CA2421808A1 - Carbon dioxide-based bi-level cpap control - Google Patents

Carbon dioxide-based bi-level cpap control Download PDF

Info

Publication number
CA2421808A1
CA2421808A1 CA002421808A CA2421808A CA2421808A1 CA 2421808 A1 CA2421808 A1 CA 2421808A1 CA 002421808 A CA002421808 A CA 002421808A CA 2421808 A CA2421808 A CA 2421808A CA 2421808 A1 CA2421808 A1 CA 2421808A1
Authority
CA
Canada
Prior art keywords
carbon
dioxide
level
patient
breathing interface
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.)
Granted
Application number
CA002421808A
Other languages
French (fr)
Other versions
CA2421808C (en
Inventor
Joseph B. Ii Richey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Invacare Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2421808A1 publication Critical patent/CA2421808A1/en
Application granted granted Critical
Publication of CA2421808C publication Critical patent/CA2421808C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A61M16/161—Devices to humidify the respiration air with means for measuring the humidity
    • 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
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
    • 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
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • A61M16/024—Control means therefor including calculation means, e.g. using a processor
    • 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
    • A61M16/085—Gas sampling
    • 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
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • 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
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/40—Respiratory characteristics
    • A61M2230/43—Composition of exhalation
    • A61M2230/432—Composition of exhalation partial CO2 pressure (P-CO2)

Abstract

A system and method of providing bi-level CPAP therapy is provided that incorporates an infrared carbon-dioxide sensor (124) to determine whether a patient is inhaling or exhaling. Patient exhalation causes the infrared ligh t to be absorbed, while patient inhalation reduces the presence of carbon- dioxide causes little or no absorption of carbon-dioxide. The level of carbo n- dioxide in an associated patient breathing interface is monitored for thresholds that trigger higher CPAP pressure upon inhalation and lower CPAP pressure upon exhalation.

Claims (28)

1. A method of providing a breathing gas comprising the steps of:

sensing a carbon-dioxide level associated with a patient breathing interface;

determining if the level of carbon-dioxide is increasing or decreasing;

if the level is decreasing, determining if the level of carbon-dioxide has crossed a threshold parameter;

if the carbon-dioxide level has crossed the threshold parameter, increasing the breathing gas pressure provided to the patient breathing interface;

decreasing the breathing gas pressure provided to the patient breathing interface after a predetermined period of time; and the increasing and decreasing of breathing gas pressure maintaining a positive pressure sufficient to sustain open the airway of a patient wearing the breathing interface.
2. The method of claim 1 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises sensing the carbon-dioxide level using infrared light.
3. The method of claim 1 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises emitting infrared light within the patient breathing interface.
4. The method of claim 3 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises detecting infrared light within the patient breathing interface.
5. The method of claim 3 wherein the step of emitting comprising emitting infrared light into a fiber optic cable connected to the patient breathing interface.
6. The method of claim 4 wherein the step of detecting infrared light comprising sensing the infrared light in a fiber optic cable coupled to the patient breathing interface.
7. The method of claim 1 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises sensing the carbon-dioxide level vented from the patient breathing interface.
8. The method of claim 1 further comprising the step of initiating a monostable timer if the carbon-dioxide level has crossed the threshold parameter.
9. The method of claim 8 wherein the step of decreasing the breathing gas pressure provided to the patient breathing interface after a predetermined period of time comprises decreasing the breathing gas pressure upon expiration of the monostable timer.
10. A method of providing a breathing gas to a patient comprising the steps of:

sensing a carbon-dioxide level associated with a patient breathing interface;

determining if the sensed level of carbon-dioxide is increasing or decreasing;

if the sensed carbon-dioxide level is increasing, determining if the sensed carbon-dioxide level has crossed a first threshold parameter;

if the sensed carbon-dioxide level has crossed the first threshold parameter, decreasing the breathing gas pressure provided to the patient breathing interface;

if the sensed carbon-dioxide level is decreasing, determining if the sensed carbon-dioxide level has crossed a second threshold parameter;

if the sensed carbon-dioxide level has crossed the second threshold parameter, increasing the breathing gas pressure provided to the patient breathing interface; and the increasing and decreasing of breathing gas pressure maintaining a positive pressure sufficient to sustain open the airway of a patient wearing the breathing interface.
11. The method of claim 10 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises sensing the carbon-dioxide level using infrared light.
12. The method of claim 10 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises emitting infrared light within the patient breathing interface.
13. The method of claim 12 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises detecting infrared light within the patient breathing interface.
14. The method of claim 12 wherein the step of emitting comprising emitting infrared light into a fiber optic cable coupled to the patient breathing interface.
15. The method of claim 14 wherein the step of detecting infrared light comprising sensing the infrared light in a fiber optic cable coupled to the patient breathing interface.
16. The method of claim 10 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises sensing the carbon-dioxide level vented from the patient breathing interface.
17. A method of providing a breathing gas to a patient comprising the steps of:
sensing a carbon-dioxide level associated with a patient breathing interface;
determining if the sensed level of carbon-dioxide is increasing or decreasing;
if the sensed level of carbon-dioxide is decreasing, determining whether the sensed level of carbon-dioxide at or below a threshold level;
if the sensed level of carbon-dioxide is at or below the threshold level, increasing the pressure of the breathing gas for a fixed period of time;
decreasing the pressure of the breathing gas upon expiration of the fixed period of time;
the increasing and decreasing of the pressure of the breathing gas maintaining a positive pressure sufficient to sustain open the airway of the patient.
18. The method of claim 17 wherein the step of increasing the pressure of the breathing gas for a fixed period of time comprises initiating a monostable timer.
19. The method of claim 17 wherein the step of sensing a carbon-dioxide level associated with a patient breathing interface comprises the step of sensing a carbon-dioxide level with infrared light.
20. The method of claim 19 wherein the step of sensing a carbon-dioxide level with infrared light comprises the step of sensing a carbon-dioxide level vented from the patient breathing interface.
21. A method of administering a CPAP therapy comprising the steps of:
monitoring the level of carbon-dioxide vented from a patient breathing interface;
if the level of carbon-dioxide vented is decreasing, determining of the level of carbon-dioxide is at or below a threshold value;
if the level of carbon-dioxide vented is at or below the threshold value, providing a first positive airway pressure to the patient breathing interface for a fixed period of time; and upon the expiration of the fixed period of time providing a second positive airway pressure to the patient breathing interface.
22. A system for administering a breathing gas to a patient breathing interface comprising:

