WO1990011791A1 - Demand oxygen system - Google Patents

Demand oxygen system Download PDF

Info

Publication number
WO1990011791A1
WO1990011791A1 PCT/US1990/002012 US9002012W WO9011791A1 WO 1990011791 A1 WO1990011791 A1 WO 1990011791A1 US 9002012 W US9002012 W US 9002012W WO 9011791 A1 WO9011791 A1 WO 9011791A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
patient
face piece
nare
exhalation
Prior art date
Application number
PCT/US1990/002012
Other languages
French (fr)
Inventor
Peter Salter
Original Assignee
Salter Laboratories
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 Laboratories filed Critical Salter Laboratories
Publication of WO1990011791A1 publication Critical patent/WO1990011791A1/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
    • A61M16/06—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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A61M16/0841—Joints or connectors for sampling
    • A61M16/0858—Pressure sampling ports
    • 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
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter

Definitions

  • This invention relates to oxygen delivery systems and methods during supplemental oxygen therapy and, more particularly, to a system for controlling the flow of oxygen to a patient during supplemental oxygen therapy so as to provide oxygen only during the period of patient inhalation.
  • an object of the present invention to provide a simplified system for providing an intermittent flow of oxygen to a patient during supplemental oxygen therapy.
  • the present invention provides a system and a method for controlling the flow of oxygen from a source of oxygen to a patient through a nasal cannula where the flow is controlled by valve means that are operated in response to the initiation of exhalation by the patient.
  • the nasal cannula that is an essential feature of the present invention consists of a conventionally shaped nasal cannula face piece having inlet and outlet conduits communicating respectively with two separate zones in the face piece which are separated by a gas-tight partition means in the face piece.
  • the nasal cannula is provided with two nares or tubes that terminate adjacent the patient's nostrils as is conventional, however, each nare communicates with different zones in the face piece.
  • the inlet conduit or tube communicates with the valve means and the source of oxygen.
  • the outlet conduit communicates,with sensing means capable of sensing the exhalation of the patient at a location remote from the patient and, when exhalation is sensed, the signal produced controls the closing of the valve means to interrupt the flow of oxygen.
  • the sensing means does not sense patient exhalation, or senses patient inhalation, the valve means remains open or is opened to provide a flow of oxygen to the patient through the inlet conduit and one nare of the face piece.
  • FIGURE 1 is a plan view of the nasal cannula used in the present invention.
  • FIGURE 2 is a schematic of the system for practicing the method of the present invention.
  • a dual cannula having a face piece 2 having a dividing web or partition 3 which divides the cannula face piece 2 into two separate zones 4 and 5 into which nares 6 and 7, respectively, communicate.
  • zone 4 also communicates with sensing tubing 11.
  • Zone 5 communicates with delivery tubing 12.
  • Tubing 11 and 12 can be the same or different outside or inside diameters, both tubes 11 and 12 terminate in a connector 15.
  • a bolo 1 is slidably received around the tubes 11 and 12 between the connector 15 and the face piece 2 so that adjustment can be provided for the cannula to fit snugly on the patient, minimizing the chance of movement of the nares 6 and 7 from their proper position adjacent the patient's nostrils.
  • the tubes 17 and 18 are provided with a matching connector 16 to fit connector 15.
  • Sense tubing 11 thereby communicates with tubing 17 which terminates in a connector 20 to be attached to pressure sensing unit T, schematically shown in Figure 2.
  • delivery tubing 12 communicates with tubing 18 which is connected by means of a connector 21 to the valve means V shown in Figure 2, which is connected to a source of oxygen (0 2 in Figure 2) .
  • the pressure sensing unit utilizes a transducer and associated circuitry to detect changes in pressure that will occur at the initiation of exhalation and inhalation by the patient, and to produce an electrical signal capable of actuating the valve means V to open and allow oxygen delivery when the patient is not exhaling. Any sensing unit can be employed that will perform this function.
  • the described system of the present invention provides a method for intermittently controlling the flow of oxygen to the patient through a nasal cannula where delivery of the oxygen is restricted to one nare.
  • the method includes providing a source of oxygen which is connected via valve means V to the one delivery nare.
  • the breathing of the patient is sensed at the end of a sensing conduit which communicates with the nare which is not delivering oxygen, the sensing means including signal producing means for providing a control signal to operate the valve means so that changes in the pressure of the gas in the sensing conduit, produced for example by the exhalation of the patient into the sensing nare, will produce or stop the delivery of oxygen from the source of oxygen to the delivery conduit and the delivery nare.
  • a nasal cannula Likewise inhalation by the patient will produce a signal to open the valve means thereby supplying oxygen to the delivery nare.
  • the foregoing method for controlling the flow of oxygen through a nasal cannula depends on the system being provided with the components and functions described and the provision of the nasal cannula described, having a gas-tight partition separating the face piece into two zones where a delivery nare communicates with one zone and a sensing nare with other zone. With the face piece properly located, the system and method of the present invention are capable of delivering sufficient oxygen to accommodate the range of flow rates normally prescribed for supplemental oxygen therapy.
  • tubing sizes can vary from those shown or suggested and the design of the face piece and nares can deviate from those shown while still providing the gas-tight separation of the face piece into two separate zones.
  • tubing shown from the connector 15, 16 to the connectors can vary from those shown or suggested and the design of the face piece and nares can deviate from those shown while still providing the gas-tight separation of the face piece into two separate zones.
  • 20 and 21 can be separate tubes or multi-channel tubing.

