MRI Gradient Coil Additive Manufacturing with Integrated Cooling
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Solution Overview
Problem
The manufacturing of gradient coil assemblies for MRI systems is prone to structural weaknesses and manufacturing defects due to costly and error-prone manual processes, which can lead to reduced durability and precision.
Innovation Solution
The use of additive manufacturing techniques, such as electron beam deposition, laser powder deposition, or ultrasonic consolidation, to automate the construction of gradient coil assemblies, incorporating cooling channels and other features, thereby enhancing precision and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual processes are used to manufacture gradient coil assemblies, then flexibility and adaptability are maintained, but manufacturing precision and reliability deteriorate due to human error
Solution Approach 1:
The patent replaces manual mechanical assembly processes with automated additive manufacturing systems. The gradient coil layers are constructed layer-by-layer using automated deposition processes (electron beam deposition, laser powder deposition, or ultrasonic consolidation), eliminating human error in layer alignment and positioning while maintaining the flexibility to create complex geometries including integrated cooling channels.
2Productivity
If manual assembly processes are used, then process adaptability is maintained, but productivity and manufacturing time worsen due to labor-intensive operations
Solution Approach 1:
The patent merges multiple manufacturing operations into a single additive manufacturing process. The gradient coil layers, cooling channels, and structural components are all constructed in one integrated process, eliminating the need for separate assembly steps and significantly improving productivity while the automated system manages the process complexity.
3Temperature
If cooling channels are added to gradient coil assemblies, then thermal management is improved, but structural strength and durability worsen due to stress concentrations
Solution Approach 1:
The cooling channels are merged into the gradient coil structure during additive manufacturing. The channels are formed as integral parts of the deposited layers, eliminating stress concentrations that would occur with post-manufacturing modifications or separate cooling channel assemblies, while maintaining effective thermal management.
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
This approach reduces manufacturing time, enhances precision, and improves the reliability of gradient coil assemblies by automating the layer-by-layer construction of gradient coils with integrated cooling channels, leading to more durable and efficient MRI systems.
Implementation Method 1
The use of additive manufacturing techniques, such as electron beam deposition, laser powder deposition, or ultrasonic consolidation, to automate the construction of gradient coil assemblies
Implementation Method 2
The use of additive manufacturing techniques, such as electron beam deposition, laser powder deposition, or ultrasonic consolidation, to automate the construction of gradient coil assemblies
Implementation Method 3
The use of additive manufacturing techniques, such as electron beam deposition, laser powder deposition, or ultrasonic consolidation, to automate the construction of gradient coil assemblies
Data Source
AI summary
A method of manufacturing includes producing a gradient coil assembly having one or more cooling channels for a magnetic resonance imaging system by a process that includes printing a cooling channel template having a first end, a second end, and a hollow passage extending between the first end and the second end, disposing a dielectric material over at least a portion of the cooling channel template to generate a dielectric layer having the cooling channel template, and removing the cooling channel template from the dielectric layer to thereby produce the one or more cooling channels within the dielectric layer such that the one or more cooling channels have a pattern corresponding to a geometry of the cooling channel template.