Medical Handle Cable Routing With Ferrite Bead Noise Suppression
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Solution Overview
Problem
Medical devices with flexible cable bundles are susceptible to noise interference, which can be exacerbated by the routing and handling of cables, particularly in medical imaging catheters.
Innovation Solution
The medical device incorporates a flexible elongate cable bundle that passes through an electrical noise suppression member, such as a ferrite bead, within the handle, with the shield layer removed from the cable bundle to minimize noise interference, and the cable is folded in a organized manner, optionally, and the cable is routed to suppress electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cable bundle is routed through the handle without removing the shield layer, then the cable structure remains intact and easier to assemble, but electromagnetic interference and noise increase
Solution Approach 1:
The cable bundle is divided into segments with different shielding configurations. The shield layer is removed from specific portions of the cable that pass through the ferrite bead, while other portions retain their shielding. This segmentation allows selective application of noise suppression where most needed while maintaining overall cable integrity and ease of assembly.
Solution Approach 2:
Different parts of the cable bundle have different shielding characteristics. The regions passing through the ferrite bead have the shield removed to maximize noise suppression effectiveness, while other regions maintain full shielding. This local differentiation optimizes electromagnetic interference reduction without compromising overall cable performance or assembly simplicity.
2Object-affected harmful factors
If the shield layer is removed from the cable bundle before passing through the ferrite bead, then electromagnetic interference is reduced, but the cable structure becomes more complex
Solution Approach 1:
The shield layer is removed in advance from the cable portions that will pass through the ferrite bead, during the cable preparation stage before final assembly. This preliminary action simplifies the overall assembly process by pre-configuring the cable with the correct shielding configuration, reducing the complexity of the final assembly operation.
3Volume of stationary object
If the cable bundle is folded in an organized manner within the handle, then space is optimized and electromagnetic interference is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The cable bundle is folded in smooth, organized curves rather than sharp angles or random configurations. This curved folding approach optimizes space utilization within the handle while maintaining consistent electrical characteristics and reducing electromagnetic interference through controlled geometry, without requiring excessive manufacturing precision.
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 solution effectively reduces electromagnetic interference and noise in the cable bundles, enhancing the performance and reliability of medical devices by improving emission and immunity performance.
Implementation Method 1
the remainder of the cable bundle passes through an electrical noise suppression member that is disposed within the handle... the electrical noise suppression member may optionally comprise a ferrite bead
Data Source
Figure 1A~1B
Figure 2
Figure 3Ai~3Aiii
AI summary
Medical devices that include a medical tool, a handle and a flexible cable bundle passing through the handle. The handles and cable routing therethrough are adapted to reduce noise within the cable.