WO2007106829A3 - Automated analysis of a cardiac signal based on dynamical characteristics of the cardiac signal - Google Patents

Automated analysis of a cardiac signal based on dynamical characteristics of the cardiac signal Download PDF

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Publication number
WO2007106829A3
WO2007106829A3 PCT/US2007/063916 US2007063916W WO2007106829A3 WO 2007106829 A3 WO2007106829 A3 WO 2007106829A3 US 2007063916 W US2007063916 W US 2007063916W WO 2007106829 A3 WO2007106829 A3 WO 2007106829A3
Authority
WO
WIPO (PCT)
Prior art keywords
cardiac signal
signal
trajectory
state space
partial state
Prior art date
Application number
PCT/US2007/063916
Other languages
French (fr)
Other versions
WO2007106829A2 (en
Inventor
Michael Kremliovsky
Lev Korzinov
Original Assignee
Cardionet Inc
Michael Kremliovsky
Lev Korzinov
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 Cardionet Inc, Michael Kremliovsky, Lev Korzinov filed Critical Cardionet Inc
Priority to DK07758468.8T priority Critical patent/DK1993439T3/en
Priority to EP07758468.8A priority patent/EP1993439B1/en
Publication of WO2007106829A2 publication Critical patent/WO2007106829A2/en
Publication of WO2007106829A3 publication Critical patent/WO2007106829A3/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/361—Detecting fibrillation
    • 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
    • A61B5/7239—Details of waveform analysis using differentiation including higher order derivatives

Abstract

Systems and techniques relating to locating cardiac wave forms in a cardiac signal, and to detecting a physiological condition, such as ventricular fibrillation. In general, in one aspect, a machine-implemented method includes obtaining a sensed cardiac signal of an organism, the sensed cardiac signal comprising a time series x(t); applying a Hilbert (H) transform to the time series x(t) to obtain H(x(t)), wherein x(t) and H(x(t)) together forming a partial state space trajectory; determining a speed of trajectory, for the sensed cardiac signal, from the partial state space trajectory; and identifying physiological information concerning the organism based on a combination of first and second signal elements, the first signal element including a phase property or an amplitude property of the speed of trajectory, and the second signal element including an amplitude property of the partial state space trajectory.
PCT/US2007/063916 2006-03-14 2007-03-13 Automated analysis of a cardiac signal based on dynamical characteristics of the cardiac signal WO2007106829A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK07758468.8T DK1993439T3 (en) 2006-03-14 2007-03-13 AUTOMATED ANALYSIS OF A HEART SIGNAL BASED ON DYNAMIC CHARACTERISTICS OF THE HEART SIGNAL
EP07758468.8A EP1993439B1 (en) 2006-03-14 2007-03-13 Automated analysis of a cardiac signal based on dynamical characteristics of the cardiac signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/376,603 2006-03-14
US11/376,603 US7729753B2 (en) 2006-03-14 2006-03-14 Automated analysis of a cardiac signal based on dynamical characteristics of the cardiac signal

Publications (2)

Publication Number Publication Date
WO2007106829A2 WO2007106829A2 (en) 2007-09-20
WO2007106829A3 true WO2007106829A3 (en) 2008-05-22

Family

ID=38510246

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/063916 WO2007106829A2 (en) 2006-03-14 2007-03-13 Automated analysis of a cardiac signal based on dynamical characteristics of the cardiac signal

Country Status (4)

Country Link
US (1) US7729753B2 (en)
EP (1) EP1993439B1 (en)
DK (1) DK1993439T3 (en)
WO (1) WO2007106829A2 (en)

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WO2007106829A2 (en) 2007-09-20
EP1993439B1 (en) 2019-05-15
US7729753B2 (en) 2010-06-01
DK1993439T3 (en) 2019-08-05
US20070219453A1 (en) 2007-09-20
EP1993439A2 (en) 2008-11-26

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