Cell Culture Screen Printing for Low-Shear High-Throughput Patterning
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Solution Overview
Problem
Existing methods for producing and arranging cell cultures and agglomerations face challenges of reduced productivity and increased cell damage due to high shear stress during the filling or application process, which can lead to reduced survival rates and shortened study times.
Innovation Solution
A method involving the use of a printing medium containing living cells, printed through a printing screen or stencil with designed openings and impermeable areas, reduces shear stress and allows for high productivity by enabling multiple defined print areas in a single step, using screen or stencil printing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pipettes or pipette systems are used to fill cell carriers, then cells can be applied to carriers, but high shear stress is generated which reduces cell survival rate
Solution Approach 1:
The patent replaces the mechanical pipetting system with a printing-based application system. The printing method uses a printing head with nozzles that deposit cell-containing droplets onto the carrier surface through controlled dispensing, avoiding the high shear stresses generated by pipette aspiration and dispensing mechanisms.
Solution Approach 2:
The patent changes the physical parameters of the cell application process by using controlled droplet deposition instead of liquid flow through narrow pipette tips. The printing system allows precise control of droplet size, deposition speed, and positioning, thereby reducing mechanical stress on cells while maintaining application precision.
2Ease of operation
If pipette systems are used for filling cell carriers, then cells can be applied, but many individual steps are required which increases process time
Solution Approach 1:
The patent merges multiple individual cell application operations into a single printing process. The printing head can deposit multiple droplets containing cells onto different locations of the carrier in one continuous operation, eliminating the need for repeated pipetting steps and significantly reducing overall process time.
Solution Approach 2:
The printing system enables continuous deposition of cell-containing droplets across the carrier surface without the interruption and repositioning required by pipette-based methods. The printing head can systematically traverse the carrier and deposit cells in a continuous, automated sequence, maximizing productivity.
3Ease of operation
If traditional filling methods are used, then cells can be applied to carriers, but the process takes too long reducing the remaining study time for cell culture
Solution Approach 1:
The printing system allows pre-preparation of cell-containing droplets to be deposited onto carriers in advance. Multiple carriers can be processed in parallel or in rapid succession, enabling researchers to prepare cell cultures ahead of time and maximize the available study period for subsequent experiments.
Data Source
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AI summary
Method for generating and/or arranging cell cultures and/or cell agglomerations, in particular for carrying out medical and/or pharmacological investigations, in which a printing medium containing living cells is provided and in which the printing medium is printed through a printing screen and/or a printing stencil.