DE69412093T2 - Verfahren und vorrichtung zur messung einer strömung unter anwendung von frequenzdispersiven techniken - Google Patents

Verfahren und vorrichtung zur messung einer strömung unter anwendung von frequenzdispersiven techniken

Info

Publication number
DE69412093T2
DE69412093T2 DE69412093T DE69412093T DE69412093T2 DE 69412093 T2 DE69412093 T2 DE 69412093T2 DE 69412093 T DE69412093 T DE 69412093T DE 69412093 T DE69412093 T DE 69412093T DE 69412093 T2 DE69412093 T2 DE 69412093T2
Authority
DE
Germany
Prior art keywords
measuring
flow
frequency dispersive
dispersive techniques
techniques
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
DE69412093T
Other languages
English (en)
Other versions
DE69412093D1 (de
Inventor
Robert Dixon
Theodore Lapp
Donald Bobo
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.)
Baxter International Inc
Original Assignee
Baxter International 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 Baxter International Inc filed Critical Baxter International Inc
Application granted granted Critical
Publication of DE69412093D1 publication Critical patent/DE69412093D1/de
Publication of DE69412093T2 publication Critical patent/DE69412093T2/de
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
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7232—Signal processing specially adapted for physiological signals or for diagnostic purposes involving compression of the physiological signal, e.g. to extend the signal recording period
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7253—Details of waveform analysis characterised by using transforms
    • A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
DE69412093T 1993-06-04 1994-05-31 Verfahren und vorrichtung zur messung einer strömung unter anwendung von frequenzdispersiven techniken Expired - Lifetime DE69412093T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/071,838 US5357967A (en) 1993-06-04 1993-06-04 Method and apparatus for measuring flow using frequency-dispersive techniques
PCT/US1994/006138 WO1994028788A1 (en) 1993-06-04 1994-05-31 Method and apparatus for measuring flow using frequency-dispersive techniques

Publications (2)

Publication Number Publication Date
DE69412093D1 DE69412093D1 (de) 1998-09-03
DE69412093T2 true DE69412093T2 (de) 1999-04-22

Family

ID=22103916

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69412093T Expired - Lifetime DE69412093T2 (de) 1993-06-04 1994-05-31 Verfahren und vorrichtung zur messung einer strömung unter anwendung von frequenzdispersiven techniken

Country Status (6)

Country Link
US (1) US5357967A (de)
EP (1) EP0701413B1 (de)
JP (1) JP3456705B2 (de)
CA (1) CA2163425C (de)
DE (1) DE69412093T2 (de)
WO (1) WO1994028788A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5598847A (en) * 1994-12-28 1997-02-04 Pacesetter, Inc. Implantable flow sensor apparatus and method
US5687733A (en) * 1995-10-26 1997-11-18 Baxter International Inc. System and method for estimating cardiac output
IT1287889B1 (it) * 1996-01-19 1998-08-26 Biomedin Srl Dispositivo con piccola capacita' termica per spirometria portabile di precisione e per altre applicazioni
US5954659A (en) * 1996-02-16 1999-09-21 Curley; Michael G. Method and apparatus for invasively measuring cardiac output by detecting temperature differences of blood heated by radiation
US6010457A (en) * 1996-03-15 2000-01-04 Pmv Medical Pty Ltd Non-invasive determination of aortic flow velocity waveforms
US5971935A (en) * 1998-05-01 1999-10-26 Baxter International Inc. Methods and apparatus for reducing noise in systems using thermistor catheters to measure biological functions
US6726647B1 (en) * 1998-10-23 2004-04-27 Gambro Ab Method and device for measuring access flow
US6371923B1 (en) 1999-12-07 2002-04-16 Edwards Lifesciences Corporation Time-domain system and method for relaxation measurement and estimation of indicator dilution for continuous estimation and display of cardiac ejection fraction and end diastolic volume
US6384651B1 (en) * 2000-03-28 2002-05-07 Intel Corporation Method of generating a signal with controlled duty-cycle and pseudo-random spectrum
US20020136264A1 (en) * 2001-03-20 2002-09-26 Herleikson Earl C. Spread spectrum measurement device
WO2003071384A2 (en) * 2002-02-15 2003-08-28 Eunoe, Inc. Systems and methods for flow detection and measurement in csf shunts
FR2836831B1 (fr) * 2002-03-07 2004-06-25 Centre Nat Rech Scient Combinaison chimiotherapie et antisens de la dna demethylase
CA2514239C (en) * 2003-01-28 2012-03-20 Gambro Lundia Ab An apparatus and method for monitoring a vascular access of a patient
JP4223915B2 (ja) * 2003-10-01 2009-02-12 株式会社日立製作所 熱式流量計及び制御システム
WO2005049113A1 (en) * 2003-11-20 2005-06-02 Gambro Lundia Ab Method, apparatus and software program for measurement of a parameter relating to a heart-lung system of a mammal.
EP1691885B1 (de) * 2003-12-11 2014-04-02 Gambro Lundia AB Schaltvorrichtung und gerät zur kontrolle der strömung einer flüssigkeit
EP1896725B1 (de) * 2005-05-18 2010-09-01 Gambro Lundia AB Vorrichtung zur steuerung des blutflusses in einem extrakorporalen kreislauf
TW200835463A (en) * 2006-12-27 2008-09-01 Koninkl Philips Electronics Nv Method and apparatus for measuring fluid properties, including pH
US8353864B2 (en) 2009-02-18 2013-01-15 Davis David L Low cost disposable infusion pump
US8197235B2 (en) 2009-02-18 2012-06-12 Davis David L Infusion pump with integrated permanent magnet

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236527A (en) * 1978-10-20 1980-12-02 Massachusetts General Hospital Cardiac output detection by multiple frequency thermodilution
US4326527A (en) * 1980-05-27 1982-04-27 Kimberly-Clark Corporation Microwave heat setting of tampon
US4402230A (en) * 1981-07-17 1983-09-06 Raptis Apostolos C Method and apparatus for measuring flow velocity using matched filters
US4502488A (en) * 1983-01-13 1985-03-05 Allied Corporation Injection system
US4507974A (en) * 1983-04-21 1985-04-02 The Board Of Trustees Of The Leland Stanford Jr. University Method and apparatus for measuring flow
US4656642A (en) * 1984-04-18 1987-04-07 Sanders Associates, Inc. Spread-spectrum detection system for a multi-element antenna
US4739186A (en) * 1986-08-18 1988-04-19 Hughes Aircraft Company Frequency-selectable pulsed-sinusoid generation system
US5146414A (en) * 1990-04-18 1992-09-08 Interflo Medical, Inc. Method and apparatus for continuously measuring volumetric flow
US5217019A (en) * 1991-12-27 1993-06-08 Abbott Laboratories Apparatus and method for continuously monitoring cardiac output

Also Published As

Publication number Publication date
US5357967A (en) 1994-10-25
EP0701413A1 (de) 1996-03-20
DE69412093D1 (de) 1998-09-03
JPH08511446A (ja) 1996-12-03
EP0701413B1 (de) 1998-07-29
CA2163425C (en) 2004-07-27
JP3456705B2 (ja) 2003-10-14
CA2163425A1 (en) 1994-12-22
WO1994028788A1 (en) 1994-12-22

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