Fluorescing Gel Cleaning Audit via UV Detection
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Solution Overview
Problem
Current methods for evaluating the thoroughness of surface cleaning in healthcare and food service environments lack a non-microbiological approach, making it difficult to assess compliance with cleaning and disinfection protocols effectively, particularly in controlling nosocomial pathogens like MRSA, VRE, and C. difficile.
Innovation Solution
A fluorescing gel composition is applied to surfaces, which can be measured for removal after cleaning using UV radiation, serving as a cleaning audit indicator, and includes a water-soluble optical brightener, complexing agent, surfactant, solvent, preservatives, and thickening agent, allowing for inconspicuous application and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional cleaning monitoring methods are used, then no objective assessment is available, but the lack of measurement precision makes it difficult to assess compliance with cleaning protocols
Solution Approach 1:
The patent employs fluorescent dyes that undergo color/fluorescence changes when cleaned. The dyes are applied to surfaces and emit fluorescent light when exposed to UV radiation, allowing visual detection of cleaning effectiveness. When cleaned properly, the fluorescent signal is removed; when cleaning is inadequate, the fluorescent signal remains visible under UV light, providing objective measurement precision for compliance assessment.
Solution Approach 2:
The patent replaces subjective visual inspection with objective fluorescent detection. Instead of relying on human observation of cleaning quality, the system uses fluorescent dyes that can be detected through UV illumination, substituting mechanical/visual assessment with optical detection mechanisms that provide quantifiable data on cleaning effectiveness.
2Measurement precision
If fluorescent dyes are applied to surfaces for monitoring, then cleaning effectiveness can be measured, but the dyes may interfere with cleaning products or leave residues
Solution Approach 1:
The patent employs fluorescent dyes that are designed to be temporarily applied and then easily removed. The dyes are formulated to not permanently stain surfaces and can be washed away with standard cleaning products. After serving their monitoring function, the dyes are discarded along with the cleaning residue, eliminating the need for their permanent removal or neutralization.
Solution Approach 2:
The patent introduces fluorescent dyes as intermediary substances that bridge the gap between cleaning application and assessment. The dyes do not interfere with cleaning products but rather serve as detectable markers that allow evaluation of cleaning effectiveness. The dyes are positioned as temporary mediators that facilitate measurement without becoming permanent contaminants.
3Reliability
If comprehensive surface cleaning is performed to reduce pathogens, then infection control improves, but the difficulty of detecting and measuring cleaning thoroughness remains
Solution Approach 1:
The patent uses fluorescent dyes that provide visual feedback on cleaning thoroughness. When surfaces are cleaned adequately, the fluorescent signal is removed, indicating successful cleaning. When cleaning is insufficient, the fluorescent signal persists, providing immediate visual feedback on the extent of cleaning thoroughness and enabling reliable detection of cleaning quality for infection control purposes.
Solution Approach 2:
The patent implements a feedback mechanism where fluorescent dyes provide real-time information on cleaning effectiveness. The fluorescent signal serves as immediate feedback to cleaning personnel and administrators about the quality of cleaning performed, enabling continuous improvement of cleaning protocols and enhancing infection control reliability through measurable data.
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 method provides a timely and objective assessment of cleaning effectiveness, identifying deficiencies in hospital cleaning practices and aiding in the reduction of pathogen levels by ensuring thorough surface disinfection.
Implementation Method 1
The optical brightener is water soluble and fluoresces under UV light
Data Source
AI summary
Fluorescing gel formulations are disclosed for monitoring cleaning of a surface. The fluorescing gel formulations are stable, fluoresce under UV light, and do not leave a mark after drying and removal. The compositions include an oppositely charged complexing agent which is used in combination with an anionic or cationic optical brightener. In some embodiments, the compositions include a cationic optical brightener with no complexing agent.