Urine Component Analysis Device Using Correlation-Based Ratio Conversion
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Solution Overview
Problem
Existing urine component analysis methods are cumbersome for daily use, requiring frequent urine collection and large containers, making it difficult for hypertensive patients to monitor sodium and potassium excretion ratios, as they often need to carry and clean large containers and measure urine amounts repeatedly.
Innovation Solution
A device and method that calculates the concentration ratio of sodium and potassium in total urine excreted over a day by inputting data from a single urine sample, using a correlation storage section to convert the concentration ratios, eliminating the need for continuous urine collection and large containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If urine collection is performed over one day or plural days to measure excretion amounts, then measurement accuracy is improved, but ease of operation deteriorates because the subject must collect urine frequently and carry containers
Solution Approach 1:
The invention extracts only the essential measurement element (concentration ratio of specific components) from the complete urine collection process. By measuring concentration in a single urine sample and using correlation data to determine the concentration ratio in total daily urine, the system eliminates the need for continuous urine collection, frequency tracking, and volume measurement, thereby resolving the contradiction between measurement accuracy and operational convenience.
Solution Approach 2:
The invention uses preliminary correlation data stored in advance (established through prior research between single-sample concentration ratios and total urine concentration ratios) to enable rapid determination without performing the complete measurement process each time. The correlation storage section contains pre-computed relationships that allow the determination section to quickly calculate results from simple input data, resolving the contradiction by preparing measurement frameworks in advance.
2Measurement precision
If a large-volume container is used to collect all urine for measurement, then measurement accuracy is improved, but device complexity and ease of operation worsen due to the need for large containers and repeated washing
Solution Approach 1:
The invention extracts only the concentration ratio information from a minimal urine sample rather than requiring complete urine collection. By measuring specific component concentrations in a single small sample and using correlation-based conversion, the system eliminates the need for large collection containers and their associated handling complexity, resolving the contradiction between measurement accuracy and device simplicity.
Solution Approach 2:
The invention creates a virtual representation of total urine concentration ratio through mathematical correlation rather than physically collecting and measuring all urine. The correlation storage section contains derived relationships that allow the system to calculate total urine concentration ratios from single-sample measurements, eliminating the need for physical large-volume containers and their maintenance requirements.
3Measurement precision
If urine amount measurement function is added to determine excretion amounts, then measurement precision improves, but device complexity and ease of operation worsen due to large-scale device requirements
Solution Approach 1:
The invention extracts only the concentration ratio determination function from the complete excretion amount measurement system. By focusing solely on measuring specific component concentrations and their ratios rather than complete excretion amount measurement, the system eliminates the need for urine volume measurement functions and large-scale device infrastructure, resolving the contradiction between measurement precision and device complexity.
Data Source
AI summary
In a urine component analysis device, a correlation storage section stores data indicating a correlation between a measured concentration in one urine and in total urine in one day for each of a first and second specific component in the urine excreted by a human. A data input section inputs data indicating a concentration of the first specific component and of the second specific component in one urine of a subject. A concentration of the first specific component and of the second specific component in total urine in one day are determined by performing conversion using the correlation stored in the correlation storage section based on the concentration of the first specific component and the second specific component in the one urine. A concentration ratio between the first specific component and the second specific component in total urine in one day is determined based on the results of conversion.