Method for spectrophotometric blood oxygenation monitoring
First Claim
1. A method for non-invasively determining a blood oxygen parameter value of a subject'"'"'s tissue, comprising the steps of:
- providing a spectrophotometric sensor operable to transmit light into the subject'"'"'s tissue, and to sense the light;
detecting light after passage through the subject'"'"'s tissue using the sensor, and producing initial signal data from the light sensed;
calibrating the sensor to that particular subject using the initial signal data, thereby accounting for the specific physical characteristics of the particular subject'"'"'s tissue being sensed; and
subsequent to calibrating the sensor, using the calibrated sensor to determine the blood oxygen parameter value within the subject'"'"'s tissue.
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Accused Products
Abstract
According to the present invention, a method and apparatus for non-invasively determining the blood oxygen saturation level within a subject'"'"'s tissue is provided. The method includes the steps of: a) providing a spectrophotometric sensor operable to transmit light into the subject'"'"'s tissue, and to sense the light; b) detecting light after passage through the subject'"'"'s tissue using the sensor, and producing initial signal data from the light sensed; c) calibrating the sensor to that particular subject using the initial signal data, thereby accounting for the specific physical characteristics of the particular subject'"'"'s tissue being sensed; and d) using the calibrated sensor to determine the blood oxygen parameter value within the subject'"'"'s tissue.
44 Citations
14 Claims
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1. A method for non-invasively determining a blood oxygen parameter value of a subject'"'"'s tissue, comprising the steps of:
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providing a spectrophotometric sensor operable to transmit light into the subject'"'"'s tissue, and to sense the light; detecting light after passage through the subject'"'"'s tissue using the sensor, and producing initial signal data from the light sensed; calibrating the sensor to that particular subject using the initial signal data, thereby accounting for the specific physical characteristics of the particular subject'"'"'s tissue being sensed; and subsequent to calibrating the sensor, using the calibrated sensor to determine the blood oxygen parameter value within the subject'"'"'s tissue. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for non-invasively determining a blood oxygen saturation level of the microvasculature within a subject'"'"'s tissue, the apparatus comprising:
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a spectrophotometric sensor operable to transmit light into the subject'"'"'s tissue, to detect the light after passage through the subject'"'"'s tissue using the sensor, and to produce initial signal data from the light sensed; a processor adapted to calibrate the sensor to that particular subject using the initial signal data, thereby accounting for the specific physical characteristics of the particular subject'"'"'s tissue being sensed, and adapted to use the calibrated sensor to determine the blood oxygen saturation level within the subject'"'"'s tissue. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification