Urine Component Analysis Device Daily Excretion Calculation
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Solution Overview
Problem
Existing urine component analysis methods are cumbersome and inaccurate for daily use, requiring frequent urine collection and large containers, and often rely on inaccurate assumptions about daily urine volume, leading to poor calculation accuracy for sodium and potassium excretion in hypertensive patients.
Innovation Solution
A device and method that utilize a correlation storage section to convert the concentration of specific components in one urine sample to the total urine concentration over a day, combined with a total urine amount acquisition section to calculate daily excretion amounts, reducing the need for frequent urine collection and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If urine collection is performed every time the subject discharges urine over a long period, then measurement accuracy is improved, but the subject experiences significant nuisance and difficulty in practice
Solution Approach 1:
The invention extracts only the essential information needed for analysis (first urine after wake-up and total daily urine amount) while eliminating the cumbersome requirement to collect all urine samples throughout the day. This allows accurate measurement without requiring frequent urine collection from the subject.
Solution Approach 2:
Instead of requiring complete urine collection for the entire day, the invention uses a partial sample (first urine after wake-up) combined with the total daily urine amount measurement. This partial approach provides sufficient data for accurate component analysis while significantly reducing the burden on the subject.
2Measurement precision
If a large-volume container of about 1 liter is used to collect all urine, then complete urine collection is achieved, but the subject experiences time consumption and labor for washing the container
Solution Approach 1:
The invention extracts only the necessary urine sample (first urine after wake-up) for analysis, eliminating the need to collect and wash large volumes of urine from the entire day's output. This significantly reduces the time and labor required for container cleaning while maintaining measurement accuracy.
3Loss of time
If a known value such as average urine amount per day is used as total urine amount, then time and labor for urine amount measurement are saved, but calculation accuracy of salinity excretion deteriorates due to varying salinity concentration
Solution Approach 1:
The invention performs preliminary measurement of the total daily urine amount and uses this actual value in the calculation. By measuring the total urine amount once and using it for all component calculations, the system eliminates the need for repeated measurements while maintaining high calculation accuracy through the use of actual measured data rather than averages.
4Device complexity
If the first urine after wake-up is collected and analyzed, then the procedure is simplified, but the subject must still provide large-volume containers and spend time washing them
Solution Approach 1:
The invention extracts only a small sample from the first urine after wake-up for analysis, eliminating the need to collect and wash the entire volume of urine. This maintains the simplicity of the collection procedure while dramatically reducing the time and effort required for container cleaning.
Data Source
AI summary
A urine component analysis device with a correlation storage section stores data indicating a correlation between a measured concentration of a specific component in human urine and measured concentration of the specific urine component in one day. A data input section inputs data indicating concentration of the specific component in one subject's urine. A concentration of the specific component in total urine of the subject in one day is determined by conversion using the correlation storage section based on the concentration of the specific component in the urine. A total urine amount acquirement section acquires total amount of urine excreted by the subject in one day based on conversion or database. An excretion amount of the specific component in total urine of the subject in one day is calculated by multiplying the concentration of the specific component in total urine in one day, by the acquired total urine amount.