Slide Heating Apparatus Uniform Temperature Profile
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Solution Overview
Problem
Current specimen processing methods for biological samples face challenges such as inconsistent processing due to manual techniques, contamination, excessive reagent usage, and inefficient diffusion of reagents into tissue samples, leading to suboptimal staining results and high costs.
Innovation Solution
A slide heating apparatus with a support element and heater that delivers thermal energy non-uniformly to compensate for evaporation losses, maintaining a substantially uniform temperature profile across the specimen-bearing surface, and a specimen processing system that automates the handling and processing of slides with controlled reagent application and evaporation management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual techniques are used to apply dyes or reagents to specimens, then individual customization is possible, but processing consistency deteriorates due to individual techniques among technicians
Solution Approach 1:
The system enables automated self-service processing where the specimen processing apparatus automatically applies reagents, controls heating, and manages timing without manual intervention, eliminating technician variability while maintaining standardized processing protocols
Solution Approach 2:
The system precisely controls processing parameters including temperature (via heating apparatus), reagent application timing and volume, and incubation conditions, transforming manual approximate techniques into controlled parameter-based processing that ensures consistency
2Productivity
If open baths are used to immerse specimens in liquids, then batch processing is enabled, but liquid carryover between containers causes contamination and degradation
Solution Approach 1:
The system extracts specimens from open batch baths and processes them individually in controlled environments, removing the source of carryover contamination while maintaining efficient processing through automated sequencing
Solution Approach 2:
The system introduces controlled liquid delivery mechanisms as intermediaries between reagent sources and specimens, replacing direct immersion in open baths with precise metered application that prevents cross-contamination between processing steps
3Device complexity
If conventional heating is applied uniformly across the slide, then simple control is achieved, but non-uniform heat losses from evaporation cause temperature variations
Solution Approach 1:
The heating apparatus applies differentiated local heating zones across the slide surface, with enhanced heating at edges and reduced heating at the center, compensating for location-specific evaporative losses and achieving uniform overall temperature distribution
Solution Approach 2:
The system incorporates temperature sensing and feedback control mechanisms that monitor actual slide temperature distribution and dynamically adjust heating output to maintain uniform temperature, transforming simple open-loop heating into controlled closed-loop temperature management
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures consistent and efficient specimen processing with reduced reagent usage, minimized contamination, and improved staining efficiency by maintaining precise temperature control and optimizing reagent diffusion, thereby enhancing processing consistency and reducing costs.
Implementation Method 1
The heater is coupled to the support element. The slide heating apparatus is configured to deliver thermal energy non-uniformly across the support surface to the back side of the slide via conduction
Implementation Method 2
non-uniform heat losses associated with evaporation of a liquid on the specimen-bearing surface
Data Source
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AI summary
A specimen processing system is capable of processing specimens carried on slides. The specimen processing system can sequentially deliver slides and opposables to specimen processing stations. The specimen processing stations can use the opposables to apply a series of liquids to the specimens. The applied liquid can be moved along the slide using capillary action while the specimen processing stations control the processing temperatures.