Laboratory Specimen Tray Segmentation
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Solution Overview
Problem
The existing systems for managing laboratory specimens lack effective organization, leading to frequent mislabeling and mixing of specimens between patients, which can result in patient harm and diagnostic errors due to the lack of mechanical separation and identification in the processing queue.
Innovation Solution
A laboratory specimen tray with an elongated body featuring an overhanging flange, elongated slot, circular recesses with circumferential grip inserts, and rectangular cavities for securing containers, along with color-coded identification markings on the upper surface to prevent mixing of specimens by ensuring distinct separation of specimen types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If specimens are placed in a loose queue on a counter for processing, then the processing workflow is simple and flexible, but specimens can accidentally be mixed with other patient specimens leading to mislabeling and diagnostic errors
Solution Approach 1:
The queue is divided into separate compartments, each dedicated to a specific patient or specimen type. This segmentation prevents mixing of specimens while maintaining an organized workflow, resolving the contradiction between operational simplicity and specimen identification accuracy.
Solution Approach 2:
The tray acts as an intermediary device between specimen collection and processing. It provides a structured interface that maintains specimen-patient association through physical separation and visual identification markers, ensuring reliability without complicating the workflow.
2Loss of information
If tissue processing cassettes are labeled for specimens, then patient identification is improved, but cassettes can still be misplaced or mixed with other patient cases in the queue
Solution Approach 1:
The tray compartments provide physical segmentation that reinforces labeled identification. Each compartment acts as a dedicated space for labeled cassettes, preventing misplacement while maintaining the information continuity provided by labels.
Solution Approach 2:
The tray uses color-coded identification markings on compartments to complement cassette labels. This visual coding system provides an additional layer of patient identification continuity and prevents mixing even when labels are present.
3Productivity
If multiple patient specimens are placed in a single queue area, then laboratory throughput is maintained, but the ability to identify mixing of cases by the pathologist is nearly completely absent
Solution Approach 1:
The tray divides the queue into multiple segregated compartments, each visible to the pathologist. This allows high throughput by accommodating multiple specimens while making mixing detectable through clear visual and physical separation of patient cases.
Solution Approach 2:
The tray introduces a spatial dimension to specimen organization by using vertical stacking and lateral compartmentalization. This multi-dimensional arrangement maintains throughput capacity while enabling easy detection of specimen mixing through structured positioning.
4Device complexity
If no mechanical device is used to hold patient cases together, then the system is simple and flexible, but different patient cases can accidentally be mixed resulting in specimens being mishandled
Solution Approach 1:
The tray provides simple mechanical segmentation through fixed compartments rather than complex active holding mechanisms. This low-complexity structure effectively contains specimens in designated areas, preventing mixing while maintaining system simplicity.
Solution Approach 2:
The tray's compartment structure automatically provides containment and separation without requiring active mechanical devices or complex operations. The passive geometric structure itself performs the specimen security function, minimizing device complexity while ensuring reliability.
Data Source
AI summary
A laboratory specimen tray for the organization of medical and scientific specimens for improving continuity of case/patient identification and reduction in the mislabeling or mixing of specimens between patients is provided. The specimen tray may be an elongated body of material that forms various voids for securing various types of specimen containers and associated paperwork. An upper surface of the specimen tray provides a distinct demarcation, such as one of a plurality of colors, so that two specimens of the same type are never next to each other in a laboratory setting, further preventing the possibility of specimen/patient mix ups. This separation makes sure that a cassette during sectioning by the technologist is not accidentally cut and placed on the wrong patient slide.