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FR2411392A1 - ELECTRONIC FLOW METER ESPECIALLY FOR BLOOD FLOW MEASUREMENT - Google Patents

ELECTRONIC FLOW METER ESPECIALLY FOR BLOOD FLOW MEASUREMENT

Info

Publication number
FR2411392A1
FR2411392A1 FR7737275A FR7737275A FR2411392A1 FR 2411392 A1 FR2411392 A1 FR 2411392A1 FR 7737275 A FR7737275 A FR 7737275A FR 7737275 A FR7737275 A FR 7737275A FR 2411392 A1 FR2411392 A1 FR 2411392A1
Authority
FR
France
Prior art keywords
electronic
sensor
needle
electronic circuit
rear part
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
FR7737275A
Other languages
French (fr)
Other versions
FR2411392B1 (en
Inventor
Derek Holding
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.)
Ebauches SA
FRANCE EBAUCHES SA
Original Assignee
Ebauches SA
FRANCE EBAUCHES SA
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 Ebauches SA, FRANCE EBAUCHES SA filed Critical Ebauches SA
Priority to FR7737275A priority Critical patent/FR2411392A1/en
Publication of FR2411392A1 publication Critical patent/FR2411392A1/en
Application granted granted Critical
Publication of FR2411392B1 publication Critical patent/FR2411392B1/fr
Granted 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
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/026—Measuring blood flow
    • A61B5/0275—Measuring blood flow using tracers, e.g. dye dilution
    • A61B5/028—Measuring blood flow using tracers, e.g. dye dilution by thermo-dilution
    • 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
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Hematology (AREA)
  • Biomedical Technology (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)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

L'INVENTION CONCERNE UN DEBITMETRE ELECTRONIQUE. LE DEBITMETRE COMPREND UNE SONDE DE DETECTION DES TRANSFERTS DE CHALEUR PAR CONVECTION A L'INTERIEUR D'UN MILIEU AMBIANT RELIE A UN CIRCUIT ELECTRONIQUE DE MESURE DES VARIATIONS DE TEMPERATURE RELEVEES. CETTE SONDE COMPORTE UNE PREMIERE AIGUILLE 2, DITE DE REFERENCE, UNIE A SA PARTIE ARRIERE D'UN CAPTEUR 5, ET UNE SECONDE AIGUILLE 3 CHAUFFEE ET MUNIE A SA PARTIE ARRIERE D'UN CAPTEUR 7 ET D'UN TRANSISTOR DE CHAUFFAGE 6, CES TROIS ELEMENTS EQUIPANT LES PARTIES ARRIERES DES DEUX AIGUILLES PRECITEES ETANT LOGES A L'INTERIEUR D'UN BOITIER 4 ET RELIES ELECTRIQUEMENT AU CIRCUIT ELECTRONIQUE PAR L'INTERMEDIAIRE D'UN CONNECTEUR 8 ET D'UN CABLE 9. APPLICATION A LA MESURE DE DEBITS SANGUINS TISSULAIRES, NOTAMMENT EN OBSTETRIQUE.THE INVENTION RELATES TO AN ELECTRONIC FLOWMETER. THE FLOWMETER INCLUDES A PROBE FOR DETECTION OF HEAT TRANSFERS BY CONVECTION INSIDE AN AMBIENT ENVIRONMENT CONNECTED TO AN ELECTRONIC CIRCUIT FOR MEASURING THE TEMPERATURE VARIATIONS TAKEN. THIS SENSOR INCLUDES A FIRST NEEDLE 2, CALLED REFERENCE, UNITE AT ITS REAR PART WITH A SENSOR 5, AND A SECOND NEEDLE 3 HEATED AND EQUIPPED AT ITS REAR PART WITH A SENSOR 7 AND A HEATING TRANSISTOR 6, THESE THREE ELEMENTS EQUIPPING THE REAR PARTS OF THE TWO ABOVE-PREVIOUS NEEDLES BEING LOCATED INSIDE A BOX 4 AND ELECTRICALLY CONNECTED TO THE ELECTRONIC CIRCUIT THROUGH A CONNECTOR 8 AND A CABLE 9. APPLICATION TO MEASURING BLOOD FLOWS TISSUE, ESPECIALLY OBSTETRIC.

FR7737275A 1977-12-09 1977-12-09 ELECTRONIC FLOW METER ESPECIALLY FOR BLOOD FLOW MEASUREMENT Granted FR2411392A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7737275A FR2411392A1 (en) 1977-12-09 1977-12-09 ELECTRONIC FLOW METER ESPECIALLY FOR BLOOD FLOW MEASUREMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7737275A FR2411392A1 (en) 1977-12-09 1977-12-09 ELECTRONIC FLOW METER ESPECIALLY FOR BLOOD FLOW MEASUREMENT

Publications (2)

Publication Number Publication Date
FR2411392A1 true FR2411392A1 (en) 1979-07-06
FR2411392B1 FR2411392B1 (en) 1980-10-17

Family

ID=9198698

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737275A Granted FR2411392A1 (en) 1977-12-09 1977-12-09 ELECTRONIC FLOW METER ESPECIALLY FOR BLOOD FLOW MEASUREMENT

Country Status (1)

Country Link
FR (1) FR2411392A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213902A1 (en) * 1982-04-15 1983-10-27 Eckart Dr.Rer.Nat. 2300 Kiel Hiss Sensor
DE3222046A1 (en) * 1982-06-11 1983-12-15 Günther Dipl.-Ing. 2201 Kollmar Weber Sensor element for calorimetric flow monitors
EP0180974A1 (en) * 1984-11-06 1986-05-14 Walter Bürkle Method and device for sensing flow velocities and/or fluxes
DE3713981A1 (en) * 1987-04-27 1988-11-17 Robert Buck HEAT TRANSFER MEASURING DEVICE, IN PARTICULAR FLOW CONTROLLER
DE3825059C1 (en) * 1987-04-27 1989-08-24 Robert 7992 Tettnang De Buck Heat transfer measuring unit, in particular a flow monitor
WO1991017703A1 (en) * 1990-05-19 1991-11-28 Cpec Corporation Apparatus and method for monitoring cardiac output
US5205293A (en) * 1991-10-30 1993-04-27 Koichi Sakurai Method of measuring surface blood flow
US5509424A (en) * 1994-01-28 1996-04-23 Aws Salim Nashef Continuous cardiac output monitoring system
DE19512111A1 (en) * 1995-04-03 1996-10-10 Ifm Electronic Gmbh Heat transfer control and / or measuring device
US5682899A (en) * 1991-05-16 1997-11-04 Ami-Med Corporation Apparatus and method for continuous cardiac output monitoring
US6913576B2 (en) 1993-08-13 2005-07-05 Thermal Technologies, Inc. Method for measuring blood flow
DE102014115305A1 (en) * 2014-10-21 2016-04-21 Endress+Hauser Flowtec Ag Thermal flowmeter

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213902A1 (en) * 1982-04-15 1983-10-27 Eckart Dr.Rer.Nat. 2300 Kiel Hiss Sensor
DE3222046A1 (en) * 1982-06-11 1983-12-15 Günther Dipl.-Ing. 2201 Kollmar Weber Sensor element for calorimetric flow monitors
EP0180974A1 (en) * 1984-11-06 1986-05-14 Walter Bürkle Method and device for sensing flow velocities and/or fluxes
DE3713981A1 (en) * 1987-04-27 1988-11-17 Robert Buck HEAT TRANSFER MEASURING DEVICE, IN PARTICULAR FLOW CONTROLLER
DE3825059C1 (en) * 1987-04-27 1989-08-24 Robert 7992 Tettnang De Buck Heat transfer measuring unit, in particular a flow monitor
WO1991017703A1 (en) * 1990-05-19 1991-11-28 Cpec Corporation Apparatus and method for monitoring cardiac output
US5682899A (en) * 1991-05-16 1997-11-04 Ami-Med Corporation Apparatus and method for continuous cardiac output monitoring
US5205293A (en) * 1991-10-30 1993-04-27 Koichi Sakurai Method of measuring surface blood flow
US6913576B2 (en) 1993-08-13 2005-07-05 Thermal Technologies, Inc. Method for measuring blood flow
US5509424A (en) * 1994-01-28 1996-04-23 Aws Salim Nashef Continuous cardiac output monitoring system
DE19512111A1 (en) * 1995-04-03 1996-10-10 Ifm Electronic Gmbh Heat transfer control and / or measuring device
WO1996031759A3 (en) * 1995-04-03 1996-11-07 Ifm Electronic Gmbh Heat transmission monitoring and/or measuring apparatus
US5848094A (en) * 1995-04-03 1998-12-08 I F M Electronic Gmbh Heat transmission monitoring and/or measuring apparatus
DE19512111C2 (en) * 1995-04-03 1999-01-07 Ifm Electronic Gmbh Heat transfer control and / or measuring device
WO1996031759A2 (en) * 1995-04-03 1996-10-10 Ifm Electronic Gmbh Heat transmission monitoring and/or measuring apparatus
DE102014115305A1 (en) * 2014-10-21 2016-04-21 Endress+Hauser Flowtec Ag Thermal flowmeter

Also Published As

Publication number Publication date
FR2411392B1 (en) 1980-10-17

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Legal Events

Date Code Title Description
ST Notification of lapse