Dilute Sodium Hypochlorite Mixing Device with Freshness Indicator
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Solution Overview
Problem
Dilute disinfectant solutions, such as stabilized sodium hypochlorite solutions, degrade over time and require fresh mixing, necessitating a method to ensure their efficacy and safety in clinical applications like medicine and veterinary surgery, where sterility and ease of use are critical.
Innovation Solution
A portable device for mixing a dilute disinfectant solution, comprising a disinfectant reservoir, a dilutant reservoir, and an indicator reservoir, which allows for the creation of a fixed dilution ratio upon mixing, with the indicator ensuring the solution's freshness and activity through visible degradation within a specific time frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If dilute disinfectant solution is prepared in advance, then convenience of use is improved, but solution stability deteriorates due to degradation over time
Solution Approach 1:
The device segments the concentrated disinfectant solution and dilutant into separate reservoirs, allowing them to remain stable individually while only mixing when needed for use. This prevents premature degradation while maintaining convenience.
Solution Approach 2:
The device performs preliminary preparation by pre-filling separate reservoirs with concentrated disinfectant and dilutant in precise volumes. The actual mixing occurs only when triggered by user activation, combining the benefits of advance preparation with fresh solution quality.
2Reliability
If indicator is added to show freshness, then reliability of solution activity is improved, but device complexity increases
Solution Approach 1:
The device incorporates a pH indicator that changes color based on the acidity level, which directly reflects the concentration of active hypochlorite. This simple visual change provides reliable verification of solution freshness and activity without requiring complex monitoring systems.
Solution Approach 2:
The pH indicator acts as an intermediary substance that translates the chemical state (hypochlorite concentration) into a visible signal (color change). This allows users to verify solution activity without direct chemical analysis or complex equipment.
3Manufacturing precision
If fixed dilution ratio is ensured through device design, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The device uses separate pre-measured reservoirs for concentrated disinfectant and dilutant, with each reservoir's volume precisely determined during manufacturing. This segmentation allows high precision dilution ratios without requiring complex mixing mechanisms or calibration systems.
Solution Approach 2:
The precise volumes of concentrated disinfectant and dilutant are pre-determined and pre-filled into separate reservoirs during device manufacturing. This preliminary action ensures accurate dilution ratios are achieved simply by mixing the pre-measured components, avoiding the need for complex dosing mechanisms.
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 device provides a clinically acceptable, easy-to-use method for preparing a fresh and effective dilute disinfectant solution, ensuring sterility and preventing contamination, while the indicator ensures the solution is used within the therapeutic concentration window.
Implementation Method 1
an indicator to show that the dilute sodium hypochlorite solution is fresh and active
Data Source
AI summary
A pharmaceutically acceptable composition comprising dilute stabilized sodium hypochlorite solution and an indicator to show that the dilute stabilized sodium hypochlorite solution is fresh and active.