US3807445A - Audible pressure relief valve for medical humidifier - Google Patents
Audible pressure relief valve for medical humidifier Download PDFInfo
- Publication number
- US3807445A US3807445A US00264349A US26434972A US3807445A US 3807445 A US3807445 A US 3807445A US 00264349 A US00264349 A US 00264349A US 26434972 A US26434972 A US 26434972A US 3807445 A US3807445 A US 3807445A
- Authority
- US
- United States
- Prior art keywords
- disc
- valve
- combination
- passage
- pressure
- 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
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Classifications
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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
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
- A61M16/209—Relief 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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/141—Check valves with flexible valve members the closure elements not being fixed to the valve body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
-
- 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
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0666—Nasal cannulas or tubing
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
- A61M2205/183—General characteristics of the apparatus with alarm the sound being generated pneumatically
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8158—With indicator, register, recorder, alarm or inspection means
- Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm
Definitions
- the valve has a 128/1424, 1465, 138 rubber disc that is dimensionally tuned to vibrate 1 v against a valve seat and emit an audible sound over a l 56]
- This valve audibly vi- UNITED STATES PATENTS brates at gas flow rates of 31015 liters per minute and pressures of l to 5 psi above atmospheric pressure.
- BACKGROUND Inhalation therapy has been used more and more in recent years for treating emphysema and other lung and respiratory diseases, as well as postoperative treatment and cardiac patient care.
- One form of inhalation therapy involves mixing a breathable gas such as air or oxygen with a liquid.
- This humidified gas is supplied to a mask, nasal cannula, or tent, where it is breathed by the patient.
- a conventional medical humidifier system includes a dry gas source such as a portable oxygen tank or central oxygen supply system of a hospital, coupled with a container of the humidifying liquid. Humidification is accomplished by atomizing liquid into the gas or by bubbling the gas through the liquid.
- This special relief valve includes a thin rubber disc that is dimensionally tuned to simultaneously release pressures a low pressure range of between 1 and psi above atmospheric and also to audibly vibrate at this pressure with low gas flow rates of from 3 to liters per minute. This rubber disc is gently urged against a valve seat by a retention post of the special valve. The structure and operation of this valve will become more apparent with reference to the following attached drawings.
- FIG. 1 is a front elevational view of the special pressure relief valve shown encased in an adapter that connects a dry gas source, a liquid supply source and a tube leading to the patient;
- FIG. 2 is anenlarged front elevational view of the adapter prior to its connection of the elements listed above;
- FIG. 3 is a further enlarged sectional view of the adapter showing the various passages of the adapter and how the special pressure relief valve is coordinated therein;
- FIG. 4 is a right side view of a retention plug of FIG. 3, shown before it is assembled to a body of the adapter;
- FIG. 5 is a left side view of the valve of FIG. 3, shown with the retention plug removed and viewing the flexible resilient disc fitting against a valve seat;
- FIG. 6 is a further enlarged fragmentary sectional view of the resilient disc showing how it audibly vibrates against a valve seat at low flow rates of gas.
- the medical humidifier apparatus includes a dry gas source 1 that is shown terminating in a threaded nipple 2.
- dry gas is used to indicate a breathable gas such as air or oxygen, etc., before it is humidified with a special humidifier.
- a screw cap 4 Connected to this nipple is a screw cap 4 that is swivelly mounted on adapter 5.
- a lower end of this adapter 5 connects directly to a liquid supply 'bottle 6 through a port in cap 7 of the bottle.
- adapter has a tubular side arm 8 that connects with a patients supply tube 9 which leads to a mask 10.
- a patients supply tube 9 which leads to a mask 10.
- the adapter itself prior to connection with dry gas source 1 and bottle 6 is shown in enlarged view in FIG. 2.
- the special connection of this adapter to cap 5 is explained in more detail in my co-pending application entitled Port System for Medical Humidifier Container filed 19 June 1972, Ser. No. 264,315.
- adapter 5 When adapter 5 is connected in the bottle 6 through cap 7 it communicates with a defoaming device and a gas-liquid mixing column.
