Apical Insert for Controlled Cell Culture Flow
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Solution Overview
Problem
Conventional cell culture inserts, such as hanging cell culture inserts, face challenges in controlling conditions at the apical domain, leading to exposure to contaminants and uneven fluid distribution, which can disturb cells and fail to maintain precise physiological conditions like oxygen gradients.
Innovation Solution
An apical insert is designed to extend into the cell culture insert, controlling fluid flow with inlet and outlet channels, and optional sensors to maintain a sealed environment, ensuring even fluid distribution and precise control of biological conditions like oxygen tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional cell culture inserts are used with direct fluid application to the apical surface, then fluid delivery is simple, but fluid distribution is uneven and cells are physically disturbed
Solution Approach 1:
The device segments the fluid delivery system into multiple inlet channels distributed across the insert base, each feeding fluid to different regions of the apical surface. This segmentation allows parallel fluid delivery to multiple locations, ensuring uniform distribution across the entire cell culture area while maintaining simple operation through a single base unit.
Solution Approach 2:
The insert base acts as an intermediary component between the fluid source and the apical surface. It contains internal channels that transport fluid from inlet ports to distributed outlet openings, mediating the fluid delivery process to achieve even distribution without direct application from above, thereby avoiding cell disturbance.
2Ease of operation
If the apical domain is exposed for manipulation and media provision, then access is easy, but contamination risk increases
Solution Approach 1:
The device extracts the need for direct exposure of the apical domain by providing access points on the insert base rather than on the apical surface itself. Fluid can be delivered through the base channels without opening or exposing the apical environment, thereby maintaining a closed system that prevents contamination while still allowing media provision.
Solution Approach 2:
The base structure serves as an intermediary interface for all manipulations. Instead of directly accessing the apical domain, users interact with inlet ports and controls on the base, which then deliver fluids through sealed channels. This intermediary approach maintains the isolation of the apical environment from external contaminants.
3Manufacturing precision
If specialized integrated cell culture systems are used for precise fluid control, then fluid flow control is precise, but device complexity and incompatibility with standard equipment increase
Solution Approach 1:
The device is designed as a universal insert base that can be adapted to work with various cell culture insert types and standard laboratory equipment. The base contains standardized inlet ports and channel configurations that can accommodate different fluid sources and cell culture formats, providing precise fluid control without requiring a fully integrated specialized system.
Solution Approach 2:
The device segments the complex fluid control function into a separate base module that can be independently designed and manufactured. This modular approach allows precise internal channel geometry for controlled fluid distribution while keeping the overall system simple and compatible with existing cell culture inserts and equipment.
4Ease of operation
If conventional inserts are used without sealed environment, then operation is simple, but oxygen gradient control and physiological condition precision are compromised
Solution Approach 1:
The device extracts the sealing function from the overall system by incorporating gaskets or sealing elements directly into the base structure. This creates a sealed environment around the cell culture insert without complicating the operation, as the sealing is integrated into the single base component that users interact with during setup and operation.
Data Source
AI summary
A device for controlling apical flow to a cell culture includes an apical insert that defines at least one inlet channel extending from an inlet port to an apical feed port and at least one outlet channel extending from an apical effluent port to an outlet port. The apical insert includes a projecting portion configured to extend into a cell culture insert to a depth that is less than a depth of the cell culture insert, and a contact surface configured to maintain a spatial relationship between the projecting portion and the cell culture insert.