MULTIPLE WAVELENGTH PHYSIOLOGICAL MEASURING APPARATUS, SENSOR AND INTERFACE UNIT FOR DETERMINATION OF BLOOD PARAMETERS
First Claim
1. A measuring apparatus for determining the amount of at least one substance in blood of a subject, the measuring apparatus comprising:
- a sensor unit comprisingan emitter unit comprising a first plurality of emitter elements configured to emit radiation at a second plurality of wavelengths; and
a detector unit configured to receive radiation generated by the emitter unit and transmitted through tissue of a subject, wherein the detector unit is further configured to produce measurement signals indicative of absorption caused by blood of the subject;
a first memory storing sensor-specific information about the sensor unit, wherein the sensor-specific information includes at least calibration data for calibrating the apparatus for a selected measurement mode that corresponds to a given combination of wavelengths; and
a sensor ability maintenance unit configured to perform a sensor ability update process in which at least part of the sensor-specific information is updated, thereby to update ability of the sensor unit to operate in the selected measurement mode.
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Abstract
A measuring apparatus, a physiological sensor, and an interface unit for determining blood parameters of a subject are disclosed. The sensor comprises an emitter unit comprising a first plurality of emitter elements configured to emit radiation at a second plurality of wavelengths and a detector unit configured to receive radiation generated by the emitter unit and transmitted through tissue of the subject. The sensor further comprises a sensor memory storing sensor-specific information about the sensor unit, wherein the sensor-specific information includes at least calibration data for a given measurement mode, and a memory access interface for enabling an entity external to the sensor to update at least part of the sensor-specific information in a sensor ability update process, thereby to update ability of the sensor unit to operate in the given measurement mode.
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Citations
20 Claims
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1. A measuring apparatus for determining the amount of at least one substance in blood of a subject, the measuring apparatus comprising:
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a sensor unit comprising an emitter unit comprising a first plurality of emitter elements configured to emit radiation at a second plurality of wavelengths; and a detector unit configured to receive radiation generated by the emitter unit and transmitted through tissue of a subject, wherein the detector unit is further configured to produce measurement signals indicative of absorption caused by blood of the subject; a first memory storing sensor-specific information about the sensor unit, wherein the sensor-specific information includes at least calibration data for calibrating the apparatus for a selected measurement mode that corresponds to a given combination of wavelengths; and a sensor ability maintenance unit configured to perform a sensor ability update process in which at least part of the sensor-specific information is updated, thereby to update ability of the sensor unit to operate in the selected measurement mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A physiological sensor for use in determining the amount of at least one substance in blood of a subject, the physiological sensor being attachable to the subject and comprising:
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an emitter unit comprising a first plurality of emitter elements configured to emit radiation at a second plurality of wavelengths; a detector unit configured to receive radiation generated by the emitter unit and transmitted through tissue of the subject, wherein the detector unit is further configured to produce measurement signals indicative of absorption caused by blood of the subject; a sensor memory storing sensor-specific information about the sensor unit, wherein the sensor-specific information includes at least calibration data for a given measurement mode; and a memory access interface for enabling an entity external to the physiological sensor to update at least part of the sensor-specific information in a sensor ability update process, thereby to update ability of the sensor unit to operate in the given measurement mode. - View Dependent Claims (13, 14, 15, 16, 17)
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18. An interface unit for use in determining the amount of at least one substance in blood of a subject, the interface unit comprising:
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a first interface for connecting the interface unit to a monitoring unit; a second interface for connecting the interface unit to a sensor unit comprising a first plurality of emitter elements configured to emit radiation at a second plurality of wavelengths; an emitter switching unit configured to connect drive current generated by the monitoring unit to the sensor unit through the second interface; a memory storing sensor-specific information about the sensor unit, wherein the sensor-specific information includes at least calibration data for a given measurement mode; and a memory access interface for enabling an entity external to the interface unit to update at least part of the sensor-specific information in a sensor ability update process, thereby to update ability of the sensor unit to operate in the given measurement mode. - View Dependent Claims (19, 20)
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Specification