Segmented Perspiration Patch for Accurate Blood Glucose Measurement
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Solution Overview
Problem
Existing methods for measuring blood glucose concentration using perspiration face challenges such as dilution and false detection due to the absorption of perspiration accelerators, and inefficient collection when patch positions are shifted.
Innovation Solution
A device comprising a perspiration accelerating unit, a collecting unit, and a positioning unit, along with a control method that ensures accurate measurement by coupling these units to fix positions and control their performance for efficient perspiration collection and detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a perspiration accelerator is applied to the skin to induce perspiration for blood component measurement, then perspiration can be obtained for analysis, but the perspiration accelerator itself is absorbed by the absorption pad and dilutes the perspiration sample causing false detection
Solution Approach 1:
The patch is divided into two separate functional parts: a perspiration accelerator patch and a perspiration collection pad. The accelerator patch induces perspiration without containing absorption material, while the collection pad is applied separately to collect only the perspiration fluid. This segmentation prevents the accelerator from being absorbed into the collection medium, eliminating dilution and false detection while maintaining sufficient perspiration volume for analysis.
2Ease of operation
If the perspiration collection pad is attached at a different position than the perspiration accelerator patch, then the skin can be cleaned between applications, but perspiration collection efficiency decreases due to position shift
Solution Approach 1:
The perspiration accelerator patch includes positioning markings that provide visual feedback to guide the correct placement of the collection pad. This feedback mechanism ensures the collection pad is positioned exactly where perspiration is being produced, maintaining collection efficiency while allowing the skin to be cleaned and the patch to be reapplied.
3Device complexity
If the perspiration accelerator and collection pad are combined in one patch, then the device structure is simplified, but the accelerator liquid dilutes the perspiration sample causing measurement errors
Solution Approach 1:
The system is segmented into two separate patches: an accelerator patch that induces perspiration without absorption materials, and a collection pad that contains the absorption material but is applied separately. This segmentation maintains simple individual patch structures while preventing the accelerator from contaminating the perspiration sample, thereby preserving measurement precision.
4Measurement precision
If blood collection methods are used to measure blood glucose concentration, then accurate measurement can be achieved, but the procedure imposes a great burden on the patient
Solution Approach 1:
The invention uses perspiration as an intermediary substance to indirectly measure blood glucose concentration. Instead of directly collecting and analyzing blood, the system collects perspiration that contains glucose and other blood components, providing an alternative measurement pathway that maintains accuracy while significantly reducing patient burden by eliminating needle punctures and blood collection procedures.
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 efficient collection and accurate measurement of blood component concentrations using perspiration, preventing dilution and ensuring reliable detection by maintaining consistent positioning and performance.
Implementation Method 1
a perspiration accelerating unit arranged to accelerate perspiration from a body surface or a measurement site
Implementation Method 2
a detector arranged to detect a target component from the perspiration collected by the perspiration collecting unit
Data Source
AI summary
A measurement device includes an electronic component device, a perspiration acceleration device, and a perspiration collection device. The perspiration acceleration device or the perspiration collection device is removably coupled to the electronic component device. The electronic component device is attached to a measurement site with a belt. A perspiration accelerating performance is made with respect to the measurement site with the perspiration acceleration device coupled to the electronic component device, and thereafter, the perspiration acceleration device is replaced with the perspiration collection device with the electronic component device attached to the measurement site, and the perspiration collection and measurement computation performance are made.