- FIGS. 1 and 2 the resilient pressure relief disc is shown only in schematic dotted line.
- this resilient disc 11 is shown as it relates to the internal structure of adapter 5.
- This adapter 5 includes a body member 15 with an upper flange 16 for connecting inside screw cap 4 and a lower snap fit flange 17 for fitting inside cap 7 of bottle 6.
- Extending longitudinally through body 15 of the adapter is a dry gas passage 18.
- this dry gas passage 18 is defined by a tubular dry gas tube 19.
- the adapter 15 also includes a tubular outer wall 20 at a lower portion of its body.
- the tubes 19 and 20 are located on a common longitudinal axis and define an annular humidified gas passage 21 therebetween.
- I-Iumidified gas passage 21 communicates with a passage 22 in a tubular side arm 8 of the body. This passage 22 feeds gas into a patients tube 9.
- the dry gas passage 18 and the interconnecting humidified gas passages 21 and 22 mentioned above cooperate to supply the bottle 6 with a dry gas such as oxygen and carry off humidified oxygen. Until there is a kink in the patients tube or otherwise some abnormal pressure buildup these passages are all that are needed for conducting the gases.
- the body 15 includes a port 23 that communicates with the humidified gas passage 21.
- the port also is in communication with a relief cavity 24 that is defined by a ledge surface 25 and a shoulder surface 26.
- This relief cavity provides an area into which the resilient disc 11 can flex without obstruction when urged against an annular valve seat 27 surrounding the relief cavity 24.
- the resilient rubber disc fits against valve seat 27 and is aligned with port 23 by an upstanding flange 28 around the valve seat.
- flange 28 has a series of guide ribs illustrated by 29 and 30. These guide ribs keep the flexible rubber disc 11 aligned on the valve seat and reduce friction and drag during audible vibrations by contacting an edge of the rubber disc.
- a retention plug 32 Fitting across the flange 28 is a retention plug 32.
- This plug includes a baffle plate 33 with a hole 34.
- the baffle plate is attached to a depending skirt'35 that telescopically fits into flange 28.
- the skirt 35 and flange 28 include an innerconnecting annular groove and rib structure 36 and 37 that snap fit together to hold the plug to the flange.
- the baffle plate of the plug has an integral retention post 38, which extends to a distal end 39 that includes a protruding rounded pressure surface 40 with a radius of from 0.010 to 0.050.
- This retention post 38 engages a center portion of the imperforate resilient disc 11 and gently urges it against valve seat 27.
- the posts small rounded pressure surface does not substantially restrict the flex characteristics of the resilient disc during audible vibration under low pressure and low volume gas flow.
- disc 11 When there is a kink in the patient line 9 or a blockage therein. disc 11 will open at some pressure between 1 and psi over atmospheric. At this pressure and flow rate of between 3 and liters of gas per minute through port 23 cause the rubber disc 11 to audibly vibrate against seat 27. This audible vibration signals a nurse or physician that the patients supply line has become blocked.
- a natural rubber disc of material 0.020 to 0.130 inch thick and with a diameter of 0.200 to 0.600 inch will audibly vibrate at these low pressures and flow rates when gently urged by retention post 38 against the valve seat 27.
- the rubber disc has a thickness of 0.050 and a diameter of 0.350.
- the vent hole 34 in baffle plate 33 is from 0.030 to 0.100 inch diameter and the baffle plate is spaced from 0.100 to 0.200 inch from the resilient disc 11 there is a harmonic relationship set up between the vibrating rubber disc and the hole 34. This increases the intensity of the audible sound.
- the special construction of the audible pressure relief valve makes for easy assembly during manufacture.
- the rubber disc is fitted into a pocket of the flange 28 and retention plug 32 is simply snapped into place. It can also be heat sealed in place to more firmly lock the plug in place.
- the entire structures of the adapter body and retention plug are injection molded of a polypropylene thermoplastic material. This method of manufacture is sufficiently inexpensive so that the entire adapter, pressure relief valve and connected bottle 6 can be discarded after a single use on a single patient. This reduces the risk of cross contamination between patients.
- my invention 1 have provided a special audible pressure relief valve that simultaneously performs two functions at a low gas flow rate and a low pressure. It both reliably releases the pressure buildup and audibly signals a nurse or physician to come and correct the blocked or kinked tube leading to the patient.
- a low-pressure, audible relief valve-and-gas administration adapter for use in a gas inhalation therapy system in which gas is to be constantly administered to a patient, comprising in combination:
- a body having passage means therethrough and including means for connecting the passage to a pressurized source of treatment gas and means for connecting the passage means to a gas treatment means, an elongated through-passage extending from end-to-end and including means at one end for connection to a pressurized gas source and means at the other end for connection to gas treatment means; the body including second passage means.
- valve assembly including means for communication with the treated gas for constantly directing treated gas to a patient; and a low-pressure relief valve assembly connected in parallel communication with said second passage means for relieving excessive pressures therein and audibly aprizing one of the high pressures in said second passage means and inoperativeness of the system, said valve assembly including pressure-relief cavity means in said body opening to said second passage means and subject to pressures therein; a valve seat surrounding said pressure-relief cavity means; a resilient pressurerelief valve disc displacably seated at one side on said valve seat and closing said cavity, said body including atmospheric vent means open to the opposite side of said disc for relieving pressure in said second passage means when the valve disc is displaced; said body including post means having a relatively small area engaging the opposite side of said valve disc and normally biasing the valve-disc onto the seat, said disc being engaged by said post to permit surrounding portions of the disc to be vibrationally displaced by pressures over a predetermined value in said second passage means, the disc being constructed and arranged to vibrate at relatively low pressure
- the resilient disc includes a thin-body which audibly vibrates at relief pressures of 1-5 psi above atmospheric.
- the resilient pressure relief disc includes a thin body which will audibly vibrate at gas flow rates in the range of 3 to liters/minute.
- valve body includes an upstanding flange surrounding the valve seat to retain the disc in alignment with the relief port and the body includes at least one guide rib on the interior of the upstanding flange for engagement of an edge surface of the resilient disc.
- the body includes retention means integral with the post means, the retention means includes a baffle plate having a hole therethrough with a cross sectional area equivalent to a round hole of a diameter from .030 to 0.100 inch.
- baffle plate is spaced a distance of from 0.100 to 0.200 inch from the resilient valve disc so as to create a harmonic whistle through the combination ifthe vibrating resilient disc and the baffle plates hole.
- interengaging snap fit means includes an annular groove and rib structure on the skirt and flange.
- the resilient disc is rubber and has a thickness from 0.020 to 0.130 inch and a diameter of from 0.200 inch to 0.600 inch.
- a combination low pressure audible relief valve and adaptor for use in gas inhalation therapy comprising: a molded body including an elongated through passage extending from end-to-end and including means at one end for connection to a pressurized gas source and means at the other end for connection to gas treatment means; a second passage in said body surrounding the first-mentioned passage and including a tubular side arm in communication therewith for directing treated gas to a patient, an audible, pressure relief valve assembly connected to said second passage in parallel communication with the second passage and subject to the pressures existing therein, said valve assembly comprising a pressure relief cavity in direct communication with said second passage, a valve seat surrounding said cavity in spaced lateral relation from said second passage, a relatively small, flat resilient disc engaged at one .side on said seat and functioning to retain pressures below a predetermined value in said second passage, said body including a wall surrounding said valve seat and disc and an apertured baffle wall communicating with the atmosphere exposing the other side of the disc to atmospheric pressure, said baffle wall including an
- the resilient valve disc is and rubber of from 0.020 inch to 0.130 inch thick and with a diameter of from 0.200 inch to 0.600 inch.
- the resilient disc is spaced from the apertured baffle wall so that it will vibrate over the range of 3 to 15 liters/minute of gas passing through thepressure relief cavity, the baffle wall being spaced a distance of from 0.100 -0.200 inch from the valve disc and containing a vent-opening having a cross-sectional area equivalent to that of a round hole with a diameter from 0.030 -O.100 inch.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Pulmonology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Anesthesiology (AREA)
- Emergency Medicine (AREA)
- Safety Valves (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Air Humidification (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00264349A US3807445A (en) | 1972-06-19 | 1972-06-19 | Audible pressure relief valve for medical humidifier |
CA166,080A CA975650A (en) | 1972-06-19 | 1973-03-14 | Audible pressure relief valve for medical humidifier |
AU53487/73A AU481570B2 (en) | 1972-06-19 | 1973-03-19 | Audible pressure relief valve for medical humidifier |
BE129508A BE797605A (fr) | 1972-06-19 | 1973-03-30 | Soupape de surete sonore pour humidificateur medical |
IT49166/73A IT980078B (it) | 1972-06-19 | 1973-03-30 | Perfezionamento negli inalatori |
FR7312063A FR2191048B1 (ja) | 1972-06-19 | 1973-04-04 | |
ES413665A ES413665A1 (es) | 1972-06-19 | 1973-04-13 | Un dispositivo valvular aliviador de presion. |
JP48050394A JPS4951629A (ja) | 1972-06-19 | 1973-05-08 | |
GB2726973A GB1433263A (en) | 1972-06-19 | 1973-06-07 | Audible pressure relief valve for a medical humidifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00264349A US3807445A (en) | 1972-06-19 | 1972-06-19 | Audible pressure relief valve for medical humidifier |
Publications (1)
Publication Number | Publication Date |
---|---|
US3807445A true US3807445A (en) | 1974-04-30 |
Family
ID=23005655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00264349A Expired - Lifetime US3807445A (en) | 1972-06-19 | 1972-06-19 | Audible pressure relief valve for medical humidifier |
Country Status (8)
Country | Link |
---|---|
US (1) | US3807445A (ja) |
JP (1) | JPS4951629A (ja) |
BE (1) | BE797605A (ja) |
CA (1) | CA975650A (ja) |
ES (1) | ES413665A1 (ja) |
FR (1) | FR2191048B1 (ja) |
GB (1) | GB1433263A (ja) |
IT (1) | IT980078B (ja) |
Cited By (53)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3949934A (en) * | 1973-06-14 | 1976-04-13 | Luigi Goglio | Container having a valve movable between one-way flow and closed positions |
US3954121A (en) * | 1975-03-17 | 1976-05-04 | The Weatherhead Company | Vent check valve |
US4036919A (en) * | 1974-06-26 | 1977-07-19 | Inhalation Therapy Equipment, Inc. | Nebulizer-humidifier system |
US4039639A (en) * | 1975-04-10 | 1977-08-02 | Richard L. Kankel | Liquid entraining system of the humidifier and nebulizer type |
US4051847A (en) * | 1972-01-17 | 1977-10-04 | Melvyn Lane Henkin | Anesthesia rebreathing apparatus |
US4134940A (en) * | 1977-10-25 | 1979-01-16 | Aerwey Laboratories, Inc. | Humidifier adapter with audio relief valve |
US4142677A (en) * | 1977-06-27 | 1979-03-06 | Tom Mcguane Industries, Inc. | Fuel vapor vent valve |
US4149556A (en) * | 1978-09-26 | 1979-04-17 | Respiratory Care, Inc. | Tubular connector having audible relief valve |
US4210173A (en) * | 1976-12-06 | 1980-07-01 | American Hospital Supply Corporation | Syringe pumping system with valves |
US4244378A (en) * | 1978-05-30 | 1981-01-13 | The West Company | Pressure responsive one-way valve for medical systems |
USRE30552E (en) * | 1979-06-25 | 1981-03-24 | Tom Mcguane Industries, Inc. | Fuel vapor vent valve |
US4286628A (en) * | 1979-06-21 | 1981-09-01 | Nypro, Inc. | Control of fluid flow using longitudinally movable disc |
US4317456A (en) * | 1980-03-10 | 1982-03-02 | Becton, Dickinson And Company | Multiple sample needle with anti-backflow valve |
US4338267A (en) * | 1979-08-23 | 1982-07-06 | Becton, Dickinson And Company | Medical gas humidifier with audible pressure relief valve and method of use |
WO1982002932A1 (en) * | 1981-02-18 | 1982-09-02 | Inc Nypro | Control of fluid flow |
US4350647A (en) * | 1981-06-19 | 1982-09-21 | Respiratory Care, Inc. | Permanent adapter for a medical humidifier |
US4415003A (en) * | 1981-02-18 | 1983-11-15 | Nypro Inc. | Control of fluid flow using a flexible disc |
US4556086A (en) * | 1984-09-26 | 1985-12-03 | Burron Medical Inc. | Dual disc low pressure back-check valve |
US4615693A (en) * | 1984-03-27 | 1986-10-07 | Nypro Inc. | Administration of fluids |
US4681132A (en) * | 1986-05-23 | 1987-07-21 | Halkey-Roberts Corporation | Check valve with preset cracking pressure |
US4749003A (en) * | 1987-01-22 | 1988-06-07 | Filtertek, Inc. | Center flow check valve |
US4762149A (en) * | 1986-11-05 | 1988-08-09 | Pickl Jr Joseph | Double seal press assembled check valve |
US4765372A (en) * | 1983-06-17 | 1988-08-23 | Illinois Tool Works Inc. | Check valve |
US4915879A (en) * | 1986-09-19 | 1990-04-10 | Automatic Liquid Packaging, Inc. | Signal coupling for humidifier container |
US4966199A (en) * | 1989-06-08 | 1990-10-30 | Filtertek, Inc. | Diaphragm-type center flow check valve |
US5039401A (en) * | 1990-05-16 | 1991-08-13 | Eastman Kodak Company | Blood collection and centrifugal separation device including a valve |
EP0702974A3 (en) * | 1989-01-19 | 1996-04-03 | Automatic Liquid Packaging, Inc. | Humidifier container |
US5971723A (en) * | 1995-07-13 | 1999-10-26 | Knf Flodos Ag | Dosing pump |
US6021961A (en) * | 1998-03-06 | 2000-02-08 | Flexible Products Company | Crossover-resistant plural component mixing nozzle |
US6062248A (en) * | 1997-08-13 | 2000-05-16 | Boelkins; Wallace G. | Fluid flow-sensor and valve |
US6409707B1 (en) * | 1999-10-22 | 2002-06-25 | Industrie Borla Spa | Anti-siphon valve for medical infusion lines and the like |
US6568557B2 (en) | 2000-03-16 | 2003-05-27 | Cosco Management, Inc. | Spill proof training cup |
US20040040559A1 (en) * | 2002-02-04 | 2004-03-04 | Paul Moody | Breathing assistance apparatus |
EP1471962A1 (en) * | 2002-02-04 | 2004-11-03 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
US20070068841A1 (en) * | 2005-09-28 | 2007-03-29 | Compac Japan Ltd. | Deflation valve for compression bag and compression bag equipped with the deflation valve |
WO2007098926A1 (de) * | 2006-03-01 | 2007-09-07 | Ino Therapeutics Gmbh | Vorrichtung zur zuführung eines atemgases |
US20070281598A1 (en) * | 2006-05-31 | 2007-12-06 | Grand Mate Co., Ltd. | Ventilating hood for water heater |
US20080216830A1 (en) * | 2007-03-06 | 2008-09-11 | Smiths Medical Asd, Inc. | Respiratory gas humidifier adapter with pressure relief valve and audible signal generator |
US20090173391A1 (en) * | 2008-01-08 | 2009-07-09 | Pradip Choksi | Adjustable pressure relief valve |
US20100282253A1 (en) * | 2009-02-04 | 2010-11-11 | Wet Nose Technologies, Llc. | Pressure release systems, apparatus and methods |
US20120145745A1 (en) * | 2010-12-10 | 2012-06-14 | Kmq, Inc. | Reusable pour-on gun system |
