Detachable Flow Channel for Cell Shear Stress Evaluation
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Solution Overview
Problem
Existing cell evaluation methods face challenges in efficiently and uniformly evaluating the response of adhesive cells to liquid flow, particularly in closed micro flow channels, where compartmentalization and standardization of cell arrangement are difficult, and cells may be damaged or cultured in non-uniform environments.
Innovation Solution
A method involving culturing cells on a culture surface with a detachable flow channel, where cells or cell aggregates are arranged in a pattern and subjected to a controlled liquid flow, allowing for linear or constant shear stress application, using a flow channel member with a groove that can be easily attached and detached, and utilizing alignment marks for precise registration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cells are introduced into a closed micro flow channel for evaluation, then liquid flow can be applied to the cells, but it becomes difficult to compartmentalize and arrange multiple cells or cell aggregates along the flow channel
Solution Approach 1:
The invention divides the evaluation system into separate functional components: a culture substrate with multiple cell seeding regions and a flow channel that can be detachably attached. This segmentation allows independent optimization of cell arrangement (on the substrate) and flow application (through the channel), making it easier to compartmentalize and arrange multiple cells along the flow channel direction.
Solution Approach 2:
The flow channel is extracted as a separate, detachable component from the culture substrate. This extraction allows the flow channel to be independently positioned and attached to the culture substrate, facilitating easy compartmentalization and arrangement of cells without the constraints of a closed micro flow channel structure.
2Ease of operation
If cells are introduced into a closed micro flow channel, then liquid flow can be applied, but cells may be damaged during introduction
Solution Approach 1:
Cells are seeded onto the culture substrate in advance, allowing them to adhere and stabilize before the flow channel is attached. This preliminary action eliminates the need to introduce cells into the flow channel, thereby preventing cell damage that would occur during introduction into a closed micro flow channel.
3Ease of operation
If a closed micro flow channel is used for cell culture, then liquid flow can be applied, but culture medium becomes non-uniform creating different environments
Solution Approach 1:
The system separates the flow channel from the culture substrate, allowing the culture medium to remain uniform in the open culture environment while still enabling controlled liquid flow application through the detachable flow channel. This segmentation prevents the non-uniform medium distribution that occurs in closed micro flow channels.
4Measurement precision
If a single layer of endothelial cells is targeted for treatment, then specific cell responses can be observed, but multiple targets cannot be collectively treated efficiently
Solution Approach 1:
The culture substrate is designed with multiple cell seeding regions that can simultaneously accommodate and treat multiple cell types or aggregates. The detachable flow channel can be attached to provide liquid flow to all regions simultaneously, enabling collective treatment of multiple targets while maintaining the ability to observe specific cell responses in each region.
Solution Approach 2:
Multiple cell seeding regions are merged into a single culture substrate that can be simultaneously treated with liquid flow through the detachable flow channel. This combining approach allows multiple targets to be collectively treated efficiently while maintaining the precision to observe responses in each region.
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 simple and efficient evaluation of adhesive cells' response to liquid flow, minimizing cell damage and ensuring a standard culture environment, allowing for precise quantification and standardization of cell states and adhesive forces.
Implementation Method 1
allowing a liquid to flow through the flow channel to provide a liquid flow to each of the plurality of cells or the plurality of cell aggregates
Data Source
AI summary
A cell evaluation method according to the disclosed technology includes culturing cells such that a plurality of cells or a plurality of cell aggregates are arranged on a culture surface, installing a flow channel attachable to and detachable from the culture surface, and allowing a liquid to flow through the flow channel to provide a liquid flow to each of the plurality of cells or the plurality of cell aggregates.