Simultaneous measurement of pulse and regional blood oxygen saturation
First Claim
1. A method for calculating blood oxygen saturations, the method comprising:
- receiving a first light signal from an oximetry light sensor, wherein the oximetry light sensor comprises two emitters and first and second detectors and wherein the first light signal corresponds to a first mean path length through tissue of a subject from the two emitters to the first detector;
receiving a second light signal from the oximetry light sensor, wherein the second light signal corresponds to a second mean path length through tissue of the subject from the two emitters to the second detector;
calculating, using a processor, a pulse blood oxygen saturation based on at least one of the first and second light signals;
calculating, using a processor, a regional blood oxygen saturation based on the first and second light signals;
calculating, using a processor, a venous blood oxygen saturation based on the pulse blood oxygen saturation and the regional blood oxygen saturation; and
displaying, on a display, one or more of the pulse blood oxygen saturation, the regional blood oxygen saturation, and the venous blood oxygen saturation.
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Accused Products
Abstract
Methods and systems are provided that allow for the simultaneous calculation of pulse and regional blood oxygen saturation. An oximeter system that includes a sensor with a plurality of emitters and detectors may be used to calculate a pulse and/or regional blood oxygen saturation. A plurality of light signals may be emitted from light emitters. A first light signal may be received at a first light detector and a second light signal may be received at a second light detector. A pulse and/or regional blood oxygen saturation value may be calculated based on the received first and/or second light signals. The pulse and regional blood oxygen saturation values may be calculated substantially simultaneously. The calculated pulse and regional blood oxygen saturation values as well as other blood oxygen saturation values may be displayed simultaneously in a preconfigured portion of a display.
18 Citations
20 Claims
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1. A method for calculating blood oxygen saturations, the method comprising:
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receiving a first light signal from an oximetry light sensor, wherein the oximetry light sensor comprises two emitters and first and second detectors and wherein the first light signal corresponds to a first mean path length through tissue of a subject from the two emitters to the first detector; receiving a second light signal from the oximetry light sensor, wherein the second light signal corresponds to a second mean path length through tissue of the subject from the two emitters to the second detector; calculating, using a processor, a pulse blood oxygen saturation based on at least one of the first and second light signals; calculating, using a processor, a regional blood oxygen saturation based on the first and second light signals; calculating, using a processor, a venous blood oxygen saturation based on the pulse blood oxygen saturation and the regional blood oxygen saturation; and displaying, on a display, one or more of the pulse blood oxygen saturation, the regional blood oxygen saturation, and the venous blood oxygen saturation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for calculating blood oxygen saturations, the system comprising:
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an oximetry light sensor, wherein the oximetry light sensor comprises two emitters and first and second detectors; one or more processors configured for; receiving a first light signal from the oximetry light sensor, wherein the first light signal corresponds to a first mean path length through tissue of a subject from the two emitters to the first detector; receiving a second light signal from the oximetry light sensor, wherein the second light signal corresponds to a second mean path length through tissue of the subject from the two emitters to the second detector; calculating a pulse blood oxygen saturation based on at least one of the first and second light signals; calculating a regional blood oxygen saturation based on the first and second light signals; and calculating a venous blood oxygen saturation based on the pulse blood oxygen saturation and the regional blood oxygen saturation; and a display configured for displaying one or more of the pulse blood oxygen saturation, the regional blood oxygen saturation, and the venous blood oxygen saturation. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification