Tissue Slide Caddy for Precise Frozen Specimen Embedding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cryo-embedding tools for tissue preparation in frozen sectioning are limited by compatibility issues with different cryostat models and are cumbersome, reducing efficiency in time-sensitive diagnostic settings.
Innovation Solution
A versatile slide caddy that accommodates various chuck sizes and standard microscope slides, ensuring compatibility with most cryostats, and facilitates stable, precise positioning of tissue specimens for uniform embedding and transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If proprietary chucks with precise leveling are used, then tissue embedding precision is improved, but device complexity and compatibility restrictions increase
Solution Approach 1:
The slide caddy is designed with a universal interface that accommodates multiple chuck sizes (20mm, 25mm, 30mm, 35mm, 40mm, 45mm) and is compatible with various cryostat models including Leica CM1520, CM3050, CM3200, and others. This multi-functional design eliminates the need for proprietary leveling procedures while maintaining embedding precision across different systems.
Solution Approach 2:
The slide caddy acts as an intermediary device between the cryostat chuck and the tissue specimen. It provides a standardized platform that interfaces with different chuck types, eliminating the need for direct compatibility between proprietary chuck designs and cryostat models. The caddy's standardized interface serves as a mediator that maintains precision while enabling versatility.
2Device complexity
If standard embedding wells are used, then device simplicity is improved, but embedding precision and control deteriorate
Solution Approach 1:
The slide caddy divides the embedding process into distinct functional zones: a chilled surface for tissue placement, a standardized interface for chuck attachment, and a platform for slide positioning. This segmentation allows each component to perform its specific function optimally while maintaining overall simplicity. The separation of the chilled surface from the chuck interface enables independent optimization of both simplicity and precision.
Solution Approach 2:
The slide caddy utilizes temperature parameter changes by incorporating a chilled surface that maintains low temperature during the embedding process. This temperature control enables precise embedding without requiring complex active cooling mechanisms, as the chilled surface naturally maintains the required thermal conditions for tissue stabilization and embedding precision.
3Device complexity
If manual positioning is used, then device simplicity is improved, but alignment accuracy and reproducibility deteriorate
Solution Approach 1:
The slide caddy is designed to be self-aligning through its standardized interface geometry. The chuck interface and slide platform are configured with fixed dimensional relationships that automatically ensure proper alignment when components are assembled. This self-service alignment eliminates the need for manual positioning adjustments while maintaining high alignment accuracy and reproducibility across different users and sessions.
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
Enhances efficiency and accuracy in tissue preparation by minimizing human-induced variability and user errors, enabling consistent alignment and reproducible transfers across different cryostat systems.
Implementation Method 1
the slide caddy can be used with slides... for frozen tissue preparation... frozen sectioning
Data Source
AI summary
A device and method for preparing frozen tissue specimens are disclosed. The device includes a solid block having a top surface and a bottom surface, with two parallel side walls extending upward from the top surface. A slotted groove is formed in the middle of the solid block and extends from the top surface to the bottom surface to receive a specimen chuck, such that a head of the chuck rests on the top surface. Top edges of the side walls support a tissue slide containing an encapsulated specimen. The device may include finger grooves for manual handling and is preferably made of a heat-conducting material to assist in rapid freezing. The method involves placing the specimen chuck in the groove, depositing a freezing medium over it, and positioning the tissue slide so that the specimen contacts the freezing medium for effective specimen preparation.