Thermal Platform for Tissue Engineering Scaffold Manufacturing
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Solution Overview
Problem
Conventional platform structures for manufacturing tissue engineering scaffolds face challenges in preventing deformation of tall scaffolds and ensuring uniform internal structure due to ambient temperature effects, limiting the height of scaffolds that can be manufactured and incurring additional costs for low-temperature environments.
Innovation Solution
A platform structure featuring a ring-shaped thermally conductive member with a centrally movable thermally conductive platform and a low-temperature generating mechanism, combined with a thermally insulating element and board, to maintain consistent low temperatures and prevent heat exchange, allowing for the production of tall scaffolds with uniform internal structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional additive manufacturing is used to manufacture tall scaffolds, then scaffold height can be increased, but ambient temperature causes deformation of the top portion and uneven internal structure
Solution Approach 1:
The platform is divided into two distinct thermal zones: a lower thermally conductive platform for freezing deposited material, and an upper thermally insulating platform for maintaining ambient temperature. This segmentation allows different portions of the manufacturing system to serve different thermal functions simultaneously, enabling tall scaffold production without top portion deformation.
Solution Approach 2:
A thermally insulating platform is introduced as an intermediary component between the liquid material deposition source and the frozen scaffold structure. This intermediary platform prevents direct thermal contact between ambient temperature sources and the growing scaffold top, thereby preventing deformation while allowing continuous material deposition.
2Length of moving object
If conventional single-platform design is used, then device complexity is reduced, but inability to prevent ambient temperature effects limits maximum scaffold height
Solution Approach 1:
The manufacturing platform is segmented into two vertically stacked platforms with distinct thermal properties. The lower platform provides thermal conduction for freezing, while the upper platform provides thermal insulation. This segmentation enables the system to overcome ambient temperature limitations and manufacture taller scaffolds despite increased structural complexity.
Solution Approach 2:
The solution transitions from a single-plane manufacturing surface to a vertical two-layer platform structure. By adding the vertical dimension with differentiated thermal zones, the system can maintain both low temperature at the deposition interface and ambient temperature at the top, thereby enabling taller scaffold production.
3Temperature
If thermally conductive platform is used alone, then freezing of liquid material is effective, but ambient temperature causes heat exchange leading to deformation
Solution Approach 1:
The thermal management system is segmented into two functional zones: a thermally conductive lower platform that actively freezes deposited material, and a thermally insulating upper platform that isolates the scaffold top from ambient temperature. This segmentation effectively blocks harmful thermal gradients while maintaining effective freezing at the deposition interface.
Solution Approach 2:
The thermally insulating platform serves as a thermal intermediary that blocks heat transfer from the ambient environment to the scaffold structure. This intermediary layer prevents harmful thermal interference while allowing the thermally conductive platform below to perform its freezing function effectively.
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 platform structure effectively prevents deformation of tall scaffolds and ensures uniform internal structure distribution, enabling the manufacturing of scaffolds taller than 1 cm without ambient temperature interference, while reducing costs associated with low-temperature environments.
Implementation Method 1
a ring-shaped thermally conductive member (20)... a thermally conductive platform (30)... a low temperature generating mechanism (50) connected to the ring-shaped thermally conductive member (20) to cool down the ring-shaped thermally conductive member (20)
Implementation Method 2
allowing the liquid material to freeze as soon as the liquid material comes into contact with the low-temperature thermally conductive platform
Implementation Method 3
the liquid material deposits on the frozen liquid material to form a tall scaffold
Implementation Method 4
combined with a thermally insulating element and board, to maintain consistent low temperatures and prevent heat exchange
Data Source
AI summary
A platform structure for manufacturing a scaffold for use in tissue engineering, comprising a frame; a ring-shaped thermally conductive member fixedly disposed in the frame; a thermally conductive platform centrally movably disposed in the ring-shaped thermally conductive member and having edges in direct contact with inner walls of the ring-shaped thermally conductive member, wherein the thermally conductive platform and the ring-shaped thermally conductive member together define a space of a variable depth; a vertically movable mechanism connected to a bottom of the thermally conductive platform and adapted to drive the thermally conductive platform to sink and thus increase gradually the depth of the space; and a low temperature generating mechanism connected to the ring-shaped thermally conductive member and the thermally conductive platform to cool down the ring-shaped thermally conductive member and the thermally conductive platform, to prevent deformation and ensure uniform dimensions of tall scaffolds.