WO2001000087A8 - Method and apparatus for the noninvasive determination of arterial blood pressure - Google Patents

Method and apparatus for the noninvasive determination of arterial blood pressure

Info

Publication number
WO2001000087A8
WO2001000087A8 PCT/US2000/017758 US0017758W WO0100087A8 WO 2001000087 A8 WO2001000087 A8 WO 2001000087A8 US 0017758 W US0017758 W US 0017758W WO 0100087 A8 WO0100087 A8 WO 0100087A8
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
artery
time
mean
transducer
Prior art date
Application number
PCT/US2000/017758
Other languages
French (fr)
Other versions
WO2001000087A1 (en
WO2001000087A9 (en
Inventor
Gail D Baura
Original Assignee
Tensys Medical 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 Tensys Medical Inc filed Critical Tensys Medical Inc
Priority to JP2001505807A priority Critical patent/JP2003503094A/en
Priority to EP00943243A priority patent/EP1196084A1/en
Priority to AU57741/00A priority patent/AU5774100A/en
Publication of WO2001000087A1 publication Critical patent/WO2001000087A1/en
Publication of WO2001000087A9 publication Critical patent/WO2001000087A9/en
Publication of WO2001000087A8 publication Critical patent/WO2001000087A8/en

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
    • A61B5/02028—Determining haemodynamic parameters not otherwise provided for, e.g. cardiac contractility or left ventricular ejection fraction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4887—Locating particular structures in or on the body
    • A61B5/489—Blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6804—Garments; Clothes
    • A61B5/6806—Gloves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6843—Monitoring or controlling sensor contact pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/04—Measuring blood pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
    • A61B8/4227—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames characterised by straps, belts, cuffs or braces
    • 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
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
    • 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
    • A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
    • 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
    • A61B5/726—Details of waveform analysis characterised by using transforms using Wavelet transforms

Abstract

A method and apparatus for determining the mean arterial blood pressure (MAP) of a subject during tonometric conditions. In one embodiment, the apparatus comprises one or more pressure and ultrasound transducers placed over the radial artery of a human subject's wrist, the latter transmitting and receiving acoustic energy so as to permit the measurement of blood velocity during periods of variable compression of the artery. During compression, the ultrasound velocity waveforms are recorded and processed using time-frequency analysis. The time at which the mean time-frequency distribution is maximal corresponds to the time at which the transmural pressure equals zero, and the mean pressure read by the transducer equals the mean pressure within the artery. In another aspect of the invention, the ultrasound transducer is used to position the transducer over the artery such that the accuracy of the measurement is maximized. In yet another aspect of the invention, a wrist brace useful for measuring blood pressure using the aforementioned apparatus is disclosed.
PCT/US2000/017758 1999-06-29 2000-06-27 Method and apparatus for the noninvasive determination of arterial blood pressure WO2001000087A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001505807A JP2003503094A (en) 1999-06-29 2000-06-27 Non-invasive method and apparatus for determining arterial blood pressure
EP00943243A EP1196084A1 (en) 1999-06-29 2000-06-27 Method and apparatus for the noninvasive determination of arterial blood pressure
AU57741/00A AU5774100A (en) 1999-06-29 2000-06-27 Method and apparatus for the noninvasive determination of arterial blood pressure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/342,549 1999-06-29
US09/342,549 US6471655B1 (en) 1999-06-29 1999-06-29 Method and apparatus for the noninvasive determination of arterial blood pressure

Publications (3)

Publication Number Publication Date
WO2001000087A1 WO2001000087A1 (en) 2001-01-04
WO2001000087A9 WO2001000087A9 (en) 2002-07-25
WO2001000087A8 true WO2001000087A8 (en) 2003-10-23

Family

ID=23342314

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/017758 WO2001000087A1 (en) 1999-06-29 2000-06-27 Method and apparatus for the noninvasive determination of arterial blood pressure

Country Status (5)

Country Link
US (3) US6471655B1 (en)
EP (1) EP1196084A1 (en)
JP (1) JP2003503094A (en)
AU (1) AU5774100A (en)
WO (1) WO2001000087A1 (en)

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US7503896B2 (en) 2009-03-17
US6471655B1 (en) 2002-10-29
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US6514211B1 (en) 2003-02-04
WO2001000087A9 (en) 2002-07-25

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