Measurement apparatus and method therefor
First Claim
Patent Images
1. A measurement apparatus comprising:
- a probe system operably coupled, when in use, to a processing resource;
the probe system and the processing resource are arranged, when in use, to measure an apparent thickness of a volume of corneal tissue referenced at a time, and determine an apparent thickness change thereof in respect of the referenced time;
a storage device arranged to record a correlation or regression between the apparent thickness change of the volume of the corneal tissue and a blood-glucose concentration level;
wherein the processing resource is arranged to access the storage device and to use the measurement of apparent thickness change to determine the blood-glucose concentration level in respect of the referenced time from the correlation or regression accessed;
the probe system comprises a source arranged to emit, when in use, a probe beam and a scanning lens and/or waveguide, wherein the probe system scans the corneal tissue to determine the apparent thickness change thereof.
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Abstract
A measurement apparatus comprises a probe system (100) operably coupled, when in use, to a processing resource (134). The probe system (100) and the processing resource (134) are arranged, when in use, to measure an apparent thickness change of a volume of the medium (108) to be measured and to determine a physiological parameter using the measurement of the apparent thickness change.
50 Citations
18 Claims
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1. A measurement apparatus comprising:
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a probe system operably coupled, when in use, to a processing resource; the probe system and the processing resource are arranged, when in use, to measure an apparent thickness of a volume of corneal tissue referenced at a time, and determine an apparent thickness change thereof in respect of the referenced time; a storage device arranged to record a correlation or regression between the apparent thickness change of the volume of the corneal tissue and a blood-glucose concentration level; wherein the processing resource is arranged to access the storage device and to use the measurement of apparent thickness change to determine the blood-glucose concentration level in respect of the referenced time from the correlation or regression accessed; the probe system comprises a source arranged to emit, when in use, a probe beam and a scanning lens and/or waveguide, wherein the probe system scans the corneal tissue to determine the apparent thickness change thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of measuring a property of a corneal tissue, comprising;
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probing a volume of the corneal tissue in order to receive a feedback signal; measuring an apparent thickness of the volume of the corneal tissue referenced at a time using the feedback signal; determining an apparent thickness change of the volume of the corneal tissue in respect of the referenced time; accessing a record of a correlation or regression between the apparent thickness change of the volume of the corneal tissue and a blood-glucose concentration level; using the measurement of apparent thickness change to determine the blood-glucose concentration level in respect of the referenced time from the correlation or regression accessed and wherein the probing comprises scanning the corneal tissue with a probe system comprising a source arranged to emit, when in use, a probe beam and a scanning lens and/or waveguide to determine the apparent thickness change thereof.
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Specification