (1)

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US3229689A true US3229689A (en) 1966-01-18

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Application Number Title Priority Date Filing Date
US277404A Expired - Lifetime US3229689A (en) 1963-05-01 1963-05-01 Resuscitation apparatus

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US (1) US3229689A (de)
CH (1) CH412205A (de)
DE (1) DE1491665B1 (de)
GB (1) GB1068603A (de)
NL (1) NL6404727A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4998530A (en) * 1988-06-01 1991-03-12 Donmichael T Anthony Resuscitation aid
US5095898A (en) * 1988-06-01 1992-03-17 Brunswick Bio-Medical Corporation Resuscitation aid
US5398674A (en) * 1993-05-17 1995-03-21 Martin; Mark S. Resuscitation aid
EP1935446A1 (de) 2006-12-20 2008-06-25 Weinmann Geräte für Medizin GmbH & Co. KG Vorrichtung und Verfahren zur Abgabe von Sauerstoff im Rahmen einer Reanimation
US20210154425A1 (en) * 2018-08-09 2021-05-27 Armin BIDARIAN MONIRI Device for speech therapy, administration of inhalation medication and for treatment of otitis, sinusitis and barotrauma

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB533297A (en) * 1939-08-08 1941-02-11 Robert Henry Davis Improvements relating to apparatus for use in artificial respiration
US2453475A (en) * 1945-09-14 1948-11-09 Cornelius A Tobias Resuscitation apparatus
US2473518A (en) * 1946-12-16 1949-06-21 Howard F Garrard Pressure breathing mask for aviation
US2615463A (en) * 1945-11-14 1952-10-28 Henry L Burns Fluid pressure apparatus and valve means therefor
US2887104A (en) * 1958-03-12 1959-05-19 Sovinsky Eugene Mask to mask resuscitator
US2887105A (en) * 1958-03-12 1959-05-19 Elwyn S Brown Mask to mask resuscitator
US3013554A (en) * 1958-08-08 1961-12-19 Johnson & Johnson Airway
GB901357A (en) * 1960-04-29 1962-07-18 Siebe Gorman & Co Ltd Improvements in or relating to a device for administering mouth-to-mouth artificial respiration
US3060927A (en) * 1959-12-29 1962-10-30 Birch And Gattone Inc Means for administering oxygen during resuscitation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB533297A (en) * 1939-08-08 1941-02-11 Robert Henry Davis Improvements relating to apparatus for use in artificial respiration
US2453475A (en) * 1945-09-14 1948-11-09 Cornelius A Tobias Resuscitation apparatus
US2615463A (en) * 1945-11-14 1952-10-28 Henry L Burns Fluid pressure apparatus and valve means therefor
US2473518A (en) * 1946-12-16 1949-06-21 Howard F Garrard Pressure breathing mask for aviation
US2887104A (en) * 1958-03-12 1959-05-19 Sovinsky Eugene Mask to mask resuscitator
US2887105A (en) * 1958-03-12 1959-05-19 Elwyn S Brown Mask to mask resuscitator
US3013554A (en) * 1958-08-08 1961-12-19 Johnson & Johnson Airway
US3060927A (en) * 1959-12-29 1962-10-30 Birch And Gattone Inc Means for administering oxygen during resuscitation
GB901357A (en) * 1960-04-29 1962-07-18 Siebe Gorman & Co Ltd Improvements in or relating to a device for administering mouth-to-mouth artificial respiration

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4998530A (en) * 1988-06-01 1991-03-12 Donmichael T Anthony Resuscitation aid
US5095898A (en) * 1988-06-01 1992-03-17 Brunswick Bio-Medical Corporation Resuscitation aid
US5398674A (en) * 1993-05-17 1995-03-21 Martin; Mark S. Resuscitation aid
EP1935446A1 (de) 2006-12-20 2008-06-25 Weinmann Geräte für Medizin GmbH & Co. KG Vorrichtung und Verfahren zur Abgabe von Sauerstoff im Rahmen einer Reanimation
US20210154425A1 (en) * 2018-08-09 2021-05-27 Armin BIDARIAN MONIRI Device for speech therapy, administration of inhalation medication and for treatment of otitis, sinusitis and barotrauma
US11957840B2 (en) * 2018-08-09 2024-04-16 Armin BIDARIAN MONIRI Device for speech therapy, administration of inhalation medication and for treatment of otitis, sinusitis and barotrauma

Also Published As

Publication number Publication date
DE1491665B1 (de) 1970-08-20
NL6404727A (de) 1964-11-02
CH412205A (fr) 1966-04-30
GB1068603A (en) 1967-05-10

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