Sterile 3D Printing Chamber with Aseptic Connectors
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Solution Overview
Problem
The challenge lies in maintaining sterile conditions during the formation, coating, and manipulation of three-dimensional objects, particularly when using biochemical materials, as existing methods require significant effort and apparatus to ensure sterility.
Innovation Solution
A sterilizable three-dimensional printing device with a printer assembly that includes a printing head, platform, and driving mechanism, allowing for relative displacement along multiple degrees of freedom, enclosed in a sterilizable housing with aseptic connectors, enabling sterile manufacturing and coating within a single-use, disposable system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manufacturing operations are performed under sterile conditions using existing methods, then sterility is maintained, but device complexity and effort required increase significantly
Solution Approach 1:
The system is divided into separable sterile and non-sterile zones. The sterile chamber contains only essential components (printing head, platform, driving mechanism) while external components (material supply, control systems) remain outside. This segmentation reduces internal complexity while maintaining sterility through defined boundaries.
Solution Approach 2:
Aseptic connectors serve as intermediaries between sterile and non-sterile zones, enabling material transfer without compromising sterility. These connectors act as controlled interfaces that simplify the overall system by providing standardized connection points rather than requiring complex sterile barriers throughout.
2Reliability
If a sterilizable enclosed system is used, then sterility is ensured, but ease of operation decreases due to sterilization requirements
Solution Approach 1:
The printer assembly is designed as a single-use disposable component that can be sterilized once and then discarded after use. This eliminates the need for repeated sterilization operations, making the system easy to operate while ensuring sterility during the manufacturing process. The disposable nature compensates for the initial sterilization effort.
3Adaptability or versatility
If multiple degrees of freedom are implemented for printing, then manufacturing capability is improved, but device complexity increases
Solution Approach 1:
The driving mechanism for multiple degrees of freedom is integrated into a unified system within the sterile chamber, combining motion control functions into a compact arrangement. This merging reduces the number of separate components and simplifies the overall structure while maintaining full printing capabilities.
Data Source
AI summary
A manufacturing assembly has at least a sterilizable chamber containing at least one of a three-dimensional printing device (additive manufacturing), a Computer Numerical Controlled (CNC) finishing head (subtractive manufacturing), a vacuum-forming unit, an injection-molding unit, a laser-cutting unit, a ultrasonic-welding unit, a robotic arman analysis device, a sampling device or a combination thereof. A plurality of individual sterilizable chambers may be aseptically connected into a network of sterilizable chambers that provides additional functionality for the manufacturing assembly. A sterilizable printer assembly may include at least one printing head, a printing platform, and a driving mechanism adapted to perform a movement of the at least one printing head relative to the printing platform along three degrees of freedom; a printer housing enclosing the printer assembly in a sterile manner, at least one aseptic connector fluidly connected to a corresponding one of the at least one printing head.