US3242921A - Breatching control valve - Google Patents

Breatching control valve Download PDF

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Publication number
US3242921A
US3242921A US746996A US74699658A US3242921A US 3242921 A US3242921 A US 3242921A US 746996 A US746996 A US 746996A US 74699658 A US74699658 A US 74699658A US 3242921 A US3242921 A US 3242921A
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US
United States
Prior art keywords
valve
passageway
valve member
passageways
chamber
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
US746996A
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English (en)
Inventor
Henry W Seeler
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Individual
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Individual
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Publication date
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Priority to US746996A priority Critical patent/US3242921A/en
Priority to FR1204285D priority patent/FR1204285A/fr
Priority to GB34719/58A priority patent/GB875790A/en
Priority to SE487459A priority patent/SE192516C1/sv
Priority to DES63777A priority patent/DE1282230B/de
Priority to CH7540659A priority patent/CH372932A/de
Priority to LU37971A priority patent/LU37971A1/xx
Application granted granted Critical
Publication of US3242921A publication Critical patent/US3242921A/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
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • 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
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • 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
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/206—Capsule valves, e.g. mushroom, membrane valves
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S137/00—Fluid handling
    • Y10S137/908—Respirator control

Definitions

  • This invention relates generally to a valve and particularly to a valve for controlling the flow of air.
  • the rescuers hands are not free to keep the victims chin up and insure free air passage through his throat.
  • One of the oldest known methods of artificial respiration is blowing air directly into the mouth of a person who has stopped breathing.
  • FIGURE 1 shows a breathing control valve of the invention as used in a mouth-to-mouth respiration apparatus
  • FIGURE 2 shows the breathing control valve of FIG- URE l in the alternate operating position
  • FIGURE 3 shows an alternate modification of the breathing control valve of the invention
  • FIGURE 4 shows the control valve of FIGURE 3 in the alternate operating position.
  • the breathing control valve 1 of the invention is provided with an egress passage way 2 and an inlet passageway 4.
  • the valve as shown in FIGURE 1 is indicated as being applied to a mouth-to-mouth respiration device which would consist of a tube 6 which is mounted at its lower end 7 on the valve 1 in communication with the outlet passageway 4 by means of a mounting groove 8.
  • the tube 6 is of suflicient length to contain a desired volume of air, and has mounted at its other end 9, a mouthpiece to enable the operator to inhale and exhale through the tube 6.
  • the end 9 of the tube 6 may be affixed to a face mask, or to another source of air or oxygen.
  • FIGURE 1 illustrates the inhalation cycle of the breath- 3,242,921 Patented Mar. 29, 1966 ing control valve.
  • the operator With the mouthpiece 10 inserted in the mouth of the operator, the operator inhales through the tube 6, which causes the valve 12, to unseat.
  • Valves 12 are flexible members which are mounted by a mounting means 16 on the upper portion of the valve 1 and which are disposed to cover and uncover openings 14 in the upper housing 18 of the valve 1.
  • the valve or valves 12 Upon inhalation of the operator through the tube 6 the valve or valves 12 are unseated, as above described, and air will flow through the ports 14 into the chamber 22, and up into the tube 6.
  • the valve 1 is comprised of upper and lower housing members 18 and 20 which enclasp a flexible valve member 24.
  • This valve member 24 is in effect a dual valve which alternately seats upon valve opening 26 and upon valve opening 28.
  • the valve opening 26 leads into chamber 22 and passageway 4, and the valve opening 28 leads into passageway 30 and out to the atmosphere.
  • the operator inhales and draws a column of air into the tube 6, he simultaneously creates sufficient suction in the chamber 22 to cause the valve member 24 to seat upon the valve seat 26 and thus prevent any egress or ingress of air through the Valve.
  • the ports 34 are arranged to communicate with another annular valve chamber 36 which is in turn in communication with the passageway 2 for egress from the valve 1 to be administered to the patient.
  • a similar tube such as tube 6 may be connected to the valve 1 by mounting upon the lower member 22 at 38 and for insertion into the mouth of the patient. If desired, an ordinary breathing tube may be used. Alternately the tube can lead to a face mask. Thecolumn of air which was formerly within tube 6 is thus forced from tube 6 into chamber 22 past valve opening 26, into chamber 32, through ports 34, into chamber 36 and out through passageway 2 into the patient.
  • valve member 24 Upon the next inhalation cycle (see FIGURE 1) the valve member 24 will be drawn upwardly and seat upon valve seat 26 (as above described), and simultaneously the patient will be permitted to exhale through passive recoil through passage 3 to annular passageway 36, past valve opening 28 and out passageway 30 to the atmosphere.
  • the breathing control valve of the invention thus has ready application to a mouth-to-mouth or mouth-tomask or any other respiratory device and permits the application of the ancient mouth-to-mouth artificial repira- [tion method in a more modern and satisfactory manner to reviving unconscious victims.
  • the device permits untrained operators to use the mouth-to-mouth method with minimum exertion and with maximum effectiveness.
  • FIG- URE 3 An alternate breathing control valve is shown in FIG- URE 3. Equivalent elements are numbered with the same reference numerals as used in FIGURES l and 2.
  • the control valve 1 of FIGURE 3 also consists of upper and lower housing members 18 and 20 which enclasp a flexible valve member 25.
  • the housing member 20 has an outlet passageway 2 and the housing member 18 has an inlet passageway 4.
  • the valves 12 of the modifications of FIGURES l and 2 are replaced with a simple skirt type inhalation valve 13 which is mounted to cooperate with similar ports 14.
  • the valve member 24 is provided with two convolutions 35 and 37 instead of the single convolution 37 as found in the valve member 24 of the embodiment of FIGURES 1 and 2. The employment of two convolutions 35 and 37 enables a more flexible and smoother operation of the valve member 24.
  • FIGURES 3 and 4 The operation of the breathing control valve of FIGURES 3 and 4 is similar to that of FIGURES l and 2 and is as follows:
  • the inhalation flapper valve 13 When the pressure in chamber 22 is caused to decrease (such as by inhalation and the creating of a vacuum in passageway 4) the inhalation flapper valve 13 is caused to move inwardly to uncover the passageway openings 14 and permit air to enter into the chamber 22 and upwards into the passageway 4.
  • the valve member 24 is seated upon the valve seat 26.
  • valve ports 14 When a sufiicient volume of air is drawn through the valve ports 14, then pressure is exerted upon the air in chamber 22 to force the flapper valve 13 to seat and seal off the passageways 14, and simultaneously to force the valve member 24 downwardly to seat upon the vali e seat 28 (see FIGURE 4) and permit the air within the chamber 22 to pass into the annular chamber 32 through the ports 34 into the annular chamber 36, and out through passageway 4 to the patient.
  • a control valve comprising: a housing having an inner chamber; a first, second and third passageway within said valve leading from said chamber; said first passageway being adapted to be connected to a source of positive pressure fluid; said second passageway being adapted to be alternately sealed and opened; said third passageway being alternately in communication with said first and second passageways; a flexible valve member of substantially planar configuration rigidly aflixed at its outermost periphery within said housing and extending completely across said chamber; said valve member having an imperforate central area and a plurality of perforations outside of said central area; said first and second passageways being arranged on opposing sides of said valve member and terminating in a first and a second valve seat, respectively; said valve seats being arranged opposite to the imperforate central area of said valve member; said valve member and passageways being so constructed and arranged that said valve member is movable into a first position wherein it is seated on said first valve seat thus preventing communication between said first and third passageways, while simultaneously permitting communication between said second and third
  • first and second passageways lie on a substantially common axis in alignment with one another centrally of said housing, and said third passageway being located towards the periphery of said housing and on the same side of the valve member as said second passageway.
  • a breathing control valve for use with a face mask comprising: a housing having an inner chamber; a first, second, third and fourth passageway leading to and from said housing; said first passageway interconnecting the chamber to the exterior of said housing and having a first valve member associated therewith to alternately permit inflow of fluid from a source external to said valve into said passageway, and to .seal said passageway against egress of fluid from said chamber; said second passageway interconnecting said first passageway to a source of intermittent negative and positive pressure; said third passageway being adapted to be alternatively sealed and opened to ambient; said fourth passageway being alternately in communication with said first and third passageways; and a second valve member of substantially planar flexible construction rigidly aflixed at its outermost periphery within said housing and extending completely across said chamber; said valve member having an imperforate central area and a plurality of perforations outside of said central area; said second valve member being alternatively movable into a first and a second position; said second valve member being so arranged
  • first and third passageways lie on a substantially common axis in alignment with one another centrally of said housing, said latter passageways terminating in first and second valve seats, respectively, juxtaposed one on each side of said second valve member; said second valve member while in said first position seating on said first valve seat, and while in said second position seating on said second valve seat.
  • a portable respiration device comprising, in combination: a breathing tube connected at one end to a breathing control valve; said control valve comprising a housing having an upper and lower inner chamber; a first, second and third passageway within said valve leading from said chamber; said first passageway interconnecting the upper chamber to the exterior of said housing and having a first valve member associated therewith to alternatively permit inflow of fluid from a source external to said valve into said passageway, and to seal said passageway against egress of fluid from said upper chamber; said breathing tube being connected to said first passageway; said second passageway being adapted to be alternatively sealed and opened to ambient; said third passageway being alternatively in communication with said first and third passageways; a second valve member of substantially planar flexible construction rigidly affixed at its outermost periphery within said housing and forming a common wall separating said upper and lower inner chambers; said second valve member having an imperforate central area and a plurality of perforations outside of said central area; said first and second passageways being arranged on opposing sides of
  • first and second passageways lie on a substantially common axis in alignment with one another centrally of said housing, and said third passageway being located towards the periphery of said housing and on the same side of the valve member as said second passageway.
  • a resuscitator device comprising an inlet chamber to which pressure is adapted to be supplied intermittently, a delivery chamber adapted to be placed in communication with a users air way, a pressure relief chamber adapted to communicate with a pressure relieving atmosphere, a single flexible diaphragm forming a wall of each of, and separating, said inlet and pressure relief chambers, means at an end of said inlet chamber forming an inhalation valve seat at one side of said diaphragm and cooperating with said one side of said diaphragm to provide an inhalation valve providing communication between said inlet chamber and said delivery chamber when it is open, and closing said communication when it is closed, means at an end of said pressure relief chamber forming an-exhalation valve seat at the other side of said diaphragm and cooperating with said other side of said diaphragm to provide an exhalation valve providing communicaton between said delivery chamber and said pressure relief chamber when it is open, and closing said communiction when it is closed, said inhalation valve seat being space

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Multiple-Way Valves (AREA)
US746996A 1958-07-07 1958-07-07 Breatching control valve Expired - Lifetime US3242921A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US746996A US3242921A (en) 1958-07-07 1958-07-07 Breatching control valve
FR1204285D FR1204285A (fr) 1958-07-07 1958-10-27 Soupape de réglage de la respiration
GB34719/58A GB875790A (en) 1958-07-07 1958-10-29 Breathing control valve
SE487459A SE192516C1 (sv) 1958-07-07 1959-05-22 Andningsventil, särskilt för konstgjord andning
DES63777A DE1282230B (de) 1958-07-07 1959-07-06 Ventil fuer Beatmungsgeraete
CH7540659A CH372932A (de) 1958-07-07 1959-07-07 Ventileinrichtung
LU37971A LU37971A1 (fr) 1958-07-07 1959-11-25 Valve respiratoire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US746996A US3242921A (en) 1958-07-07 1958-07-07 Breatching control valve

Publications (1)

Publication Number Publication Date
US3242921A true US3242921A (en) 1966-03-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
US746996A Expired - Lifetime US3242921A (en) 1958-07-07 1958-07-07 Breatching control valve

Country Status (7)

Country Link
US (1) US3242921A (de)
CH (1) CH372932A (de)
DE (1) DE1282230B (de)
FR (1) FR1204285A (de)
GB (1) GB875790A (de)
LU (1) LU37971A1 (de)
SE (1) SE192516C1 (de)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419031A (en) * 1965-03-15 1968-12-31 Hesse Breathing valve
US3425409A (en) * 1965-11-08 1969-02-04 Max Isaacson Resuscitator
US3435839A (en) * 1965-05-21 1969-04-01 Elder Oxygen Co Inc Backflow bypassing valve for breathing apparatus
US3507297A (en) * 1964-06-23 1970-04-21 Norman P Dann Artificial respiration apparatus
US3556122A (en) * 1964-06-15 1971-01-19 Laerdal A S Valve for artificial respiration apparatus
US3610236A (en) * 1966-11-22 1971-10-05 Globe Safety Products Inc Resuscitator device
US3643686A (en) * 1970-10-21 1972-02-22 Ewald Koegel High-velocity breathing valve
US3726274A (en) * 1971-09-27 1973-04-10 Bird F M Non-rebreathing valve assembly and compression bulb resuscitator using same
US3882860A (en) * 1972-04-12 1975-05-13 Frimberger Eckart Reanimation device
US3923054A (en) * 1974-05-13 1975-12-02 Jr George H Bauer Resuscitation device
US3957046A (en) * 1974-11-27 1976-05-18 Salvatore G. Militana Disposable mouth to mouth resuscitation device
US4253455A (en) * 1978-08-07 1981-03-03 A-T-O Inc. Breathing valve assembly with diaphragm control of the exhaust ports
US4274425A (en) * 1978-05-12 1981-06-23 Sachs-Systemtechnik Gmbh Mouthpiece for a redox gas measuring device
US4449525A (en) * 1981-02-08 1984-05-22 White Daniel S Pulmonary resuscitator
USRE31785E (en) * 1978-08-07 1985-01-01 Figgie International, Inc. Breathing valve assembly with diaphragm control of the exhaust ports
US4520811A (en) * 1981-02-08 1985-06-04 Grove Medical Supply, Inc. Pulmonary resuscitator
US4552133A (en) * 1983-08-18 1985-11-12 Kawaei Co., Ltd. Rapid exhaust valve for use in blood circulation stimulator