US20150343165A1 (en) * | 1999-06-18 | 2015-12-03 | Resmed Limited | Container for a respiratory mask and a respiratory mask |
EP2560720B1 (en) * | 2010-04-22 | 2017-08-02 | Omar Mian | Gas flow indicator |
US20180296175A1 (en) * | 2015-10-07 | 2018-10-18 | Illinois Tool Works Inc. | Check valve assembly |
US10369321B2 (en) * | 2016-08-19 | 2019-08-06 | Doctor Vox Saglik Hizmetleri Ve Medikal Cihazlar Limited Sirketi | Voice therapy and vocal training device |
US20190255368A1 (en) * | 2016-11-04 | 2019-08-22 | Ansell Limited | Low-flow alarm and valve |
RU2707779C2 (ru) * | 2015-04-02 | 2019-11-29 | Сафран Трансмишн Системз | Масляное сопло для газотурбинного двигателя |
US11318267B2 (en) | 2006-09-12 | 2022-05-03 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
US11406777B2 (en) | 2005-09-12 | 2022-08-09 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
US11458270B2 (en) * | 2005-09-12 | 2022-10-04 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
US11497407B2 (en) | 2005-09-12 | 2022-11-15 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
US11696992B2 (en) | 2005-09-12 | 2023-07-11 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
US11717174B2 (en) | 2005-09-12 | 2023-08-08 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3125496C2 (de) * | 1981-06-29 | 1983-12-29 | Wipf AG Verpackungen, 8404 Volketswil | Überdruckventil zur Entlüftung von Verpackungen |
JPS6241968U (ja) * | 1985-09-02 | 1987-03-13 | ||
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CN104307081B (zh) * | 2014-11-13 | 2016-05-11 | 颜晓波 | 墙插式氧气吸入器 |
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US3954121A (en) * | 1975-03-17 | 1976-05-04 | The Weatherhead Company | Vent check valve |
US4039639A (en) * | 1975-04-10 | 1977-08-02 | Richard L. Kankel | Liquid entraining system of the humidifier and nebulizer type |
US4210173A (en) * | 1976-12-06 | 1980-07-01 | American Hospital Supply Corporation | Syringe pumping system with valves |
US4142677A (en) * | 1977-06-27 | 1979-03-06 | Tom Mcguane Industries, Inc. | Fuel vapor vent valve |
US4134940A (en) * | 1977-10-25 | 1979-01-16 | Aerwey Laboratories, Inc. | Humidifier adapter with audio relief valve |
US4244378A (en) * | 1978-05-30 | 1981-01-13 | The West Company | Pressure responsive one-way valve for medical systems |
US4149556A (en) * | 1978-09-26 | 1979-04-17 | Respiratory Care, Inc. | Tubular connector having audible relief valve |
US4286628A (en) * | 1979-06-21 | 1981-09-01 | Nypro, Inc. | Control of fluid flow using longitudinally movable disc |
USRE30552E (en) * | 1979-06-25 | 1981-03-24 | Tom Mcguane Industries, Inc. | Fuel vapor vent valve |
US4338267A (en) * | 1979-08-23 | 1982-07-06 | Becton, Dickinson And Company | Medical gas humidifier with audible pressure relief valve and method of use |
US4317456A (en) * | 1980-03-10 | 1982-03-02 | Becton, Dickinson And Company | Multiple sample needle with anti-backflow valve |
WO1982002932A1 (en) * | 1981-02-18 | 1982-09-02 | Inc Nypro | Control of fluid flow |
US4369812A (en) * | 1981-02-18 | 1983-01-25 | Nypro Inc. | Control of fluid flow using precisely positioned disc |
US4415003A (en) * | 1981-02-18 | 1983-11-15 | Nypro Inc. | Control of fluid flow using a flexible disc |
US4350647A (en) * | 1981-06-19 | 1982-09-21 | Respiratory Care, Inc. | Permanent adapter for a medical humidifier |
US4765372A (en) * | 1983-06-17 | 1988-08-23 | Illinois Tool Works Inc. | Check valve |
US4615693A (en) * | 1984-03-27 | 1986-10-07 | Nypro Inc. | Administration of fluids |
