Tissue hydration estimation by spectral absorption bandwidth measurement
AssigneeNellcor Puritan Bennett LLC
InventorsMartin P. Debreczeny, Clark R. Baker
Life of this patent
Estimating the term…
Abstract
A system and method are provided for determining tissue hydration. Specifically, in accordance with one aspect of the present invention there is provided a method for determining tissue hydration. The method includes detecting electromagnetic radiation scattered and reflected from the living tissue and using the detected electromagnetic radiation to determine spectral absorption bandwidth. The method also includes correlating the spectral absorption bandwidth to a tissue hydration index.
Claims39
A method for determining tissue hydration comprising:
- detecting electromagnetic radiation scattered and reflected from the living tissue;
- using the detected electromagnetic radiation to determine spectral absorption bandwidth;
- and
- correlating the spectral absorption bandwidth to a tissue hydration index.
A system for measurement of living tissue comprising:
- a sensor unit configured to emit and detect electromagnetic radiation;
- and
- an hydration index unit coupled to the sensor unit and configured to determine spectral absorption bandwidth and correlate the spectral absorption bandwidth to living tissue hydration.
A method for estimating analyte concentration comprising:
- measuring the spectral absorption bandwidth of an analyte near an absorption band of the analyte, wherein measuring the spectral absorption bandwidth of the analyte comprises transmitting electromagnetic radiation into living tissue and using a photo sensitive detector to generate a photo electrical signal representative of the electromagnetic radiation detected;
- and
- correlating the spectral absorption bandwidth of the analyte to a relative concentration level of the analyte.
Dependencies are inferred from the claim text.