(a) a blower for providing positive pressure breathing gas;
(b) a controller in circuit communication with the blower;
(c) an infrared light emitter and detector in circuit communication with the controller for detecting the level of carbon-dioxide associated with the patient breathing interface; and (d) logic for increasing and decreasing the level of the positive pressure breathing gas based on the level of carbon-dioxide detected to maintain open the airway of a patient.
23. The system of claim 22 wherein the logic for increasing and decreasing the level of the positive pressure breathing gas based on the level of carbon-dioxide associated with the patient breathing interface comprises logic for comparing the level of carbon-dioxide associated with the patient breathing interface to a threshold parameter.
24. The system of claim 22 further comprising a monostable timer having a variable off time period and predetermined on time period.
25. The system of claim 22 further comprising a optical fibers coupled to the infrared emitter and detector.
26. The system of claim 22 wherein the infrared emitter and detector are located within a housing accommodating the controller.
27. The system of claim 22 wherein the infrared emitter and detector are located within the patent breathing interface.
28. The system of claim 22 wherein the infrared emitter and detector are located proximate to a vent of the patient breathing interface.
CA002421808A 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control Expired - Fee Related CA2421808C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US23612300P 2000-09-28 2000-09-28
US60/236,123 2000-09-28
PCT/US2001/030768 WO2002026287A2 (en) 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control

Publications (2)

Publication Number Publication Date
CA2421808A1 true CA2421808A1 (en) 2002-04-04
CA2421808C CA2421808C (en) 2009-12-15

Family

ID=22888216

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002421808A Expired - Fee Related CA2421808C (en) 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control

Country Status (6)

Country Link
US (2) US6990980B2 (en)
EP (1) EP1322367A4 (en)
AU (2) AU9320301A (en)
CA (1) CA2421808C (en)
NZ (1) NZ524990A (en)
WO (1) WO2002026287A2 (en)

Families Citing this family (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU9320301A (en) 2000-09-28 2002-04-08 Invacare Corp Carbon dioxide-based bi-level cpap control
DE10139881B4 (en) * 2001-08-20 2017-06-08 Resmed R&D Germany Gmbh Apparatus for supplying a breathing gas and method for controlling the same
US7621270B2 (en) * 2003-06-23 2009-11-24 Invacare Corp. System and method for providing a breathing gas
US7152598B2 (en) * 2003-06-23 2006-12-26 Invacare Corporation System and method for providing a breathing gas
CN1886167B (en) 2003-11-25 2012-09-26 雷斯梅德有限公司 Vent system for CPAP patient interface used in treatment of sleep disordered breathing
DE102004014538A1 (en) * 2004-03-23 2005-10-13 Seleon Gmbh Method for controlling a BiLevel device and BiLevel device
US8800564B2 (en) * 2005-03-09 2014-08-12 Elaine D. Scott Tracheostomy appliances and methods for the treatment of sleep apnea syndromes
US7810497B2 (en) * 2006-03-20 2010-10-12 Ric Investments, Llc Ventilatory control system
US8069853B2 (en) * 2006-08-14 2011-12-06 Immediate Response Technologies Breath responsive powered air-purifying respirator
US20080060647A1 (en) * 2006-09-12 2008-03-13 Invacare Corporation System and method for delivering a breathing gas
US20080066751A1 (en) * 2006-09-18 2008-03-20 Invacare Corporation System and method for humidifying a breathing gas
CA2602620A1 (en) 2006-09-18 2008-03-18 Invacare Corporation Breathing gas delivery system with user feedback
DE202007004247U1 (en) * 2007-03-22 2007-05-24 Bartec Gmbh Respirator e.g. for intensive care units, has feeding arrangement to supply air to patient, discharge equipment to remove expiration air from patient and sensor to determine condensation of supplied air and or expiration air
CN101678220A (en) * 2007-04-13 2010-03-24 英瓦卡尔公司 Apparatus and method for providing positive airway pressure
CA2696773A1 (en) * 2007-08-23 2009-02-26 Invacare Corporation Method and apparatus for adjusting desired pressure in positive airway pressure devices
US20090287109A1 (en) * 2008-05-14 2009-11-19 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
US20090287120A1 (en) * 2007-12-18 2009-11-19 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
US20090287101A1 (en) * 2008-05-13 2009-11-19 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
US20090287094A1 (en) * 2008-05-15 2009-11-19 Seacrete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
US20090287191A1 (en) * 2007-12-18 2009-11-19 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
US8636670B2 (en) 2008-05-13 2014-01-28 The Invention Science Fund I, Llc Circulatory monitoring systems and methods
US9717896B2 (en) 2007-12-18 2017-08-01 Gearbox, Llc Treatment indications informed by a priori implant information
US20090292212A1 (en) * 2008-05-20 2009-11-26 Searete Llc, A Limited Corporation Of The State Of Delaware Circulatory monitoring systems and methods
CN102056539B (en) 2008-06-06 2015-10-07 柯惠有限合伙公司 For making great efforts with patient the system and method that carries out pro rata taking a breath
US8528554B2 (en) * 2008-09-04 2013-09-10 Covidien Lp Inverse sawtooth pressure wave train purging in medical ventilators
US8181648B2 (en) 2008-09-26 2012-05-22 Nellcor Puritan Bennett Llc Systems and methods for managing pressure in a breathing assistance system
US8302602B2 (en) 2008-09-30 2012-11-06 Nellcor Puritan Bennett Llc Breathing assistance system with multiple pressure sensors
EP2329232B1 (en) 2008-09-30 2012-09-19 Nellcor Puritan Bennett LLC Pneumatic tilt sensor for use with respiratory flow sensing device
US8517017B2 (en) 2009-01-08 2013-08-27 Hancock Medical, Inc. Self-contained, intermittent positive airway pressure systems and methods for treating sleep apnea, snoring, and other respiratory disorders
US8776790B2 (en) * 2009-07-16 2014-07-15 Covidien Lp Wireless, gas flow-powered sensor system for a breathing assistance system
GB0915819D0 (en) * 2009-09-10 2009-10-07 Smiths Medical Int Ltd Breathing apparatus
US8439037B2 (en) 2009-12-01 2013-05-14 Covidien Lp Exhalation valve assembly with integrated filter and flow sensor
US8469031B2 (en) * 2009-12-01 2013-06-25 Covidien Lp Exhalation valve assembly with integrated filter
US20110126832A1 (en) * 2009-12-01 2011-06-02 Nellcor Puritan Bennett Llc Exhalation Valve Assembly
US8469030B2 (en) 2009-12-01 2013-06-25 Covidien Lp Exhalation valve assembly with selectable contagious/non-contagious latch
US8439036B2 (en) 2009-12-01 2013-05-14 Covidien Lp Exhalation valve assembly with integral flow sensor
WO2011070472A1 (en) * 2009-12-07 2011-06-16 Koninklijke Philips Electronics N.V. System for providing support therapy while determining concentrations of a molecular gaseous expired by a subject receiving pressure support therapy
CN106955401B (en) 2010-03-25 2020-11-06 瑞思迈巴黎股份有限公司 Breathable gas inlet control apparatus for respiratory therapy device
USD653749S1 (en) 2010-04-27 2012-02-07 Nellcor Puritan Bennett Llc Exhalation module filter body
USD655405S1 (en) 2010-04-27 2012-03-06 Nellcor Puritan Bennett Llc Filter and valve body for an exhalation module
USD655809S1 (en) 2010-04-27 2012-03-13 Nellcor Puritan Bennett Llc Valve body with integral flow meter for an exhalation module
US8905019B2 (en) * 2010-05-11 2014-12-09 Carefusion 207, Inc. Patient circuit integrity alarm using exhaled CO2
GB201020201D0 (en) * 2010-11-30 2011-01-12 Airbus Uk Ltd Data transmission network
BR112013014676A2 (en) * 2010-12-17 2016-10-04 Koninkl Philips Electronics Nv system, method for capnographic-based breath detection and system for capnographic-based breath detection
US8327846B2 (en) 2011-02-08 2012-12-11 Hancock Medical, Inc. Positive airway pressure system with head position control
US8783250B2 (en) 2011-02-27 2014-07-22 Covidien Lp Methods and systems for transitory ventilation support
US9084859B2 (en) 2011-03-14 2015-07-21 Sleepnea Llc Energy-harvesting respiratory method and device
US8714154B2 (en) 2011-03-30 2014-05-06 Covidien Lp Systems and methods for automatic adjustment of ventilator settings
WO2012139023A2 (en) * 2011-04-06 2012-10-11 The Research Foundation Of State University Of New York Device and method for determining processing capacity
US8776792B2 (en) 2011-04-29 2014-07-15 Covidien Lp Methods and systems for volume-targeted minimum pressure-control ventilation
US9629971B2 (en) 2011-04-29 2017-04-25 Covidien Lp Methods and systems for exhalation control and trajectory optimization
US9364624B2 (en) 2011-12-07 2016-06-14 Covidien Lp Methods and systems for adaptive base flow
US9498589B2 (en) 2011-12-31 2016-11-22 Covidien Lp Methods and systems for adaptive base flow and leak compensation
US9022031B2 (en) 2012-01-31 2015-05-05 Covidien Lp Using estimated carinal pressure for feedback control of carinal pressure during ventilation
US8844526B2 (en) 2012-03-30 2014-09-30 Covidien Lp Methods and systems for triggering with unknown base flow
US10362967B2 (en) 2012-07-09 2019-07-30 Covidien Lp Systems and methods for missed breath detection and indication
WO2014078631A1 (en) * 2012-11-15 2014-05-22 The Trustees Of The University Of Pennsylvania Nasal pulsatile oxygenation and ventilation airway apparatus
US10314989B2 (en) 2013-01-28 2019-06-11 Hancock Medical, Inc. Position control devices and methods for use with positive airway pressure systems
US9492629B2 (en) 2013-02-14 2016-11-15 Covidien Lp Methods and systems for ventilation with unknown exhalation flow and exhalation pressure
US9981096B2 (en) 2013-03-13 2018-05-29 Covidien Lp Methods and systems for triggering with unknown inspiratory flow
US9950135B2 (en) 2013-03-15 2018-04-24 Covidien Lp Maintaining an exhalation valve sensor assembly
US9170193B2 (en) 2013-06-06 2015-10-27 General Electric Company Detecting coolant leaks in turbine generators
US9097657B2 (en) 2013-07-23 2015-08-04 General Electric Company Leak detection of stator liquid cooling system
US11291786B2 (en) 2014-03-11 2022-04-05 Koninklijke Philips N.V. Reducing hypercapnic respiratory failure during mechanical ventilation
US9808591B2 (en) 2014-08-15 2017-11-07 Covidien Lp Methods and systems for breath delivery synchronization
WO2016028525A1 (en) 2014-08-18 2016-02-25 Hancock Medical, Inc. Portable pap device with humidification
US9950129B2 (en) 2014-10-27 2018-04-24 Covidien Lp Ventilation triggering using change-point detection
US9925346B2 (en) 2015-01-20 2018-03-27 Covidien Lp Systems and methods for ventilation with unknown exhalation flow
USD776802S1 (en) 2015-03-06 2017-01-17 Hancock Medical, Inc. Positive airway pressure system console
US10905836B2 (en) 2015-04-02 2021-02-02 Hill-Rom Services Pte. Ltd. Manifold for respiratory device
CN108472465B (en) * 2015-12-02 2021-08-31 皇家飞利浦有限公司 Method of CO2 measurement during non-invasive ventilation
CN109310348B (en) 2016-05-19 2022-01-25 汉考克医药公司 Posture obstructive sleep apnea detection system
KR101876553B1 (en) * 2017-01-25 2018-08-02 한림대학교 산학협력단 Apparatus and method for controlling ouput of lighting source in system for measuring partial pressure of respiratory gas
EP3372988B1 (en) * 2017-03-10 2022-10-12 Sensatronic GmbH Method and device for measuring the concentration of a substance in a gaseous medium by means of absorption spectroscopy
CA3099804A1 (en) 2018-05-14 2019-11-21 Covidien Lp Systems and methods for respiratory effort detection utilizing signal distortion
US11752287B2 (en) 2018-10-03 2023-09-12 Covidien Lp Systems and methods for automatic cycling or cycling detection
US11324954B2 (en) 2019-06-28 2022-05-10 Covidien Lp Achieving smooth breathing by modified bilateral phrenic nerve pacing
US11247008B1 (en) 2020-08-05 2022-02-15 Effortless Oxygen, Llc Flow triggered gas delivery
US11318276B2 (en) 2020-08-05 2022-05-03 Effortless Oxygen, Llc Flow triggered gas delivery
US11420007B2 (en) 2020-08-05 2022-08-23 Effortless Oxygen, Llc Flow triggered gas delivery
CN116944187B (en) * 2023-09-19 2023-12-05 山西北都科技股份有限公司 Roasting is with inhaling overhead traveling crane dust collector of unloading

Family Cites Families (165)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US537213A (en) * 1895-04-09 Wind-board adjuster
US761270A (en) * 1903-10-19 1904-05-31 Joshua S Towle Rein-guard attachment for vehicles.
US3921628A (en) * 1971-08-19 1975-11-25 Philips Corp Medical ventilators
US3822698A (en) * 1973-01-22 1974-07-09 R Guy Powered air-purifying respirator helmet
DE2442589C3 (en) * 1974-09-05 1979-09-06 Draegerwerk Ag, 2400 Luebeck Arrangement for measuring the CO2 content in breathing gases
US4121578A (en) * 1976-10-04 1978-10-24 The Bendix Corporation Physiological responsive control for an oxygen regulator
US4350166A (en) * 1980-12-12 1982-09-21 Honeywell Inc. Apnea detector
DE3276924D1 (en) 1981-04-24 1987-09-17 Somed Pty Ltd Device for treating snoring sickness
US4506678A (en) * 1982-06-07 1985-03-26 Healthdyne, Inc. Patient monitor for providing respiration and electrocardiogram signals
US4713558A (en) 1982-07-09 1987-12-15 Healthdyne, Inc. Patient monitor for providing respiration and electrocardiogram signals
EP0100649B1 (en) * 1982-07-30 1989-01-18 Ronald Dunbar Rae Fluid flow regulator
EP0130707B1 (en) * 1983-06-07 1988-05-11 Racal Safety Limited Improvements in and relating to breathing apparatus
US4655213A (en) * 1983-10-06 1987-04-07 New York University Method and apparatus for the treatment of obstructive sleep apnea
US4648396A (en) * 1985-05-03 1987-03-10 Brigham And Women's Hospital Respiration detector
JPH0724099B2 (en) * 1985-08-06 1995-03-15 富士写真フイルム株式会社 Magnetic recording tape
JPH0432697Y2 (en) * 1985-12-05 1992-08-06
US4773411A (en) 1986-05-08 1988-09-27 Downs John B Method and apparatus for ventilatory therapy
US4994117A (en) * 1986-08-13 1991-02-19 Fehder Carl G Quantitative carbon dioxide detector
US4728499A (en) * 1986-08-13 1988-03-01 Fehder Carl G Carbon dioxide indicator device
US5179002A (en) * 1986-08-13 1993-01-12 Nellcor Incorporated Apparatus for determining whether respiratory gas is present in a gaseous sample
US5166075A (en) 1986-08-13 1992-11-24 Nellcor Incorporated Method for determining whether respiratory gas is present in a gaseous sample
US4817013A (en) 1986-10-17 1989-03-28 Nellcor, Inc. Multichannel gas analyzer and method of use
SE8700419D0 (en) * 1987-02-04 1987-02-04 Alfa Laval Thermal Ab STANDARD OR PRESSURE PLATE FOR A PLATE HEAT EXCHANGER
GB8704104D0 (en) * 1987-02-21 1987-03-25 Manitoba University Of Respiratory system load apparatus
US5199424A (en) 1987-06-26 1993-04-06 Sullivan Colin E Device for monitoring breathing during sleep and control of CPAP treatment that is patient controlled
US5522382A (en) * 1987-06-26 1996-06-04 Rescare Limited Device and method for treating obstructed breathing having a delay/ramp feature
US5065756A (en) 1987-12-22 1991-11-19 New York University Method and apparatus for the treatment of obstructive sleep apnea
US4821736A (en) * 1988-03-22 1989-04-18 Dale Medical Products, Inc. Head-mounted device for supporting breathing circuit tubes and sensor
GB8815179D0 (en) 1988-06-25 1988-08-03 Racal Safety Ltd Differential pressure sensor
US5124129A (en) * 1988-07-29 1992-06-23 Mallinckrodt Medical, Inc. Carbon dioxide indicator
US5094235A (en) * 1989-05-10 1992-03-10 Dragerwerk Aktiengesellschaft Anesthesia ventilating apparatus having a breathing circuit and control loops for anesthetic gas components
US5134995A (en) 1989-05-19 1992-08-04 Puritan-Bennett Corporation Inspiratory airway pressure system with admittance determining apparatus and method
DK0472664T3 (en) 1989-05-19 1999-10-11 Puritan Bennett Corp Inspiratory respiratory pressure system
US5845636A (en) 1989-05-19 1998-12-08 Puritan Bennett Corporation Method and apparatus for maintaining patient airway patency
US5259373A (en) * 1989-05-19 1993-11-09 Puritan-Bennett Corporation Inspiratory airway pressure system controlled by the detection and analysis of patient airway sounds
US5148802B1 (en) * 1989-09-22 1997-08-12 Respironics Inc Method and apparatus for maintaining airway patency to treat sleep apnea and other disorders
USRE35295E (en) 1989-09-22 1996-07-16 Respironics, Inc. Sleep apnea treatment apparatus
US5632269A (en) * 1989-09-22 1997-05-27 Respironics Inc. Breathing gas delivery method and apparatus
US5239995A (en) * 1989-09-22 1993-08-31 Respironics, Inc. Sleep apnea treatment apparatus
US5117819A (en) * 1990-09-10 1992-06-02 Healthdyne, Inc. Nasal positive pressure device
BR9005370A (en) * 1990-10-18 1992-06-16 Metal Leve Sa COOLED PUMP MANUFACTURING PROCESS
US5193544A (en) * 1991-01-31 1993-03-16 Board Of Trustees Of The Leland Stanford Junior University System for conveying gases from and to a subject's trachea and for measuring physiological parameters in vivo
EP0502270B1 (en) * 1991-03-07 1997-01-02 Hamamatsu Photonics K.K. Tissue oxygen measuring system
US5332901A (en) * 1991-03-15 1994-07-26 Li-Cor, Inc. Gas analyzing apparatus and method for simultaneous measurement of carbon dioxide and water
FI921924A (en) * 1991-05-08 1992-11-09 Nellcor Inc PORTABEL COLDIOXIDE MONITOR
US6085747A (en) * 1991-06-14 2000-07-11 Respironics, Inc. Method and apparatus for controlling sleep disorder breathing
US5203343A (en) * 1991-06-14 1993-04-20 Board Of Regents, The University Of Texas System Method and apparatus for controlling sleep disorder breathing
US5458137A (en) * 1991-06-14 1995-10-17 Respironics, Inc. Method and apparatus for controlling sleep disorder breathing
DE4133235A1 (en) * 1991-10-07 1993-04-08 Draegerwerk Ag FAN-SUPPORTED BREATHING DEVICE WITH AN ADD-ON CONTROL UNIT
US6123075A (en) * 1991-10-15 2000-09-26 Mallinckrodt, Inc. Resuscitator regulator with carbon dioxide detector
US5279289A (en) * 1991-10-15 1994-01-18 Kirk Gilbert M Resuscitator regulator with carbon dioxide detector
DE69231157T2 (en) 1991-11-14 2001-02-15 Univ Technologies Int AUTOMATIC SYSTEM FOR GENERATING CONTINUOUS POSITIVE AIRWAY PRESSURE
US5372130A (en) 1992-02-26 1994-12-13 Djs&T Limited Partnership Face mask assembly and method having a fan and replaceable filter
US5490502A (en) * 1992-05-07 1996-02-13 New York University Method and apparatus for optimizing the continuous positive airway pressure for treating obstructive sleep apnea
US5335654A (en) * 1992-05-07 1994-08-09 New York University Method and apparatus for continuous adjustment of positive airway pressure for treating obstructive sleep apnea
US5803066A (en) * 1992-05-07 1998-09-08 New York University Method and apparatus for optimizing the continuous positive airway pressure for treating obstructive sleep apnea
US5645054A (en) 1992-06-01 1997-07-08 Sleepnet Corp. Device and method for the treatment of sleep apnea syndrome
US5343878A (en) * 1992-06-08 1994-09-06 Respironics Inc. Pressure application method
FR2692152B1 (en) * 1992-06-15 1997-06-27 Pierre Medical Sa BREATHING AID, PARTICULARLY FOR TREATING SLEEP APNEA.
US5353788A (en) 1992-09-21 1994-10-11 Miles Laughton E Cardio-respiratory control and monitoring system for determining CPAP pressure for apnea treatment
US5335650A (en) * 1992-10-13 1994-08-09 Temple University - Of The Commonwealth System Of Higher Education Process control for liquid ventilation and related procedures
US5517983A (en) * 1992-12-09 1996-05-21 Puritan Bennett Corporation Compliance meter for respiratory therapy
US5438980A (en) * 1993-01-12 1995-08-08 Puritan-Bennett Corporation Inhalation/exhalation respiratory phase detection circuit
US5558638A (en) 1993-04-30 1996-09-24 Healthdyne, Inc. Patient monitor and support system
US5394882A (en) * 1993-07-21 1995-03-07 Respironics, Inc. Physiological monitoring system
EP2324765B1 (en) 1993-11-05 2015-10-07 ResMed Limited Control of CPAP treatment
US6675797B1 (en) * 1993-11-05 2004-01-13 Resmed Limited Determination of patency of the airway
DE69422900T2 (en) * 1993-12-01 2000-06-08 Resmed Ltd Continuous positive airway pressure (CPAP) device
US6237593B1 (en) * 1993-12-03 2001-05-29 Resmed Limited Estimation of flow and detection of breathing CPAP treatment
AUPM279393A0 (en) * 1993-12-03 1994-01-06 Rescare Limited Estimation of flow and detection of breathing in cpap treatment
US6932084B2 (en) 1994-06-03 2005-08-23 Ric Investments, Inc. Method and apparatus for providing positive airway pressure to a patient
US5535738A (en) * 1994-06-03 1996-07-16 Respironics, Inc. Method and apparatus for providing proportional positive airway pressure to treat sleep disordered breathing
US5794615A (en) * 1994-06-03 1998-08-18 Respironics, Inc. Method and apparatus for providing proportional positive airway pressure to treat congestive heart failure
US6105575A (en) 1994-06-03 2000-08-22 Respironics, Inc. Method and apparatus for providing positive airway pressure to a patient
US6866040B1 (en) 1994-09-12 2005-03-15 Nellcor Puritan Bennett France Developpement Pressure-controlled breathing aid
US5503146A (en) * 1994-10-26 1996-04-02 Devilbiss Health Care, Inc. Standby control for CPAP apparatus
US5551419A (en) * 1994-12-15 1996-09-03 Devilbiss Health Care, Inc. Control for CPAP apparatus
US5540219A (en) * 1995-01-26 1996-07-30 Respironics, Inc. Sleep apnea treatment apparatus
US5947115A (en) * 1995-01-26 1999-09-07 Respironics, Inc. Gas flow pressure filter
US5764795A (en) * 1995-01-26 1998-06-09 Fuji Xerox Co., Ltd. Color image processing apparatus for color matching and color matching processing method
US5537997A (en) * 1995-01-26 1996-07-23 Respironics, Inc. Sleep apnea treatment apparatus and passive humidifier for use therewith
US5558419A (en) * 1995-01-30 1996-09-24 Whirlpool Corporation Pull-out freezer floor for refrigerator and freezers
US5538000A (en) 1995-02-06 1996-07-23 Hans Rudolph, Inc. Airflow delivery system
JP3273295B2 (en) * 1995-02-23 2002-04-08 日本光電工業株式会社 Carbon dioxide concentration measurement device
US5598838A (en) 1995-04-07 1997-02-04 Healthdyne Technologies, Inc. Pressure support ventilatory assist system
AUPN236595A0 (en) * 1995-04-11 1995-05-11 Rescare Limited Monitoring of apneic arousals
AUPN344195A0 (en) 1995-06-08 1995-07-06 Rescare Limited Monitoring of oro-nasal respiration
AUPN394895A0 (en) * 1995-07-03 1995-07-27 Rescare Limited Auto-calibration of pressure transducer offset
WO1997003603A1 (en) * 1995-07-21 1997-02-06 Respironics, Inc. Method and apparatus for diode laser pulse oximetry using multifiber optical cables and disposable fiber optic probes
US6095974A (en) * 1995-07-21 2000-08-01 Respironics, Inc. Disposable fiber optic probe
JP3845736B2 (en) * 1995-09-18 2006-11-15 レスメッド・リミテッド Pressure control in CPAP treatment or assisted ventilation
AUPN616795A0 (en) * 1995-10-23 1995-11-16 Rescare Limited Ipap duration in bilevel cpap or assisted respiration treatment
US5953713A (en) * 1995-10-26 1999-09-14 Board Of Regents, The University Of Texas System Method and apparatus for treatment of sleep disorder breathing employing artificial neural network
US5865173A (en) * 1995-11-06 1999-02-02 Sunrise Medical Hhg Inc. Bilevel CPAP system with waveform control for both IPAP and EPAP
US5682878A (en) 1995-12-07 1997-11-04 Respironics, Inc. Start-up ramp system for CPAP system with multiple ramp shape selection
AUPN973596A0 (en) * 1996-05-08 1996-05-30 Resmed Limited Control of delivery pressure in cpap treatment or assisted respiration
AUPO163896A0 (en) 1996-08-14 1996-09-05 Resmed Limited Determination of respiratory airflow
US5765563A (en) 1996-08-15 1998-06-16 Nellcor Puritan Bennett Incorporated Patient monitoring system
US5694923A (en) 1996-08-30 1997-12-09 Respironics, Inc. Pressure control in a blower-based ventilator
US5701883A (en) 1996-09-03 1997-12-30 Respironics, Inc. Oxygen mixing in a blower-based ventilator
AUPO418696A0 (en) * 1996-12-12 1997-01-16 Resmed Limited A substance delivery apparatus
US5937851A (en) * 1997-02-27 1999-08-17 Respironics, Inc. Swivel device utilizing bearing clearance to allow carbon dioxide laden exhaust
US6024089A (en) * 1997-03-14 2000-02-15 Nelcor Puritan Bennett Incorporated System and method for setting and displaying ventilator alarms
US5881717A (en) * 1997-03-14 1999-03-16 Nellcor Puritan Bennett Incorporated System and method for adjustable disconnection sensitivity for disconnection and occlusion detection in a patient ventilator
US6044843A (en) * 1997-05-28 2000-04-04 Nellcor Puritan Bennett Incorporated Moisture resistant airway adapter for monitoring constituent gases
US6135106A (en) * 1997-08-22 2000-10-24 Nellcor Puritan-Bennett, Inc. CPAP pressure and flow transducer
US5954050A (en) * 1997-10-20 1999-09-21 Christopher; Kent L. System for monitoring and treating sleep disorders using a transtracheal catheter
US6142952A (en) 1997-10-29 2000-11-07 The Board Of Regents, The University Of Texas System Method and apparatus for detection and diagnosis of airway obstruction degree
US6099481A (en) * 1997-11-03 2000-08-08 Ntc Technology, Inc. Respiratory profile parameter determination method and apparatus
AUPP026997A0 (en) 1997-11-07 1997-12-04 Resmed Limited Administration of cpap treatment pressure in presence of apnea
US6017315A (en) * 1998-02-25 2000-01-25 Respironics, Inc. Patient monitor and method of using same
AUPP240198A0 (en) 1998-03-17 1998-04-09 Resmed Limited An apparatus for supplying breathable gas
US6183423B1 (en) * 1998-05-14 2001-02-06 Respironics, Inc. Breathing disorder prescreening device and method
FI981234A (en) * 1998-06-01 1999-12-02 Nokia Networks Oy Align Order
AUPP512398A0 (en) 1998-08-07 1998-09-03 Resmed Limited A control member for a valve and method for determining fluid flow rate through a valve
US6257234B1 (en) * 1998-08-21 2001-07-10 Respironics, Inc. Apparatus and method for determining respiratory mechanics of a patient and for controlling a ventilator based thereon
US6155257A (en) * 1998-10-07 2000-12-05 Cprx Llc Cardiopulmonary resuscitation ventilator and methods
US7178524B2 (en) 1998-10-30 2007-02-20 Linda Noble Nasal gas delivery system and method for use thereof
US8701664B2 (en) 1998-11-06 2014-04-22 Caradyne (R&D) Limited Apparatus and method for relieving dyspnoea
US6212435B1 (en) * 1998-11-13 2001-04-03 Respironics, Inc. Intraoral electromuscular stimulation device and method
US6269811B1 (en) * 1998-11-13 2001-08-07 Respironics, Inc. Pressure support system with a primary and a secondary gas flow and a method of using same
US6102042A (en) * 1998-12-22 2000-08-15 Respironics, Inc. Insufflation system, attachment and method
US6071237A (en) * 1999-02-19 2000-06-06 Institute Of Critical Care Medicine Device and method for assessing perfusion failure in a patient during endotracheal intubation
JP4834867B2 (en) * 1999-03-26 2011-12-14 ネルコー ピューリタン ベネット エルエルシー Cantilever device for respiratory equipment
US6347631B1 (en) 1999-11-09 2002-02-19 Mallinckrodt, Inc. Cantilever device and method for breathing devices and the like
US6467477B1 (en) 1999-03-26 2002-10-22 Respironics, Inc. Breath-based control of a therapeutic treatment
US6401713B1 (en) 1999-05-05 2002-06-11 Respironics, Inc. Apparatus and method of providing continuous positive airway pressure
SE9902180D0 (en) 1999-06-10 1999-06-10 Siemens Elema Ab Apparatus for the supply of a breathing gas
ES2243282T3 (en) 1999-06-30 2005-12-01 University Of Florida Research Foundation, Inc. FAN MONITORING SYSTEM.
US20070000494A1 (en) 1999-06-30 2007-01-04 Banner Michael J Ventilator monitor system and method of using same
US6615831B1 (en) 1999-07-02 2003-09-09 Respironics, Inc. Pressure support system and method and a pressure control valve for use in such system and method
US6644312B2 (en) 2000-03-07 2003-11-11 Resmed Limited Determining suitable ventilator settings for patients with alveolar hypoventilation during sleep
US6532956B2 (en) 2000-03-30 2003-03-18 Respironics, Inc. Parameter variation for proportional assist ventilation or proportional positive airway pressure support devices
US6837242B2 (en) 2000-04-26 2005-01-04 The University Of Manitoba Method and apparatus for determining respiratory system resistance during assisted ventilation
DE10031079A1 (en) 2000-06-30 2002-02-07 Map Gmbh Measuring patient breathing and state, correlates present respiration signals with prior reference measurements, to adjust CPAP therapy pressure accordingly
US6349724B1 (en) 2000-07-05 2002-02-26 Compumedics Sleep Pty. Ltd. Dual-pressure blower for positive air pressure device
US6435184B1 (en) 2000-09-01 2002-08-20 Tien Lu Ho Gas mask structure
US6752151B2 (en) 2000-09-25 2004-06-22 Respironics, Inc. Method and apparatus for providing variable positive airway pressure
AU9320301A (en) * 2000-09-28 2002-04-08 Invacare Corp Carbon dioxide-based bi-level cpap control
US6626175B2 (en) * 2000-10-06 2003-09-30 Respironics, Inc. Medical ventilator triggering and cycling method and mechanism
US6581595B1 (en) * 2000-11-14 2003-06-24 Sensormedics Corporation Positive airway pressure device with indirect calorimetry system
US6518733B1 (en) 2001-08-03 2003-02-11 Linear Technology Corporation Circuits and techniques for capacitor charging circuits
US7938114B2 (en) * 2001-10-12 2011-05-10 Ric Investments Llc Auto-titration bi-level pressure support system and method of using same
US7168429B2 (en) 2001-10-12 2007-01-30 Ric Investments, Llc Auto-titration pressure support system and method of using same
US6834646B2 (en) 2001-12-19 2004-12-28 Testa Technologies T.T. Ltd. Respiratory hood
US6745770B2 (en) * 2002-01-08 2004-06-08 Resmed Limited Flow diverter for controlling the pressure and flow rate in a CPAP device
US7438073B2 (en) * 2002-03-08 2008-10-21 Kaerys S.A. Air assistance apparatus for computing the airflow provided by only means of pressure sensors
US6968842B1 (en) 2002-04-03 2005-11-29 Ric Investments, Inc. Measurement of a fluid parameter in a pressure support system
US6766800B2 (en) * 2002-08-30 2004-07-27 Sensormedics Corporation Pressure regulating valve for use in continuous positive airway pressure devices
US6880544B2 (en) 2002-12-10 2005-04-19 Lang Manufacturing Company Rack oven
AU2004208574B2 (en) 2003-01-30 2007-08-30 Compumedics Limited Algorithm for automatic positive air pressure titration
US7524292B2 (en) * 2003-04-21 2009-04-28 Medtronic, Inc. Method and apparatus for detecting respiratory disturbances
US7152598B2 (en) 2003-06-23 2006-12-26 Invacare Corporation System and method for providing a breathing gas
US7621270B2 (en) 2003-06-23 2009-11-24 Invacare Corp. System and method for providing a breathing gas
WO2005007056A2 (en) 2003-07-22 2005-01-27 Zinder, Oren A respiratory aid system and method
US7118536B2 (en) * 2003-07-25 2006-10-10 Ric Investments, Llc. Apnea/hypopnea detection system and method
US7757690B2 (en) * 2003-09-18 2010-07-20 Cardiac Pacemakers, Inc. System and method for moderating a therapy delivered during sleep using physiologic data acquired during non-sleep
US8011366B2 (en) 2004-02-04 2011-09-06 Devilbiss Healthcare Llc Method for acclimating a CPAP therapy patient to prescribed pressure
US8479727B2 (en) 2004-05-04 2013-07-09 The United States Of America As Represented By The Secretary Of The Army Enhanced chemical/biological respiratory protection system
GB0505724D0 (en) * 2005-03-19 2005-04-27 Smiths Group Plc Tracheostomy tubes
US7028688B1 (en) * 2005-04-05 2006-04-18 The United States Of America As Represented By The Secretary Of The Army Operationally adaptable chemical-biological mask
CN101466429A (en) 2006-04-10 2009-06-24 艾伊欧麦德有限公司 Apparatus and methods for administration of positive airway pressure therapies
US20080060647A1 (en) * 2006-09-12 2008-03-13 Invacare Corporation System and method for delivering a breathing gas
CN101678220A (en) 2007-04-13 2010-03-24 英瓦卡尔公司 Apparatus and method for providing positive airway pressure
CA2696773A1 (en) 2007-08-23 2009-02-26 Invacare Corporation Method and apparatus for adjusting desired pressure in positive airway pressure devices

Also Published As

Publication number Publication date
EP1322367A2 (en) 2003-07-02
AU9320301A (en) 2002-04-08
EP1322367A4 (en) 2009-08-26
US20020104536A1 (en) 2002-08-08
US20050279358A1 (en) 2005-12-22
WO2002026287A3 (en) 2002-08-22
AU2001293203B2 (en) 2004-12-02
NZ524990A (en) 2005-02-25
CA2421808C (en) 2009-12-15
US6990980B2 (en) 2006-01-31
WO2002026287A2 (en) 2002-04-04
US8640701B2 (en) 2014-02-04

Similar Documents

Publication Publication Date Title
CA2421808A1 (en) Carbon dioxide-based bi-level cpap control
AU2001293203A1 (en) Carbon Dioxide-Based Bi-Level CPAP Control
US10052025B2 (en) Sensor, gas analyzer and method for measuring concentration of at least one respiratory gas component
RU2580188C2 (en) System and method for breath control
US6269811B1 (en) Pressure support system with a primary and a secondary gas flow and a method of using same
IL142228A0 (en) Method and system for intubation
NZ504595A (en) Administration of CPAP treatment pressure in presence of apnea
EP2068988A2 (en) Method and system of detecting faults in a breathing assistance device
CN101873875A (en) Methods and devices for providing inspiratory and expiratory flow relief during ventilation therapy
CN102333557A (en) The asynchronous detection of patient-ventilator
US20110277758A1 (en) Patient circuit integrity alarm using exhaled co2
GB2215216A (en) Positive pressure breathing apparatus
US10080498B1 (en) Capnography device with constant remote surveillance and notification capabilities
CN208492888U (en) A kind of humidifier condensed water alarm system and ventilator
JP2006198004A (en) Oxygen concentrator and method for controlling it
US20050092324A1 (en) Automatic ventilator for cardio pulmonary resuscitation with chest compression timer and ventilation alarms
DE50303785D1 (en) Apparatus for ventilation with control
KR102393006B1 (en) Clip type air exhaust apparatus and mask having the same
CN207286427U (en) A kind of anaesthetic circuit tourie monitor and alarm system and Anesthesia machine
EP3334341B1 (en) Automatic sampling accessory system
CN215651061U (en) Sleep quality detection device
CN216022551U (en) Trachea cannula capable of sensing end-expiratory carbon dioxide concentration
KR200216104Y1 (en) Apparatus for supplying oxygen having fragrance
JP2023543195A (en) Method and device for changing ventilation mode
CN108325039A (en) A kind of Anesthesia machine, anaesthetic circuit tourie monitor and alarm system and control method

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20120927