Sample Rack Code Arrangement for Automated Analyzer Positioning
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Solution Overview
Problem
Automated analyzers face challenges in accurately identifying and positioning samples and reagents due to the risk of mix-ups, especially when handling multiple samples and reagents with different requirements, leading to potential errors in analysis results.
Innovation Solution
A sample carrier system with a sample stand featuring an axially extended receptacle and a code arrangement that includes information about position, number, and dimensions, along with mechanical and sensory markings to ensure correct identification and positioning, and a gripping device for easy handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual manual scanning and positioning of sample tubes is used, then sample information can be collected, but the risk of sample mix-up and positioning errors increases
Solution Approach 1:
The patent uses optical copying/scanning of barcode information from sample tubes and automatically transfers this information to the carrier unit barcode structure. The system creates an optical copy of the sample identification data and uses it to automatically position samples, eliminating manual positioning errors while maintaining reliable sample identification.
Solution Approach 2:
The patent replaces the manual mechanical positioning system with an automated optical-mechanical system. Barcode scanners optically read sample information, and automated positioning mechanisms physically place samples in correct locations based on this optical data, eliminating the need for manual scanning and positioning operations.
2Reliability
If sample racks with position barcodes are used to create a controlled environment, then samples can be kept stable, but errors in assigning analysis results to samples can still occur
Solution Approach 1:
The patent implements a feedback system where the automated analyzer scans barcodes on the carrier unit and sample tubes, verifies that samples are correctly positioned in their assigned locations, and uses this feedback information to accurately assign analysis results to the correct samples. The system continuously monitors and confirms position assignments throughout the analysis process.
Solution Approach 2:
The patent uses barcode copying technology to transfer position assignment information from the carrier unit to the analysis system. The barcode structure on the carrier unit contains copied information about which samples should be in which positions, and this optical copy is read and verified by the automated analyzer to ensure accurate sample-position assignment.
3Adaptability or versatility
If multiple reagents with different requirements are handled manually, then flexibility in analysis programs is maintained, but the complexity of reagent handling and risk of mix-up increases
Solution Approach 1:
The patent applies barcode copying technology to reagent containers, where optical scanners read reagent identification information and automatically match reagents to the correct analysis programs and sample positions. This maintains flexibility in handling different reagent types while eliminating manual identification errors through automated optical recognition.
Solution Approach 2:
The patent replaces manual reagent handling with automated mechanical systems that use barcode information to correctly position and dispense reagents. The system automatically transfers reagents from source containers to sample positions based on scanned barcode data, maintaining adaptability to different reagent requirements while ensuring accurate reagent-sample matching.
Data Source
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AI summary
What is provided is a sample rack (20a) which comprises at least one axially elongate receptacle (21) for a sample tube (30). The sample rack (20a) also comprises a code arrangement (100) arranged on its exterior. This code arrangement contains information relating to the position of the at least one receptacle (21) and also information relating to the total number of receptacles (21) and/or the dimension of the sample rack (20a). Also provided is a sample carrier system (1) which comprises a sample carrier (10) with at least one sample rack receptacle (11) and a set of sample racks (20a, 20b). The sample rack receptacle (11) and the sample racks (20a, 20b) have co-operating means which characterize their belongingness.