WO2007031769A3 - Gas sensor - Google Patents

Gas sensor Download PDF

Info

Publication number
WO2007031769A3
WO2007031769A3 PCT/GB2006/003432 GB2006003432W WO2007031769A3 WO 2007031769 A3 WO2007031769 A3 WO 2007031769A3 GB 2006003432 W GB2006003432 W GB 2006003432W WO 2007031769 A3 WO2007031769 A3 WO 2007031769A3
Authority
WO
WIPO (PCT)
Prior art keywords
target component
electrodes
gas stream
active substrate
electrode
Prior art date
Application number
PCT/GB2006/003432
Other languages
French (fr)
Other versions
WO2007031769A2 (en
Inventor
Mark Sinclair Varney
Michael Garrett
Alexandra Lindsell
Original Assignee
Anaxsys Technology Ltd
Mark Sinclair Varney
Michael Garrett
Alexandra Lindsell
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 Anaxsys Technology Ltd, Mark Sinclair Varney, Michael Garrett, Alexandra Lindsell filed Critical Anaxsys Technology Ltd
Priority to EP06779444A priority Critical patent/EP1934589A2/en
Publication of WO2007031769A2 publication Critical patent/WO2007031769A2/en
Publication of WO2007031769A3 publication Critical patent/WO2007031769A3/en

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
    • 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
    • A61B5/097—Devices for facilitating collection of breath or for directing breath into or through measuring devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Physiology (AREA)
  • Pulmonology (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • Biochemistry (AREA)
  • Emergency Medicine (AREA)
  • Obesity (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

A sensor (140) for detecting a target component in a gas stream comprises a first electrode (144) ; a second electrode (146) ; an active substrate (148) extending between the first and second electrodes, the active substrate being selective to the target component, such that the presence of the target component varies the electrical conductivity of the path between the first and second electrodes. The active substrate preferably comprises a zeolite, in particular zeolite 4A or 13X. A method of detecting a target component in a gas stream comprises contacting the gas stream with an active substrate extending between first and second electrodes; determining the variation in the electrical conductivity of the path between the first and second electrodes; and providing an indication of the presence of the target component in the gas stream. The method is particularly suitable for analyzing the carbon dioxide content of breath exhaled by a subject in the assessment of respiratory function.
PCT/GB2006/003432 2005-09-15 2006-09-15 Gas sensor WO2007031769A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06779444A EP1934589A2 (en) 2005-09-15 2006-09-15 Gas sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0518812A GB0518812D0 (en) 2005-09-15 2005-09-15 Gas sensor
GB0518812.3 2005-09-15

Publications (2)

Publication Number Publication Date
WO2007031769A2 WO2007031769A2 (en) 2007-03-22
WO2007031769A3 true WO2007031769A3 (en) 2007-06-28

Family

ID=35248809

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/003432 WO2007031769A2 (en) 2005-09-15 2006-09-15 Gas sensor

Country Status (3)

Country Link
EP (1) EP1934589A2 (en)
GB (1) GB0518812D0 (en)
WO (1) WO2007031769A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8449473B2 (en) 2006-10-18 2013-05-28 Anaxsys Technology Limited Gas sensor
GB2448323A (en) * 2007-04-10 2008-10-15 Mark Sinclair Varney Respiratory Rate Measuring Apparatus
US20100175699A1 (en) 2007-04-10 2010-07-15 Anaxsys Technology Ltd Respiratory sensor
GB0721179D0 (en) * 2007-10-30 2007-12-05 Anaxsys Technology Ltd A method of monitoring gas composition
TWI696449B (en) * 2019-07-05 2020-06-21 國立臺灣大學 Respiratory sensing device and manufacturing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044806A1 (en) * 1980-07-23 1982-01-27 Thalmond Anstalt Humidity sensor
US4347732A (en) * 1980-08-18 1982-09-07 Leary David J Gas monitoring apparatus
WO1984004595A1 (en) * 1983-05-15 1984-11-22 Thalmond Anstalt Moisture sensor
EP0856734A2 (en) * 1997-02-01 1998-08-05 DORNIER GmbH Sensor for the selective determination of ammonia in NOx containing, oxygen rich gases
DE10330742A1 (en) * 2003-07-07 2005-01-27 Daimlerchrysler Ag Exhaust gas sensor for detecting a gas component in the exhaust gas of an internal combustion engine and method for operating an exhaust gas sensor
WO2006016188A1 (en) * 2004-08-13 2006-02-16 Asthma Alert Limited Gas sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044806A1 (en) * 1980-07-23 1982-01-27 Thalmond Anstalt Humidity sensor
US4347732A (en) * 1980-08-18 1982-09-07 Leary David J Gas monitoring apparatus
WO1984004595A1 (en) * 1983-05-15 1984-11-22 Thalmond Anstalt Moisture sensor
EP0856734A2 (en) * 1997-02-01 1998-08-05 DORNIER GmbH Sensor for the selective determination of ammonia in NOx containing, oxygen rich gases
DE10330742A1 (en) * 2003-07-07 2005-01-27 Daimlerchrysler Ag Exhaust gas sensor for detecting a gas component in the exhaust gas of an internal combustion engine and method for operating an exhaust gas sensor
WO2006016188A1 (en) * 2004-08-13 2006-02-16 Asthma Alert Limited Gas sensor

Also Published As

Publication number Publication date
WO2007031769A2 (en) 2007-03-22
EP1934589A2 (en) 2008-06-25
GB0518812D0 (en) 2005-10-26

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