US3013554A - Airway - Google Patents

Airway Download PDF

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Publication number
US3013554A
US3013554A US754046A US75404658A US3013554A US 3013554 A US3013554 A US 3013554A US 754046 A US754046 A US 754046A US 75404658 A US75404658 A US 75404658A US 3013554 A US3013554 A US 3013554A
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United States
Prior art keywords
airway
patients
mouth
mask
extension
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Expired - Lifetime
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US754046A
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English (en)
Inventor
Safar Peter
Martin C Mcmahon
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Johnson and Johnson
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Johnson and Johnson
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Publication date
Application filed by Johnson and Johnson filed Critical Johnson and Johnson
Priority to US754046A priority Critical patent/US3013554A/en
Priority to GB27156/59A priority patent/GB900305A/en
Priority to CH7675959A priority patent/CH371224A/de
Application granted granted Critical
Publication of US3013554A publication Critical patent/US3013554A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0488—Mouthpieces; Means for guiding, securing or introducing the 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. ventilators; 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. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0402—Special features for tracheal tubes not otherwise provided for
    • A61M16/0431—Special features for tracheal tubes not otherwise provided for with a cross-sectional shape other than circular
    • 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
    • A61M16/04—Tracheal tubes
    • A61M16/0488—Mouthpieces; Means for guiding, securing or introducing the tubes
    • A61M16/049—Mouthpieces
    • A61M16/0493—Mouthpieces with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block
    • 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
    • A61M16/04—Tracheal tubes
    • A61M16/0488—Mouthpieces; Means for guiding, securing or introducing the tubes
    • A61M16/049—Mouthpieces
    • A61M16/0495—Mouthpieces with tongue depressors

Definitions

  • the present invention relates to resuscitation and more particularly to a device for blowing air into a patients lungs.
  • mouth-to-mouth resuscitation whereby air is blOWn into a patients lungs has been known for many years
  • mouth-tomouth methods are substantially more eificient than any of the manual methods which depend upon physical compression of the chest wall.
  • backpressure arm-lift and chest-pressure arm-lift methods that have in recent years been taught as Standard firstaid treatment for patients requiring artificial respiration.
  • the average tidal volumes moved by the back-pressure arm-lift method as generally taught and applied in the field is only about 126 ml. of air.
  • the tidal volumes moved is between 1000 ml. and 2000 ml.
  • the tidal volumes moved was smaller than the estimated dead air space.
  • the mouth-to-mouth method in all 15 victims studied the tidal volumes of air moved was between 1008 ml. and 2000 ml.
  • the airway comprises a tube having one end adapted to enter a patients mouth and hold the tongue forward while the other end extends from the patients mouth into a position such that the user can readily blow through the tube while facing the chest of the patient and holding the patients nostrils closed, neck extended, and lower jaw upward.
  • the portion of the tube passing into the patients mouth is curved and extends to the base of the patients tongue.
  • a flange is provided at the proper distance from the end to limit the extent to which the tube is inserted.
  • a mask which fits over the patients mouth which may, if desired, be an integral part of the flange.
  • the tube is preferably flattened on the inner side of the curve so as to lie flat on the patients tongue, helping to hold the tongue forward so that it will not block the air passageway.
  • the airway is made with a double curve, giving it a somewhat S-shaped appearance.
  • FIG. 1 is a perspective view of an airway made in accordance with the present invention
  • HO. 2 is a detailed view of the mouth mask and per tion of the airway tube to which it is attached.
  • FIG. 3 is a side view of the airway with a portion broken away;
  • FIG. 4 is a front view of the airway with a portion broken away;
  • FIG. 5 shows the insertion of the airway into the
  • FIG. 6 shows the airway in use
  • FIG. 7 is a top-plan view taken along line 7-7 of FIG. 6.
  • the airway illustrated comprises a tube ll. having a somewhat flattened or elliptical cross section.
  • the tube has two oppositely curved ends 12 and 13 separated by a straight section 14.
  • the inner side of the curved ends 13 and 14 is relatively flat so as to lie along the tongue of a patient.
  • the intermediate straight portion 14 of the tube is provided with a flange i5 and a raised ridge to, which serve to hold in place a mouth mask 17. Since the mouth mask is recessed as at 24 to receive the flange t5, the mouth mask can be conside'red as an extension of the flange 15, which would be the case if the whole were molded as a single piece.
  • the larger curved end 12, which is essentially the are of a circle having a radius of about 1 /2 inches, is adapted to be inserted into the mouth of an adult patient.
  • the distance between the flange 15 and the end of the tube is such that the end of the tube, when inserted, is at the base of the patients tongue.
  • the distance between the flange 15 and the tip of end 12. is therefore approximately the average linear distancebetween the outside of the lips of an average adult and the base of his tongue.
  • the distance between the tip 18 of the tube'and the flange 15 is 4 inches, which is'a safe length for use with the average adult patient.
  • the airway illustrated is primarily for use with adults.
  • the end 13 is therefore the end into which the rescuer will usually be blowing.
  • the end 13, however, must also be designed to be inserted into the mouths of children fortheir resuscitation. By curving this end backwards only a slight amount as shown and making this end substantially shorter, the end serves this dual purpose in a very eliicient manner.
  • the smaller end 13 of the tube has a slight curvature which is approximately that of an arc of a circle having a radius of about 1% inches.
  • the end 19 of the tube is spaced about 2% inches from the flange 15. This length is found to be suitable for use with children ranging in age from about 3 to puberty.
  • the flange 15, which coincides with the base of oral mask 17 on the straight portion of the tube, serves to limit the distance the tube is inserted into a patients mouth when the airway is in use. it is therefore important that the distance between the end of the tube and the flange is not too great. Since the mouth mask 17 is in essence a continuation of the flange 15 once the mouth mask has been attached to the tube, this is the same as saying that the distance between the base of the mouth mask and the tip of the tube should not be too great.
  • the air passage through the tube should be sufliciently large to offer little or no resistance to the blowing of the rescuer. It has been found that with a flattened tube of the type illustrated a ready flow of air can be obtained with an air passage having a width of about 18 to 20 mm. and a height of about 6 to 7 mm.
  • the over-all length is about 6 /3 inches and the length of the straight intermediate section about 1% inches.
  • the flange is, as illustrated, positioned about midway of the straight section 14.
  • the walls of the tube are substantially thicker in the straight section 14 on either side of the flange 15. This serves to make the tube more rigid in this intermediate section and serves to prevent the patient from closing the tube by biting on the tube when in use.
  • This strengthening may also be provided, if desired, by a metal insert rather than by thickening the Walls of the tube.
  • the tube is made of metal, such for example as stainless steel, this reinforcing is not necessary.
  • metal tubes or tubes made of other materials having substantially the same rigidity as metal are generally not preferred except where they will he used by anesthetists or other similarly skilled persons because of possible injury to the patient during insertion.
  • the adult or larger end 12 is provided near its tip 18 with an opening 20 and 21 on each side and a third opening 22 on the back Wall. These openings prevent stoppage of the tube during use by providing extra openings which are available when the terminal opening may be blocked, thus making it substantially easier for the rescuer to blow air into the patients lungs or to allow for unobstructed spontaneous breathing. Because of the greater ease with which air can be blown into a childs lungs by a rescuer, it is not necessary to provide similar openings at the end 13 of the tube. Also, end 13 is the end blown into in rescuing an adult patient, where in some instances the rescuer has to blow quite hard. Openings at this end would make blowing into the tube in such instances substantially more difficult.
  • the oral mask 17 is formed of a flexible gas impermeable material and is curved so as to fit around a patients mouth and seal off any air that might otherwise escape when blowing into the patients lungs.
  • the mask is elliptical in shape and besides being cupped so as to slope downwardly toward the edges from the center, it has a generally arcuate shape, curving down toward the ends.
  • the mask as shown, has a central opening 23 through which the tube 11 passes. Around the opening 23 is a recessed portion 24 into which the flange 15 is adapted to fit.
  • the width of the mask around the edge of the opening 23 is such that the edge of the opening 23 fits snugly between the flange 15 and the ridge 16 provided on the tube 11 so that when the mask is inserted on the tube it will snap into place and remain there until [5. removed, the face mask 17 when attached being essentially an extension of flange 15.
  • a mask found to be particularly suitable is one in which the major axis of its elliptical periphery is about 3% inches and its minor axis about 1% inches. The mask, however, is not limited to these specific dimensions.
  • the mask may be made of any relatively impervious, flexible material, such as polyethylene, rubber, tetrafluoroethylene resins, etc. Where the material is sufliciently flexible, the mask can be inverted.
  • the oral mask can be cupped toward the end 13 by simply grasping the edges and pushing in on the center. This is particularly desirable where the mask is firmly secured to the airway and cannot be removed.
  • the mask has been shown as a separately molded item that is placed on the tube 11, it may be an integral part of the flange 15, i.e., the flange itself may be extended out to form the oral mask. It is generally preferred to form the mask of a material such that it can be inverted as above described and make the ridge '16 sufficiently tight that once the mask has been placed on the tube 11 it will remain there. However, if desired, the ridge may be sufliciently small to permit removal and reversal of the mask or removal of the mask when the airway is not in use so that it will more readily fit into the pocket or some other relatively small space.
  • the tube may be made of any material that is sufliciently rigid to permit insertion into a patient's mouth and is not brittle or toxic. As previously stated, it is generally preferred not to make the tube of a completely rigid material unless it is to be only used by an expert. However, there are numerous plastics and elastomers that have suiiicient rigidity and at the same time are sufficiently flexible. As an example of the Wide range of materials that may be employed, airways made of stainless stecl, hard rubber and polyethylene have all been used repeatedly and successfully in giving artificial respiration.
  • both ends are so designed that either end may be inserted into the mouth of a patient.
  • the larger end 12 is designed for insertion into the mouth of an adult patient while the smaller end 13 is designed for insertion into the mouth of a child patient (age 3 to puberty).
  • the end not inserted into the patients mouth is directed back toward the top of the patients head so as to place the rescuer in the most ideal position for carrying out the artificial respiration. In this way, a single instrument may be used either with adults or children, making it unnecessary to carry a separate resuscitator for each.
