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US 11,589,784 B2Granted
Determining tissue oxygen saturation with quality reporting
AssigneeViOptix, Inc.
InventorsKate LeeAnn Bechtel, Alex Michael Margiott, Jennifer Elizabeth Keating, Kimberly Merritt Shultz, Scott Coleridge, Joseph Heanue
Life of this patent
Estimating the term…
Abstract
An oximeter probe determines an oxygen saturation for the tissue and determines a quality value for the oxygen saturation and associated measurements of the tissue. The quality value is calculated from reflectance data received at the detectors of the oximeter probe. The oximeter probe then displays a value for the oxygen saturation with the error value to indicate a quality level for the oxygen saturation and associated values used to calculate oxygen saturation.
Claims21
A method comprising:
- providing an oximeter device, wherein the oximeter device is wireless and comprises a nonvolatile memory, data points for simulated reflectance curves are stored in the nonvolatile memory, and the nonvolatile memory retains the data points for the simulated reflectance curves even when the device is powered off;
- using the oximeter device, making an oxygen saturation measurement of a tissue comprising emitting light from a source of the oximeter device into the tissue, and receiving light reflected from the tissue at detectors of the oximeter device in response to the emitted light, wherein a plurality of detector responses is obtained for the reflected light;
- fitting the detector responses to the data points for the simulated reflectance curves stored in the nonvolatile memory to determine an absorption coefficient value for the tissue;
- using the absorption coefficient value, determining an oxygen saturation value for the tissue;
- calculating an error value from the fitting of the detector responses to the simulated reflectance curves, and using the error value, determining a quality metric value for the oxygen saturation value;
- and
- displaying on a screen the oxygen saturation value and the quality metric value.
4 more elements
A method comprising:
- providing an oximeter device, wherein the oximeter device is wireless and comprises a nonvolatile memory, data points for simulated reflectance curves are stored in the nonvolatile memory, and the nonvolatile memory retains the simulated reflectance curves even when the device is powered off;
- using the oximeter device, making an oximeter measurement of a tissue comprising emitting light from a source of the oximeter device into the tissue, and receiving light reflected from the tissue at detectors of the oximeter device in response to the emitted light, wherein a plurality of detector responses is obtained for the reflected light;
- fitting the detector responses to the data points for the simulated reflectance curves to determine a plurality of absorption coefficient values for the tissue for a plurality of oximeter measurements;
- calculating an oximetry value for the tissue from a first absorption coefficient value of the plurality of absorption coefficient values for a first oximeter measurement of the plurality of oximeter measurements;
- based on the first absorption coefficient value of the plurality of absorption coefficient values, calculating a first quality metric value for the oximetry value for the first oximeter measurement;
- calculating a second quality metric value based on the first quality metric value and at least a second absorption coefficient value of the plurality of absorption coefficient values for at least a second oximeter measurement;
- and
- displaying on a screen the oximetry value and the second quality metric value.
5 more elements
A method comprising:
- providing an oximeter device, wherein the oximeter device is wireless and comprises a nonvolatile memory, data points for simulated reflectance curves are stored in the nonvolatile memory, and the nonvolatile memory retains the data points for the simulated reflectance curves even when the device is powered off;
- using the oximeter device, making an oximetry measurement of a tissue comprising emitting light from a source of the oximeter device into the tissue, and receiving light reflected from the tissue at detectors of the oximeter device in response to the emitted light, wherein a plurality of detector responses is obtained for the reflected light;
- fitting the detector responses to the data points for the simulated reflectance curves stored in the nonvolatile memory to determine an absorption coefficient value for the tissue;
- based on the absorption coefficient value, calculating an oximetry value for the tissue;
- determining a quality metric value for the oximetry value;
- and
- displaying on a screen the oximetry value and the quality metric value.
4 more elements
Dependencies are inferred from the claim text.