WO1996040336A3 - Pneumatically-operated gas demand apparatus - Google Patents

Pneumatically-operated gas demand apparatus Download PDF

Info

Publication number
WO1996040336A3
WO1996040336A3 PCT/US1996/007958 US9607958W WO9640336A3 WO 1996040336 A3 WO1996040336 A3 WO 1996040336A3 US 9607958 W US9607958 W US 9607958W WO 9640336 A3 WO9640336 A3 WO 9640336A3
Authority
WO
WIPO (PCT)
Prior art keywords
recipient
gas
chamber region
flow
diaphragm
Prior art date
Application number
PCT/US1996/007958
Other languages
French (fr)
Other versions
WO1996040336A2 (en
Inventor
James M Davenport
Original Assignee
Salter Labs
James M Davenport
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Salter Labs, James M Davenport filed Critical Salter Labs
Priority to JP50082797A priority Critical patent/JP3802065B2/en
Priority to AU59510/96A priority patent/AU714583B2/en
Priority to DE69626643T priority patent/DE69626643T2/en
Priority to CA002223328A priority patent/CA2223328C/en
Priority to EP96916748A priority patent/EP0831950B1/en
Priority to AT96916748T priority patent/ATE234127T1/en
Publication of WO1996040336A2 publication Critical patent/WO1996040336A2/en
Publication of WO1996040336A3 publication Critical patent/WO1996040336A3/en
Priority to MXPA/A/1997/009753A priority patent/MXPA97009753A/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0666—Nasal cannulas or tubing
    • A61M16/0672—Nasal cannula assemblies for oxygen therapy
    • A61M16/0677—Gas-saving devices therefor
    • 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
    • A61M16/201—Controlled valves
    • A61M16/207—Membrane valves with pneumatic amplification stage, i.e. having master and slave membranes
    • 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
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/06—Sprayers or atomisers specially adapted for therapeutic purposes of the injector type
    • 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
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
    • A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor

Abstract

A pneumatically-operated gas demand apparatus coupled in interruptible fluid communication between a recipient and a first source of a pressurized first gas controls delivery of the first gas to the recipient as the recipient inhales and exhales and comprises a supply valve and a sensing valve. The supply valve has a first interior chamber divided by a flexible first diaphragm into a supply chamber region and a control chamber region. The supply chamber region is in interruptible fluid communication between the first source of the first gas and the recipient. The control chamber region is in continuous fluid communication with a second source of a pressurized second gas. The sensing valve has a second interior chamber divided by a flexible second diaphragm into a venting chamber region and a sensing chamber region. The venting chamber region is in interruptible fluid communication between the control chamber region and an ambient air environment. The sensing chamber region is in continuous fluid communication with the recipient. When the recipient inhales, the second diaphragm moves to a flow-causing position to cause the second gas to flow into the ambient air environment and causes the first diaphragm to move to a flow-supplying position thereby delivering the first gas to the recipient. When the recipient exhales, the second diaphragm moves to a flow-stopping position to prevent the second gas to flow into the ambient air environment and causes the first diaphragm to move to a flow-blocking position thereby preventing delivery of the first gas to the recipient.
PCT/US1996/007958 1995-06-07 1996-06-03 Pneumatically-operated gas demand apparatus WO1996040336A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP50082797A JP3802065B2 (en) 1995-06-07 1996-06-03 Air pressure actuated gas demand device
AU59510/96A AU714583B2 (en) 1995-06-07 1996-06-03 Pneumatically-operated gas demand apparatus
DE69626643T DE69626643T2 (en) 1995-06-07 1996-06-03 PNEUMATICALLY OPERATED GAS DEMAND
CA002223328A CA2223328C (en) 1995-06-07 1996-06-03 Pneumatically-operated gas demand apparatus
EP96916748A EP0831950B1 (en) 1995-06-07 1996-06-03 Pneumatically-operated gas demand apparatus
AT96916748T ATE234127T1 (en) 1995-06-07 1996-06-03 PNEUMATICALLY OPERATED GAS SUPPLY DEVICE
MXPA/A/1997/009753A MXPA97009753A (en) 1995-06-07 1997-12-05 Appliance on gas demand pneumatically oper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/488,202 1995-06-07
US08/488,202 US5666945A (en) 1995-06-07 1995-06-07 Pneumatically-operated gas demand apparatus

Publications (2)

Publication Number Publication Date
WO1996040336A2 WO1996040336A2 (en) 1996-12-19
WO1996040336A3 true WO1996040336A3 (en) 1997-01-30

Family

ID=23938746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/007958 WO1996040336A2 (en) 1995-06-07 1996-06-03 Pneumatically-operated gas demand apparatus

Country Status (8)

Country Link
US (1) US5666945A (en)
EP (1) EP0831950B1 (en)
JP (1) JP3802065B2 (en)
AT (1) ATE234127T1 (en)
AU (1) AU714583B2 (en)
CA (1) CA2223328C (en)
DE (1) DE69626643T2 (en)
WO (1) WO1996040336A2 (en)

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO247496A0 (en) 1996-09-23 1996-10-17 Resmed Limited Assisted ventilation to match patient respiratory need
US6176234B1 (en) * 1997-08-08 2001-01-23 Salter Labs Mouthpiece for a nebulizer
GB9723319D0 (en) * 1997-11-04 1998-01-07 Protector Technologies Bv Oxygen therapy apparatus
FI974148A (en) * 1997-11-05 1999-05-06 Instrumentarium Oy Method and apparatus of a breathing apparatus
US6105929A (en) 1997-11-14 2000-08-22 Salter Labs Control valve for gas supply to a nebulizer
US5918597A (en) * 1998-01-15 1999-07-06 Nellcor Puritan Bennett Peep control in a piston ventilator
US6192884B1 (en) 1998-05-22 2001-02-27 Duke University Method and apparatus for supplemental oxygen delivery
US6260549B1 (en) * 1998-06-18 2001-07-17 Clavius Devices, Inc. Breath-activated metered-dose inhaler
UA73924C2 (en) * 1998-10-09 2005-10-17 Nektar Therapeutics Device for delivering active agent formulation to lungs of human patient
US6394088B1 (en) * 1998-11-06 2002-05-28 Mark R. Frye Oxygen-delivery system with portable oxygen meter
US6318366B1 (en) 1999-09-22 2001-11-20 Salter Labs Supply valve and diaphragm for a pneumatically-operated gas demand apparatus
US6237594B1 (en) 1999-09-22 2001-05-29 Salter Labs Pneumatically-operated gas demand apparatus
US6378520B1 (en) 1999-10-29 2002-04-30 Salter Labs Variable pressure and flow control for a pneumatically-operated gas demand apparatus
US6425396B1 (en) 1999-10-29 2002-07-30 Salter Labs Sensing valve motion limiting mechanism for respiratory equipment
NO311186B1 (en) * 1999-12-13 2001-10-22 Techwood As Valve device for controlled supply of a pressure fluid
US6612307B2 (en) * 2000-09-11 2003-09-02 Western/Scott Fetzer Company Oxygen conserver
JP4293581B2 (en) * 2000-09-21 2009-07-08 日本特殊陶業株式会社 Oxygen concentrator, control device, and recording medium
DE10057040A1 (en) * 2000-11-17 2002-05-23 Peter Ganshorn Device for removing gas from the breathing air or supplying gas to the breathing air
US7066175B2 (en) * 2001-05-07 2006-06-27 Emergent Respiratory Products, Inc. Portable gas powered positive pressure breathing apparatus and method
FR2824479B1 (en) * 2001-05-14 2003-06-27 Dominique Esteve DEVICE FOR APPLYING A PNEUMATIC PRESSURE STIMULUS IN THE NASAL PITS AND IN THE HEARING TRUMPED AT THE TIME OF SWALLOWING
CA2351217C (en) * 2001-06-19 2008-12-02 Teijin Limited An apparatus for supplying a therapeutic oxygen gas
US6484721B1 (en) 2001-06-27 2002-11-26 Chad Therapeutics, Inc. Pneumatic oxygen conserving device
US7089938B2 (en) * 2001-10-19 2006-08-15 Precision Medical, Inc. Pneumatic oxygen conserving device
US20070017520A1 (en) * 2001-10-19 2007-01-25 Gale Peter P Oxygen delivery apparatus
ITBS20010091U1 (en) * 2001-11-12 2003-05-12 Flaem Nuova Spa DEVICE FOR THE WASHING OF NASAL CAVITIES AND THE COLLECTION OF RETURN LIQUIDS AND CATARRAL MATERIAL.
US20030234021A1 (en) * 2002-06-25 2003-12-25 Kuo-Chung Cheng Self-contained flow controlling mechanism of oxygen treatment device
US7267120B2 (en) * 2002-08-19 2007-09-11 Allegiance Corporation Small volume nebulizer
GB2405799A (en) * 2003-09-15 2005-03-16 Vectura Ltd Dry powder inhaler incorporating a valve which is opened and closed by pressurized gas
WO2005082107A2 (en) 2004-02-26 2005-09-09 Ameriflo, Inc. Method and apparatus for regulating fluid flow or conserving fluid flow
US7617826B1 (en) 2004-02-26 2009-11-17 Ameriflo, Inc. Conserver
US7328703B1 (en) * 2004-08-25 2008-02-12 Tiep Brian L Oxygen delivery cannula system that improves the effectiveness of alveolar oxygenation
US20090199855A1 (en) * 2004-11-01 2009-08-13 Davenport James M System and method for conserving oxygen delivery while maintaining saturation
JP4992724B2 (en) 2005-03-02 2012-08-08 コンセプト トゥー マニュファクチャー デザイン オーシーディー リミテッド Breathing gas saving device
DE102005013658B4 (en) * 2005-03-24 2015-06-18 B/E Aerospace Systems Gmbh Pulse regulator
US7909033B2 (en) 2006-05-03 2011-03-22 Comedica Incorporated Breathing treatment apparatus
WO2008008281A2 (en) 2006-07-07 2008-01-17 Proteus Biomedical, Inc. Smart parenteral administration system
GB0617417D0 (en) * 2006-09-05 2006-10-18 Concept 2 Manufacture Design L A nebuliser valve
US8051854B2 (en) 2006-09-15 2011-11-08 Comedica Incorporated Continuous high-frequency oscillation breathing treatment apparatus
US20080230062A1 (en) * 2007-03-23 2008-09-25 General Electric Company Setting expiratory time in mandatory mechanical ventilation based on a deviation from a stable condition of exhaled gas volumes
US9050434B2 (en) 2007-05-18 2015-06-09 Comedica Incorporated Lung therapy device
FR2917295A1 (en) * 2007-06-14 2008-12-19 Air Liquide Portable type nebulization gas supplying apparatus for facilitating gas-driven nebulization of liquid medicine e.g. cisplatin, to patient, has gas conduit collecting gas and transporting gas towards opening of gas jet nebulizer
WO2009055733A1 (en) 2007-10-25 2009-04-30 Proteus Biomedical, Inc. Fluid transfer port information system
WO2009067463A1 (en) 2007-11-19 2009-05-28 Proteus Biomedical, Inc. Body-associated fluid transport structure evaluation devices
CN102245245B (en) * 2008-12-16 2014-11-12 皇家飞利浦电子股份有限公司 Variable flow oxygen therapy
US9151425B2 (en) 2009-11-02 2015-10-06 Comedica Incorporated Multiple conduit connector apparatus and method
CN102905612A (en) 2010-02-01 2013-01-30 普罗秋斯数字健康公司 Two-wrist data gathering system
EP2531099B1 (en) 2010-02-01 2018-12-12 Proteus Digital Health, Inc. Data gathering system
US8590493B1 (en) 2011-07-28 2013-11-26 Brunswick Corporation Systems and devices for separating water and contaminants from fuel
EP2800598B1 (en) 2011-11-03 2020-01-01 Trudell Medical International Breathing apparatus
US9795752B2 (en) 2012-12-03 2017-10-24 Mhs Care-Innovation, Llc Combination respiratory therapy device, system, and method
EP2968807B1 (en) 2013-03-15 2019-07-31 Trudell Medical International Breathing apparatus
JP6192213B2 (en) * 2013-08-29 2017-09-06 株式会社群馬コイケ Oxygen supply equipment
US9539406B2 (en) * 2013-09-10 2017-01-10 General Electric Company Interface device and method for supplying gas flow for subject breathing and apparatus for supplying anesthetic agent to the interface device
CN107735135B (en) 2015-04-02 2020-06-26 希尔－罗姆服务私人有限公司 Manifold for a respiratory device
ES2877530T3 (en) * 2015-09-04 2021-11-17 Air Liquide Gas demand device, installation method, gas supply system and method of use
US11160948B2 (en) * 2016-06-22 2021-11-02 Imam Abdulrahman Bin Faisal University Nebulizer tubing with a port to minimize medicament loss
SG11201907787QA (en) * 2017-02-16 2019-09-27 Air Liquide Method and system for gas delivery including gas conserver
CN112691269A (en) * 2020-12-30 2021-04-23 北京怡和嘉业医疗科技股份有限公司 Fluid connection/disconnection body, fluid connection/disconnection body component, housing, device, ventilation therapy device, and oxygen supply control method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396015A (en) * 1980-12-22 1983-08-02 Johnson Robert J Medication control device for use in treating lungs
US4575042A (en) * 1984-08-17 1986-03-11 Associates Of Dallas Pneumatically amplified conservation valve
US4686974A (en) * 1985-10-18 1987-08-18 Tottori University Breath synchronized gas-insufflation device and method therefor
US4706664A (en) * 1986-04-11 1987-11-17 Puritan-Bennett Corporation Inspiration oxygen saver
EP0285470A1 (en) * 1987-03-05 1988-10-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and device for supplying respiratory oxygen
US4986269A (en) * 1985-05-23 1991-01-22 Etela-Hameen Keuhkovammayhdistys R.Y. Respiration therapy apparatus
FR2695830A1 (en) * 1992-09-18 1994-03-25 Pierre Medical Sa Breathing aid device.
US5360000A (en) * 1987-03-19 1994-11-01 Puritan-Bennett Corporation Pneumatic demand oxygen valve

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414747A (en) * 1942-07-02 1947-01-21 Harry M Kirschbaum Method and apparatus for controlling the oxygen content of the blood of living animals
US2535844A (en) * 1946-08-01 1950-12-26 John H Emerson Aspirator for administering medicine
GB1138274A (en) * 1966-03-04 1968-12-27 Liston Fletcher Inc Therapeutic respirator
US3530856A (en) * 1967-02-28 1970-09-29 Bird F M Mechanical volume limiting ventilator
US3896800A (en) * 1973-07-27 1975-07-29 Airco Inc Method and apparatus for triggering the inspiratory phase of a respirator
US4057059A (en) * 1975-07-29 1977-11-08 Oklahoma State University Intermittent positive pressure breathing device
US4054133A (en) * 1976-03-29 1977-10-18 The Bendix Corporation Control for a demand cannula
US4163450A (en) * 1977-01-27 1979-08-07 Cramp Harvey E Method and apparatus for weaning patient from continuous mechanical ventilation
US4106503A (en) * 1977-03-11 1978-08-15 Richard R. Rosenthal Metering system for stimulating bronchial spasm
US4240419A (en) * 1977-09-26 1980-12-23 Normalair-Garrett (Holdings) Limited Breathable gas delivery regulators
US4498471A (en) * 1982-09-28 1985-02-12 U.S.D. Corp. First and second stage regulator system for breathing gas
US4535767A (en) * 1982-10-01 1985-08-20 Tiep Brian L Oxygen delivery apparatus
US5251618A (en) * 1987-09-30 1993-10-12 Tony Christianson Regulator second stage for scuba
US5165397A (en) * 1988-12-15 1992-11-24 Arp Leon J Method and apparatus for demand oxygen system monitoring and control
AU5524490A (en) * 1989-04-13 1990-11-05 Salter Laboratories Demand oxygen system
US5074298A (en) * 1989-09-01 1991-12-24 E. I. Du Pont De Nemours And Company Gas flow control system
GB9000371D0 (en) * 1990-01-08 1990-03-07 Neotronics Medical Ltd Breathing apparatus
GB9007020D0 (en) * 1990-03-29 1990-05-30 Fxk Patents Ltd Emergency breathing equipment
JPH0557031A (en) * 1991-02-04 1993-03-09 Us Divers Co Inc Secondary regulator for demand breathing
FR2676000B1 (en) * 1991-05-02 1995-12-22 Spirotech Ind Commerc RESPIRATORY GAS SUPPLY DEVICE.
US5280780A (en) * 1992-11-09 1994-01-25 Abel Elaine R Oxygen delivery and conserving device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396015A (en) * 1980-12-22 1983-08-02 Johnson Robert J Medication control device for use in treating lungs
US4575042A (en) * 1984-08-17 1986-03-11 Associates Of Dallas Pneumatically amplified conservation valve
US4986269A (en) * 1985-05-23 1991-01-22 Etela-Hameen Keuhkovammayhdistys R.Y. Respiration therapy apparatus
US4686974A (en) * 1985-10-18 1987-08-18 Tottori University Breath synchronized gas-insufflation device and method therefor
US4706664A (en) * 1986-04-11 1987-11-17 Puritan-Bennett Corporation Inspiration oxygen saver
EP0285470A1 (en) * 1987-03-05 1988-10-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and device for supplying respiratory oxygen
US5360000A (en) * 1987-03-19 1994-11-01 Puritan-Bennett Corporation Pneumatic demand oxygen valve
FR2695830A1 (en) * 1992-09-18 1994-03-25 Pierre Medical Sa Breathing aid device.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WILLIAM W. MUSHIN ET AL.: "Automatic Ventilation of the Lungs", 1980, BLACKWELL SCIENTIFIC PUBLICATIONS, OXFORD LONDON EDINGURGH MELBOURNE, XP002019573, 166160 *

Also Published As

Publication number Publication date
MX9709753A (en) 1998-07-31
ATE234127T1 (en) 2003-03-15
DE69626643D1 (en) 2003-04-17
US5666945A (en) 1997-09-16
WO1996040336A2 (en) 1996-12-19
DE69626643T2 (en) 2004-01-29
AU5951096A (en) 1996-12-30
JP3802065B2 (en) 2006-07-26
EP0831950B1 (en) 2003-03-12
CA2223328A1 (en) 1996-12-19
JPH11506643A (en) 1999-06-15
EP0831950A2 (en) 1998-04-01
CA2223328C (en) 2009-01-20
AU714583B2 (en) 2000-01-06

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