Transdermal rate method for determining and skin electric conductivity detector thereof
A skin and subject technology, applied in diagnostic recording/measurement, medical science, sensors, etc., can solve problems such as long power-on time, complicated device structure, and high power consumption
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no. 1 approach
[0090] Fig. 1 is a structural block diagram of a glucose concentration analyzer according to a first embodiment of the present invention. First, the configuration of a glucose concentration analyzer 100 according to a first embodiment of the present invention will be described with reference to FIG. 1 .
[0091] As shown in FIG. 1 , the glucose concentration analyzer 100 is a device that extracts tissue fluid containing glucose, one of the biochemical components, from a living body, and calculates the blood sugar level by analyzing the glucose contained in the extracted tissue fluid. This glucose concentration analyzer 100 applies direct current to the minimally invasively perforated skin of the subject (extraction site), extracts interstitial fluid from the extraction site, and obtains the glucose content (glucose extraction amount) from the interstitial fluid by a glucose sensor. The amount of glucose extracted varies depending on the depth of the micropores. Therefore, the ...
no. 2 approach
[0148] Figure 13 It is a structural block diagram of the glucose concentration analyzer of the second embodiment of the present invention. This second embodiment differs from the above-mentioned first embodiment in that the conductivity measuring device for calculating the conductivity and the concentration analysis device for calculating the glucose concentration are described as separate examples. first refer to Figure 13 The configuration of the glucose concentration analyzer 300 according to the second embodiment of the present invention will be described.
[0149] The glucose concentration analyzer 300 of the second embodiment is composed of a conductivity measurement device 300a and a concentration analysis device 300b. Among them, the conductivity measurement device 300a is worn on the subject's skin 500, and is used to calculate the conductivity of the extraction site 501, and extract glucose into the mesh bar 201 at the same time; the concentration analysis device...
no. 3 approach
[0171] Figure 16 It is a structural block diagram of a glucose concentration analyzer according to the third embodiment of the present invention. The third embodiment is different from the above-mentioned first and second embodiments, and describes an example of measuring electrical conductivity using direct current. First, refer to Figure 16 The structure of the glucose concentration analyzer 400 according to the third embodiment of the present invention will be described.
[0172] Such as Figure 16 As shown, the glucose concentration analyzer 400 of the third embodiment includes: a solution chamber 401 disposed at the extraction site 501 of the subject's skin 500 , a syringe 402 supplying pure water to the solution chamber 401 , and a glucose sensor 403 disposed on the solution chamber 401 , the electrode 404 arranged in the solution chamber 401 , the electrodes 405 and 406 respectively arranged in the part 502 and the part 503 of the skin 500 other than the extraction...
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