CA2126875A1 - Respiratory calorimeter with bidirectional flow monitors - Google Patents

Respiratory calorimeter with bidirectional flow monitors

Info

Publication number
CA2126875A1
CA2126875A1 CA002126875A CA2126875A CA2126875A1 CA 2126875 A1 CA2126875 A1 CA 2126875A1 CA 002126875 A CA002126875 A CA 002126875A CA 2126875 A CA2126875 A CA 2126875A CA 2126875 A1 CA2126875 A1 CA 2126875A1
Authority
CA
Canada
Prior art keywords
carbon dioxide
flow
calorimeter
gas
bidirectional flow
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
CA002126875A
Other languages
French (fr)
Other versions
CA2126875C (en
Inventor
James R. Mault
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.)
Individual
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 CA2126875A1 publication Critical patent/CA2126875A1/en
Application granted granted Critical
Publication of CA2126875C publication Critical patent/CA2126875C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Physics & Mathematics (AREA)
  • Obesity (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Emergency Medicine (AREA)
  • Physiology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

A calorimeter for generating signals representa-tive of the oxygen consumption and carbon dioxide production of a subject over a test period (12) includes two flow sensors (48, 64) and a carbon dioxide scrub-ber (66) connected to a patient mouthpiece (60). Inter-connections (44, 46, 52, 54, 56, 58, 62) are such that the air inhaled by the subject passes through one flow me-ter end the exhaled breath passes first through the other flow meter, the carbon dioxide scrubber and then through the first flow meter. The electrical output sig-nals from the flow meters are provided to a micropro-cessor based computer (50) which integrates the vo-lume differences between the inhaled gas, and the ex-haled gas after the carbon dioxide has been removed from it, over the period of the test.
CA002126875A 1991-12-31 1992-12-29 Respiratory calorimeter with bidirectional flow monitors Expired - Fee Related CA2126875C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/814,829 1991-12-31
US07/814,829 US5178155A (en) 1988-06-29 1991-12-31 Respiratory calorimeter with bidirectional flow monitors for calculating of oxygen consumption and carbon dioxide production
PCT/US1992/011267 WO1993012719A1 (en) 1991-12-31 1992-12-29 Respiratory calorimeter with bidirectional flow monitors

Publications (2)

Publication Number Publication Date
CA2126875A1 true CA2126875A1 (en) 1993-07-08
CA2126875C CA2126875C (en) 2003-03-18

Family

ID=25216104

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002126875A Expired - Fee Related CA2126875C (en) 1991-12-31 1992-12-29 Respiratory calorimeter with bidirectional flow monitors

Country Status (6)

Country Link
US (1) US5178155A (en)
EP (1) EP0639951B1 (en)
JP (1) JP3043810B2 (en)
CA (1) CA2126875C (en)
DE (1) DE69229183T2 (en)
WO (1) WO1993012719A1 (en)

Families Citing this family (126)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5590651A (en) * 1995-01-17 1997-01-07 Temple University - Of The Commonwealth System Of Higher Education Breathable liquid elimination analysis
US5826577A (en) * 1996-01-30 1998-10-27 Bacharach, Inc. Breath gas analysis module
US5836300A (en) * 1996-03-11 1998-11-17 Mault; James R. Metabolic gas exchange and noninvasive cardiac output monitor
US6135107A (en) * 1996-03-11 2000-10-24 Mault; James R. Metabolic gas exchange and noninvasive cardiac output monitor
US5705735A (en) * 1996-08-09 1998-01-06 Medical Graphics Corporation Breath by breath nutritional requirements analyzing system
US6309360B1 (en) * 1997-03-17 2001-10-30 James R. Mault Respiratory calorimeter
DE19742153B4 (en) * 1997-09-24 2006-06-14 Siemens Ag Device for determining the energy balance of a living being based on the energy consumption and the food to be supplied or supplied
US5925831A (en) * 1997-10-18 1999-07-20 Cardiopulmonary Technologies, Inc. Respiratory air flow sensor
US5924995A (en) * 1997-11-10 1999-07-20 Meretek Diagnostics Non-invasive method for the functional assessment of infants and children with an inherited metabolic disorder
US6572561B2 (en) 1998-01-16 2003-06-03 Healthetech, Inc. Respiratory calorimeter
WO1999039637A1 (en) 1998-02-05 1999-08-12 Mault James R Metabolic calorimeter employing respiratory gas analysis
IL124901A0 (en) * 1998-06-14 1999-01-26 Tapuz Med Tech Ltd Lung function measuring device
WO2000007498A1 (en) * 1998-08-03 2000-02-17 Mault James R Method and apparatus for respiratory gas analysis employing measurement of expired gas mass
US6217524B1 (en) 1998-09-09 2001-04-17 Ntc Technology Inc. Method of continuously, non-invasively monitoring pulmonary capillary blood flow and cardiac output
US6200271B1 (en) 1998-09-09 2001-03-13 Ntc Technology Inc. Bi-directional partial re-breathing method
US6238351B1 (en) 1998-09-09 2001-05-29 Ntc Technology Inc. Method for compensating for non-metabolic changes in respiratory or blood gas profile parameters
US6059732A (en) * 1998-09-09 2000-05-09 Ntc Technology, Inc. ISO-volumetric method of measuring carbon dioxide elimination
US6042550A (en) 1998-09-09 2000-03-28 Ntc Technology, Inc. Methods of non-invasively estimating intrapulmonary shunt fraction and measuring cardiac output
US6406435B1 (en) 1998-11-17 2002-06-18 James R. Mault Method and apparatus for the non-invasive determination of cardiac output
US6517496B1 (en) 1999-05-10 2003-02-11 Healthetech, Inc. Airway-based cardiac output monitor and methods for using same
EP1202667A1 (en) 1999-08-02 2002-05-08 Healthetech, Inc. Metabolic calorimeter employing respiratory gas analysis
US6468222B1 (en) 1999-08-02 2002-10-22 Healthetech, Inc. Metabolic calorimeter employing respiratory gas analysis
US6899684B2 (en) * 1999-08-02 2005-05-31 Healthetech, Inc. Method of respiratory gas analysis using a metabolic calorimeter
US6210342B1 (en) 1999-09-08 2001-04-03 Ntc Technology, Inc. Bi-directional partial re-breathing method
EP1217942A1 (en) 1999-09-24 2002-07-03 Healthetech, Inc. Physiological monitor and associated computation, display and communication unit
JP2004513669A (en) 1999-10-08 2004-05-13 ヘルセテック　インコーポレイテッド Integrated calorie management system
US6612306B1 (en) 1999-10-13 2003-09-02 Healthetech, Inc. Respiratory nitric oxide meter
US6527711B1 (en) * 1999-10-18 2003-03-04 Bodymedia, Inc. Wearable human physiological data sensors and reporting system therefor
US6629934B2 (en) 2000-02-02 2003-10-07 Healthetech, Inc. Indirect calorimeter for medical applications
US6540689B1 (en) * 2000-02-22 2003-04-01 Ntc Technology, Inc. Methods for accurately, substantially noninvasively determining pulmonary capillary blood flow, cardiac output, and mixed venous carbon dioxide content
US7699788B2 (en) 2000-02-22 2010-04-20 Ric Investments, Llc. Noninvasive effective lung volume estimation
US6482158B2 (en) 2000-05-19 2002-11-19 Healthetech, Inc. System and method of ultrasonic mammography
US20030226695A1 (en) * 2000-05-25 2003-12-11 Mault James R. Weight control method using physical activity based parameters
WO2001093743A2 (en) * 2000-06-07 2001-12-13 Healthetech, Inc. Breath ketone analyzer
MXPA06002836A (en) 2000-06-16 2006-06-14 Bodymedia Inc System for monitoring and managing body weight and other physiological conditions including iterative and personalized planning, intervention and reporting capability.
US7689437B1 (en) 2000-06-16 2010-03-30 Bodymedia, Inc. System for monitoring health, wellness and fitness
US20060122474A1 (en) * 2000-06-16 2006-06-08 Bodymedia, Inc. Apparatus for monitoring health, wellness and fitness
US7261690B2 (en) * 2000-06-16 2007-08-28 Bodymedia, Inc. Apparatus for monitoring health, wellness and fitness
BR0111918B1 (en) * 2000-06-23 2010-11-30 apparatus for monitoring and reporting human physiological information.
AU2001287175A1 (en) * 2000-08-11 2002-02-25 Healthetech, Inc. Achieving a relaxed state
AU2001288902A1 (en) * 2000-09-07 2002-03-22 Healthetech, Inc. Portable computing apparatus particularly useful in a weight management program
US6620106B2 (en) 2000-09-29 2003-09-16 Healthetech, Inc. Indirect calorimetry system
US20020133378A1 (en) * 2000-10-13 2002-09-19 Mault James R. System and method of integrated calorie management
US6607387B2 (en) 2000-10-30 2003-08-19 Healthetech, Inc. Sensor system for diagnosing dental conditions
US20020055857A1 (en) * 2000-10-31 2002-05-09 Mault James R. Method of assisting individuals in lifestyle control programs conducive to good health
US6581595B1 (en) * 2000-11-14 2003-06-24 Sensormedics Corporation Positive airway pressure device with indirect calorimetry system
US20020138213A1 (en) * 2001-03-02 2002-09-26 Mault James R. System and method of metabolic rate measurement
US7135001B2 (en) * 2001-03-20 2006-11-14 Ric Investments, Llc Rebreathing methods including oscillating, substantially equal rebreathing and nonrebreathing periods
US20030208409A1 (en) * 2001-04-30 2003-11-06 Mault James R. Method and apparatus for diet control
US20030023181A1 (en) * 2001-07-26 2003-01-30 Mault James R. Gas analyzer of the fluorescent-film type particularly useful for respiratory analysis
US20030023180A1 (en) * 2001-07-26 2003-01-30 Mault James R. Respiratory analyzer and method for measuring changes in concentration of a gas component of a breathing gas mixture
US7291114B2 (en) * 2002-04-01 2007-11-06 Microlife Corporation System and method of determining an individualized drug administration protocol
JP2005537041A (en) * 2002-05-13 2005-12-08 スコット・ラボラトリーズ・インコーポレイテッド Transparent early detection, warning, and intervention systems and methods in medical procedures
USD478660S1 (en) 2002-07-01 2003-08-19 Healthetech, Inc. Disposable mask with sanitation insert for a respiratory analyzer
US7020508B2 (en) 2002-08-22 2006-03-28 Bodymedia, Inc. Apparatus for detecting human physiological and contextual information
US20090177068A1 (en) * 2002-10-09 2009-07-09 Stivoric John M Method and apparatus for providing derived glucose information utilizing physiological and/or contextual parameters
ES2562933T3 (en) * 2002-10-09 2016-03-09 Bodymedia, Inc. Apparatus for detecting, receiving, obtaining and presenting human physiological and contextual information
US20060142648A1 (en) * 2003-01-07 2006-06-29 Triage Data Networks Wireless, internet-based, medical diagnostic system
US20050148882A1 (en) * 2004-01-06 2005-07-07 Triage Wireless, Incc. Vital signs monitor used for conditioning a patient's response
US7182738B2 (en) 2003-04-23 2007-02-27 Marctec, Llc Patient monitoring apparatus and method for orthosis and other devices
US7878980B2 (en) 2003-06-13 2011-02-01 Treymed, Inc. Gas flow diverter for respiratory monitoring device
FR2858236B1 (en) * 2003-07-29 2006-04-28 Airox DEVICE AND METHOD FOR SUPPLYING RESPIRATORY GAS IN PRESSURE OR VOLUME
EP2319410A1 (en) * 2003-09-12 2011-05-11 BodyMedia, Inc. Apparatus for measuring heart related parameters
DK1734858T3 (en) * 2004-03-22 2014-10-20 Bodymedia Inc NON-INVASIVE TEMPERATURE MONITORING DEVICE
US20050216199A1 (en) * 2004-03-26 2005-09-29 Triage Data Networks Cuffless blood-pressure monitor and accompanying web services interface
US20050261598A1 (en) * 2004-04-07 2005-11-24 Triage Wireless, Inc. Patch sensor system for measuring vital signs
US20050228244A1 (en) * 2004-04-07 2005-10-13 Triage Wireless, Inc. Small-scale, vital-signs monitoring device, system and method
US20060009698A1 (en) * 2004-04-07 2006-01-12 Triage Wireless, Inc. Hand-held monitor for measuring vital signs
US20050228300A1 (en) * 2004-04-07 2005-10-13 Triage Data Networks Cuffless blood-pressure monitor and accompanying wireless mobile device
US20060009697A1 (en) * 2004-04-07 2006-01-12 Triage Wireless, Inc. Wireless, internet-based system for measuring vital signs from a plurality of patients in a hospital or medical clinic
US7179228B2 (en) 2004-04-07 2007-02-20 Triage Wireless, Inc. Cuffless system for measuring blood pressure
US20050228297A1 (en) * 2004-04-07 2005-10-13 Banet Matthew J Wrist-worn System for Measuring Blood Pressure
US20060084878A1 (en) * 2004-10-18 2006-04-20 Triage Wireless, Inc. Personal computer-based vital signs monitor
US7658716B2 (en) * 2004-12-07 2010-02-09 Triage Wireless, Inc. Vital signs monitor using an optical ear-based module
US20060122520A1 (en) * 2004-12-07 2006-06-08 Dr. Matthew Banet Vital sign-monitoring system with multiple optical modules
US20070142715A1 (en) * 2005-12-20 2007-06-21 Triage Wireless, Inc. Chest strap for measuring vital signs
US20070185393A1 (en) * 2006-02-03 2007-08-09 Triage Wireless, Inc. System for measuring vital signs using an optical module featuring a green light source
CA2649442A1 (en) * 2006-04-12 2007-10-25 Robert William Clarke Diagnostic device for determining particle production
US7993275B2 (en) * 2006-05-25 2011-08-09 Sotera Wireless, Inc. Bilateral device, system and method for monitoring vital signs
US9149192B2 (en) * 2006-05-26 2015-10-06 Sotera Wireless, Inc. System for measuring vital signs using bilateral pulse transit time
US8442607B2 (en) 2006-09-07 2013-05-14 Sotera Wireless, Inc. Hand-held vital signs monitor
US20080082004A1 (en) * 2006-09-08 2008-04-03 Triage Wireless, Inc. Blood pressure monitor
