RFID Reagent Verification in Tissue Processing Workflows
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Solution Overview
Problem
Existing tissue processing apparatuses face issues with users mistakenly connecting extraction devices to reagent receptacles containing previously used or incorrect reagents, leading to potential tissue damage and processing delays, which are not detected until after a lengthy processing cycle.
Innovation Solution
Implementing RFID tags on reagent receptacles to track their usage status and type, ensuring the apparatus only uses new and correct reagents by reading the tags with an RFID reader, and providing user instructions to connect the extraction device to the correct receptacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If users manually connect extraction devices to reagent receptacles based on apparatus instructions, then the apparatus can process tissue samples through multiple reagent stages, but users may mistakenly connect to wrong or previously used reagent receptacles causing tissue damage
Solution Approach 1:
The patent replaces manual visual identification and connection of reagent receptacles with an RFID-based automated identification system. The RFID tags on receptacles and reader on the extraction device enable automatic recognition of reagent type and usage status, eliminating reliance on user memory and visual inspection, thus preventing wrong connections while maintaining processing throughput
Solution Approach 2:
The system provides real-time feedback to users through the control unit when an RFID tag indicates a reagent is unsuitable (wrong type or previously used). The apparatus communicates the status of each receptacle and prevents extraction operations when incorrect reagents are detected, creating a closed-loop verification system that ensures connection accuracy
2Manufacturing precision
If the apparatus performs lengthy processing cycles to ensure high-quality tissue processing, then processing quality is improved, but errors in reagent connection are not detected until after processing completes causing delays
Solution Approach 1:
The RFID verification system performs reagent validation before the lengthy tissue processing cycle begins. By checking reagent type and usage status upfront through RFID tag reading, the system prevents errors from propagating through the processing cycle, eliminating post-processing delays while maintaining quality
Solution Approach 2:
The patent replaces post-processing error detection with pre-processing RFID-based verification. The automated identification system checks reagent suitability before extraction operations commence, substituting manual verification that would occur too late with an automated system that prevents errors before they affect tissue quality or cause delays
3Productivity
If the apparatus uses in-process reagent management with multiple reagent receptacles, then processing efficiency is improved, but the complexity of tracking reagent status and preventing wrong connections increases
Solution Approach 1:
The patent replaces complex manual tracking of multiple reagent receptacles with RFID-based automated identification. Each receptacle carries an RFID tag storing type and usage status information, and the extraction device's reader automatically retrieves this data, eliminating the need for users to manually track which receptacles contain which reagents and their processing status
Solution Approach 2:
The system uses RFID tags as information copies that replicate reagent identity and status data. Instead of requiring users to remember or track physical reagent characteristics, the RFID tags provide portable, machine-readable copies of reagent information that can be automatically verified by the extraction device
4Reliability
If users are instructed to connect extraction devices to specific reagent receptacles, then correct reagent usage is achieved, but users may wrongly indicate connection to new reagent when previously used or wrong reagent remains connected
Solution Approach 1:
The patent replaces manual user indication of reagent connection status with automated RFID detection. The extraction device's reader automatically reads the RFID tag on the connected receptacle and verifies reagent suitability, eliminating the need for users to manually indicate or confirm connection accuracy while maintaining operational simplicity
Solution Approach 2:
The system enables self-verification where the RFID reader automatically checks whether the connected receptacle contains appropriate reagent without requiring user intervention. The apparatus performs its own verification of reagent status, freeing users from the burden of accurate manual indication while ensuring reliability
Data Source
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AI summary
A tissue processing apparatus for processing biological tissue. The tissue processing apparatus includes: an extraction device configured to, when connected to a reagent receptacle, take reagent out from the reagent receptacle for use by the tissue processing apparatus; a tag reader configured to read information from a machine- readable tag. The tissue processing apparatus is configured to: provide an indication to a user to instruct the user to connect the extraction device to a reagent receptacle containing reagent that has not previously been used in a tissue processing apparatus; and after the user has connected the extraction device to a reagent receptacle and/or has indicated that such a connection has been made, use the extraction device to take reagent out from the reagent receptacle for use by the tissue processing apparatus only if it has been determined, based on information read by the tag reader from a machine-readable tag attached to the reagent receptacle, that the reagent receptacle contains reagent that has not previously been used in a tissue processing apparatus.