US4811730A (en) * 1988-07-18 1989-03-14 Seitz Corporation CPR face mask and method of using same
US4819627A (en) * 1988-02-08 1989-04-11 Connors Donald J Cardiopulmonary resuscitation device
US4856506A (en) * 1988-01-11 1989-08-15 Jinotti Walter J Apparatus for mouth-to-mouth resuscitation
US4881540A (en) * 1988-02-05 1989-11-21 Vigilia Larry P Device and method for assisting in artificial respiration
US20080257351A1 (en) * 2007-04-19 2008-10-23 David Gitschlag Resuscitation device
US20090112016A1 (en) * 2007-10-26 2009-04-30 The Purolite Company Controlled catalysis
WO2019014567A1 (en) * 2017-07-13 2019-01-17 Fresca Medical Inc. SLEEP APNEA TREATMENT SYSTEM AND IMPROVEMENTS IN SLEEP
US10765830B2 (en) * 2017-07-13 2020-09-08 Fresca Medical, Inc. Sleep apnea treatment system and improvements thereto
US20220008685A1 (en) * 2018-12-14 2022-01-13 Teijin Pharma Limited Breathing apparatus
US11253672B2 (en) 2016-03-22 2022-02-22 Fresca Medical, Inc. Sleep apnea treatment system and improvements thereto

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158152A (en) * 1960-09-16 1964-11-24 Sierra Engineering Company Mouth to mouth resuscitator
DE1247554B (de) * 1961-07-04 1967-08-17 Aga Ab Ventil fuer Atmungsgeraete
US3219030A (en) * 1962-02-09 1965-11-23 Jr Roscoe G Bartlett Apparatus for use in mouth-to-mouth resuscitation
US3286710A (en) * 1962-02-09 1966-11-22 Jr Roscoe G Bartlett Apparatus for use in mouth-to-mouth resuscitation
US3356100A (en) * 1962-11-07 1967-12-05 Gerda A Seeler Breathing control valve and operator therefor
US3251359A (en) * 1963-04-25 1966-05-17 Ismach Aaron Automatic intermittent positive pressure ventilators
DE1271900B (de) * 1964-01-17 1968-07-04 Draegerwerk Ag Beatmungsgeraet
US3518989A (en) * 1966-02-14 1970-07-07 Henry W Seeler Valve assembly
US3599657A (en) * 1969-04-07 1971-08-17 Bruning Co Double diaphram check valve
US4217921A (en) * 1978-06-16 1980-08-19 Zurn Industries, Inc. Back flow preventer valve
US4774941A (en) * 1983-05-04 1988-10-04 Intertech Resources Inc. Resuscitator bag
DE3607320A1 (de) * 1986-03-06 1987-09-10 Draegerwerk Ag Vorrichtung zur steuerung von atemgas in einem narkose- bzw. beatmungsgeraet
US5355877A (en) * 1993-05-03 1994-10-18 Cheng Yu W Mouth-to-mouth resuscitation device having a sealed valve position to protect a rescuer
US5749358A (en) 1996-10-10 1998-05-12 Nellcor Puritan Bennett Incorporated Resuscitator bag exhaust port with CO2 indicator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615463A (en) * 1945-11-14 1952-10-28 Henry L Burns Fluid pressure apparatus and valve means therefor
US2640481A (en) * 1950-02-14 1953-06-02 American Optical Corp Exhalation valve
USRE24193E (en) * 1945-02-17 1956-08-07 Pressure resuscitator
US2887104A (en) * 1958-03-12 1959-05-19 Sovinsky Eugene Mask to mask resuscitator
US2902992A (en) * 1955-10-12 1959-09-08 Renvall Bengt Gunnar Johan Bellows mechanism for artificial respiration

