Blood Glucose Measurement Device with Hematocrit-Adaptive Voltage Timing
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Solution Overview
Problem
Conventional biological information measurement devices face challenges in accurately measuring blood glucose levels due to variations caused by hematocrit values, leading to either excessively long measurement times for subjects with low hematocrit values or significant variations for those with high hematocrit values, making it difficult to achieve quick and accurate measurements.
Innovation Solution
The device calculates the hematocrit value during the pre-processing or biological information measurement mode and adjusts the duration of measuring voltage application accordingly, allowing for tailored measurement times based on the calculated hematocrit value to reduce variations and optimize measurement efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the duration of the biological information measurement mode is set to be long, then the variation in blood glucose level measurement is reduced for subjects with high hematocrit values, but the measurement time becomes excessively long for subjects with low hematocrit values
Solution Approach 1:
The patent applies dynamics by making the measurement duration adjustable rather than fixed. The control unit dynamically modifies the duration of the biological information measurement mode based on the calculated hematocrit value, allowing the system to adapt its operation to different subject conditions and resolve the contradiction between measurement precision and time efficiency
Solution Approach 2:
The patent changes the parameter of measurement duration based on hematocrit value. By calculating hematocrit from impedance measurements and using this value to adjust the measurement mode duration, the system optimizes both accuracy for high hematocrit subjects and speed for low hematocrit subjects
2Productivity
If the duration of the biological information measurement mode is reduced uniformly, then the measurement time is shortened for quick results, but the blood glucose level measurement varies greatly for subjects with high hematocrit values
Solution Approach 1:
The system changes the measurement duration parameter based on hematocrit value calculation. For subjects with low hematocrit values, shorter duration maintains efficiency, while for high hematocrit subjects, extended duration ensures accuracy, thus resolving the contradiction between productivity and measurement precision
Solution Approach 2:
The system uses feedback from impedance measurements to calculate hematocrit values and adjusts the measurement duration accordingly. This feedback mechanism allows the system to automatically optimize measurement parameters based on subject-specific characteristics, achieving both efficiency and accuracy
Data Source
AI summary
The present invention relates to a biological information measurement device and a biological information measurement method using the same, and is intended to allow appropriate measurement to be carried out. In the biological information measurement device of the present invention, a control unit 18 is allowed to execute a pre-processing voltage application mode A and a biological information measurement mode C. Furthermore, in the biological information measurement device of the present invention, the hematocrit value of blood is calculated in either the pre-processing voltage application mode A or the biological information measurement mode C, and according to the hematocrit value thus calculated, the duration for applying a measuring voltage upon and after the calculation of the hematocrit value is modified.