Split Toroid Cable Traps for Detuning-Resistant MRI Service
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Solution Overview
Problem
Existing cable traps in MRI systems are prone to detuning and require frequent replacement, posing serviceability challenges and safety risks due to detuning-induced RF burns.
Innovation Solution
A split toroid configuration for cable traps, comprising two body halves with wrapped wires and printed circuit boards, forming a self-contained magnetic field that prevents detuning and interference, allowing individual replacement without affecting adjacent traps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional single-body cable traps are used, then current suppression function is provided, but they are prone to detuning and require frequent replacement
Solution Approach 1:
The cable trap is divided into two separate body halves that can be independently removed and replaced. This segmentation allows individual trap replacement without affecting adjacent traps, improving serviceability while maintaining reliability through consistent electrical connections via the printed circuit boards
2Area of stationary object
If cable traps are placed close together to reduce space, then device compactness is improved, but detuning and interference between adjacent traps occurs
Solution Approach 1:
Printed circuit boards serve as intermediary elements between adjacent cable traps, providing isolated electrical connection points that prevent electromagnetic interference and detuning between closely spaced traps while maintaining compact cable assembly
3Reliability
If traditional cable traps are used, then current suppression is achieved, but replacement requires replacing interface and all leading traps
Solution Approach 1:
The cable trap assembly is segmented into modular units with standardized interfaces, allowing rapid replacement of individual failed traps without disturbing adjacent functional traps, significantly reducing maintenance time while preserving current suppression functionality
4Device complexity
If single-body cable trap configuration is used, then simple structure is maintained, but serviceability and individual replacement capability are reduced
Solution Approach 1:
The cable trap body is segmented into two halves that snap together, creating a simple yet modular structure that enables individual trap replacement while maintaining structural simplicity and ease of assembly
Solution Approach 2:
The split-body design with standardized printed circuit board interfaces creates a universal configuration that can be individually replaced and serviced, adding maintenance flexibility without significantly increasing structural complexity
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
Enhances patient safety, improves image quality, reduces coil temperature, and simplifies maintenance by enabling individual trap replacement, while maintaining electrical stability and reducing manufacturing costs.
Implementation Method 1
Each current cable trap is configured when the cable is generating a current to generate a self-contained magnetic field
Implementation Method 2
a first wire wrapped around the first body half from the first end to the second end... a second wire wrapped around the second body half from the third end to the fourth end
Data Source
AI summary
A current cable trap includes a first body half having a first end and a second end and a second body half having a third end and a fourth end. The first body half and the second body half are configured to be snapped together about a cable to form a toroid body. The current cable trap includes a first wire and a second wire wrapped around the first body half and the second body half, respectively. The current cable trap includes a first printed circuit board and a second printed board disposed within a first receptacle and a second receptacle, respectively, when the first body half and the second body half are snapped together. The first printed circuit board and the second printed circuit board each provide electrical connection points with wire ends of both the first wire and the second wire.