Abstract

An intermittent oxygen delivery system for supplying oxygen to a first nare (7) of a nasal cannula in response to patient's exhalation sensed through the second nare (6) which is isolated from the delivery of the oxygen to the first nare.

Description

DEMAND OXYGEN SYSTEM
This invention relates to oxygen delivery systems and methods during supplemental oxygen therapy and, more particularly, to a system for controlling the flow of oxygen to a patient during supplemental oxygen therapy so as to provide oxygen only during the period of patient inhalation.
Prior devices and systems developed for the purpose of conserving oxygen during the delivery of oxygen have generally involved relatively complicated pneumatic and/or electromechanical devices. Simplification of the apparatus for providing intermittent delivery of oxygen in response to a patient's inhalation and exhalation cycles is desirable and has been sought.
It is, therefore, an object of the present invention to provide a simplified system for providing an intermittent flow of oxygen to a patient during supplemental oxygen therapy.
SUMMARY OF THE INVENTION
The present invention provides a system and a method for controlling the flow of oxygen from a source of oxygen to a patient through a nasal cannula where the flow is controlled by valve means that are operated in response to the initiation of exhalation by the patient. The nasal cannula that is an essential feature of the present invention consists of a conventionally shaped nasal cannula face piece having inlet and outlet conduits communicating respectively with two separate zones in the face piece which are separated by a gas-tight partition means in the face piece. The nasal cannula is provided with two nares or tubes that terminate adjacent the patient's nostrils as is conventional, however, each nare communicates with different zones in the face piece. The inlet conduit or tube communicates with the valve means and the source of oxygen. The outlet conduit communicates,with sensing means capable of sensing the exhalation of the patient at a location remote from the patient and, when exhalation is sensed, the signal produced controls the closing of the valve means to interrupt the flow of oxygen. When the sensing means does not sense patient exhalation, or senses patient inhalation, the valve means remains open or is opened to provide a flow of oxygen to the patient through the inlet conduit and one nare of the face piece.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a plan view of the nasal cannula used in the present invention.
FIGURE 2 is a schematic of the system for practicing the method of the present invention.
DETAIIJSD DESCRIPTION OF THE INVENTION
Referring to Figure 1, a dual cannula is illustrated having a face piece 2 having a dividing web or partition 3 which divides the cannula face piece 2 into two separate zones 4 and 5 into which nares 6 and 7, respectively, communicate. In the embodiment shown, zone 4 also communicates with sensing tubing 11. Zone 5 communicates with delivery tubing 12. Tubing 11 and 12 can be the same or different outside or inside diameters, both tubes 11 and 12 terminate in a connector 15. Preferably a bolo 1 is slidably received around the tubes 11 and 12 between the connector 15 and the face piece 2 so that adjustment can be provided for the cannula to fit snugly on the patient, minimizing the chance of movement of the nares 6 and 7 from their proper position adjacent the patient's nostrils. The tubes 17 and 18 are provided with a matching connector 16 to fit connector 15. Sense tubing 11 thereby communicates with tubing 17 which terminates in a connector 20 to be attached to pressure sensing unit T, schematically shown in Figure 2. Likewise delivery tubing 12 communicates with tubing 18 which is connected by means of a connector 21 to the valve means V shown in Figure 2, which is connected to a source of oxygen (02 in Figure 2) . Preferably the pressure sensing unit utilizes a transducer and associated circuitry to detect changes in pressure that will occur at the initiation of exhalation and inhalation by the patient, and to produce an electrical signal capable of actuating the valve means V to open and allow oxygen delivery when the patient is not exhaling. Any sensing unit can be employed that will perform this function.
In operation, the described system of the present invention provides a method for intermittently controlling the flow of oxygen to the patient through a nasal cannula where delivery of the oxygen is restricted to one nare. The method includes providing a source of oxygen which is connected via valve means V to the one delivery nare. The breathing of the patient is sensed at the end of a sensing conduit which communicates with the nare which is not delivering oxygen, the sensing means including signal producing means for providing a control signal to operate the valve means so that changes in the pressure of the gas in the sensing conduit, produced for example by the exhalation of the patient into the sensing nare, will produce or stop the delivery of oxygen from the source of oxygen to the delivery conduit and the delivery nare.
Likewise inhalation by the patient will produce a signal to open the valve means thereby supplying oxygen to the delivery nare. The foregoing method for controlling the flow of oxygen through a nasal cannula depends on the system being provided with the components and functions described and the provision of the nasal cannula described, having a gas-tight partition separating the face piece into two zones where a delivery nare communicates with one zone and a sensing nare with other zone. With the face piece properly located, the system and method of the present invention are capable of delivering sufficient oxygen to accommodate the range of flow rates normally prescribed for supplemental oxygen therapy.
It will be appreciated that choices of tubing sizes can vary from those shown or suggested and the design of the face piece and nares can deviate from those shown while still providing the gas-tight separation of the face piece into two separate zones. Likewise, the tubing shown from the connector 15, 16 to the connectors
20 and 21 can be separate tubes or multi-channel tubing.
The present invention has been described with respect to its preferred embodiment, the scope of the invention is to be limited only to the scope of the appended claims interpreted in view of the pertinent prior art.

Claims

1. A method of controlling the flow of oxygen to a patient through a nasal cannula having a face piece, two nares and a first and second tube conduit, comprising the steps of: providing a source of oxygen; controlling, by valve means, the flow of oxygen to a first tube conduit of a nasal cannula; sensing the nasal exhalation of a patient by sensor means, said exhalation being sensed at the end of said second tube conduit remote from the face piece of said nasal cannula; supplying oxygen to said cannula through said first tube conduit by the opening of said valve means in response to signals generated by said sensor means, said valve means communicating electrically with said sensor means and cooperating therewith to provide for an intermittent supply of oxygen in response to the exhalation of the patient so that oxygen is supplied when the patient is not exhaling; said cannula face piece with two nares having communication between one nare and one of said tube conduits and the other nare and the other of said tube conduits and said face piece containing a gas tight partition separating the face piece into two separate zones where each zone communicates with one nare so that the step of sensing and the step of supplying do not communicate and thereby interfere with said control and supply.
PCT/US1990/002012 1989-04-13 1990-04-13 Demand oxygen system WO1990011791A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US33737589A 1989-04-13 1989-04-13
US337,375 1989-04-13

Publications (1)

Publication Number Publication Date
WO1990011791A1 true WO1990011791A1 (en) 1990-10-18

Family

ID=23320314

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/002012 WO1990011791A1 (en) 1989-04-13 1990-04-13 Demand oxygen system

Country Status (4)

Country Link
US (1) US5137017A (en)
EP (1) EP0419640A4 (en)
AU (1) AU5524490A (en)
WO (1) WO1990011791A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2051237A1 (en) * 1992-11-20 1994-06-01 Lecea Flores De Lemus Carlos D Nasal device for the control and administration of gases to a patient
WO2015125080A1 (en) * 2014-02-18 2015-08-27 Koninklijke Philips N.V. Headgear tubing assembly and integrated pressure sensing
EP1988953B1 (en) * 2006-02-14 2017-07-19 Optinose AS Delivery device
US20200222646A1 (en) * 2007-11-16 2020-07-16 Fisher & Paykel Healthcare Limited Nasal pillows with high volume bypass flow and method of using same

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0549299B1 (en) 1991-12-20 2002-03-13 Resmed Limited Ventilator for continuous positive airway pressure breathing (CPAP)
US5495848A (en) * 1994-11-25 1996-03-05 Nellcar Puritan Bennett Monitoring system for delivery of therapeutic gas
US5571075A (en) * 1995-04-28 1996-11-05 Bullard; Horace Method for exercise and simultaneous movement of blood by external pressure
US5666945A (en) * 1995-06-07 1997-09-16 Salter Labs Pneumatically-operated gas demand apparatus
US5603315A (en) * 1995-08-14 1997-02-18 Reliable Engineering Multiple mode oxygen delivery system
JPH09122200A (en) * 1995-11-06 1997-05-13 Toyo Tire & Rubber Co Ltd Instrument and system for supporting respiration
US6048810A (en) * 1996-11-12 2000-04-11 Baychar; Waterproof/breathable moisture transfer liner for snowboard boots, alpine boots, hiking boots and the like
US5890490A (en) * 1996-11-29 1999-04-06 Aylsworth; Alonzo C. Therapeutic gas flow monitoring system
US5911219A (en) * 1997-04-18 1999-06-15 Aylsworth; Alonzo C. Therapeutic gas flow meter and monitor
US6439234B1 (en) 1998-04-03 2002-08-27 Salter Labs Nasal cannula
US7640932B2 (en) * 1997-04-29 2010-01-05 Salter Labs Nasal cannula for acquiring breathing information
WO1998048876A1 (en) * 1997-04-29 1998-11-05 Salters Labs Nasal cannula
US20100113956A1 (en) * 1997-04-29 2010-05-06 Salter Labs Nasal cannula for acquiring breathing information
US6532958B1 (en) 1997-07-25 2003-03-18 Minnesota Innovative Technologies & Instruments Corporation Automated control and conservation of supplemental respiratory oxygen
US6371114B1 (en) 1998-07-24 2002-04-16 Minnesota Innovative Technologies & Instruments Corporation Control device for supplying supplemental respiratory oxygen
US6394088B1 (en) * 1998-11-06 2002-05-28 Mark R. Frye Oxygen-delivery system with portable oxygen meter
US20070137653A1 (en) 2000-03-13 2007-06-21 Wood Thomas J Ventilation interface for sleep apnea therapy
US6595215B2 (en) * 2000-03-13 2003-07-22 Innomed Technologies, Inc. Ventilation interface for sleep apnea therapy
US6478026B1 (en) * 1999-03-13 2002-11-12 Thomas J. Wood Nasal ventilation interface
US6776162B2 (en) * 2000-03-13 2004-08-17 Innomed Technologies, Inc. Ventilation interface for sleep apnea therapy
US6192883B1 (en) 1999-08-03 2001-02-27 Richard L. Miller, Jr. Oxygen flow control system and method
US20060150982A1 (en) * 2003-08-05 2006-07-13 Wood Thomas J Nasal ventilation interface and system
US7059328B2 (en) * 2000-03-13 2006-06-13 Innomed Technologies, Inc. Ventilation interface for sleep apnea therapy
US6612307B2 (en) * 2000-09-11 2003-09-02 Western/Scott Fetzer Company Oxygen conserver
JP4246365B2 (en) * 2000-09-21 2009-04-02 日本特殊陶業株式会社 Oxygen concentrator, its control device, and recording medium
JP2002085568A (en) * 2000-09-21 2002-03-26 Ngk Spark Plug Co Ltd Oxygen supplier, controller and recording medium therefor
CA2370995C (en) * 2001-09-13 2010-08-17 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US6679265B2 (en) * 2001-10-25 2004-01-20 Worldwide Medical Technologies Nasal cannula
US20030111081A1 (en) * 2001-12-19 2003-06-19 Gupta Parshotam C. Detachable nasal cannula assembly
US6913017B2 (en) * 2002-01-04 2005-07-05 Bevely Roberts Apparatus for delivering inhalant and monitoring exhaled fluid, method of making same, and method of delivering inhalant and monitoring exhaled fluid
US20040035431A1 (en) * 2002-08-21 2004-02-26 Wright Clifford A. Ear cannula system and method of using same
US6986353B2 (en) * 2002-08-21 2006-01-17 Medical Device Group, Inc. Divided nasal cannula assembly
EP2913079B1 (en) 2002-09-06 2017-10-25 ResMed Limited Cushion for respiratory mask assembly
NZ591788A (en) 2002-11-06 2012-10-26 Resmed Ltd Layered mask cushion assembly
US20040182397A1 (en) * 2003-03-21 2004-09-23 Innomed Technologies, Inc. Nasal interface including ventilation insert
US7066180B2 (en) * 2003-07-09 2006-06-27 Airmatrix Technologies, Inc. Method and system for measuring airflow of nares
US20050235999A1 (en) * 2004-04-23 2005-10-27 Wood Thomas J Nasal ventilation interface and system
US7191781B2 (en) 2003-08-05 2007-03-20 Innomed Technologies, Inc. Nasal ventilation interface and system
US7472707B2 (en) * 2003-08-06 2009-01-06 Innomed Technologies, Inc. Nasal interface and system including ventilation insert
US6997187B2 (en) * 2003-09-10 2006-02-14 Innomed Technologies, Inc. Nasal interface and system including ventilation insert
US7000613B2 (en) * 2003-08-06 2006-02-21 Innomed Technologies, Inc. Nasal interface and system including ventilation insert
US7007692B2 (en) * 2003-10-29 2006-03-07 Airmatrix Technologies, Inc. Method and system of sensing airflow and delivering therapeutic gas to a patient
NZ765601A (en) * 2003-12-31 2022-01-28 ResMed Pty Ltd Compact oronasal patient interface
US7007694B2 (en) * 2004-05-21 2006-03-07 Acoba, Llc Nasal cannula
WO2005118040A1 (en) 2004-06-03 2005-12-15 Resmed Limited Cushion for a patient interface
US7013898B2 (en) * 2004-07-09 2006-03-21 Praxair Technology, Inc. Nasal pressure sensor oxygen therapy device
US20090199855A1 (en) * 2004-11-01 2009-08-13 Davenport James M System and method for conserving oxygen delivery while maintaining saturation
US8261745B2 (en) 2004-12-10 2012-09-11 Respcare, Inc. Ventilation interface
US8042539B2 (en) * 2004-12-10 2011-10-25 Respcare, Inc. Hybrid ventilation mask with nasal interface and method for configuring such a mask
CN109011081B (en) 2005-01-12 2022-01-28 瑞思迈私人有限公司 Cushion for patient interface
JP2006198093A (en) * 2005-01-19 2006-08-03 Izumi Products Co Rotary electric shaver
US20060169281A1 (en) * 2005-02-03 2006-08-03 Aylsworth Alonzo C Continuous flow selective delivery of therapeutic gas
US20060174885A1 (en) * 2005-02-08 2006-08-10 Acoba, Llc Method and related system to control applied pressure in CPAP systems
US7735490B2 (en) 2005-02-12 2010-06-15 Tracey Lyn Rinaldi Adjustable nasal cannula apparatus and method of use
US7559327B2 (en) 2005-05-31 2009-07-14 Respcare, Inc. Ventilation interface
JP5254787B2 (en) 2005-06-06 2013-08-07 レスメド・リミテッド Mask system
NZ591992A (en) 2005-10-14 2012-11-30 Resmed Ltd Breathing mask with cushion attached to frame via lip of cushion engaging within recess between frame outer and inner walls, and guided in via angled protrusion of frame inner wall
NZ612787A (en) 2005-10-25 2015-01-30 Resmed Ltd Interchangeable mask assembly
US7422015B2 (en) * 2005-11-22 2008-09-09 The General Electric Company Arrangement and method for detecting spontaneous respiratory effort of a patient
US20080078393A1 (en) * 2005-11-22 2008-04-03 General Electric Company Respiratory monitoring with cannula receiving respiratory airflows, differential pressure transducer, and ventilator
US20070113850A1 (en) * 2005-11-22 2007-05-24 General Electric Company Respiratory monitoring with cannula receiving respiratory airflows and differential pressure transducer
US20070113856A1 (en) * 2005-11-22 2007-05-24 General Electric Company Respiratory monitoring with cannula receiving respiratory airflows
US20070113848A1 (en) * 2005-11-22 2007-05-24 General Electric Company Respiratory monitoring with cannula receiving respiratory airflows and exhaled gases
US20070113847A1 (en) * 2005-11-22 2007-05-24 General Electric Company Respiratory monitoring with cannula receiving first respiratory airflows and second respiratory airflows
US8789532B2 (en) 2006-03-10 2014-07-29 Respcare, Inc. Ventilation mask
USD623288S1 (en) 2006-04-28 2010-09-07 Resmed Limited Patient interface
USD597199S1 (en) 2006-04-28 2009-07-28 Resmed Limited Respiratory mask frame
US8887725B2 (en) * 2006-05-10 2014-11-18 Respcare, Inc. Ventilation interface
US20080027344A1 (en) * 2006-07-27 2008-01-31 Ric Investments, Llc Modular sidestream gas sampling assembly
NZ596570A (en) 2006-07-28 2014-02-28 Resmed Ltd Delivery of respiratory therapy
NZ738046A (en) 2006-07-28 2019-06-28 ResMed Pty Ltd Delivery of respiratory therapy
US8161971B2 (en) 2006-08-04 2012-04-24 Ric Investments, Llc Nasal and oral patient interface
KR100791004B1 (en) * 2006-12-01 2008-01-04 삼성전자주식회사 Vacuum type picker and picking method
EP2101855B1 (en) 2006-12-15 2013-08-21 ResMed Limited Respiratory Mask
US8517023B2 (en) 2007-01-30 2013-08-27 Resmed Limited Mask system with interchangeable headgear connectors
US20090139522A1 (en) * 2007-02-21 2009-06-04 Vortran Medical Technology 1, Inc. Monitor for automatic resuscitator with optional gas flow control
NZ589685A (en) 2007-04-19 2012-06-29 Resmed Ltd Cushion for patient breathing interface with variable density foam supported membrane
AU2008203372B2 (en) 2007-07-30 2013-12-19 Resmed Limited Patient Interface
US20090032018A1 (en) * 2007-08-03 2009-02-05 Eaton Jason P System Adapted to Provide a Flow of Gas to an Airway of a Patient
US8215301B2 (en) * 2007-08-29 2012-07-10 Smiths Medical Asd, Inc. Nose cannula heated/humidified gas delivery system
US20090205660A1 (en) * 2008-02-15 2009-08-20 Vortran Medical Technology 1, Inc. Monitor for automatic resuscitator with primary and secondary gas flow control
US11331447B2 (en) 2008-03-04 2022-05-17 ResMed Pty Ltd Mask system with snap-fit shroud
EP2259827B1 (en) 2008-03-04 2019-10-30 ResMed Pty Ltd A foam respiratory mask
NZ624599A (en) 2008-03-04 2014-08-29 Resmed Ltd Mask system
NZ735524A (en) 2008-03-04 2019-05-31 ResMed Pty Ltd An interface including a foam cushioning element
US8905031B2 (en) 2008-06-04 2014-12-09 Resmed Limited Patient interface systems
US8291906B2 (en) 2008-06-04 2012-10-23 Resmed Limited Patient interface systems
CN104771821B (en) 2008-09-12 2018-10-16 瑞思迈有限公司 The interface structure method and apparatus of foam-based
EP2213324B1 (en) 2009-01-30 2016-07-27 ResMed R&D Germany GmbH Patient interface structure and method/tool for manufacturing same
WO2012006415A1 (en) 2010-07-08 2012-01-12 Guyette Robert F Nasal mask
CN104117120A (en) * 2014-07-13 2014-10-29 张跃 Nasal cavity inserting device
US10441196B2 (en) 2015-01-23 2019-10-15 Masimo Corporation Nasal/oral cannula system and manufacturing
CN104667398B (en) * 2015-01-29 2017-06-20 深圳市科曼医疗设备有限公司 Lung ventilator and its air flue servicing unit
USD886993S1 (en) 2019-02-19 2020-06-09 Teleflex Medical Incorporated Nasal cannula bolo
US20210128864A1 (en) * 2019-11-06 2021-05-06 Koninklijke Philips N.V. Oxygen recovery during nasal therapy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462398A (en) * 1982-12-03 1984-07-31 Kircaldie, Randal and McNab, Trustee Respirating gas supply method and apparatus therefor
US4575042A (en) * 1984-08-17 1986-03-11 Associates Of Dallas Pneumatically amplified conservation valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172407A (en) * 1961-09-29 1965-03-09 Baxter Don Inc Gas administration apparatus
US4054133A (en) * 1976-03-29 1977-10-18 The Bendix Corporation Control for a demand cannula
US4584996A (en) * 1984-03-12 1986-04-29 Blum Alvin S Apparatus for conservative supplemental oxygen therapy
DE8813445U1 (en) * 1988-10-26 1989-01-05 Peschel, Peter, 2806 Oyten, De
US4989599A (en) * 1989-01-26 1991-02-05 Puritan-Bennett Corporation Dual lumen cannula

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462398A (en) * 1982-12-03 1984-07-31 Kircaldie, Randal and McNab, Trustee Respirating gas supply method and apparatus therefor
US4575042A (en) * 1984-08-17 1986-03-11 Associates Of Dallas Pneumatically amplified conservation valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0419640A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2051237A1 (en) * 1992-11-20 1994-06-01 Lecea Flores De Lemus Carlos D Nasal device for the control and administration of gases to a patient
EP1988953B1 (en) * 2006-02-14 2017-07-19 Optinose AS Delivery device
US20200222646A1 (en) * 2007-11-16 2020-07-16 Fisher & Paykel Healthcare Limited Nasal pillows with high volume bypass flow and method of using same
WO2015125080A1 (en) * 2014-02-18 2015-08-27 Koninklijke Philips N.V. Headgear tubing assembly and integrated pressure sensing
CN106029146A (en) * 2014-02-18 2016-10-12 皇家飞利浦有限公司 Headgear tubing assembly and integrated pressure sensing
US10493227B2 (en) 2014-02-18 2019-12-03 Koninklijke Philips N.V. Headgear tubing assembly and integrated pressure sensing

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AU5524490A (en) 1990-11-05
EP0419640A1 (en) 1991-04-03
US5137017A (en) 1992-08-11
EP0419640A4 (en) 1992-01-22

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