GB2301440B - Medical airway temperature sensor - Google Patents

Medical airway temperature sensor

Info

Publication number
GB2301440B
GB2301440B GB9616513A GB9616513A GB2301440B GB 2301440 B GB2301440 B GB 2301440B GB 9616513 A GB9616513 A GB 9616513A GB 9616513 A GB9616513 A GB 9616513A GB 2301440 B GB2301440 B GB 2301440B
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
GB9616513A
Other versions
GB9616513D0 (en
GB2301440A (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 claimed from GB9322664A external-priority patent/GB2272296B/en
Publication of GB9616513D0 publication Critical patent/GB9616513D0/en
Publication of GB2301440A publication Critical patent/GB2301440A/en
Application granted granted Critical
Publication of GB2301440B publication Critical patent/GB2301440B/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
    • A61B5/0878—Measuring breath flow using temperature sensing means
    • 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
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
    • G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
GB9616513A 1992-11-04 1993-11-03 Medical airway temperature sensor Expired - Lifetime GB2301440B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ24500992 1992-11-04
GB9322664A GB2272296B (en) 1992-11-04 1993-11-03 Medical airway temperature sensor

Publications (3)

Publication Number Publication Date
GB9616513D0 GB9616513D0 (en) 1996-09-25
GB2301440A GB2301440A (en) 1996-12-04
GB2301440B true GB2301440B (en) 1997-04-16

Family

ID=26303788

Family Applications (1)

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

Country Status (1)

Country Link
GB (1) GB2301440B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6349722B1 (en) * 1997-06-17 2002-02-26 Fisher & Paykel Limited Respiratory humidification system
GB2344885A (en) * 1998-12-18 2000-06-21 Boditech Diagnostics Limited Diagnostic device
DE19960437A1 (en) * 1999-12-15 2001-07-05 Draeger Medizintech Gmbh Device and method for measuring the flow rate of a gas
IL204752A (en) * 2010-03-25 2015-08-31 Vasa Applied Technologies Ltd Method and apparatus for determining flow rates of excreted or secreted body fluids
WO2018052320A2 (en) * 2016-09-16 2018-03-22 Fisher & Paykel Healthcare Limited Thermistor flow sensor having multiple temperature points

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335605A (en) * 1980-05-14 1982-06-22 Thermal Instrument Company Mass flow meter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335605A (en) * 1980-05-14 1982-06-22 Thermal Instrument Company Mass flow meter

Also Published As

Publication number Publication date
GB9616513D0 (en) 1996-09-25
GB2301440A (en) 1996-12-04

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Legal Events

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

Expiry date: 20131102