ATE439088T1 - Verfahren und gerät zur verbesserung der messgenauigkeit von fliessgeschwindigkeit - Google Patents

Verfahren und gerät zur verbesserung der messgenauigkeit von fliessgeschwindigkeit

Info

Publication number
ATE439088T1
ATE439088T1 AT00916281T AT00916281T ATE439088T1 AT E439088 T1 ATE439088 T1 AT E439088T1 AT 00916281 T AT00916281 T AT 00916281T AT 00916281 T AT00916281 T AT 00916281T AT E439088 T1 ATE439088 T1 AT E439088T1
Authority
AT
Austria
Prior art keywords
transducer
accuracy
improving
speed
doppler
Prior art date
Application number
AT00916281T
Other languages
English (en)
Inventor
Gerard Hascoet
Thierry Pechoux
Original Assignee
Arrow Int Inc
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 Arrow Int Inc filed Critical Arrow Int Inc
Application granted granted Critical
Publication of ATE439088T1 publication Critical patent/ATE439088T1/de

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/06—Measuring blood flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
    • 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
    • G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/663—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by measuring Doppler frequency shift
    • 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
    • G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • 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
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/241—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by using reflection of acoustical waves, i.e. Doppler-effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/50—Systems of measurement, based on relative movement of the target
    • G01S15/58—Velocity or trajectory determination systems; Sense-of-movement determination systems

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Multimedia (AREA)
  • Hematology (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Measuring Volume Flow (AREA)
AT00916281T 1999-10-14 2000-03-10 Verfahren und gerät zur verbesserung der messgenauigkeit von fliessgeschwindigkeit ATE439088T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9912815A FR2799633B1 (fr) 1999-10-14 1999-10-14 Procede et dispositif d'amelioration de la precision de mesure d'une vitesse d'un fluide
PCT/US2000/006487 WO2001026553A1 (en) 1999-10-14 2000-03-10 A method and apparatus for improving the accuracy with which the speed of a fluid is measured

Publications (1)

Publication Number Publication Date
ATE439088T1 true ATE439088T1 (de) 2009-08-15

Family

ID=9550922

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00916281T ATE439088T1 (de) 1999-10-14 2000-03-10 Verfahren und gerät zur verbesserung der messgenauigkeit von fliessgeschwindigkeit

Country Status (9)

Country Link
US (4) US6287260B1 (de)
EP (1) EP1223864B1 (de)
JP (1) JP2003511144A (de)
AT (1) ATE439088T1 (de)
AU (1) AU3740900A (de)
CA (1) CA2386144A1 (de)
DE (1) DE60042747D1 (de)
FR (1) FR2799633B1 (de)
WO (1) WO2001026553A1 (de)

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US10413211B2 (en) 2003-02-21 2019-09-17 3Dt Holdings, Llc Systems, devices, and methods for mapping organ profiles
US10172538B2 (en) 2003-02-21 2019-01-08 3Dt Holdings, Llc Body lumen junction localization
US8784336B2 (en) 2005-08-24 2014-07-22 C. R. Bard, Inc. Stylet apparatuses and methods of manufacture
US8388546B2 (en) 2006-10-23 2013-03-05 Bard Access Systems, Inc. Method of locating the tip of a central venous catheter
US7794407B2 (en) 2006-10-23 2010-09-14 Bard Access Systems, Inc. Method of locating the tip of a central venous catheter
EP1915913B1 (de) * 2006-10-23 2015-11-18 Nestec S.A. Abstimmung von Geschmack und Aroma in Milchprodukten durch Biotransformation
US20090037201A1 (en) * 2007-08-02 2009-02-05 Patrick Michael Cravens Care Provider Online Interview System and Method
US9649048B2 (en) 2007-11-26 2017-05-16 C. R. Bard, Inc. Systems and methods for breaching a sterile field for intravascular placement of a catheter
US9521961B2 (en) 2007-11-26 2016-12-20 C. R. Bard, Inc. Systems and methods for guiding a medical instrument
US8849382B2 (en) 2007-11-26 2014-09-30 C. R. Bard, Inc. Apparatus and display methods relating to intravascular placement of a catheter
US10449330B2 (en) 2007-11-26 2019-10-22 C. R. Bard, Inc. Magnetic element-equipped needle assemblies
ES2651898T3 (es) 2007-11-26 2018-01-30 C.R. Bard Inc. Sistema integrado para la colocación intravascular de un catéter
US10524691B2 (en) 2007-11-26 2020-01-07 C. R. Bard, Inc. Needle assembly including an aligned magnetic element
US10751509B2 (en) 2007-11-26 2020-08-25 C. R. Bard, Inc. Iconic representations for guidance of an indwelling medical device
US8781555B2 (en) 2007-11-26 2014-07-15 C. R. Bard, Inc. System for placement of a catheter including a signal-generating stylet
ES2525525T3 (es) 2008-08-22 2014-12-26 C.R. Bard, Inc. Conjunto de catéter que incluye conjuntos de sensor de ECG y magnético
US8437833B2 (en) 2008-10-07 2013-05-07 Bard Access Systems, Inc. Percutaneous magnetic gastrostomy
EP3542713A1 (de) 2009-06-12 2019-09-25 Bard Access Systems, Inc. Adapter für eine katheterspitzenpositionierungsvorrichtung
US9532724B2 (en) 2009-06-12 2017-01-03 Bard Access Systems, Inc. Apparatus and method for catheter navigation using endovascular energy mapping
US9445734B2 (en) 2009-06-12 2016-09-20 Bard Access Systems, Inc. Devices and methods for endovascular electrography
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EP2575611B1 (de) 2010-05-28 2021-03-03 C. R. Bard, Inc. Vorrichtung zur verwendung mit einem nadeleinsatz-führungssystem
CA2800813C (en) 2010-05-28 2019-10-29 C.R. Bard, Inc. Apparatus for use with needle insertion guidance system
KR101856267B1 (ko) 2010-08-20 2018-05-09 씨. 알. 바드, 인크. Ecg-기반 카테터 팁 배치의 재확인
EP2632360A4 (de) 2010-10-29 2014-05-21 Bard Inc C R Bioimpedanz-gestützte platzierung einer medizinischen vorrichtung
KR20140051284A (ko) 2011-07-06 2014-04-30 씨. 알. 바드, 인크. 삽입 유도 시스템을 위한 바늘 길이 결정 및 교정
US11759268B2 (en) 2012-04-05 2023-09-19 C. R. Bard, Inc. Apparatus and methods relating to intravascular positioning of distal end of catheter
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DE102012112516A1 (de) * 2012-12-18 2014-06-18 Endress + Hauser Flowtec Ag Verfahren zur Verifizierung der Zuverlässigkeit von ermittelten Messdaten einer Ultraschall-Durchflussmessung nach der Laufzeitdifferenz-Methode und Ultraschalldurchflussmessgerät
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Also Published As

Publication number Publication date
JP2003511144A (ja) 2003-03-25
FR2799633A1 (fr) 2001-04-20
US6506159B2 (en) 2003-01-14
US20020042575A1 (en) 2002-04-11
WO2001026553A1 (en) 2001-04-19
US6287260B1 (en) 2001-09-11
DE60042747D1 (de) 2009-09-24
US6905469B2 (en) 2005-06-14
EP1223864B1 (de) 2009-08-12
AU3740900A (en) 2001-04-23
EP1223864A1 (de) 2002-07-24
US20050256408A1 (en) 2005-11-17
CA2386144A1 (en) 2001-04-19
US20030158485A1 (en) 2003-08-21
FR2799633B1 (fr) 2002-03-22
EP1223864A4 (de) 2004-08-25

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