Reagent Vessel Tracking for Automatic Analyzers
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Solution Overview
Problem
Automatic analyzers face challenges in managing reagent degradation and efficient reagent usage, particularly when mixing reagents stored at cold and normal temperatures, leading to increased reagent consumption and operator workload due to frequent replacements and potential interruptions in analysis operations.
Innovation Solution
The implementation of a system that measures and manages the elapsed time of reagent vessels using a storage medium for reading reagent information, sets permissible placing limits, and transfers reagents between storage means to prevent degradation, minimize interruptions, and optimize reagent usage, including features like warning alerts and data alarms for expired reagents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a replacement reagent storing means without cold storage function is used, then operator workload is reduced and reagent replacement is simplified, but reagent degradation occurs over time
Solution Approach 1:
The system performs preliminary actions by reading reagent information from the storage medium when the reagent vessel is first loaded into the replacement storing means, and starts measuring the placing elapsed time at that point. This preliminary measurement and tracking enables proactive reagent management before degradation occurs.
Solution Approach 2:
The control unit continuously monitors the placing elapsed time and compares it against the permissible placing limit value stored in the system. When the elapsed time approaches or exceeds the limit, the system provides feedback through warnings or alarms, enabling timely reagent replacement or transfer to cold storage.
2Productivity
If reagent vessels are kept in replacement storing means for long periods, then operator intervention is minimized, but reagent degradation increases
Solution Approach 1:
The control unit continuously monitors the placing elapsed time and compares it against the permissible placing limit value. When the limit is reached or exceeded, the system provides feedback through warnings or alarms, enabling timely reagent replacement or transfer to cold storage, thus preventing degradation while maintaining continuous operation.
Solution Approach 2:
The system automatically tracks and manages reagent vessels themselves by reading information from their storage media and monitoring their placement time. This self-service capability eliminates the need for manual tracking while ensuring reagents are replaced before degradation occurs.
3Reliability
If permissible placing limit values are enforced strictly, then reagent quality is maintained, but analysis operations may be interrupted
Solution Approach 1:
The system performs preliminary actions by tracking the placing elapsed time from the moment the reagent vessel is loaded. This continuous monitoring enables proactive scheduling of reagent transfers or replacements before the permissible limit is reached, allowing operations to be planned and executed during appropriate intervals without disrupting analysis continuity.
Data Source
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AI summary
Unlike conventional reagent storing means of an analyzing unit having a cold-storage function, replacement reagent storing means having no cold-storage function requires reagent management of a higher order. An automatic analyzer is provided that manages the placing elapsed time for a reagent vessel in replacement reagent storing means 2, compares the placing elapsed time for the reagent with a permissible placing limit value stored as one of analysis parameters for each analysis item, and determines as to whether or not the placing elapsed time exceeds permissible limit value. In this way, the analyzer prevents the degradation of the reagent and automatically transfers the reagent to an analyzing section for performing measurement.