Combined Apparatus For Measuring the Blood Glucose Level From an Ocular Fluid
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Abstract
A combined apparatus for measuring the blood glucose level from an ocular fluid comprises a hand-held fluorescence photometer (D1) for determining the glucose level of the ocular fluid and a device (D2) for the amperometric or photometric determination of the blood glucose level. The fluorescence photometer (D1) comprises: first irradiating means (7,8,10) for providing a pilot beam (1) for irradiation of the eye (3) in order to excite a first fluorescence comprising a first wavelength band; first detecting means (8,9,12,13) for measuring the intensity of the of the pupil fluorescence within the first wavelength band; second irradiating means (17,18,21) for providing a measurement beam (5) for irradiation of the eye in order to excite an ocular sensor (4) to emit a second fluorescence comprising a second wavelength band; second detecting means (18,19,20,22,23,24,25) for measuring the intensity of the second fluorescence within the second wavelength band. The first and second irradiating means are arranged such that the measurement beam irradiates the eye under a predetermined angle (a) between 0° and 90° and at a predetermined distance from the pilot beam.
32 Citations
26 Claims
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1-13. -13. (canceled)
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14. Combined apparatus for measuring the blood glucose level from an ocular fluid of a user, comprising
a hand-held fluorescence photometer for determining the glucose level of the ocular fluid of the user a device for the amperometric or photometric determination of the blood glucose level of the user for calibration purpose, wherein the hand-held fluorescence photometer comprises: -
(a) first irradiating means for providing a pilot beam for irradiation of the eye of the user in order to excite a pupil fluorescence, i.e. a first fluorescence, comprising a first wavelength band, said pupil fluorescence traveling along a first optical path; (b) first detecting means arranged in the first optical path for measuring the intensity of the of the pupil fluorescence within the first wavelength band; (c) second irradiating means for providing a measurement beam for irradiation of the eye of the user in order to excite an ocular sensor which is in contact with the ocular fluid of the user and which—
upon irradiation with said measurement beam—
emits a second fluorescence comprising a second wavelength band, said second fluorescence traveling along a second optical path;(d) second detecting means arranged in the second optical path for measuring the intensity of the second fluorescence within the second wavelength band; wherein the first and second irradiating means are arranged such that the measurement beam irradiates the eye of the user under a predetermined angle (α
) and at a predetermined distance from the pilot beam, said angle (α
) being between 0° and
90°
.- View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification