Self-Indicating Bacteriostatic Wipe for Visual Bacteria Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wipes that remove bacteria from surfaces often fail to provide users with clear indication of their effectiveness, leading to potential over-use on sanitized areas and lack of confidence in the cleaning process.
Innovation Solution
A wipe incorporating a bacteriostatic agent with an affinity for negatively charged bacterial cell walls and a solvatochromatic indicator that undergoes a detectable color change in the presence of bacteria, ensuring effective removal and visual confirmation of cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wipe uses only a bacteriostatic agent to remove bacteria, then bacterial removal effectiveness is improved, but the user lacks information about cleaning effectiveness
Solution Approach 1:
The patent applies a solvatochromatic indicator that changes color based on the presence of bacteria. When bacteria are present on the surface, the indicator displays one color; when bacteria are removed, the color changes to indicate cleanliness. This provides immediate visual feedback to the user about the cleaning effectiveness without requiring additional testing or interpretation.
2Reliability
If a wipe provides visual indication of bacterial presence, then user confidence in cleaning is improved, but the wipe complexity increases
Solution Approach 1:
The patent merges the cleaning function (bacteriostatic agent) and the indication function (solvatochromatic indicator) into a single integrated wipe. Both components are incorporated into the same substrate, allowing the wipe to simultaneously clean and provide visual feedback without requiring separate components or steps.
Solution Approach 2:
The solvatochromatic indicator provides clear, intuitive color-based feedback that is easily recognizable by users. The color change mechanism is simple and direct, requiring no complex interpretation or additional devices, thereby maintaining ease of use despite the added functionality.
3Reliability
If a wipe uses cationic treatments to remove bacteria, then bacterial removal capability is improved, but chemicals remain on the surface
Solution Approach 1:
The patent extracts the indication function from separate chemical treatments and incorporates it into the wipe structure itself through the solvatochromatic indicator. This allows the wipe to provide visual feedback without requiring additional chemical applications or treatments that would leave residues on the surface.
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 wipe effectively captures and inhibits bacterial spread while providing a visual signal of cleanliness, ensuring users know when the surface is free of bacteria, thus preventing unnecessary further cleaning.
Implementation Method 1
the solvatochromatic indicator undergoes a detectable color change in the presence of the bacteria
Implementation Method 2
The bacteriostatic agent has an affinity for the negatively charged cell walls of the bacteria
Data Source
AI summary
A wipe that includes a bacteriostatic agent that contains cations having an affinity for the negatively charged cell walls of bacteria is provided. The affinity of the bacteriostatic agent for the bacteria allows the wipe to capture bacteria, thereby removing them from a surface and also inhibiting their spread to other surfaces that may contact the wipe. Of particular advantage, the bacteriostatic agent may help protect against the spread or infection of pathogens without the use of chemicals, such as antiseptics or antibiotics. Still further, the wipe of the present invention also contains a solvatochromatic indicator that undergoes a color change in the presence of a broad spectrum of bacteria. Thus, when the wipe captures bacteria, the indicator undergoes a color change that signals to the user that the wipe is functioning properly. The lack of a color change may likewise provide the user with the assurance that the area is generally free of bacteria and clean.