Laboratory Reagent Drawer Security via Forbidden Zones
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Solution Overview
Problem
Laboratory systems face challenges in maximizing throughput while minimizing operator hands-on time and ensuring safety, particularly in managing reagent cartridges that require secure storage and handling due to limited space and potential robotic hazards.
Innovation Solution
A laboratory system with slidably mounted reagent drawers and position sensors to determine closed positions, along with a control unit that manages a robotic handler's operation by defining forbidden zones to prevent unsafe access and ensure secure reagent handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reagent drawers are kept locked to prevent operator injury from robotic handlers, then operator safety is improved, but operator access to reagent storage zone is limited
Solution Approach 1:
The system dynamically changes the state of reagent drawers between locked and unlocked based on real-time conditions. Position sensors detect whether drawers are open or closed, and the control unit adjusts accessibility accordingly - drawers are unlocked only when closed and no batch run is active, creating a dynamic security system that adapts to operational needs
Solution Approach 2:
The system uses position sensors to continuously monitor the state of reagent drawers and provides feedback to the control unit. This feedback mechanism enables the control unit to make real-time decisions about unlocking drawers based on sensor data regarding drawer position and batch run status, ensuring safety while enabling necessary access
2Productivity
If multiple reagent cartridges are stored on board to achieve sufficient throughput in interleaved batch processing, then productivity is improved, but device complexity increases due to limited space
Solution Approach 1:
The reagent storage system is divided into multiple separate reagent drawers, each capable of being independently managed and accessed. This segmentation allows the system to store multiple reagent cartridges in an organized manner, facilitating efficient retrieval and reducing complexity in managing multiple reagent types for interleaved batch processing
Solution Approach 2:
Reagent cartridges are nested within reagent drawers, which themselves are nested within the reagent storage zone of the analyzer. This hierarchical nesting structure maximizes space utilization while maintaining organized storage and efficient access to multiple reagent cartridges needed for high-throughput processing
Data Source
AI summary
A method for increasing operational security of a laboratory system or device comprising: a reagent storage area (1) comprising at least two reagent drawers (2, 3) mounted slidably along a first axis Y between an open position (O) and a closed position (C) and arranged stacked with respect to a second axis Z perpendicular to the first axis Y, and having each a position sensor (P2, P3) for determining the closed position (C) of the respective reagent drawer (2, 3), at least one robotic handler head (4) movably arranged in the reagent storage area at least along the first axis Y and the second axis Z a control unit (5) configured to control the operation of the robotic handler head (4) and connected to the position sensors (P2, P3), the method comprising the steps of defining for each reagent drawer (2, 3) a first forbidden zone along the first axis Y (Y) and a second forbidden along the second axis Z (Z2, Z3), determining by means of the position sensors (P2, P3) if the reagent storage drawers (2, 3) are in the closed position (C), and control the operation of the handler head (4).