Sterilization System With Biological Indicator Analyzer
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Solution Overview
Problem
Current medical device sterilization systems are prone to operator errors, leading to ineffective sterilization cycles and potential patient infections, particularly due to diffusion-restricted spaces in medical devices and the need for precise arrangement and operation of sterilization equipment, which can result in cross-contamination and re-contamination of medical devices.
Innovation Solution
A sterilization system that includes a sterilizing cabinet, a biological indicator analyzer, a communication hub, and a user interface, which guides users through the selection of sterilization cycles, placement of medical devices, and use of biological indicators to ensure effective sterilization, minimizing operator error and providing real-time feedback on sterilization efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If packaging with semi-permeable barrier is used to prevent contamination, then protection against contaminating organisms is improved, but sterilization effectiveness deteriorates due to impeded sterilant diffusion
Solution Approach 1:
The system performs preliminary actions by creating vacuum conditions and introducing sterilant gases in a controlled sequence before final sealing, ensuring the sterilant has adequate time to diffuse through the packaging barrier and reach diffusion-restricted spaces within devices before the cycle completes
Solution Approach 2:
The sterilization cycle employs periodic action through multiple phases including vacuum cycles, sterilant introduction phases, and holding periods, allowing the sterilant to periodically penetrate packaging and diffuse into device lumens over extended time intervals
2Reliability
If automated sterilization system is used to reduce operator error, then sterilization reliability is improved, but device complexity and operator training requirements increase
Solution Approach 1:
The system provides self-service through automated cycle selection, device arrangement guidance, and real-time monitoring that reduces dependence on operator expertise while maintaining sterilization reliability through built-in control algorithms and feedback mechanisms
Solution Approach 2:
The system implements feedback through real-time monitoring of sterilization parameters, biological indicator analysis, and automated adjustment of cycle parameters based on detected conditions, ensuring consistent results without requiring extensive operator training
3Measurement precision
If biological indicator analysis is performed to confirm sterilization efficacy, then sterilization verification is improved, but risk of cross-contamination increases during analysis process
Solution Approach 1:
The system extracts the biological indicator from the sterilization chamber into a separate analysis device, isolating the verification process from the sterilization environment and eliminating cross-contamination risk by performing analysis in a controlled external setting
Solution Approach 2:
The system uses an intermediary analysis device that receives biological indicators from the sterilization chamber, performs verification analysis, and returns results without direct human handling of potentially contaminated indicators, reducing cross-contamination risk through automated intermediary processing
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 system significantly reduces the risk of patient infection by ensuring thorough sterilization of medical devices, minimizing cross-contamination, and providing a standardized process for effective sterilization cycles, thereby enhancing the reliability of medical device sterilization.
Implementation Method 1
Each of these methods may depend to a certain extent on the diffusion rates of the sterilization fluids (e.g., gases) upon the medical devices to be sterilized
Implementation Method 2
vapor phase sterilization, either with or without a gas plasma and ethylene oxide (EtO)
Data Source
AI summary
A biological indicator analyzer includes a plurality of wells, a plurality of organism detector features, and a user input feature such as a touch screen. Each well is configured to receive a respective biological indicator. Each organism detector feature is configured to detect whether a biological indicator disposed in a corresponding well of the plurality of wells contains a living organism. The touch screen is configured to receive user input and provide information to the user indicating a status of biological indicator analysis. The biological indicator analyzer may be used to analyze a biological indicator that was positioned in a sterilization chamber of a sterilizing cabinet along with at least one medical device that is to be sterilized. The analysis may indicate whether the sterilization cycle in the sterilization chamber as successful.