Amniotic Fluid Detection Article for Rapid Urine Differentiation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing diagnostic systems for amniotic fluid leakage often provide false positive results due to interference from biological fluids like urine, and require time-consuming evaluation, posing risks of misdiagnosis and unnecessary medical interventions.
Innovation Solution
A diagnostic article comprising a membrane, transfer, and absorbent layers with specific indicator compositions, including aliphatic carboxylic acid, hydrophilic surfactant, non-cyclic plasticizer, and ion-balance reagent, which allows immediate differentiation between amniotic fluid and urine without drying, reducing false positives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional chromatographic detection methods are used, then amniotic fluid can be detected, but false positive results occur due to interference from urine and other biological fluids
Solution Approach 1:
The indicator composition is segmented into multiple functional components: pH indicator agents (phenol red, bromothymol blue) for basicity detection, oxidative enzymes (lactase, glucose oxidase) for sugar-specific detection, and peroxidase for color development. This segmentation allows the system to detect multiple parameters simultaneously, creating a detection pattern specific to amniotic fluid that distinguishes it from urine and other interfering fluids.
Solution Approach 2:
The indicator composition uses a composite formulation combining multiple chemical agents: pH indicators, sugar-specific enzymes (lactase, glucose oxidase), peroxidase, and chromogenic substrates (TMB, DAB). This composite material creates a multi-parameter detection system where the combined response pattern provides specific identification of amniotic fluid, resolving the contradiction between detection sensitivity and false positive reduction.
2Measurement precision
If conventional diagnostic methods are used, then amniotic fluid leakage can be detected, but time-consuming evaluation is required
Solution Approach 1:
The indicator composition is pre-formulated with all necessary reagents (pH indicators, enzymes, substrates) in optimal concentrations and combinations. The absorbent layer is pre-assembled with the indicator composition in direct contact, so that upon fluid exposure, the complete detection reaction occurs immediately without requiring separate addition of reagents or sequential processing steps, thus eliminating time-consuming evaluation.
Solution Approach 2:
The patent merges the sample collection function (absorbent layer), reagent storage (indicator composition with all enzymes and substrates), and detection reaction into a single integrated article. This consolidation allows simultaneous multi-parameter detection without sequential steps, reducing the time required for diagnosis while maintaining reliable differentiation between amniotic fluid and interfering substances.
3Productivity
If simple pH-based detection is used, then detection is rapid, but interference from urine and other biological fluids causes false positives
Solution Approach 1:
The detection system is segmented into multiple independent detection pathways within the same indicator composition: pH detection (phenol red, bromothymol blue), sugar detection (lactase-glucose oxidase-peroxidase system), and color development (TMB or DAB substrates). Each pathway responds to different chemical properties of the fluid, and the combined response pattern provides specific identification of amniotic fluid, maintaining both speed and precision.
Solution Approach 2:
The system monitors multiple chemical parameters simultaneously (pH, sugar concentration, oxidation-reduction reactions) rather than relying on a single pH measurement. By detecting changes in multiple parameters and analyzing their combined pattern, the system achieves rapid differentiation between amniotic fluid and urine while maintaining high detection speed through simultaneous rather than sequential measurement.
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
The article provides accurate, rapid, and reliable detection of amniotic fluid leakage, minimizing stress and time consumption for users, and reducing the risk of misdiagnosis.
Implementation Method 1
the indicator composition comprises: one or more indicator composition polymers; a non-cyclic plasticizer; a hydrophilic surfactant; a C1-16 aliphatic carboxylic acid; an ion-balance reagent; and an indicator agent
Implementation Method 2
an absorbent layer having a first side and a second side
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention provides an article for detecting amniotic fluid, comprising a membrane layer, a transfer layer, an absorbent layer, and a base layer, wherein the transfer layer comprises an indicator composition. Further provided are methods of use of the article for obtaining an immediate, clear, and reliable identification of amniotic fluid leakage.