METHOD AND APPARATUS FOR DETERMINING HEART RATE VARIABILITY USING WAVELET TRANSFORMATION
First Claim
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1. An apparatus for detecting and displaying a mammalian ECG waveform, comprising:
- a sensor having at least two electrodes adapted to be worn on a mammalian body, the first of said electrodes mounted to detect a first aspect of heart-related electronic signals at a first location within an equivalence region of said body, the second of said electrodes mounted to detect a second different aspect of said heart-related electronic signals at a second location within said equivalence region;
a processing facility in electronic communication with said sensor, said processing facility receiving said first aspect of said heart-related electronic signals from said first electrode and said second aspect of said heart-related electronic signals from said second electrode, said processing facility applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals, said processing facility further deriving an ECG waveform having P, Q, R, S and T components from said heart-related electronic signals utilizing a wavelet transformation analysis; and
a display device which illustrates at least one of said P and T components of said derived ECG waveform.
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Abstract
The present invention relates to advanced signal processing methods including digital wavelet transformation to analyze heart-related electronic signals and extract features that can accurately identify various states of the cardiovascular system. The invention may be utilized to estimate the extent of blood volume loss, distinguish blood volume loss from physiological activities associated with exercise, and predict the presence and extent of cardiovascular disease in general.
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Citations
39 Claims
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1. An apparatus for detecting and displaying a mammalian ECG waveform, comprising:
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a sensor having at least two electrodes adapted to be worn on a mammalian body, the first of said electrodes mounted to detect a first aspect of heart-related electronic signals at a first location within an equivalence region of said body, the second of said electrodes mounted to detect a second different aspect of said heart-related electronic signals at a second location within said equivalence region; a processing facility in electronic communication with said sensor, said processing facility receiving said first aspect of said heart-related electronic signals from said first electrode and said second aspect of said heart-related electronic signals from said second electrode, said processing facility applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals, said processing facility further deriving an ECG waveform having P, Q, R, S and T components from said heart-related electronic signals utilizing a wavelet transformation analysis; and a display device which illustrates at least one of said P and T components of said derived ECG waveform. - View Dependent Claims (2, 3, 4, 5, 6, 24)
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7. A method for detecting and displaying a mammalian ECG waveform, comprising:
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associating a sensor having at least two electrodes with the body of the mammalian individual; continuously collecting physiological data related to a first aspect of heart-related electronic signals at a first location within an equivalence region of said body, and a second different aspect of said heart-related electronic signals at a second location within said equivalence region for a period of time; applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals; deriving an ECG waveform having P, Q, R, S and T components from said heart-related electronic signals utilizing a wavelet transformation analysis; and displaying at least one of said P and T components of said derived ECG waveform. - View Dependent Claims (8, 9, 10, 11)
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12. A method for detecting and displaying a mammalian ECG waveform, comprising:
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associating a sensor having at least two electrodes with the body of the mammalian individual; continuously collecting physiological data related to a first aspect of heart-related electronic signals at a first location within an equivalence region of said body, and a second different aspect of said heart-related electronic signals at a second location within said equivalence region for a period of time; applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals; deriving an ECG waveform from said heart-related electronic signals; comparing said derived ECG waveform with a corresponding actual ECG waveform from said individual; modifying said at least one mathematical operation for defining said association of said first and second aspects of said heart-related signals with an ECG waveform to more accurately associate said heart-related aspects of said heart-related signals with an ECG waveform; applying said modified at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals; deriving an ECG waveform having P, Q, R, S and T components from said heart-related electronic signals utilizing a wavelet transformation analysis; and displaying at least one of said P and T components of said derived ECG waveform. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. An apparatus for detecting and analyzing a mammalian ECG waveform, comprising:
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a sensor having at least two electrodes adapted to be worn on the mammalian body, the first of said electrodes mounted to detect a first aspect of heart-related electronic signals at a first location within an equivalence region of said body, the second of said electrodes mounted to detect a second different aspect of said heart-related electronic signals at a second location within said equivalence region; a processing facility in electronic communication with said sensor, said processing facility receiving said first aspect of said heart-related electronic signals from said first electrode and said second aspect of said heart-related electronic signals from said second electrode, said processing facility applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals, said processing facility further deriving an ECG waveform having a plurality of repeating, recognizable wave components from said heart-related electronic signals utilizing a wavelet transformation analysis and identifying at least one time interval between said plurality of repeating, recognizable wave components; and a display device which identifies said at least one time interval. - View Dependent Claims (20, 21, 22, 23)
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25. A method for detecting and analyzing a mammalian ECG waveform, comprising:
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associating a sensor having at least two electrodes with the body of a mammalian individual; continuously collecting physiological data related to a first aspect of heart-related electronic signals at a first location within an equivalence region of said body, and a second different aspect of said heart-related electronic signals at a second location within said equivalence region for a period of time; applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals; deriving an ECG waveform having a plurality of repeating, recognizable wave components from said heart-related electronic signals utilizing a wavelet transformation analysis and identifying at least one time interval between said plurality of repeating, recognizable wave components; and reporting said at least one time interval. - View Dependent Claims (26, 27, 28, 29)
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30. A method for detecting and analyzing a mammalian ECG waveform, comprising:
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associating a sensor having at least two electrodes with the body of the mammalian individual; continuously collecting physiological data related to a first aspect of heart-related electronic signals at a first location within an equivalence region of said body, and a second different aspect of said heart-related electronic signals at a second location within said equivalence region for a period of time; applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals; deriving an ECG waveform from said heart-related electronic signals; comparing said derived ECG waveform with a corresponding actual ECG waveform from said individual; modifying said at least one mathematical operation for defining said association of said first and second aspects of said heart-related signals with an ECG waveform to more accurately associate said heart-related aspects of said heart-related signals with an ECG waveform; applying said modified at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals; deriving an ECG waveform having a plurality of repeating, recognizable wave components from said heart-related electronic signals utilizing a wavelet transformation analysis and identifying at least one time interval between said plurality of repeating, recognizable wave components; and reporting said at least one time interval. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A method for detecting and analyzing a mammalian ECG waveform, comprising:
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associating a sensor having at least two electrodes with the body of a human individual; continuously collecting physiological data related to a first aspect of heart-related electronic signals at a first location and a second different aspect of said heart-related electronic signals at a second location for a period of time; applying at least one mathematical operation defining the association of said first and second aspects of said heart-related electronic signals with an ECG waveform to said first and second aspects of said heart-related electronic signals; deriving an ECG waveform having a plurality of repeating, recognizable wave components from said heart-related electronic signals utilizing a wavelet transformation analysis and identifying at least one time interval between said plurality of repeating, recognizable wave components; accurately deriving a critical care parameter from said at least one time interval; and reporting at least one of said critical care parameter and said at least one time interval. - View Dependent Claims (37, 38, 39)
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Specification