Apparatus and method for non-invasively determining the concentration of an analyte
AssigneeRadiometer Basel AG
InventorPierre Alain GISIGER
Life of this patent
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Abstract
A sensor and an apparatus for non-invasive measurement of an analyte concentration, the apparatus comprising: a first thermal sensor operable to determine a temperature indicative of a temperature at a location on a skin of a subject, an analyte sensor operable to generate a measurement indicative of a concentration of the analyte, a heater; a controller operable to receive a temperature signal from at least the first thermal sensor and to adjust the heater to maintain a thermal equilibrium at said location on the skin; and a processor configured to convert the measurement to a calculated analyte concentration value at a predetermined temperature.
Claims19
A sensor head for an apparatus for non-invasive measurement of an analyte concentration, the sensor head comprising:
- a first thermally conductive part and a first thermal sensor disposed at the first thermally conductive part;
- the first thermally conductive part being adapted for thermally connecting with the tissue of a patient;
- the first thermal sensor being operable to determine a temperature indicative of a temperature at a location on a surface of a tissue of a patient;
- a second thermally conductive part, thermally insulated from the first thermally conductive part;
- a second thermal sensor disposed at the second thermally conductive part;
- an analyte sensor operable to generate a sensor signal indicative of a concentration of the analyte;
- and
- a heater operable to control a temperature of the second thermally conductive part.
A method for controlling a temperature of a device for non-invasive measurement of an analyte concentration in a patient, the method comprising;
- measuring a temperature of a tissue of the patient with a first temperature sensor located in a first thermally conductive part of the device, the first thermally conductive part being in thermal connection with the tissue of the patient;
- adjusting the temperature of a heating element disposed at a second thermally conductive part of the device, the second thermally conductive part being thermally insulated from the first thermally conductive part, to maintain a thermal equilibrium between the tissue and the second thermally conductive part.
Dependencies are inferred from the claim text.