MULTI-AXIAL HEART SOUNDS AND MURMUR DETECTION FOR HEMODYNAMIC-CONDITION ASSESSMENT
First Claim
1. A vector method for monitoring a subject'"'"'s hemodynamic condition utilizing sound-based information detected exclusively by an externally anatomically-attached, stably positioned, three-orthogonal-axis accelerometer comprisingattaching a three-orthogonal-axis accelerometer in a stable position externally to a subject'"'"'s anatomy,during at least one cardiac cycle of the subject, collecting signal data from the so attached accelerometer,processing such collected data to obtain associated vector magnitude and directionality information, andanalyzing such vector magnitude and directionality information for assessment of the subject'"'"'s hemodynamic condition.
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Abstract
A vector method for monitoring a subject'"'"'s hemodynamic condition including (a) utilizing at least one, external or internal, anatomy-attached, three-axis accelerometer, collecting from the subject, during a selected cardiac cycle, related, three-orthogonal-axes accelerometer signal data, (b) following such collecting, processing collected signal data to obtain associated, signal vector, magnitude and directionality information, and (c) analyzing such obtained vector information for assessment of the subject'"'"'s heart hemodynamic condition. ECG and signal time-frequency data is also collected and used in certain manners and implementations of the invention.
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Citations
18 Claims
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1. A vector method for monitoring a subject'"'"'s hemodynamic condition utilizing sound-based information detected exclusively by an externally anatomically-attached, stably positioned, three-orthogonal-axis accelerometer comprising
attaching a three-orthogonal-axis accelerometer in a stable position externally to a subject'"'"'s anatomy, during at least one cardiac cycle of the subject, collecting signal data from the so attached accelerometer, processing such collected data to obtain associated vector magnitude and directionality information, and analyzing such vector magnitude and directionality information for assessment of the subject'"'"'s hemodynamic condition.
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11. A vector method for monitoring a subject'"'"'s hemodynamic condition based upon externally collected data relating to murmur and heart sound phenomena, collected exclusively from an externally anatomically-attached, stably positioned, three-orthogonal-axis accelerometer comprising
attaching a three-orthogonal-axis accelerometer in a stable position externally to a subject'"'"'s anatomy, during at least one cardiac cycle of the subject, collecting signal data from the so attached accelerometer, processing such collected data to obtain associated, categorically-identified, signal-vector magnitude and directionality information related, respectively, to murmur and to at least one heart sound, and analyzing such murmur, and such at least one heart sound, vector magnitude and directionality information for assessment of the subject'"'"'s hemodynamic condition.
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18. A vector method for detecting and specifically identifying and confirmation-source-locating heart sounds and murmur as an aid in assessing a subject'"'"'s hemodynamic condition comprising
attaching plural, three-orthogonal-axis accelerometers in positionally stable conditions to selected, respective, spaced, external sites on a person'"'"'s anatomy, collecting from those sites, over a time interval spanning at least one cardiac cycle of the subject, plural-source three-orthogonal-axis-accelerometer signal data, filtering such collected data in accordance with signal time-frequency information, initially processing the so filtered data to derive therefrom signal vectors and related signal time-frequency information which is believed may be associated, respectively, with the different heart sounds and with murmur, and using the derived signal vectors and signal time-frequency information, applying additional processing to determine the specific presences, identities, and confirmations of source locations, as well as relevant quantitative information, during the mentioned at least one cardiac cycle, of the different heart sounds and of murmur.
Specification