Multi-axial heart sounds and murmur detection for hemodynamic-condition assessment
First Claim
1. A plural-external-anatomical site vector method for monitoring, exclusively externally, a subject'"'"'s hemodynamic condition utilizing, and based upon, exclusively externally collected data relating to murmur and heart sound phenomena, detected by, and collected exclusive from, plural, externally anatomically-attached, stably positioned, three-orthogonal-axis accelerometers, said method comprisingattaching at least a pair of three-orthogonal-axis accelerometers in stable, spaced positions externally to a subject'"'"'s anatomy,during at least one cardiac cycle of the subject, collecting signal data collaboratively from the so-attached, plural accelerometers,processing such collaboratively collected data to obtain vector magnitude and directionality information associated, respectively, with the least two accelerometers, andanalyzing such collaboratively collected and processed 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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10 Claims
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1. A plural-external-anatomical site vector method for monitoring, exclusively externally, a subject'"'"'s hemodynamic condition utilizing, and based upon, exclusively externally collected data relating to murmur and heart sound phenomena, detected by, and collected exclusive from, plural, externally anatomically-attached, stably positioned, three-orthogonal-axis accelerometers, said method comprising
attaching at least a pair of three-orthogonal-axis accelerometers in stable, spaced positions externally to a subject'"'"'s anatomy, during at least one cardiac cycle of the subject, collecting signal data collaboratively from the so-attached, plural accelerometers, processing such collaboratively collected data to obtain vector magnitude and directionality information associated, respectively, with the least two accelerometers, and analyzing such collaboratively collected and processed vector magnitude and directionality information for assessment of the subject'"'"'s hemodynamic condition.
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10. A computer-based system for plural, external-anatomical-site vector monitoring, externally, of a subject'"'"'s hemodynamic condition utilizing, and based upon, exclusively externally anatomically collected data relating to murmur and heart sound phenomena, detected by, and collected exclusively and collaboratively from, plural, externally anatomically-attached, stably positioned, three-orthogonal-axis accelerometers, said system, when disposed in an operative condition relative to a subject, comprising
at least a pair of three-orthogonal-axis accelerometers attached, in stable, spaced positions, externally to a subject'"'"'s anatomy at selected, classically recognized, auscultation sites on the anatomy, and signal-data-processing computer structure operatively connected to said accelerometers, possessing appropriate, signal- and data-processing computer substructures, and operable, during at least one cardiac cycle of the subject, to collect for processing, and to process, signal data collaboratively from said at least a pair of anatomy-attached accelerometers, said computer substructures including (a) band pass filter substructure substantially directly operatively connected to said accelerometers, operable to apply appropriate, band-pass frequency filtering both of (1) heart sounds that lie in the range of about 5-Hz to about 125-Hz, and (2) murmur sounds that lie in the range of about 75-Hz to about 1.5-kHz, (b) operatively connected to said band pass filter substructure, and operatively associated with one another, vector-signal-data processing substructures, including (1) spatial vector magnitude-analyzing substructure for analyzing spatial vector magnitude information, and (2) spatial vector directionality analyzing substructure for analyzing spatial vector directionality information, respectively received from said band pass filter substructure, (c) heart-sound and murmur-analysis substructure operatively connected to said spatial vector magnitude-analyzing substructure for performing heart-sound and murmur analysis, and (d) heart-sound and murmur-detection and quantification substructure operatively connected to said heart-sound and murmur-analysis substructure, and to said spatial vector directionality analyzing substructure, for performing heart-sound and murmur-detection and quantification, said computer structure and its included computer substructures this being constructed for analyzing the referred-to vector magnitude and directionality information for assessment, and an aid to assessment, of the subject'"'"'s hemodynamic condition.
Specification