Specimen Routing Control for Clinical Analyzer Congestion
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Solution Overview
Problem
Current automatic analysis systems for clinical laboratory testing face challenges in predicting congestion in transfer paths, leading to increased Turn Around Time (TAT) for urgent specimens, especially during peak times due to insufficient processing capacity and interference between specimens.
Innovation Solution
An automatic analysis system that includes a tracking unit to determine specimen positions, a simulation unit to estimate waiting times based on operational models, and a scheduling unit to adjust the timing and order of specimen processing to prevent congestion by prioritizing urgent specimens and optimizing the flow through the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple specimens are processed simultaneously through a centrifuge, then processing capacity is improved, but Turn Around Time for urgent specimens increases
Solution Approach 1:
The system segments specimens into different priority groups (urgent and non-urgent) and processes them through separate pathways. The centrifuge can process multiple specimens simultaneously, but the control system segments the input queue and routing to ensure urgent specimens are directed to available centrifuges or processed with higher priority, thus maintaining processing capacity while reducing TAT for urgent cases.
Solution Approach 2:
The system performs preliminary classification and routing of specimens before they enter the centrifugation process. By identifying urgent specimens early in the workflow and pre-routing them through priority channels, the system ensures they receive prompt attention while non-urgent specimens are processed in batches, thereby maintaining high throughput without compromising urgent specimen TAT.
2Object-affected harmful factors
If specimen input is suppressed to prevent congestion, then transfer path congestion is reduced, but system processing capacity is underutilized
Solution Approach 1:
The system dynamically adjusts specimen input rates and routing based on real-time monitoring of device status, transfer path congestion, and queue lengths. When congestion is detected in certain pathways, the control system dynamically reroutes specimens through alternative paths or adjusts input rates temporarily, thereby preventing congestion without significantly reducing overall system capacity utilization.
Solution Approach 2:
The system implements continuous feedback loops that monitor specimen flow, device availability, and congestion levels. This feedback information is used to adjust specimen input rates, routing decisions, and resource allocation in real-time, allowing the system to optimize between preventing congestion and maintaining high processing capacity by responding adaptively to actual system conditions.
3Loss of time
If urgent specimens are prioritized over normal specimens, then Turn Around Time for urgent specimens is reduced, but processing efficiency for normal specimens decreases
Solution Approach 1:
The system applies different quality levels of service to different specimen types based on their priority. Urgent specimens receive expedited processing with higher resource allocation and priority routing, while normal specimens are processed through standard channels. This local differentiation allows the system to reduce TAT for urgent specimens without significantly impacting the overall processing efficiency, as normal specimens continue to be handled through optimized batch processes.
Data Source
AI summary
Precise prediction of the state of congestion in an automatic analysis system and adjustment of timings and the order of take-in and take-out of specimens in each of devices prevent increase in TATs of urgent specimens. A device management server for instructing each device to take in or take out specimens in each device determines the current position of each specimen, estimates the staying time of each specimen in one of regions by simulating the operation of each device assuming an initial state in which each specimen is at the current position, causes the simulation unit to perform a simulation, and corrects the timings or order of take-in and take-out of one or more other specimens so that each of the staying times in one of the regions do not exceed a corresponding allowable staying time in the region.