  • the airway is of such design that only two airways are needed to cover the complete range from baby to adult, one airway being adapted to use with a child (age 3 to puberty) or an adult and the other airway being adapted to use with a child (age 1 to puberty) or a baby.
  • the distance from the end of the tube to the flange I5 is preferably -105 mm. for a child (age 3 to puberty) 65-75 mm. and for a baby 4050 mm.
  • the curved mouth mask 17 may be omitted since the mouth can be adequately sealed by the thumbs or a flat flexible flange.
  • the rescuer places the patient supine, forces the patients mouth open with one hand and removes foreign material from the pharynx with the other hand. He then inserts the airway over the tongue, as illustrated in FIG. 5, being careful not to push the tongue back but to hold it forward. After insertion, the base of the mouth mask 17 of the airway must be at the level of the patients lips.
  • the airway is adapted for adults and children, as in the airway illustrated, the long end 12 is inserted into the patients month if the patient is an adult. If the patient is a child, the short end 13 is inserted.
  • the procedure is as follows: From the patients vertex, looking downward at his chest, the rescuer extends the patients head and raises the jaw. With the thenar eminences of both hands he occludes the nose and prevents leakage through the corners of the mouth with the thumbs, as pictured in FIGS. 6 and 7, by pressing the mask 17 down over the mouth.
  • the rescuer may improvise the prevention of air leakage as he likes, as long as the patients head remains in extension. For instance, the tips of the rescuers thumb may pinch the patients nose, while the second and third fingers press the mask over the lips and the fourth and fifth fingers pull on the horizontal rami of the mandible to hold the head extended.
  • one hand may be used to pinch the patients nose, while the palm of the other hand pushes the chin upward and the fingers press the oral mask or flange over the lips.
  • the blowing into the artificial airway must be more forceful if there is air ieakage.
  • the force of blowing necessary to adequately ventilate the patients alveoli can be determined by observation of the patients chest at all times. If the patients chest does not move in spite of proper snifling position, the rescuer shall withdraw the airway/slightly, or insert it deeper as the airway may not quite fit each patients pharynx.
  • the airway may be turned around and the longer part used as a mouthpiece for the rescuer.
  • the irflations must be gentle in children.
  • the rescuer blows immediately into the mouthpiece-forcefully into adults, gently into children, and only with puffs from his cheeks into newborn infants. While blowing he must watch the patients chest constantly. When he sees the patients chest rise, he removes his mouth from the mouthpiece and permits the patient to exhale passively by the elastic recoil of the lungs and the chest wall. In emergency resuscitation, the immediate ventilation of the lungs is most important in order to prevent cardiac arrest and irreversible damage to the central nervous system. The first 10 to 20 breaths, therefore, must be deep and at a rapid rate. Later a rate between 12 to 20 per minute is satisfactory.
  • the higher inflation pressures necessary to overcome the partial obstruction may force air into the stomach. If the stomach becomes d-istended, gentle manual pressure over the patients epigastrium between breaths can expel the air.
  • Shallow spontaneous respirations can be assisted satisfactorily by the mouth-to-airway method: immediately following the patients initiation of each inspiration, the rescuer blows forcefully and briefly into the mouthpiece.
  • Extension of the head and forward displacement of the mandible are essential for patency of the natural air passageway in the unconscious patient (without a tube). It is relatively diflicult, without substantial training, to obtain proper forward dislocation of the mandible. In most instances, the use of a mouth- -month airway of the type described makes forward dislocation of the mandible unnecessary. These airways are therefore partici 6 ularly helpful where the rescuer is a layman with a minimum of training.
  • An airway to be used by a rescuer for blowing air into a patients lungs while the patient is lying prone on his back comprising a tubular member having a substantially straight intermediate section, a flange adapted to remain outside of said patients mouth surrounding said intermediate section, a first extension from said intermediate section said first extension having a substantial curvature as compared to said intermediate section and terminating a distance of preferably about 65 to millimeters from said flange whereby when said first extension is inserted into the mouth of a patient and said flange engages his lips said first extension will extend inwardly and downwardly toward the base of the patients tongue to hold said tongue in a depressed position, and a second extension from said intermediate section, said second extension having a substantial curvature as compared to said intermediate section, the direction of curvature of said second extension being in a direction opposite to that of said first extension and the end of said second extension terminating at a distance from the base of said flange that is less than the distance from the base of said flange to the end of
  • An airway of claim 4 in which said openings comprise an opening on each side of said first curved extension and an opening extending through the convex curved surface thereof.
  • An airway to be used by a rescuer for blowing air into a patients lungs while the patient is lying prone on his back comprising a flexible tubular member having a relatively straight intermediate section, an ellipticallyshaped flexible flange surrounding said intermediate section adapted to fit outside of and over the mouth of a persons of much smaller physical patient to completely cover the same, a first extension from said intermediate section, said first extension having a substantial curvature as compared to said intermediate section and terminating at distance of preferably about 65 to 105 millimeters from the base of said flange where by when said first extension is inserted into the mouth of a patient and said flange engages his lips said first extension will extend downward toward the base of the patients tongue to hold said tongue in a depressed position, and a second extension from said intermediate section, said second extension having a substantial curvature as compared to said intermediate section, the direction of curvature of said second extension being in a direction opposite to that of said first extension and the end of said second extension terminating at a considerably less distance from said
  • An airway to be used by a rescuer for blowing air into a patients lungs while the patient is lying prone on his back comprising a flexible, tubular member having a relatively straight intermediate section, a flexible reversible mouth mask having an elliptically-shaped cross section and being cupped with its sides sloping downwardly towards its edges from its center, the sides along its major elliptical axis extending down further than its sides along its minor elliptical axis to give the peripheral rim of said mask a bowed shape in the direction of the major elliptical axis, a first extension from said intermediate section curved to a substantial angle from the axis of said intermediate section and terminating at distance of preferably about 65 to 105 millimeters from the base of said mask when secured to said intermediate section whereby when said first extension is inserted into the mouth of a patient and said flange engages his lips said first extension will extend downward toward the base of the patients tongue to hold said tongue in a depressed position, and a
  • An airway to be used by a rescuer for blowing air into a patients lungs while the patient is lying prone on his back comprising a flattened, flexible, tubular member having a relatively straight, reinforced intermediate section, a pair of spaced ridges extending around said intermediate section about midway thereof, an ellipticallyshaped, cupped mouth mask rcmovably positioned on said intermediate section between said spaced ridges, the outer edge of said mask curving downwardly along its major axis toward its ends and said mask having a centrally disposed opening through which said tube is inserted when said cupped flange is placed thereon, said ridges having an outer diameter larger than the diameter of said opening for maintaining said mask on said intermediate section when the edge of the mask at said opening is placed between said ridges, and at least one of said ridges being sufiiciently low to permit the edge of said mask at said opening to be passed over said lower ridge when placing said mask on said intermediate section, the space between said ridges being substantially the same as the thickness of the
  • An airway to be used by a rescuer for blowing air into a patients lungs through his month while the patient is lying prone on his back comprising a tubular member having a relatively straight intermediate section, a flange adapted to remain outside of said patients mouth, surrounding said intermediate section, a first extension from said intermediate section curved so as to lie in an arc to which said straight section would form a cord if continued and terminating a distance of preferably about 65 to 105 millimeters from said flange whereby when said first extension is inserted into the mouth of a patient and said flange engages his lips said first extension will extend inwardly and downwardly toward the base of the patients tongue to hold said tongue in a forward and depressed position, and a second extension from said intermediate section curved so as to lie in an arc to which said straight section would form a cord if continued and in a direction opposite to the direction of curvature of said first extension, the said second extension terminating at a distance from said flange that is less than the distance from the base of

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Emergency Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Otolaryngology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Percussion Or Vibration Massage (AREA)
US754046A 1958-08-08 1958-08-08 Airway Expired - Lifetime US3013554A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US754046A US3013554A (en) 1958-08-08 1958-08-08 Airway
GB27156/59A GB900305A (en) 1958-08-08 1959-08-07 Improvements in or relating to resuscitation devices
CH7675959A CH371224A (de) 1958-08-08 1959-08-08 Luftzufuhrrohr zur künstlichen Beatmung eines Patienten

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Application Number Priority Date Filing Date Title
US754046A US3013554A (en) 1958-08-08 1958-08-08 Airway

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US3013554A true US3013554A (en) 1961-12-19

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US754046A Expired - Lifetime US3013554A (en) 1958-08-08 1958-08-08 Airway

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CH (1) CH371224A (de)
GB (1) GB900305A (de)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057347A (en) * 1959-12-03 1962-10-09 Prescription Drug Co Inc Rescue breathing device
US3060927A (en) * 1959-12-29 1962-10-30 Birch And Gattone Inc Means for administering oxygen during resuscitation
US3079916A (en) * 1960-12-23 1963-03-05 Herman A Marsden Resuscitator-aspirator
US3137293A (en) * 1961-04-18 1964-06-16 Matthias E Green Shield for mouth-to-mouth resuscitation
US3229689A (en) * 1963-05-01 1966-01-18 Laurence M Christman Resuscitation apparatus
US3363629A (en) * 1963-08-17 1968-01-16 Willy Rusch Fa Endotracheal catheter
US3407810A (en) * 1965-11-12 1968-10-29 Lester L. Waldrep Biblical tube
US3568680A (en) * 1968-10-04 1971-03-09 Victor H Raimo Oropharyngeal airway
US4222378A (en) * 1978-10-24 1980-09-16 Mahoney Dennis C Mouthpiece accessory and seal
US4270531A (en) * 1978-12-11 1981-06-02 Blachly Paul H Oropharyngeal airway and bite block assembly and method of use for closed pulmonary ventilation
US4360017A (en) * 1981-03-18 1982-11-23 Harry Barlett Mouthpiece for resuscitation
EP0299481A1 (de) * 1987-07-17 1989-01-18 Hajo Dr. Reissmann Atemspendehilfsgerät
US4819627A (en) * 1988-02-08 1989-04-11 Connors Donald J Cardiopulmonary resuscitation device
US4881540A (en) * 1988-02-05 1989-11-21 Vigilia Larry P Device and method for assisting in artificial respiration
US20030089371A1 (en) * 1998-08-13 2003-05-15 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
USD479876S1 (en) 2001-10-12 2003-09-23 Fisher & Paykel Healthcare Limited Mouthpiece
US6679257B1 (en) * 1998-08-13 2004-01-20 Fisher & Paykel Limited Breathing assistance apparatus
USD504947S1 (en) 2003-09-08 2005-05-10 Fisher & Paykel Healthcare Limited Mouthpiece
US20050217678A1 (en) * 2004-04-01 2005-10-06 Mccormick James J Respiratory mask having intraoral mouthpiece with large sealing area and multiple sealing configuration
USD849233S1 (en) * 2018-02-12 2019-05-21 Wedge Therapeutics, Llc Oral airway device
USD871571S1 (en) * 2013-01-11 2019-12-31 Somnics, Inc. Oral device for negative pressure device for treating sleep disorder
USD884150S1 (en) * 2019-04-09 2020-05-12 Nicole Thomas Oral airway device
USD885558S1 (en) 2018-11-27 2020-05-26 Wedge Therapeutics Llc Oral airway device
WO2020243783A1 (en) * 2019-06-07 2020-12-10 Paul Scott Oropharyngeal device for maintaining an airway
US12214131B2 (en) 2018-11-27 2025-02-04 Wedge Therapeutics, Llc Lower jaw and tongue thrusting, endotracheal tube and flexible fiberoptic endoscope intubation oral airway device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203049A (en) * 1987-03-31 1988-10-12 John Gerald Lyons Artifical respiration instrument
GB2204498B (en) * 1987-05-06 1991-04-17 Polyplas Ltd Device for use in mouth-to-mouth resuscitation
DE3817253A1 (de) * 1987-11-03 1989-05-18 Mahrt U Hoerning Gmbh Beatmungs-tubus fuer die notfallbeatmung

Citations (8)

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US1270565A (en) * 1914-10-17 1918-06-25 Teter Mfg Company Pharyngeal inhaler.
US1786350A (en) * 1925-09-12 1930-12-23 David N Lambert Resuscitator
US1848234A (en) * 1928-08-10 1932-03-08 Robert B Swope Resuscitation apparatus
US2127215A (en) * 1937-03-27 1938-08-16 James T Gwathmey Expansible respiratory airway
US2280050A (en) * 1942-02-12 1942-04-21 Foregger Company Inc Resuscitator
US2537674A (en) * 1949-12-08 1951-01-09 John R Johnson Obstetrical device
US2669988A (en) * 1951-05-08 1954-02-23 Victor H Carpenter Teeth protector
US2882893A (en) * 1957-05-23 1959-04-21 Nicholas A C Godfroy Combination mouth piece and air-way

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1270565A (en) * 1914-10-17 1918-06-25 Teter Mfg Company Pharyngeal inhaler.
US1786350A (en) * 1925-09-12 1930-12-23 David N Lambert Resuscitator
US1848234A (en) * 1928-08-10 1932-03-08 Robert B Swope Resuscitation apparatus
US2127215A (en) * 1937-03-27 1938-08-16 James T Gwathmey Expansible respiratory airway
US2280050A (en) * 1942-02-12 1942-04-21 Foregger Company Inc Resuscitator
US2537674A (en) * 1949-12-08 1951-01-09 John R Johnson Obstetrical device
US2669988A (en) * 1951-05-08 1954-02-23 Victor H Carpenter Teeth protector
US2882893A (en) * 1957-05-23 1959-04-21 Nicholas A C Godfroy Combination mouth piece and air-way

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057347A (en) * 1959-12-03 1962-10-09 Prescription Drug Co Inc Rescue breathing device
US3060927A (en) * 1959-12-29 1962-10-30 Birch And Gattone Inc Means for administering oxygen during resuscitation
US3079916A (en) * 1960-12-23 1963-03-05 Herman A Marsden Resuscitator-aspirator
US3137293A (en) * 1961-04-18 1964-06-16 Matthias E Green Shield for mouth-to-mouth resuscitation
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CH371224A (de) 1963-08-15
GB900305A (en) 1962-07-04

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