Plasma-Based Alcohol Detection in Medical Device Sterilization
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Solution Overview
Problem
Current medical device sterilization systems face challenges in effectively detecting and addressing residual alcohol on or in medical devices, which can lead to unstable plasma generation, premature degradation of devices, impaired sterilization efficacy, and safety risks during subsequent use.
Innovation Solution
A sterilization system that includes a hydrogen peroxide sensor and a plasma generator, with a processor that monitors the plasma power profile to detect residual alcohol, adjusts sterilization parameters, and performs iterative steps to eliminate alcohol, such as extinguishing and reactivating plasma, evacuating the chamber, and circulating air to ensure effective sterilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If residual alcohol is present on or in the medical device, then the sterilization process can be initiated, but plasma generation becomes unstable and sterilization efficacy is impaired
Solution Approach 1:
The system performs a preliminary detection of residual alcohol on or in the medical device before initiating the sterilization process. The processor monitors the plasma power profile during a test plasma generation phase to determine whether alcohol is present, and only proceeds with full sterilization if the device is clear of alcohol or below threshold levels.
Solution Approach 2:
The system continuously monitors the plasma power profile during sterilization and uses this feedback to detect the presence of residual alcohol. When alcohol is detected above threshold levels, the system adjusts sterilization parameters or aborts the process to prevent impaired sterilization efficacy.
2Reliability
If residual alcohol is present on or in the medical device, then the sterilization process is initiated, but the medical device undergoes premature degradation
Solution Approach 1:
The system performs a preliminary detection of residual alcohol on or in the medical device before initiating the sterilization process. The processor monitors the plasma power profile during a test plasma generation phase to determine whether alcohol is present, and only proceeds with full sterilization if the device is clear of alcohol or below threshold levels.
Solution Approach 2:
The system continuously monitors the plasma power profile during sterilization and uses this feedback to detect the presence of residual alcohol. When alcohol is detected above threshold levels, the system adjusts sterilization parameters or aborts the process to prevent impaired sterilization efficacy.
3Reliability
If residual alcohol is present on or in the medical device, then sterilization is performed, but safety risks arise during subsequent use
Solution Approach 1:
The system performs a preliminary detection of residual alcohol on or in the medical device before initiating the sterilization process. The processor monitors the plasma power profile during a test plasma generation phase to determine whether alcohol is present, and only proceeds with full sterilization if the device is clear of alcohol or below threshold levels.
Solution Approach 2:
The system continuously monitors the plasma power profile during sterilization and uses this feedback to detect the presence of residual alcohol. When alcohol is detected above threshold levels, the system adjusts sterilization parameters or aborts the process to prevent impaired sterilization efficacy.
4Reliability
If the system monitors plasma power profile to detect residual alcohol, then sterilization efficacy is maintained, but system complexity increases
Solution Approach 1:
The system uses the plasma generation process itself to detect residual alcohol, rather than requiring a separate detection system. The processor analyzes the plasma power profile characteristics during normal sterilization operation, allowing the sterilization process to serve dual purposes: sterilization and alcohol detection.
Solution Approach 2:
The plasma generation system performs multiple functions: it generates plasma for sterilization and simultaneously serves as a detection mechanism for residual alcohol by monitoring plasma power profile characteristics. This multi-functionality reduces the need for separate detection hardware.
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 ensures stable plasma generation, prevents device degradation, maintains sterilization efficacy, and enhances safety by reliably removing residual alcohol, thereby ensuring effective sterilization of medical devices.
Implementation Method 1
a plasma generator, with a processor that monitors the plasma power profile to detect residual alcohol
Implementation Method 2
evacuating the chamber
Data Source
AI summary
A method includes initiating a sterilization process with a sterilizing machine while a medical device is positioned in a sterilization chamber of the sterilizing machine. The method further includes monitoring one or more parameters (e.g., plasma power profile) of the sterilization process to detect whether alcohol is present on or in the medical device. Based on the monitoring, the method further includes determining whether alcohol is present on or in the medical device. If alcohol is determined to be present on or in the medical device, the method further includes initiating a routine to reduce or eliminate the alcohol on or in the medical device. If alcohol is not determined to be present on or in the medical device, the method further includes completing sterilization of the medical device. The medical device may include an endoscope such as a gastrointestinal endoscope.