Systems, devices, and methods for performing trans-abdominal fetal oximetry and/or trans-abdominal fetal pulse oximetry using a fetal heartbeat signal
First Claim
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1. A system for determining a fetal hemoglobin oxygen saturation level comprising:
- a light source adapted to project light into the abdomen of a pregnant mammal toward a fetus contained therein;
a detector adapted to detect light reflected from the pregnant mammal'"'"'s abdomen and the fetus contained therein over a first time domain, convert the detected light into a reflected electronic signal, and communicate the reflected electronic signal to a processor;
the processor, the processor being configured to;
receive the reflected electronic signal from the detector;
isolate a portion of the reflected electronic signal that is reflected from the fetus, the isolation comprising;
receiving a fetal heartbeat signal for the fetus from a fetal heartbeat monitor over a second time domain, the fetal heartbeat signal indicating when, in the second time domain, a fetal heartbeat occurs;
synchronizing the reflected electronic signal and the fetal heartbeat signal over the first time domain and the second time domain; and
multiplying the synchronized reflected electronic signal by the synchronized fetal heartbeat signal;
analyze the isolated portion of the reflected electronic signal to determine a fetal hemoglobin oxygen saturation level of the fetus; and
provide an indication of the oxygen level of fetal blood to a display device.
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Abstract
Light reflected from a pregnant woman'"'"'s abdomen and fetus contained therein that has been received by a detector and converted into a reflected electronic signal may be received by a processor. A portion of the reflected electronic signal that is reflected from the fetus may be isolated and the isolated portion of the reflected electronic signal may be analyzed to determine a fetal hemoglobin oxygen saturation level of the fetus. The isolation may be achieved by synchronizing the reflected electronic signal with a fetal heartbeat signal and multiplying the synchronized reflected electronic signal by the synchronized fetal heartbeat signal.
22 Citations
28 Claims
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1. A system for determining a fetal hemoglobin oxygen saturation level comprising:
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a light source adapted to project light into the abdomen of a pregnant mammal toward a fetus contained therein; a detector adapted to detect light reflected from the pregnant mammal'"'"'s abdomen and the fetus contained therein over a first time domain, convert the detected light into a reflected electronic signal, and communicate the reflected electronic signal to a processor; the processor, the processor being configured to; receive the reflected electronic signal from the detector; isolate a portion of the reflected electronic signal that is reflected from the fetus, the isolation comprising; receiving a fetal heartbeat signal for the fetus from a fetal heartbeat monitor over a second time domain, the fetal heartbeat signal indicating when, in the second time domain, a fetal heartbeat occurs; synchronizing the reflected electronic signal and the fetal heartbeat signal over the first time domain and the second time domain; and multiplying the synchronized reflected electronic signal by the synchronized fetal heartbeat signal; analyze the isolated portion of the reflected electronic signal to determine a fetal hemoglobin oxygen saturation level of the fetus; and provide an indication of the oxygen level of fetal blood to a display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for determining a fetal hemoglobin oxygen saturation level comprising:
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receiving, by a processor, a fetal heartbeat signal from a fetal heart rate monitor and an reflected electronic signal from a detector, the reflected electronic signal corresponding to light reflected from a pregnant mammal'"'"'s abdomen and a fetus contained therein over a first time domain, wherein the reflected light has been converted, by the detector, into the reflected electronic signal; processing, by the computer, the reflected electronic signal to isolate a portion of the reflected electronic signal reflected from the fetus, the processing of the reflected electronic signal comprising; receiving a fetal heartbeat signal for the fetus over a second time domain, the fetal heartbeat signal indicating when, in the second time domain, a fetal heartbeat occurs; synchronizing the reflected electronic signal and the fetal heartbeat signal over the first time domain and the second time domain; and multiplying the synchronized reflected electronic signal by the synchronized fetal heartbeat signal; analyzing, by the computer, the portion of the reflected electronic signal reflected from the fetus to determine a fetal hemoglobin oxygen saturation level of the fetus; and facilitating, by the computer, provision of an indication of the fetal hemoglobin oxygen saturation level to an operator. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A computer for determining a fetal hemoglobin oxygen saturation level comprising:
a processor, the processor being configured to; receive a reflected electronic signal from a detector communicatively coupled to the processor, the reflected electronic signal corresponding to light reflected from a pregnant mammal'"'"'s abdomen and a fetus contained therein over a first time domain, wherein the light has been converted, by the detector, into the reflected electronic signal; isolate a portion of the reflected electronic signal that is reflected from the fetus, the isolation comprising; receiving a fetal heartbeat signal for the fetus from a fetal heartbeat monitor over a second time domain, the fetal heartbeat signal indicating when, in the second time domain, a fetal heartbeat occurs; synchronizing the reflected electronic signal and the fetal heartbeat signal over the first time domain and the second time domain; and multiplying the synchronized reflected electronic signal by the synchronized fetal heartbeat signal; analyze the isolated portion of the reflected electronic signal to determine a fetal hemoglobin oxygen saturation level of the fetus; and provide an indication of the oxygen level of fetal blood to a display device. - View Dependent Claims (26, 27, 28)
Specification