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US 2017/0303835 A1Published application
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.
Claims20
A method comprising:
- providing a tissue oximeter device comprising a nonvolatile memory storing simulated reflectance curves, wherein the nonvolatile memory retains the simulated reflectance curves even after the device is powered off;
- emitting light from at least one source of the tissue oximeter device into a tissue to be measured;
- receiving at a plurality of detectors of the tissue oximeter device light reflected from the tissue in response to the emitted light;
- generating, by the detectors, a plurality of detector responses from the reflected light;
- fitting the detector responses to the simulated reflectance curves stored in the nonvolatile memory to determine an absorption coefficient value for the tissue;
- calculating an oximetry value for the tissue from the absorption coefficient value;
- based on the absorption coefficient value, calculating a quality metric value for the oximetry value;
- and
- displaying, by the processor on a display of the oximeter device, the oximetry value and the quality metric value for the oximetry value.
6 more elements
A system comprising:
- an oximeter device comprising a probe tip comprises source structures and detector structures on a distal end of the device and a display proximal to the probe tip, wherein the oximeter device calculates an oxygen saturation value and a quality metric value associated with the oxygen saturation value, and displays the oxygen saturation value on the display and the quality metric value associated with the displayed oxygen saturation value, and the oximeter device is specially configured to:
- transmit light from a light source of an oximeter probe into a first tissue at a first location to be measured;
- receive light at a detector of the oximeter probe that is reflected by the first tissue in response to the transmitted light;
- determine a oxygen saturation value for the first tissue;
- calculate a quality metric value associated with the determined oxygen saturation value for the first tissue;
- and
- display the oxygen saturation value and the quality metric value associated with the displayed oxygen saturation value on the display.
4 more elements
A method comprising:
- providing a tissue oximeter device comprising a nonvolatile memory storing simulated reflectance curves, wherein the nonvolatile memory retains the simulated reflectance curves even after the device is powered off;
- emitting light from at least one source of the tissue oximeter device into a tissue to be measured;
- receiving at a plurality of detectors of the tissue oximeter device light reflected from the tissue in response to the emitted light;
- generating, by the detectors, a plurality of detector responses from the reflected light;
- fitting the detector responses to the simulated reflectance curves stored in the nonvolatile memory 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 a display of the oximeter device, the oximetry value and the second quality metric value for the oximetry value.
7 more elements
Dependencies are inferred from the claim text.