发明名称 |
Passive fetal heart rate monitoring apparatus and method with enhanced fetal heart beat discrimination |
摘要 |
An apparatus for acquiring signals emitted by a fetus, identifying fetal heart beats and determining a fetal heart rate. Multiple sensor signals are outputted by a passive fetal heart rate monitoring sensor. Multiple parallel nonlinear filters filter these multiple sensor signals to identify fetal heart beats in the signal data. A processor determines a fetal heart rate based on these identified fetal heart beats. The processor includes the use of a figure of merit weighting of heart rate estimates based on the identified heart beats from each filter for each signal. The fetal heart rate thus determined is outputted to a display, storage, or communications channel. A method for enhanced fetal heart beat discrimination includes acquiring signals from a fetus, identifying fetal heart beats from the signals by multiple parallel nonlinear filtering, and determining a fetal heart rate based on the identified fetal heart beats. A figure of merit operation in this method provides for weighting a plurality of fetal heart rate estimates based on the identified fetal heart beats and selecting the highest ranking fetal heart rate estimate.
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申请公布号 |
US5524631(A) |
申请公布日期 |
1996.06.11 |
申请号 |
US19940323943 |
申请日期 |
1994.10.13 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
ZAHORIAN, STEPHEN A.;LIVINGSTON, DAVID L.;PRETLOW, III, ROBERT A. |
分类号 |
A61B5/024;G06F17/00;(IPC1-7):A61B5/044 |
主分类号 |
A61B5/024 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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