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE496982A (de) *
GB750152A (en) * 1953-03-10 1956-06-13 John Henry Blease An improved valve for use in controlling human respiration
GB748363A (en) * 1953-08-05 1956-05-02 British Oxygen Co Ltd Improvements in or relating to fluid actuated valves

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24193E (en) * 1945-02-17 1956-08-07 Pressure resuscitator
US2615463A (en) * 1945-11-14 1952-10-28 Henry L Burns Fluid pressure apparatus and valve means therefor
US2640481A (en) * 1950-02-14 1953-06-02 American Optical Corp Exhalation valve
US2902992A (en) * 1955-10-12 1959-09-08 Renvall Bengt Gunnar Johan Bellows mechanism for artificial respiration
US2887104A (en) * 1958-03-12 1959-05-19 Sovinsky Eugene Mask to mask resuscitator

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556122A (en) * 1964-06-15 1971-01-19 Laerdal A S Valve for artificial respiration apparatus
US3507297A (en) * 1964-06-23 1970-04-21 Norman P Dann Artificial respiration apparatus
US3419031A (en) * 1965-03-15 1968-12-31 Hesse Breathing valve
US3435839A (en) * 1965-05-21 1969-04-01 Elder Oxygen Co Inc Backflow bypassing valve for breathing apparatus
US3425409A (en) * 1965-11-08 1969-02-04 Max Isaacson Resuscitator
US3610236A (en) * 1966-11-22 1971-10-05 Globe Safety Products Inc Resuscitator device
US3643686A (en) * 1970-10-21 1972-02-22 Ewald Koegel High-velocity breathing valve
US3726274A (en) * 1971-09-27 1973-04-10 Bird F M Non-rebreathing valve assembly and compression bulb resuscitator using same
US3882860A (en) * 1972-04-12 1975-05-13 Frimberger Eckart Reanimation device
US3923054A (en) * 1974-05-13 1975-12-02 Jr George H Bauer Resuscitation device
US3957046A (en) * 1974-11-27 1976-05-18 Salvatore G. Militana Disposable mouth to mouth resuscitation device
US4274425A (en) * 1978-05-12 1981-06-23 Sachs-Systemtechnik Gmbh Mouthpiece for a redox gas measuring device
USRE31785E (en) * 1978-08-07 1985-01-01 Figgie International, Inc. Breathing valve assembly with diaphragm control of the exhaust ports
US4253455A (en) * 1978-08-07 1981-03-03 A-T-O Inc. Breathing valve assembly with diaphragm control of the exhaust ports
US4449525A (en) * 1981-02-08 1984-05-22 White Daniel S Pulmonary resuscitator
US4520811A (en) * 1981-02-08 1985-06-04 Grove Medical Supply, Inc. Pulmonary resuscitator
US4552133A (en) * 1983-08-18 1985-11-12 Kawaei Co., Ltd. Rapid exhaust valve for use in blood circulation stimulator
US4856506A (en) * 1988-01-11 1989-08-15 Jinotti Walter J Apparatus for mouth-to-mouth resuscitation
US4881540A (en) * 1988-02-05 1989-11-21 Vigilia Larry P Device and method for assisting in artificial respiration
US4819627A (en) * 1988-02-08 1989-04-11 Connors Donald J Cardiopulmonary resuscitation device
US4811730A (en) * 1988-07-18 1989-03-14 Seitz Corporation CPR face mask and method of using same
US20080257351A1 (en) * 2007-04-19 2008-10-23 David Gitschlag Resuscitation device
US20090112016A1 (en) * 2007-10-26 2009-04-30 The Purolite Company Controlled catalysis
US8729295B2 (en) 2007-10-26 2014-05-20 The Purolite Company Controlled catalysis
US11253672B2 (en) 2016-03-22 2022-02-22 Fresca Medical, Inc. Sleep apnea treatment system and improvements thereto
WO2019014567A1 (en) * 2017-07-13 2019-01-17 Fresca Medical Inc. SLEEP APNEA TREATMENT SYSTEM AND IMPROVEMENTS IN SLEEP
US10765830B2 (en) * 2017-07-13 2020-09-08 Fresca Medical, Inc. Sleep apnea treatment system and improvements thereto
US20220008685A1 (en) * 2018-12-14 2022-01-13 Teijin Pharma Limited Breathing apparatus

Also Published As

Publication number Publication date
GB875790A (en) 1961-08-23
LU37971A1 (fr) 1960-01-25
DE1282230B (de) 1968-11-07
FR1204285A (fr) 1960-01-25
SE192516C1 (sv) 1964-11-10
CH372932A (de) 1963-10-31

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