Sterilization Cassette with Superabsorbent Polymer Packaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cassettes for delivering sterilants to instrument sterilizers face challenges in safely handling and packaging high-concentration oxidizing agents like hydrogen peroxide, as they require careful handling to prevent leakage and mishaps, especially when the integrity of the cells is breached.
Innovation Solution
A cassette design featuring a body with cells containing an oxidizing sterilant, packaged within an envelope that includes a fire-resistant superabsorbent polymer absorbent material capable of retaining liquid hydrogen peroxide without release at pressures up to 2.8 psig, along with a visible indicator for the presence of liquid or water, and non-flammable superabsorbent polymers like polyacrylate or polyacrylamide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-concentration oxidizing sterilant (e.g., 59% hydrogen peroxide) is used in cassette cells, then sterilization effectiveness is improved, but safety and handling difficulty worsen due to leakage and fire hazards
Solution Approach 1:
The patent introduces an absorbent material as an intermediary substance between the sterilant and the external environment. This absorbent material acts as a mediator that can uptake and retain the oxidizing sterilant, preventing direct contact and potential harmful effects while still allowing the sterilant to be delivered to instruments during the sterilization process
Solution Approach 2:
The absorbent material is pre-positioned within the cassette structure before the sterilant is introduced. This beforehand cushioning mechanism ensures that if the cell integrity is breached or under pressure conditions occur, the absorbent material is already in place to immediately absorb and contain the sterilant, preventing leakage and fire hazards before they can cause damage
2Reliability
If absorbent material is added to package the cassette, then safety against leakage is improved, but device complexity increases
Solution Approach 1:
The patent merges the absorbent material with the existing cassette packaging structure. The absorbent material is integrated into the envelope or outer packaging of the cassette, combining the containment function with the absorption function in a unified structure rather than adding separate independent components
Solution Approach 2:
The absorbent material serves multiple functions simultaneously: it acts as a safety mechanism to absorb leaked sterilant, provides structural support within the packaging envelope, and can indicate sterilant presence through visual indicators. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity
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 solution effectively absorbs and retains the sterilant under pressure, preventing leakage and ensuring safe handling, while the indicator provides visual confirmation of sterilant presence, enhancing safety and reliability in sterilization processes.
Implementation Method 1
an absorbent material comprising a superabsorbent polymer absorbent of the oxidizing sterilant
Implementation Method 2
an indicator of the presence of liquid is provided within the envelope, the indicator being viewable from outside of the envelope
Data Source
AI summary
A cassette for a sterilizer has one or more cells containing a sterilant. Packaging for the cassette includes and outer fluid impermeable envelope and an absorbent web wrapped around the cassette to absorb and contain any sterilant which may leak out of the cassette. The absorbent web includes a superabsorbent polymer.