Regional saturation system with ensemble averaging
First Claim
1. A method of ensemble averaging signals in a regional oximeter, comprising:
- receiving, at a processor, a first electromagnetic radiation signal and a second electromagnetic radiation signal from a regional oximetry sensor having two or more detectors and two or more emitters, wherein a first detector of the two or more detectors is spaced apart from the two or more emitters a first distance and a second detector of the two or more detectors is spaced apart from the two or more emitters a second distance that is greater than the first distance, wherein the first electromagnetic radiation signal is recieved by the first detector of the two or more detectors and the second electromagnetic radiation signal is received by the second detector of the two or more detectors, and wherein the first electromagnetic radiation signal and the second electromagnetic radiation signal each comprise arterial pulses and venous pulses;
receiving, at the processor, a trigger signal, wherein the trigger signal has a frequency corresponding to a periodic physical activity of a patient and wherein the trigger signal is determined from the first electromagnetic radiation signal;
generating, via the processor, one or more ensemble averaged signals based at least in part on the first and second electromagnetic radiation signals and the trigger signal;
calculating, via the processor, a regional oxygen saturation value based at least in part on the one or more ensemble averaged signals, wherein the regional oxygen saturation value corresponds to a blood oxygen saturation within venous, arterial, and capillary systems of a region of a patient'"'"'s tissue; and
displaying, via a display, the regional oxygen saturation value.
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Abstract
A method may include receiving, at a processor, a first electromagnetic radiation signal and a second electromagnetic radiation signal from a regional oximetry sensor having two or more detectors and two or more emitters. The method may also include receiving, at the processor, a trigger signal that has a frequency corresponding to a periodic physical activity of a patient. Additionally, the method may include generating, via the processor, one or more ensemble averaged signals based at least in part on the first and second electromagnetic radiation signals and the trigger signal. Further, the method may include calculating, via the processor, a regional oxygen saturation value based at least in part on the one or more ensemble averaged signals and displaying, via a display, the regional oxygen saturation value.
31 Citations
20 Claims
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1. A method of ensemble averaging signals in a regional oximeter, comprising:
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receiving, at a processor, a first electromagnetic radiation signal and a second electromagnetic radiation signal from a regional oximetry sensor having two or more detectors and two or more emitters, wherein a first detector of the two or more detectors is spaced apart from the two or more emitters a first distance and a second detector of the two or more detectors is spaced apart from the two or more emitters a second distance that is greater than the first distance, wherein the first electromagnetic radiation signal is recieved by the first detector of the two or more detectors and the second electromagnetic radiation signal is received by the second detector of the two or more detectors, and wherein the first electromagnetic radiation signal and the second electromagnetic radiation signal each comprise arterial pulses and venous pulses; receiving, at the processor, a trigger signal, wherein the trigger signal has a frequency corresponding to a periodic physical activity of a patient and wherein the trigger signal is determined from the first electromagnetic radiation signal; generating, via the processor, one or more ensemble averaged signals based at least in part on the first and second electromagnetic radiation signals and the trigger signal; calculating, via the processor, a regional oxygen saturation value based at least in part on the one or more ensemble averaged signals, wherein the regional oxygen saturation value corresponds to a blood oxygen saturation within venous, arterial, and capillary systems of a region of a patient'"'"'s tissue; and displaying, via a display, the regional oxygen saturation value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A patient monitor, comprising:
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a memory encoding one or more processor-executable routines; and a processor configured to access and execute the one or more processor-executable routines encoded by the memory, wherein the one or more processor-executable routines, when executed, cause the processor to; receive a first electromagnetic radiation signal and a second electromagnetic radiation signal from a regional oximetry sensor having two or more emitters and two or more detectors, wherein a first detector of the two or more detectors is spaced apart from the two or more emitters a first distance and a second detector of the two or more detectors is spaced apart from the two or more emitters a second distance that is greater than the first distance, wherein the first electromagnetic radiation signal is received by the first detector of the two or more detectors and the second electromagnetic radiation signal is received by the second detector of the two or more detectors, and wherein the first electromagnetic radiation signal and the second electromagnetic radiation signal each comprise arterial pulses and venous pulses; receive a first trigger signal having a first frequency corresponding to a periodic physical activity of a patient, wherein the first trigger signal is determined from the first electromagnetic radiation signal; generate one or more first ensemble averaged signals based at least in part on the first and second electromagnetic radiation signals and the first trigger signal; calculate a regional oxygen saturation value based at least in part on the one or more first ensemble averaged signals, wherein the regional oxygen saturation value corresponds to a blood oxygen saturation within venous, arterial, and capillary systems of a region of a patient'"'"'s tissue; and display the regional oxygen saturation value on a display of the patient monitor. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification