Microfluidic Cell Seeding Prevents Air Bubbles
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Solution Overview
Problem
Air bubbles introduced during the detachment and attachment of pipes in cell seeding methods for microfluidic devices interfere with the culture medium supply, leading to improper cell culture.
Innovation Solution
A cell seeding method and system that involves filling the flow channel with a culture medium first, followed by introducing the cell suspension from the opposite port side with the pipe connected, thereby preventing air bubbles from entering the flow channel during the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pipe is detached and reconnected to the inlet of the flow channel during cell suspension introduction, then the cell suspension can be introduced from the inlet side, but air bubbles are likely to be included in the pipe and introduced into the flow channel
Solution Approach 1:
The patent applies preliminary action by filling the flow channel with culture medium before introducing the cell suspension. This preliminary filling of the flow channel with culture medium ensures that any air bubbles are eliminated before the cell suspension is introduced, preventing air bubbles from being present when cells are seeded. The pipe is also kept connected during this process to avoid introducing air bubbles through detachment and reconnection operations.
2Ease of operation
If the cell suspension is introduced from the inlet side of the flow channel, then the introduction process is straightforward, but air bubbles caused by pipe detachment and attachment cannot be removed
Solution Approach 1:
The flow channel is preliminarily filled with culture medium through the inlet before cell suspension introduction. This preliminary action ensures the flow channel is free of air bubbles before cells are introduced, maintaining both operational simplicity and cultural reliability.
Solution Approach 2:
The pipe remains continuously connected to the inlet throughout the process of filling the flow channel with culture medium and introducing the cell suspension. This continuous connection eliminates the need for detachment and reconnection operations, preventing air bubbles from being introduced while maintaining the ability to introduce cell suspension from the inlet side.
3Reliability
If air bubbles are present in the flow channel during cell culture, then the culture medium cannot be properly supplied to the cells, but preventing air bubbles requires additional filling steps
Solution Approach 1:
The flow channel is preliminarily filled with culture medium through the inlet before cell suspension introduction. This preliminary filling action ensures the flow channel is free of air bubbles before cells are introduced, guaranteeing proper culture medium supply to cells while integrating smoothly into the existing cell seeding workflow.
Solution Approach 2:
The continuous connection of the pipe to the inlet throughout the filling and cell introduction process eliminates air bubble introduction, ensuring reliable culture medium supply without requiring additional air bubble removal steps or complex device modifications.
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 effectively suppresses the influence of air bubbles, ensuring proper cell culture by removing air bubbles caused by pipe detachment and attachment, and allowing for reliable cell seeding without disrupting the cell culture area.
Implementation Method 1
a step of filling a flow channel of a cell culture device with a culture medium
Implementation Method 2
a step of introducing a cell suspension into the flow channel from the second port side of the flow channel
Data Source
AI summary
A cell seeding method according to this invention includes a step of filling a flow channel of a cell culture device with a culture medium, the cell culture device including a first port that is selectively fluidly connected to a culture medium supplier through a pipe, a second port, and the flow channel that is provided between the first and second ports; and a step of introducing a cell suspension into the flow channel from the second port side of the flow channel with the first port being connected to the pipe after the step of filling the flow channel with the culture medium.