Method and apparatus for measuring glucose in body fluids using sub-dermal body tissue impedance measurements
First Claim
1. A method for measuring or monitoring blood glucose level in a subject, the method comprising:
- injecting an electrical current into a body tissue of the subject using a first pair of injection electrodes;
detecting a voltage caused by the current flowing through the body tissue using a second pair of sensing electrodes;
measuring the impedance of the body tissue using a device for measuring impedance operatively connected to the pair of sensing electrodes; and
,calculating the blood glucose level in the subject as a function of the measured impedance including correlating the measured impedance with a predetermined relationship between impedance and glucose levels.
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Abstract
A method and an apparatus for measuring glucose level in the body fluid of a subject, typically blood glucose level, by measuring impedance of a body tissue, with two pairs of electrodes, two electrodes for injecting current into a body tissue and two electrodes for detecting the ensuing voltage of the body tissue. The body tissue is typically a sub-dermal or sub-cutaneous tissue. The measured impedance of the body tissue is used to correlate with directly determined glucose levels to determine the glucose level from the measured impedance. It is thus possible to determine body fluid glucose levels in a reliable and reproducible manner.
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Citations
11 Claims
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1. A method for measuring or monitoring blood glucose level in a subject, the method comprising:
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injecting an electrical current into a body tissue of the subject using a first pair of injection electrodes; detecting a voltage caused by the current flowing through the body tissue using a second pair of sensing electrodes; measuring the impedance of the body tissue using a device for measuring impedance operatively connected to the pair of sensing electrodes; and
,calculating the blood glucose level in the subject as a function of the measured impedance including correlating the measured impedance with a predetermined relationship between impedance and glucose levels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification