Non-invasive measurement device and method for estimating local metabolic parameters
US10653347B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Sep 26, 2014 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Aug 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/726
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for estimating a local metabolic parameter of an area of tissue of a patient. The method receives light intensities from the area of tissue in question for at least three different wavelengths selected according to the absorptive power of different types of haemoglobin, on the basis of the absorbancy values calculated using the light intensities measured for the three wavelengths. The method determines a oxyhaemoglobin concentration and a deoxyhaemoglobin concentration and estimates at least one local metabolic parameter on the basis of the calculated oxyhaemoglobin and deoxyhaemo-globin concentrations.
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