Automated Bioreactor for Uniform TAI Seeding
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Solution Overview
Problem
Traditional methods for cultivating osteogenic scaffolds for tissue engineering are labor-intensive and lack robust process control, necessitating a cost-efficient and simplified mechanism for seeding and culturing therapeutic active ingredients (TAIs) while maintaining sterility.
Innovation Solution
An automated system comprising a first chamber for the scaffold, a TAI storage device, a TAI media chamber, and a gas inlet, with a flow circuit and valves regulated by a processor to deliver TAIs, TAI media, and gas, along with a scaffold turner for uniform seeding and culturing, enabling precise control over the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual methods are used for cultivating scaffolds, then flexibility and adaptability are maintained, but labor intensity increases and process control becomes less robust
Solution Approach 1:
The cultivation system is divided into separate functional modules: a scaffold holder for positioning, a media reservoir for nutrient delivery, and a bioreactor chamber for cultivation. This segmentation allows each component to perform its specific function efficiently while reducing overall system complexity through modular design.
Solution Approach 2:
The bioreactor system is designed to handle multiple scaffold types and cultivation conditions through adjustable parameters. The media delivery system can accommodate different nutrient compositions, and the scaffold holder can position various scaffold geometries, making the system universally applicable to different tissue engineering applications.
2Productivity
If manual operations are performed for seeding and culturing, then ease of operation is maintained, but productivity decreases and sterility control becomes difficult
Solution Approach 1:
The system incorporates automated media delivery where the bioreactor automatically replenishes nutrients to the scaffold without manual intervention. The scaffold holder automatically positions the scaffold for optimal media exposure, and the system maintains sterile conditions through integrated filtration and sealed connections, enabling continuous productive operation.
3Manufacturing precision
If traditional manual methods are used, then device complexity remains low, but manufacturing precision and uniformity of TAI distribution deteriorate
Solution Approach 1:
The scaffold holder is designed to position the scaffold at a consistent optimal distance from the media reservoir outlet, ensuring uniform media and TAI distribution across the scaffold surface. The bioreactor chamber maintains consistent pressure and flow conditions, creating equipotential conditions that promote homogeneous TAI seeding throughout the scaffold structure.
Data Source
AI summary
A system for seeding therapeutic active ingredients (TAIs) onto a porous scaffold includes a first chamber for accommodating the scaffold, a TAI storage device for storing TAIs, at least one second chamber for storing TAI media, and a gas inlet for receiving gas from a compressed source. A flow circuit is coupled to the first chamber, the TAI storage device, the second chamber and the gas inlet for delivering the TAIs, the TAI media and the gas to the scaffold. A pump pumps at least one of the TAIs, the TAI media and the gas in the flow circuit. The system also includes a processor that regulates the delivery of the TAIs, the TAI media and the gas to the scaffold via a plurality of valves.