Rotating Cell Seeding Device with Structured Microwells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for generating and maintaining 3D cell aggregates face challenges such as poor reproducibility, labor intensiveness, complexity, inability to upscale, and difficulty in recovering cultures, which hinder their widespread use in drug screening and research.
Innovation Solution
A device with a cylindrical container equipped with a structured surface that allows for controlled rotation, enabling sedimentation and compacting of cells under centrifugal forces, facilitating the formation of uniform 3D cell aggregates and conditioned media production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional 2D monolayer culture methods are used, then ease of operation and simplicity are maintained, but physiological relevance and research accuracy deteriorate
Solution Approach 1:
The invention segments the culture system into modular components: a base plate with microwell arrays and removable lids with integrated filters. This segmentation allows the complex 3D culture system to be assembled and disassembled easily, maintaining operational simplicity while enabling physiologically relevant 3D cell aggregation in microwells
Solution Approach 2:
The culture plate design integrates multiple functions into a single system: microwell structures for 3D aggregation, integrated filters for medium exchange and cell harvesting, and compatibility with standard incubators and imaging systems. This multi-functionality reduces the need for multiple separate devices while maintaining physiological relevance
2Productivity
If manual methods for generating 3D cell aggregates are used, then flexibility is maintained, but productivity and scalability deteriorate
Solution Approach 1:
The microwell arrays are pre-formed with optimized geometries and dimensions before cell seeding. This preliminary preparation of the culture structure eliminates the need for manual well creation during experimentation, significantly increasing productivity while maintaining ease of operation through simple cell suspension addition
Solution Approach 2:
The system enables self-organization of cells into 3D aggregates within the microwell structures without manual intervention. Cells automatically form spheroids through their own adhesion and proliferation processes, eliminating labor-intensive manual aggregation steps while maintaining high productivity
3Reliability
If complex hydrogel-based 3D culture systems are used, then physiological relevance is improved, but device complexity and difficulty in recovery deteriorate
Solution Approach 1:
The invention extracts the essential 3D aggregation function from complex hydrogel systems and implements it through simple geometric microwell structures. This extraction maintains physiological relevance through 3D cell organization while eliminating the complexity and recovery difficulties associated with hydrogel materials
Solution Approach 2:
The culture plates with micrawell arrays are designed as disposable single-use items, eliminating the need for complex cleaning and recovery procedures. This approach maintains physiological relevance through proper 3D culture while simplifying the system by removing recovery operations entirely
4Manufacturing precision
If conventional cell seeding methods are used, then simplicity is maintained, but manufacturing precision and uniformity of 3D aggregates deteriorate
Solution Approach 1:
The micrawell structures provide localized confined spaces with specific geometric properties that guide uniform cell distribution and aggregation. Each microwell acts as a localized zone with controlled volume and surface area, ensuring consistent 3D aggregate formation without requiring complex global control mechanisms
Solution Approach 2:
The micrawell arrays are pre-manufactured with precise dimensional specifications and uniform spacing before use. This preliminary precision in structure fabrication translates directly to uniform cell aggregation outcomes, eliminating the need for complex active control systems during the seeding 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
The device enables efficient large-scale harvesting and generation of uniform 3D cell aggregates and conditioned media, improving reproducibility and scalability while reducing labor and complexity, and allowing for standard gravitational conditions for cell growth.
Implementation Method 1
The device is equipped to rotate the container around the rotation axis
Implementation Method 2
enabling sedimentation and compacting of cells under centrifugal forces
Data Source
AI summary
A device for seeding cells includes a container with a wall, a bottom and a lid. The wall extends between the bottom and the lid. The container can be equipped to be loaded with cells, in particular with cells form a cell suspension. The container defines a rotation axis. The device is further equipped to rotate the container around the rotation axis. The container includes a structured surface that can be arranged at the inner surface of the container. The structured surface has structures equipped to receive the cells. The rotation exerts a (g-)force in direction of the structured surface, such that the g-force acts perpendicular to the structured surface. The exerted force in the direction of the structured surface resembles a g-force required for sedimentation of the cells into the structures.