GB2272296B - Medical airway temperature sensor - Google Patents

Medical airway temperature sensor

Info

Publication number
GB2272296B
GB2272296B GB9322664A GB9322664A GB2272296B GB 2272296 B GB2272296 B GB 2272296B GB 9322664 A GB9322664 A GB 9322664A GB 9322664 A GB9322664 A GB 9322664A GB 2272296 B GB2272296 B GB 2272296B
Authority
GB
United Kingdom
Prior art keywords
temperature sensor
airway temperature
medical airway
medical
sensor
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.)
Expired - Lifetime
Application number
GB9322664A
Other versions
GB9322664D0 (en
GB2272296A (en
Inventor
Malcolm David Smith
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.)
Fisher and Paykel Appliances Ltd
Original Assignee
Fisher and Paykel Appliances Ltd
Fisher and Paykel Ltd
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 Fisher and Paykel Appliances Ltd, Fisher and Paykel Ltd filed Critical Fisher and Paykel Appliances Ltd
Priority to GB9616513A priority Critical patent/GB2301440B/en
Publication of GB9322664D0 publication Critical patent/GB9322664D0/en
Publication of GB2272296A publication Critical patent/GB2272296A/en
Application granted granted Critical
Publication of GB2272296B publication Critical patent/GB2272296B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61B5/087—Measuring breath flow
    • 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
    • A61B5/087—Measuring breath flow
    • A61B5/0878—Measuring breath flow using temperature sensing means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/688—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element
    • G01F1/69—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/6965—Circuits therefor, e.g. constant-current flow meters comprising means to store calibration data for flow signal calculation or correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using thermal variables

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Physiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (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)
  • Measuring Volume Flow (AREA)
GB9322664A 1992-11-04 1993-11-03 Medical airway temperature sensor Expired - Lifetime GB2272296B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9616513A GB2301440B (en) 1992-11-04 1993-11-03 Medical airway temperature sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ24500992 1992-11-04

Publications (3)

Publication Number Publication Date
GB9322664D0 GB9322664D0 (en) 1993-12-22
GB2272296A GB2272296A (en) 1994-05-11
GB2272296B true GB2272296B (en) 1997-04-16

Family

ID=19924171

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9322664A Expired - Lifetime GB2272296B (en) 1992-11-04 1993-11-03 Medical airway temperature sensor

Country Status (1)

Country Link
GB (1) GB2272296B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19512111C2 (en) * 1995-04-03 1999-01-07 Ifm Electronic Gmbh Heat transfer control and / or measuring device
IT1284486B1 (en) * 1996-09-06 1998-05-21 De Longhi Spa PROCEDURE AND DEVICE FOR THE DETECTION OF A GASEOUS CURRENT
CA2619893C (en) 1997-06-17 2011-11-15 Fisher & Paykel Healthcare Limited Respiratory humidification system
DE102008024123B3 (en) 2008-05-17 2009-11-19 Dräger Medical AG & Co. KG Connection component for a breathing tube with a sensor for measuring the gas flow
GB201102942D0 (en) 2011-02-21 2011-04-06 Intersurgical Ag Improvements related to respiratory apparatus
ITCO20120067A1 (en) 2012-12-20 2014-06-21 Nuovo Pignone Srl MEASUREMENT OF TOTAL PRESSURE AND TOTAL TEMPERATURE IN THE CONDITION OF HUMID GAS
USD742507S1 (en) 2013-01-22 2015-11-03 Intersurgical Ag Sensor with connector for resiratory circuit
AU2017326905B2 (en) * 2016-09-16 2023-04-27 Fisher & Paykel Healthcare Limited Thermistor flow sensor having multiple temperature points
US20210325260A1 (en) * 2020-04-17 2021-10-21 Telligent Metrics LLC Thermistor based respiration measurement
CN112461294A (en) * 2020-09-14 2021-03-09 湖南明康中锦医疗科技发展有限公司 Temperature and humidity sensor mounting structure and breathing support equipment

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304129A (en) * 1978-11-13 1981-12-08 Nippon Soken, Inc. Gas flow measuring apparatus
US4335605A (en) * 1980-05-14 1982-06-22 Thermal Instrument Company Mass flow meter
GB2143951A (en) * 1983-07-20 1985-02-20 Bosch Gmbh Robert Flow rate measuring means
US4501145A (en) * 1981-07-13 1985-02-26 Battelle Memorial Institute Immersion thermal exchange parameter determination
US4709581A (en) * 1984-09-07 1987-12-01 Hitachi, Ltd. Air flow meter
US4805452A (en) * 1985-12-04 1989-02-21 Degusa Aktiengesellschaft Device for the thermal measurement of the mass flow gases and liquids
US4911008A (en) * 1988-10-03 1990-03-27 Allied-Signal Inc. Hot film anemometer
US5060511A (en) * 1989-03-31 1991-10-29 Aisan Kogyo Kabushiki Kaisha Intake air quantity measuring apparatus
WO1992001940A1 (en) * 1990-07-17 1992-02-06 Noren Bengt Method and device for flow rate measurement

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304129A (en) * 1978-11-13 1981-12-08 Nippon Soken, Inc. Gas flow measuring apparatus
US4335605A (en) * 1980-05-14 1982-06-22 Thermal Instrument Company Mass flow meter
US4501145A (en) * 1981-07-13 1985-02-26 Battelle Memorial Institute Immersion thermal exchange parameter determination
GB2143951A (en) * 1983-07-20 1985-02-20 Bosch Gmbh Robert Flow rate measuring means
US4709581A (en) * 1984-09-07 1987-12-01 Hitachi, Ltd. Air flow meter
US4805452A (en) * 1985-12-04 1989-02-21 Degusa Aktiengesellschaft Device for the thermal measurement of the mass flow gases and liquids
US4911008A (en) * 1988-10-03 1990-03-27 Allied-Signal Inc. Hot film anemometer
US5060511A (en) * 1989-03-31 1991-10-29 Aisan Kogyo Kabushiki Kaisha Intake air quantity measuring apparatus
WO1992001940A1 (en) * 1990-07-17 1992-02-06 Noren Bengt Method and device for flow rate measurement

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"An electronically switched flow-meter and temperature sensor etc." pp 108-111 *
Journal of Physics, E, Scientific Instruments vol.21(1988) (Bristol UK) I.M.Katz & E.J.Shaughnessy *

Also Published As

Publication number Publication date
GB9322664D0 (en) 1993-12-22
GB2272296A (en) 1994-05-11

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20131102