Cell Deposition Chamber with Absorbing Material
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Solution Overview
Problem
Existing methods for depositing cells on an analysis plate are complex, bulky, expensive, and inconvenient, with issues related to the time required for fixative absorption and cell deposition, particularly in systems using decantation methods.
Innovation Solution
A method involving a reception chamber with a bottom that is open and extends opposite a cell deposit zone on the analysis plate, utilizing a sheet of blotting paper as an absorption material, where the chamber is initially positioned to allow cell deposition by decantation and then moved to facilitate fixative absorption by the blotting paper after a predetermined period, typically 30 minutes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If decantation is used for cell deposition, then cell deposition homogeneity is improved, but deposition time is excessively long
Solution Approach 1:
The blotting paper is pre-positioned around the reception chamber before cell suspension is added. This preliminary arrangement of the absorption material ensures that when the chamber is moved to the second position, the fixative can be rapidly absorbed without delay, thus reducing total deposition time while maintaining homogeneity.
Solution Approach 2:
The system transitions from a static decantation process to a dynamic two-position system. The reception chamber moves between a first position (for rapid cell deposition by decantation) and a second position (for rapid fixative absorption by blotting paper). This dynamic positioning allows optimization of both deposition homogeneity and time efficiency.
2Device complexity
If simple decantation is used, then system complexity is reduced, but fixative removal time is excessively long
Solution Approach 1:
The blotting paper acts as an intermediary absorption material positioned between the reception chamber and the analysis plate. When the chamber is moved to the second position, the blotting paper rapidly absorbs the fixative through capillary action, providing a simple yet effective mechanism for rapid fixative removal without complex equipment.
3Productivity
If absorption material is placed around the chamber, then fixative absorption speed is improved, but device complexity increases
Solution Approach 1:
The blotting paper is merged with the support structure that holds the analysis plate. The absorption material is positioned to surround both the reception chamber and the analysis plate in a single integrated arrangement, eliminating the need for separate complex absorption mechanisms while achieving rapid fixative removal.
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 approach enables a quick and homogeneous deposition of cells, facilitating subsequent analysis by reducing the time needed for fixative absorption and cell settlement on the analysis plate.
Implementation Method 1
placing the chamber in a first position resting against the analysis plate, to allow deposition by decantation of the cells on the deposit zone of the plate
Implementation Method 2
the chamber is moved to a second position remote from this analysis plate to place the chamber in fluidic relationship with the absorption material to allow the absorption of the fixative by this material
Data Source
Figure 1
Figure 2
AI summary
This system for depositing cells on an assay plate (1), said cells being contained in a cellular suspension (4) comprising a fixative and said cells, said system comprising a chamber (5) for receiving the suspension placed on top of the assay plate (1), the bottom of which is open and extends opposite a cell deposition area of the plate, and a fixative-absorbing material (7) placed around the chamber and the deposition area of the plate, is characterized in that the chamber (5) is mounted so as to be movable between a first position in which it rests against the assay plate (1) in order to allow cells to be deposited by decantation onto the deposition area of the plate and a second position away from said assay plate for placing the chamber (5) in fluidic communication with the absorbing material (7) so as to allow the fixative to be absorbed by this material.