Electrospinning Apparatus with Rotatable Collector for Multi-Dimensional Scaffolds
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Solution Overview
Problem
Traditional electrospinning methods produce flat, densely packed scaffolds with poor mechanical properties and limited porosity, making it difficult to achieve multi-dimensional structures like three-dimensional cotton-like fluffy scaffolds and one-dimensional continuous yarns using a single device.
Innovation Solution
An electrospinning apparatus with a rotatable collector unit configured with electrodes and tines forms an open structure, allowing for the production of two or three-dimensional scaffolds and one-dimensional yarns by adjusting the density of the solution or melt and collector diameter to control the fiber deposition pattern, enabling the creation of varied geometries such as umbrella-like, hemispherical, or cone-like structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional electrospinning is used to produce scaffolds, then the process is simple and effective for producing nano or micro-scale fiber materials, but the resulting scaffolds have tightly packed layers with poor mechanical properties and limited porosity
Solution Approach 1:
The patent transitions from traditional two-dimensional flat scaffolds to three-dimensional multi-dimensional structures by introducing a rotatable collector unit with electrodes arranged in multiple dimensions. This allows fiber deposition in varied geometries including umbrella-like, hemispherical, cone-like, and cylindrical structures, significantly improving mechanical strength and porosity while maintaining the simplicity of the electrospinning process
Solution Approach 2:
The patent employs a rotatable collector unit that can change its orientation and position during the electrospinning process. This dynamic configuration allows the same apparatus to produce different multi-dimensional structures (2D mats, 3D fluffy scaffolds, continuous yarns) by adjusting rotation speed, collector geometry, and electrode arrangement, thereby improving mechanical properties without complicating the manufacturing process
2Adaptability or versatility
If traditional electrospinning produces flat scaffolds, then the process is straightforward, but it cannot generate varied geometries like three-dimensional cotton-like fluffy scaffolds or one-dimensional continuous yarns
Solution Approach 1:
The patent designs a universal electrospinning apparatus with a rotatable collector unit that can produce multiple types of structures (two-dimensional mats, three-dimensional fluffy scaffolds, one-dimensional continuous yarns, and core-shell yarns) using the same basic equipment. By adjusting collector geometry, electrode arrangement, and rotation parameters, the device achieves high versatility without requiring multiple separate apparatuses, thus not increasing overall device complexity
Solution Approach 2:
The patent introduces multi-dimensional electrode arrangements and rotatable collector configurations that enable the generation of varied geometries in different spatial dimensions. The electrodes can be arranged in umbrella-like, hemispherical, cone-like, or cylindrical patterns, allowing the same device to create diverse structures from 2D to 3D to 1D formats, significantly enhancing adaptability
3Shape
If collector diameter is increased to generate three-dimensional scaffolds, then the whipping region is minimized and scaffold is contained within collector, but the device size and complexity increase
Solution Approach 1:
The patent uses a rotatable collector unit that can dynamically adjust its configuration during operation. By controlling rotation speed and collector geometry, the system can transition between producing 2D mats and 3D fluffy scaffolds using the same apparatus. This dynamic capability allows the device to achieve varied shapes without permanently increasing in size or complexity, as the same collector can be reconfigured for different structural outcomes
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 method effectively generates multi-dimensional structures with enhanced mechanical strength and porosity, suitable for biomedical and tissue engineering applications, as demonstrated by the production of two-dimensional mats, three-dimensional fluffy scaffolds, and core-shell yarns with improved tensile strength and biocompatibility.
Implementation Method 1
this technology involves formation of a fine jet of a solution or melt of a polymer or other material in a high-voltage electric field. The jet is ejected from a suitable injector, from which solvent evaporates, leaving behind the fiber as the jet solidifies
Implementation Method 2
The jet is ejected from a suitable injector, from which solvent evaporates, leaving behind the fiber as the jet solidifies
Implementation Method 3
Fiber from the source is then deposited into the collector using the potential difference to generate a scaffold
Data Source
AI summary
Electrospinning apparatus and method for producing multi-dimensional structures such as one-dimensional continuous yarns, two-dimensional mats and three-dimensional cotton-like fluffy scaffolds is disclosed. Further, electrospinning apparatus and method with single collector geometry for producing multi-dimensional structures and core-sheath yarns are disclosed.