Back to results
US 10,368,755 B2Granted
Apparatus and method for feature extraction and classification of fetal heart rate
AssigneeThe Research Foundation for The State University of New York
InventorsShishir Dash, J. Gerald Quirk, Petar Djuric
Life of this patent
Estimating the term…
Abstract
Provided are a device and method for receiving a fetal heart rate (FHR) signal at each interval during a monitoring period, receiving a uterine pressure (UP) signal at each of the intervals to obtain a plurality of FHR-UP signal pairs, and extracting a feature value for each FHR-UP signal pair, with the feature value being extracted from a predefined alphabet of feature values.
Claims10
A method for operating an electronic device, the method comprising:
- inputting, to a processor of the electronic device, a fetal heart rate (FHR);
- inputting, to the processor, a plurality of uterine pressure (UP) values corresponding to the input FHR;
- removing, by the processor, artifacts from the FHR and interpolating segments of the FHR;
- storing, by a feature extractor, time information of segments of the interpolated FHR segments;
- searching sub-segments of the stored time information to detect variability of the FHR;
- detecting excess noise in the searched sub-segments;
- obtaining a reduced noise FHR signal by removing sub-segments with detected excess noise;
- detecting a plurality of sub-segments of the reduced noise FHR signal corresponding to an average heart rate baseline;
- detecting at least two sub-segments of the plurality of sub-segments of the reduced noise FHR signal corresponding to contractions based the input plurality of UP values;
- indexing each sub-segment of the detected at least two sub-segments, wherein the indexing comprises assigning a respective feature value to each sub-segment of the detected at least two sub-segments;
- and
- outputting, to a display of the electronic device, a sequence of symbols of the respective feature value assigned to each sub-segment.
9 more elements
An electronic device for monitoring fetal health, the device comprising:
- a processor configured to receive a fetal heart rate (FHR) and a plurality of uterine pressure (UP) values corresponding to the input FHR, and remove artifacts from the FHR and interpolate segments of the FHR;
- a feature extractor configured to store time information of segments of the interpolated FHR segments;
- and
- a display,
- wherein the processor is further configured to control
- searching sub-segments of the stored time information to detect variability of the FHR,
- detecting excess noise in the searched sub-segments,
- obtaining a reduced noise FHR signal by removing the sub-segments with detected excess noise,
- detecting a plurality of sub-segments of the reduced noise FHR signal corresponding to an average heart rate baseline,
- detecting at least two sub-segments of the plurality of sub-segments of the reduced noise FHR signal corresponding to contractions based the input plurality of UP values,
- indexing each sub-segment of the detected at least two sub-segments, wherein the indexing comprises assigning a respective feature value to each sub-segment of the detected at least two sub-segments, and
- displaying, by the display, of a sequence of symbols of respective feature values assigned to each sub-segment.
9 more elements
Dependencies are inferred from the claim text.