Robotic Electroprocessing System for Complex Scaffold Fabrication
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Solution Overview
Problem
Existing electrospinning systems are limited in size and shape of scaffolds they can produce, requiring constant spinneret-to-target distance and human calibration, and are prone to maintenance issues and interference from conductive materials.
Innovation Solution
A robotic electroprocessing system with a spinneret head, linear actuators, and a motor-driven movement system within an environmentally sealed chamber, allowing three-dimensional movement and control of the spinneret head to accommodate irregular shapes and sizes, while maintaining a constant distance and avoiding conductive interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional electrospinning systems use a fixed spinneret-to-target distance setup, then the system is simple to operate, but the scaffold size and shape are limited to only several centimeters and constant geometry
Solution Approach 1:
The patent applies dynamics by transforming the fixed spinneret-to-target distance setup into a dynamic robotic system with multiple degrees of freedom. The spinneret head is mounted on a robotic manipulator that can dynamically adjust its position in three-dimensional space, allowing the distance and orientation between spinneret and target to change continuously during the electrospinning process. This enables the production of scaffolds with varying sizes and complex geometries while maintaining process control.
Solution Approach 2:
The patent implements another dimension by adding three-dimensional movement capabilities to the traditional two-dimensional fixed setup. The robotic system allows the spinneret to move not only in the horizontal plane but also in the vertical dimension, enabling the creation of scaffolds with complex 3D geometries, irregular shapes, and varying thicknesses that were impossible with conventional fixed-distance electrospinning systems.
2Ease of manufacture
If manual calibration is performed for each run, then the system can be built inexpensively, but frequent maintenance and human intervention are required
Solution Approach 1:
The patent applies self-service by implementing automated calibration and maintenance functions within the robotic electrospinning system. The system includes automated calibration routines that can self-adjust parameters between runs without human intervention, and the robotic manipulator can automatically return to home positions and perform self-diagnostics. This reduces the need for frequent manual maintenance while keeping the system cost-effective through software-based automation rather than expensive hardware redundancy.
Solution Approach 2:
The patent implements feedback by incorporating sensors and control systems that continuously monitor the electrospinning process parameters. The system uses feedback from position sensors, voltage measurements, and process monitoring to automatically adjust operating conditions, detect anomalies, and trigger maintenance alerts. This closed-loop control enables the system to self-correct and reduce maintenance needs while maintaining affordability through intelligent control algorithms.
3Device complexity
If conductive materials are present in the chamber, then the system structure can be simplified, but interference with the electrical field is caused
Solution Approach 1:
The patent applies taking out by removing conductive materials from the electrospinning chamber environment. The chamber is designed with non-conductive walls and components, and the robotic manipulator uses non-conductive materials for parts within the chamber. This extraction of conductive elements eliminates their harmful interference with the electrical field while maintaining structural integrity through carefully selected non-conductive materials and design configurations.
Solution Approach 2:
The patent implements an intermediary approach by introducing non-conductive barriers and isolation layers between the electrical field and any necessary structural components. The chamber uses non-conductive materials as intermediaries that allow structural support while preventing electrical field interference. This mediator approach enables the presence of structural elements without the harmful effects of conductive materials.
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
Enables the production of larger, complexly shaped scaffolds with consistent fiber geometry and biocompatible materials, overcoming size and shape limitations of traditional systems and reducing maintenance needs.
Implementation Method 1
at least three linear actuators connected to the spinneret head; and a motor that drives movement of the linear actuators
Implementation Method 2
producing an electrical field between the needle and the target, thereby depositing the component onto the target
Implementation Method 3
producing an electrical field between the needle and the target
Implementation Method 4
The target, the spinneret head and the at least three linear actuators are positioned in an environmentally sealed chamber
Data Source
AI summary
The present invention includes a robotic system for the enhanced automation, manipulation, and control of electroprocessing in two or three dimensions. In one embodiment, the system includes a sealed chamber devoid of any electrical or conductive components which would interfere with the electrical field and eventual material fabrication, while still allowing for two-dimensional and three-dimensional robot motion. In certain embodiments, the system of the invention produces materials or scaffolds with complex shapes, including materials with ridges, valleys, curves, and the like, which are difficult or impossible to construct using traditional systems.