Biological Indicator Variable Resistance Sterilization
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Solution Overview
Problem
Current medical device sterilization systems face challenges in ensuring effective sterilization, particularly in diffusion-restricted spaces, and there is a risk of operator error leading to potential patient infections due to inadequate verification of sterilization efficacy.
Innovation Solution
A sterilization system incorporating a biological indicator with variable resistance capabilities, which can be adjusted to simulate the conditions within medical devices, and a sterilization cabinet with advanced features like touch screen display, processor, and identification tag reader to ensure accurate sterilization cycles and reduce human error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a biological indicator is used to verify sterilization efficacy, then the reliability of sterilization verification is improved, but the complexity of the sterilization system increases
Solution Approach 1:
The patent replaces manual verification methods with automated electronic detection systems. The biological indicator incorporates an RFID tag that enables automatic identification and tracking, substituting manual record-keeping and verification processes with electronic automation, thereby improving reliability while managing system complexity through intelligent automation
Solution Approach 2:
The patent uses RFID tags as information copies that store and transmit sterilization data. The tag creates a digital replica of the sterilization cycle information, allowing verification without physically examining the biological indicator itself, thus improving verification reliability while keeping the system manageable through information replication
2Ease of operation
If the sterilization system incorporates advanced features like touch screen display and processor, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The sterilization system performs self-verification through the RFID tag and processor. The system automatically tracks sterilization cycles, verifies efficacy, and maintains records without requiring manual intervention for each verification step, thereby improving ease of operation while the automation manages the underlying complexity
Solution Approach 2:
The RFID tag serves as an intermediary that bridges the biological indicator and the sterilization system's control processor. This intermediary enables automatic data exchange and verification, improving operational ease by eliminating manual verification steps while the tag itself manages the complexity of data communication
3Measurement precision
If variable resistance capabilities are added to simulate diffusion-restricted spaces, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The biological indicator incorporates variable resistance capabilities that change electrical parameters to simulate different diffusion conditions. By adjusting resistance values, the system can model diffusion-restricted spaces more accurately, improving measurement precision while using a relatively simple electrical property change rather than complex structural modifications
Data Source
AI summary
A biological indicator with variable resistance may be controlled by moving a cap or housing of the biological indicator to cause the size of vents that allow flow of sterilant through the housing to decrease or increase in effective size. An indicator window may show a user the current resistance of the biological indicator, and may also show a readable indicator that may be captured by a scanner to allow a sterilizing cabinet to identify the current resistance. When the level of resistance shown by the readable indicator is not compatible with a sterilization cycle selected by a user, the procedure may be delayed and a notification provided to the user that a problem exists. The readable indicator may be a passive tag with a memory that allows information to be read and written, so that the biological indicator may carry data from one device to another.