High-Pressure Freezing Cartridge Transfer From Incubation Chamber
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Solution Overview
Problem
The transfer of samples from incubation chambers to high-pressure freezing devices is complicated and time-consuming, disrupting environmental conditions and preventing rapid fixation of cell states, which is essential for preserving physiological events for electron microscopical investigation.
Innovation Solution
A method where a middle plate of a high-pressure freezing cartridge is attached to the bottom of an incubation chamber using an adhesive, allowing for a simple detachment and transfer of the sample to the high-pressure freezing device, minimizing disturbance to the sample's environment and reducing the time lag between incubation and freezing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If samples are transferred from incubation chambers to high-pressure freezing devices using conventional methods, then the sample can be fixed for electron microscopy, but the transfer process is complicated and time-consuming, disrupting environmental conditions and preventing rapid fixation of cell states
Solution Approach 1:
The middle plate of the high-pressure freezing cartridge is merged with the incubation chamber bottom through adhesive attachment, creating an integrated structure that eliminates the need for separate transfer steps. The sample remains on the middle plate throughout incubation and is already positioned for freezing when detached.
Solution Approach 2:
The middle plate is prepared and attached to the incubation chamber bottom in advance, before the actual freezing process. This preliminary positioning ensures that when detachment occurs, the sample is already in the correct position for rapid transfer to the freezing device, eliminating delays.
2Reliability
If samples are transferred using conventional methods, then fixation can be achieved, but environmental conditions are disrupted during transfer
Solution Approach 1:
By combining the middle plate with the incubation chamber bottom, the sample remains in a stable environmental setting throughout the incubation period. The integrated structure ensures continuous environmental control without interruptions from transfer operations.
Solution Approach 2:
The method skips the conventional multi-step transfer process by having the sample already positioned on the middle plate within the incubation chamber. When freezing is required, the pre-positioned middle plate can be rapidly detached and transferred, rushing through the critical transition period.
3Productivity
If conventional transfer methods are used, then samples can be processed, but the complication and time consumption prevent rapid fixation of physiological events
Solution Approach 1:
The merging of the middle plate with the incubation chamber creates a streamlined system where the sample is pre-positioned for freezing. This integration simplifies the operation to a single detachment action rather than multiple complex transfer steps, improving both efficiency and ease of operation.
Solution Approach 2:
The middle plate serves dual functions: it acts as both the incubation substrate and the freezing cartridge component. This self-service design eliminates the need for separate transfer operations, as the same structure serves both purposes throughout the process.
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
This method enables rapid and efficient transfer of samples, preserving the environmental conditions and allowing for the observation of rapid physiological changes, thereby improving the ultrastructural preservation of biological samples during high-pressure freezing.
Implementation Method 1
the middle plate is attached to a lower surface of a bottom of the incubation chamber by an adhesive
Data Source
Figure 1
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AI summary
A method including one or more steps of a procedure for preparing a microscopic sample (1) for a high-pressure freezing process is provided, wherein the sample (1) is provided using an arrangement comprising a middle plate (33) of a high-pressure freezing cartridge (30) and an incubation chamber (100), wherein the middle plate (33) is attached to a lower surface of a bottom (120) of the incubation chamber (100) by an adhesive and detachable from the incubation chamber (100) by effecting a relative movement between the middle plate (33) and the incubation chamber (100), wherein the sample (1) is provided on an enclosing element (37) which is fitted into an opening (36) of the middle plate (33), and wherein, when the sample (1) is to be subjected to the high-pressure freezing process, the relative movement between the middle plate (33) and the incubation chamber (100) is effected, thereby detaching the middle plate (33) with the sample (1) from the incubation chamber (100). Means to implement the method are also part of the present invention.