Colorimetric Hydration Testing Article with Chloride Ion Detection
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Solution Overview
Problem
Current methods for assessing hydration state, such as sweat sampling, are invasive, time-consuming, and impractical for real-time monitoring in athletic, military, or work environments.
Innovation Solution
A hydration testing article with a carrier portion and wick that uses chemical compositions to produce colorimetric changes in response to chloride ions, allowing for real-time visual indication of hydration status through a fill indicator element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sweat sampling methods (venipuncture, urine collection, direct sweat sampling) are used to assess hydration state, then measurement precision can be achieved, but ease of operation deteriorates and loss of time increases
Solution Approach 1:
The patent employs colorimetric indicators that change color in response to chloride ion concentration in sweat. The carrier portion contains chemical compositions that produce visual color changes, allowing hydration assessment without complex sampling procedures. This resolves the contradiction by maintaining measurement precision through chemical detection while dramatically improving ease of operation through simple visual reading.
Solution Approach 2:
The invention replaces mechanical/invasive sampling methods (needles, collection containers, manual handling) with a chemical field-based detection system. The testing article uses chemical reactions and colorimetric changes to detect chloride ions, eliminating the need for physical sample collection and processing, thus improving ease of operation while maintaining measurement accuracy.
2Measurement precision
If traditional sweat sampling methods are used, then measurement precision can be achieved, but loss of time increases due to being time-consuming and difficult to execute
Solution Approach 1:
By replacing time-consuming mechanical sampling procedures with immediate chemical detection, the invention achieves rapid hydration assessment. The colorimetric reaction occurs instantly upon contact with sweat, eliminating the time required for sample collection, transport, and laboratory analysis, thus resolving the time loss contradiction while maintaining precision.
Solution Approach 2:
The testing article performs the detection function autonomously without requiring external equipment or complex procedures. The chemical compositions in the carrier portion automatically react with chloride ions in sweat and produce visual color changes, enabling the system to serve itself and provide immediate results without time-consuming manual intervention.
3Measurement precision
If invasive or semi-invasive sampling methods are used, then measurement precision can be achieved, but ease of operation deteriorates in real-time athletic or field conditions
Solution Approach 1:
The invention replaces invasive mechanical sampling (venipuncture, direct sweat collection) with a non-invasive chemical detection system that can be applied directly to the skin. The testing article detects chloride ions through chemical reactions and colorimetric changes, eliminating the need for needles or collection devices, thus improving ease of operation in athletic and field conditions while maintaining measurement precision.
4Measurement precision
If direct sweat sampling is used, then measurement precision can be achieved, but device complexity increases due to difficulty in execution
Solution Approach 1:
The invention extracts only the essential detection function from complex sampling systems. By using colorimetric indicators that directly react with chloride ions in sweat, the patent eliminates the need for complex sample collection, processing, and analysis equipment. This simplifies the overall device while maintaining measurement precision through straightforward chemical detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables rapid, direct, and non-invasive real-time assessment of hydration state, providing a visual indication of hydration levels based on color changes, suitable for use during physical activities or in challenging environments.
Implementation Method 1
a wick, where the wick is in direct contact with the first end of the carrier portion to allow the transfer of the fluid from the wick to the carrier portion
Implementation Method 2
a first chemical composition disposed in the porous medium, where the chemical composition reacts with chloride ions to produce a first color change
Implementation Method 3
a second chemical composition that reacts with the fluid of the test subject to produce a second color change, where the second color change is different than the first color change
Implementation Method 4
a carrier portion having a porous medium through which a fluid of the test subject moves
Data Source
AI summary
Embodiments herein include testing articles to assess hydration of a test subject. The testing articles can include a carrier portion having a porous medium through which a fluid of the test subject moves. The carrier portion can include a first end and a second end opposite the first end. The testing articles can include a first chemical composition disposed in the porous medium that reacts with chloride ions to produce a first color change. The testing articles can include a wick that is in direct contact with the first end of the carrier portion to allow the transfer of the fluid from the wick to the carrier portion. The testing articles can include a fill indicator element in direct contact with the second end of the carrier portion to allow the transfer of the fluid from the carrier portion to the fill indicator element. Other embodiments are also included herein.