Glucose sensor and measurement correction method

Abstract

The invention discloses a glucose sensor. The glucose sensor comprises a substrate layer and an electrode layer, wherein the electrode layer is arranged on the substrate layer, and a first time detection electrode, a working electrode, a counter electrode and a sample injection detection electrode are arranged on the electrode layer; and the counter electrode is arranged between the working electrode and the sample injection detection electrode. The invention also discloses a glucose measuring method. The invention also discloses a glucose measurement correction method. The hematocrit ratio ofa blood sample is converted according to the time when a whole sample injection channel is filled with blood and a measured current and the time difference delta t between two recorded times, then the glucose current value is corrected and compensated through the hematocrit ratio and the environment temperature measured by the temperature sensor, and finally the glucose value is converted and displayed. The cost of instruments and test paper is greatly saved; and the method has better test accuracy in a wider erythrocyte hematocrit ratio range.

Description

technical field [0001] The invention belongs to a blood glucose measuring device, in particular to a glucose sensor and a measuring and correcting method. Background technique [0002] Currently on the market, there are two commonly used technical solutions for the influence of the hematocrit ratio (hereinafter referred to as HCT) on the test results: 1) Relying on the adjustment and optimization of the formula itself, adjusting and optimizing the hemolytic agent and the electronic medium in the formula Type and dosage, to minimize the impact of HCT on test results. The advantage of this solution is that the cost is low, but the disadvantage is that a large number of different hemolytic agents and electronic mediators need to be tried, the research and development costs are high, and the effect is often poor. The application range of HCT is small, generally ranging from 30-55% or even smaller; [0003] 2) Add an alternating current test impedance module through the test pa...

AI Technical Summary

Problems solved by technology

The advantage of this scheme is that the measured HCT has high accuracy and has a wide range. Generally, 10-70% or even 0-70% can be tested accurately, but the disadvantage is that it is necessary to increase the AC test impedance module and The supporting electrode structure greatly increases the cost of test paper development and production, and greatly increases the difficulty of the production process

This solution is often used in some high-end models, limited by cost, there are few corresponding models on the market

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