US8449469B2 (en) * 2006-11-10 2013-05-28 Sotera Wireless, Inc. Two-part patch sensor for monitoring vital signs
DE102007002614B4 (en) * 2007-01-12 2009-04-02 Jerichow, Ulrich, Dr. Device for monitoring, controlling and / or regulating a gas composition
US8275635B2 (en) * 2007-02-16 2012-09-25 Bodymedia, Inc. Integration of lifeotypes with devices and systems
US20080221461A1 (en) * 2007-03-05 2008-09-11 Triage Wireless, Inc. Vital sign monitor for cufflessly measuring blood pressure without using an external calibration
US20080221399A1 (en) * 2007-03-05 2008-09-11 Triage Wireless, Inc. Monitor for measuring vital signs and rendering video images
US20100130875A1 (en) * 2008-06-18 2010-05-27 Triage Wireless, Inc. Body-worn system for measuring blood pressure
US20080319327A1 (en) * 2007-06-25 2008-12-25 Triage Wireless, Inc. Body-worn sensor featuring a low-power processor and multi-sensor array for measuring blood pressure
US20090118628A1 (en) * 2007-11-01 2009-05-07 Triage Wireless, Inc. System for measuring blood pressure featuring a blood pressure cuff comprising size information
US8197417B2 (en) * 2008-03-04 2012-06-12 Medical Graphics Corporation Metabolic analyzer transducer
US8457706B2 (en) * 2008-05-16 2013-06-04 Covidien Lp Estimation of a physiological parameter using a neural network
US8302602B2 (en) 2008-09-30 2012-11-06 Nellcor Puritan Bennett Llc Breathing assistance system with multiple pressure sensors
US20100218766A1 (en) * 2009-02-27 2010-09-02 Nellcor Puritan Bennett Llc Customizable mandatory/spontaneous closed loop mode selection
US8434479B2 (en) * 2009-02-27 2013-05-07 Covidien Lp Flow rate compensation for transient thermal response of hot-wire anemometers
EP2424432B1 (en) * 2009-04-27 2016-06-08 Rostrum Medical Innovations Inc. Apparatus and method for monitoring the degree of integration between the functions of the heart and the lungs, and the therapeutic success of resuscitative interventions
WO2010143027A1 (en) * 2009-06-11 2010-12-16 Stellenbosch University A device for obtaining metabolic parameters
US8439037B2 (en) * 2009-12-01 2013-05-14 Covidien Lp Exhalation valve assembly with integrated filter and flow sensor
US20110126832A1 (en) * 2009-12-01 2011-06-02 Nellcor Puritan Bennett Llc Exhalation Valve Assembly
US8469031B2 (en) * 2009-12-01 2013-06-25 Covidien Lp Exhalation valve assembly with integrated filter
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
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
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
US9144658B2 (en) 2012-04-30 2015-09-29 Covidien Lp Minimizing imposed expiratory resistance of mechanical ventilator by optimizing exhalation valve control
US10078074B2 (en) 2013-01-22 2018-09-18 Arizona Board Of Regents On Behalf Of Arizona State University Portable metabolic analyzer system
USD731049S1 (en) 2013-03-05 2015-06-02 Covidien Lp EVQ housing of an exhalation module
USD731048S1 (en) 2013-03-08 2015-06-02 Covidien Lp EVQ diaphragm of an exhalation module
USD693001S1 (en) 2013-03-08 2013-11-05 Covidien Lp Neonate expiratory filter assembly of an exhalation module
USD692556S1 (en) 2013-03-08 2013-10-29 Covidien Lp Expiratory filter body of an exhalation module
USD731065S1 (en) 2013-03-08 2015-06-02 Covidien Lp EVQ pressure sensor filter of an exhalation module
USD736905S1 (en) 2013-03-08 2015-08-18 Covidien Lp Exhalation module EVQ housing
USD744095S1 (en) 2013-03-08 2015-11-24 Covidien Lp Exhalation module EVQ internal flow sensor
USD701601S1 (en) 2013-03-08 2014-03-25 Covidien Lp Condensate vial of an exhalation module
US9950135B2 (en) 2013-03-15 2018-04-24 Covidien Lp Maintaining an exhalation valve sensor assembly
USD775345S1 (en) 2015-04-10 2016-12-27 Covidien Lp Ventilator console
US11074994B2 (en) 2016-10-26 2021-07-27 Medrespond, Inc. System and method for synthetic interaction with user and devices
US10565897B2 (en) 2017-02-17 2020-02-18 Mindful Projects, LLC Quantitative diet tracking and analysis systems and devices
CN107485396A (en) * 2017-09-12 2017-12-19 刘立夺 A kind of tcm internal medicine clinical diagnosis detects breathing equipment
CN211213155U (en) * 2019-08-23 2020-08-11 京东方科技集团股份有限公司 Respiration monitor and respiration monitoring system
US11896767B2 (en) 2020-03-20 2024-02-13 Covidien Lp Model-driven system integration in medical ventilators
CN111707811B (en) * 2020-06-29 2022-11-29 重庆市畜牧科学院 Lamb breathing gas concentration detection device and method based on sterile environment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630798A (en) * 1953-03-10 Respiratory quotient and metabolism meter
US5179958A (en) * 1988-06-29 1993-01-19 Mault James R Respiratory calorimeter with bidirectional flow monitor
US5038792A (en) * 1988-06-29 1991-08-13 Mault James R Oxygen consumption meter
US4917108A (en) * 1988-06-29 1990-04-17 Mault James R Oxygen consumption meter
US5022406A (en) * 1988-08-01 1991-06-11 Tomlinson Harold W Module for determining diffusing capacity of the lungs for carbon monoxide and method
US5161525A (en) * 1990-05-11 1992-11-10 Puritan-Bennett Corporation System and method for flow triggering of pressure supported ventilation

Also Published As

Publication number Publication date
EP0639951B1 (en) 1999-05-12
DE69229183D1 (en) 1999-06-17
JPH07502665A (en) 1995-03-23
CA2126875C (en) 2003-03-18
DE69229183T2 (en) 2000-01-05
EP0639951A1 (en) 1995-03-01
WO1993012719A1 (en) 1993-07-08
US5178155A (en) 1993-01-12
EP0639951A4 (en) 1995-07-05
JP3043810B2 (en) 2000-05-22

Similar Documents

Publication Publication Date Title
CA2126875A1 (en) Respiratory calorimeter with bidirectional flow monitors
TW363888B (en) Respiratory calorimeter
Bates et al. Short-term effects of ozone on the lung
US6067983A (en) Method and apparatus for controlled flow sampling from the airway
Pinnington et al. The level of accuracy and agreement in measures of FEO2, FECO2 and VE between the Cosmed K4b2 portable, respiratory gas analysis system and a metabolic cart
US6645158B2 (en) Metabolic calorimeter employing respiratory gas analysis
US5179958A (en) Respiratory calorimeter with bidirectional flow monitor
US4090078A (en) Method and arrangement for determining alcohol content in the breath
US6828910B2 (en) Apparatus for monitoring gas concentrations
SE8903964L (en) DEVICE FOR STUDYING A PERSON'S LUNG FUNCTION
WO1990000034A1 (en) Oxygen consumption meter
WO2000067634A3 (en) Airway-based cardiac output monitor and methods for using same
JP2000510719A (en) Apparatus and method for remote spirometer
JPH1133119A (en) Breath circuit
CA2157093A1 (en) Disease management system
US20020052560A1 (en) Process for determining the functional residual capacity of the lungs
Jackson et al. Glottal aperture during panting with voluntary limitation of tidal volume
EP1764036B1 (en) Method for the determination of the time-delay between a main-stream ultrasonic flow sensor and a side-stream gas analyzer
CA2112382A1 (en) Oxygen consumption meter
CN208988881U (en) A kind of differential pressure generator for lung function evaluation and test
JPH0374571B2 (en)
Larsen et al. Oxygraphy in spontaneously breathing subjects
WO2000028881A3 (en) Method and apparatus for the non-invasive determination of cardiac output
STR MBERG et al. A method for measuring the C02 dead space volume in facial visors and respiratory protective devices in human subjects
SU786986A1 (en) Spirometabolimeter

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed