Acid Violet 43 Staining Agent for Gastrointestinal Mucosa
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Solution Overview
Problem
Current gastrointestinal mucosa staining agents, such as indigo carmine, methylene blue, and Lugol's iodine, face issues with stability, safety, and effectiveness due to color discrepancies, adverse reactions, cumbersome preparation, and instability, leading to suboptimal visualization and detection during endoscopy.
Innovation Solution
A staining agent comprising acid violet 43, optionally combined with allure red and an antioxidant like citric acid, is developed, providing improved stability, safety, and rinsing performance, with a concentration range of 0.01-5% for acid violet and 0.01-2.5% for allure red, packaged in a sealed brown bottle to enhance shelf life and visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If indigo carmine is used for staining, then the staining effect is enhanced through physical deposition, but the color discrepancy with the digestive tract causes an unclear staining visual field
Solution Approach 1:
The patent changes the staining agent color from blue (indigo carmine) to red (acid violet 43). The red color provides better contrast with the gastrointestinal mucosa, improving visual field clarity while maintaining effective staining. This color change resolves the contradiction between staining effectiveness and visual clarity.
2Illumination intensity
If methylene blue is used for staining, then the mucosa turns blue for visualization, but it cannot be rinsed and requires re-staining, and may cause adverse reactions
Solution Approach 1:
The patent employs a staining agent (acid violet 43) that is designed for single-use and easy removal, unlike methylene blue which persists on the mucosa. The red staining agent can be completely rinsed off after observation, eliminating the need for re-staining and reducing operational complexity.
3Reliability
If Lugol's iodine is used at 5% concentration, then staining is effective, but the preparation is cumbersome and concentration accuracy is difficult to maintain
Solution Approach 1:
The patent changes the concentration parameter from 5% (Lugol's iodine) to a much lower 0.01-5% range for acid violet 43. This parameter change maintains effective staining while dramatically simplifying preparation procedures and improving concentration accuracy, as lower concentrations are easier to prepare precisely and store stably.
4Ease of operation
If indigo carmine is stored at room temperature, then it is readily available, but it undergoes redox reaction with oxygen and becomes unstable
Solution Approach 1:
The patent creates a protective environment for the staining agent by adding antioxidants (vitamin C, vitamin E, or sodium metabisulfite) that prevent oxidation reactions. This effectively creates a chemically inert environment that protects acid violet 43 from degrading through redox reactions with atmospheric oxygen, maintaining stability during storage.
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 proposed staining agent offers better safety, stability, and rinsing performance compared to existing agents, providing a clearer visualization with improved staining effects at lower concentrations and extended shelf life, while avoiding adverse reactions and oxidation.
Implementation Method 1
The principle of action of the indigo carmine staining agent is to perform staining comparison by means of physical deposition
Implementation Method 2
Methylene blue staining is to make a mucosa turn blue by absorbing the methylene blue by the mucosa
Implementation Method 3
after the methylene blue is absorbed, human hemoglobin may become methemoglobin
Implementation Method 4
the indigo carmine staining agent is unstable in properties, and may undergo a redox reaction with oxygen in air at a room temperature
Data Source
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AI summary
The present invention provides a staining agent for gastrointestinal mucosa, including acid violet 43. Compared with existing commercially available staining agent products, the staining agent for gastrointestinal mucosa provided by the present invention has better safety, rinsing performance and stability. It is not susceptible to oxidation and decomposition under conventional conditions, and may provide a longer shelf life. Meanwhile, its staining effect is better than those of commercially available staining agent products at a low concentration.