US4556086A (en) * | 1984-09-26 | 1985-12-03 | Burron Medical Inc. | Dual disc low pressure back-check valve |
US4681132A (en) * | 1986-05-23 | 1987-07-21 | Halkey-Roberts Corporation | Check valve with preset cracking pressure |
US4915879A (en) * | 1986-09-19 | 1990-04-10 | Automatic Liquid Packaging, Inc. | Signal coupling for humidifier container |
US4762149A (en) * | 1986-11-05 | 1988-08-09 | Pickl Jr Joseph | Double seal press assembled check valve |
US4749003A (en) * | 1987-01-22 | 1988-06-07 | Filtertek, Inc. | Center flow check valve |
EP0702974A3 (en) * | 1989-01-19 | 1996-04-03 | Automatic Liquid Packaging, Inc. | Humidifier container |
US4966199A (en) * | 1989-06-08 | 1990-10-30 | Filtertek, Inc. | Diaphragm-type center flow check valve |
US5039401A (en) * | 1990-05-16 | 1991-08-13 | Eastman Kodak Company | Blood collection and centrifugal separation device including a valve |
US5971723A (en) * | 1995-07-13 | 1999-10-26 | Knf Flodos Ag | Dosing pump |
US6062248A (en) * | 1997-08-13 | 2000-05-16 | Boelkins; Wallace G. | Fluid flow-sensor and valve |
US6021961A (en) * | 1998-03-06 | 2000-02-08 | Flexible Products Company | Crossover-resistant plural component mixing nozzle |
US9999740B2 (en) | 1999-06-18 | 2018-06-19 | Resmed Limited | Connector for a respiratory mask and a respiratory mask |
US9814855B2 (en) * | 1999-06-18 | 2017-11-14 | Resmed Limited | Connector for a respiratory mask and a respiratory mask |
US20150343165A1 (en) * | 1999-06-18 | 2015-12-03 | Resmed Limited | Container for a respiratory mask and a respiratory mask |
US6409707B1 (en) * | 1999-10-22 | 2002-06-25 | Industrie Borla Spa | Anti-siphon valve for medical infusion lines and the like |
US6568557B2 (en) | 2000-03-16 | 2003-05-27 | Cosco Management, Inc. | Spill proof training cup |
US9750905B2 (en) | 2002-02-04 | 2017-09-05 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
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US9913953B2 (en) | 2002-02-04 | 2018-03-13 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
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US20100170509A1 (en) * | 2002-02-04 | 2010-07-08 | Paul Moody | Breathing assistance apparatus |
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US11833301B2 (en) | 2005-09-12 | 2023-12-05 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
US11696992B2 (en) | 2005-09-12 | 2023-07-11 | ResMed Pty Ltd | High flow therapy device utilizing a non-sealing respiratory interface and related methods |
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US20070068841A1 (en) * | 2005-09-28 | 2007-03-29 | Compac Japan Ltd. | Deflation valve for compression bag and compression bag equipped with the deflation valve |
US7475864B2 (en) * | 2005-09-28 | 2009-01-13 | Osamu Kawai | Deflation valve for compression bag and compression bag equipped with the deflation valve |
WO2007098926A1 (de) * | 2006-03-01 | 2007-09-07 | Ino Therapeutics Gmbh | Vorrichtung zur zuführung eines atemgases |
US20070281598A1 (en) * | 2006-05-31 | 2007-12-06 | Grand Mate Co., Ltd. | Ventilating hood for water heater |
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Also Published As
Publication number | Publication date |
---|---|
BE797605A (fr) | 1973-07-16 |
ES413665A1 (es) | 1976-01-16 |
FR2191048A1 (ja) | 1974-02-01 |
CA975650A (en) | 1975-10-07 |
FR2191048B1 (ja) | 1978-12-29 |
GB1433263A (en) | 1976-04-22 |
JPS4951629A (ja) | 1974-05-20 |
IT980078B (it) | 1974-09-30 |
AU5348773A (en) | 1974-09-19 |
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