Diagnostic Test Strip Separation Layer SiO2 Remission Control
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Solution Overview
Problem
Current diagnostic test elements face challenges with batch-to-batch variations in film layer composition leading to remission variations, requiring cumbersome batch-specific calibration and risking incorrect calibration usage, which is costly and time-intensive.
Innovation Solution
A diagnostic test element with a separation layer containing dispersed SiO2 in the amount of 1.0 to 1.6 g/m2, combined with a detection layer, minimizes remission kinetic differences between batches by achieving a saturated dispersion level, allowing for a general calibration curve and eliminating the need for batch-specific labeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If batch-specific calibration curves are used to compensate for remission variations, then measurement precision is improved, but device complexity and ease of operation deteriorate due to cumbersome calibration management
Solution Approach 1:
The patent changes the physical-chemical parameters of the separation layer by precisely controlling SiO2 content (1.0 to 1.6 g/m2) and dispersion saturation level. This parameter optimization stabilizes the remission characteristics across batches, allowing a single calibration curve to accurately measure all batches without requiring batch-specific calibration management
Solution Approach 2:
The patent achieves homogeneity in remission characteristics across different batches by standardizing the separation layer composition and dispersion saturation level. This eliminates batch-to-batch variations, making the measurement system consistent and calibratable with a universal curve
2Measurement precision
If batch-specific calibration curves are implemented, then measurement precision is improved, but loss of time increases due to calibration selection and verification
Solution Approach 1:
By optimizing SiO2 content and dispersion saturation in the separation layer, the patent stabilizes remission characteristics to vary within ±5% across batches. This allows using a single calibration curve for all batches, eliminating the time-consuming process of selecting and verifying batch-specific calibrations
3Stability of the object's composition
If dispersion saturation is increased in the separation layer, then remission consistency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent identifies and controls critical parameters (SiO2 content: 1.0 to 1.6 g/m2, dispersion saturation level) that achieve remission stability with minimal manufacturing variation. By focusing on these key parameters, the patent achieves ±5% remission consistency across batches without requiring excessive manufacturing precision
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
This solution ensures consistent remission across different batches, reducing the need for individual calibration curves and eliminating the necessity for cost-intensive batch labeling, thereby enhancing measurement quality and reducing production time.
Implementation Method 1
wherein said at least one separation layer comprises dispersed SiO2 in an amount of about 1.0 to 1.6 g/m2
Implementation Method 2
The first layer located on the transparent foil is in a moist state and thereby exhibits considerably less light scattering than the second layer lying over it
Data Source
AI summary
The present invention pertains to the field of manufacture of diagnostic test elements. Specifically, the invention relates to a diagnostic test element for determining an analyte comprised in a body fluid sample, said test element comprising at least one test field with at least one detection layer and at least one separation layer, wherein said at least one separation layer comprises dispersed SiO2 in an amount of about 1.0 to 1.6 g/m2. The invention also relates to a coating composition being capable of forming a separation layer on a diagnostic test element of the present invention described above. Moreover, provided is a method for the manufacture of the diagnostic test element as well as the use of the diagnostic test element for determining the amount of an analyte, preferably, glucose, in a sample of a subject.