Flexible Substrate Conductor Routing for Medical Lead Assembly
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Solution Overview
Problem
Conductor management in medical devices often requires additional components, hazardous materials, and energy-intensive processes, increasing cost and manufacturing time, and is not effective for all insulation types and thicknesses.
Innovation Solution
A method involving a flexible substrate with integral routing features that allows conductors to be secured and routed without additional components or hazardous materials, using a cutting device to create holes for conductor passage, maintaining positioning and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If wire channels are used for conductor management, then conductors can be properly routed and positioned, but additional componentry must be supplied and inserted, increasing cost and manufacturing time
Solution Approach 1:
The patent combines the conductor routing function directly into the flexible substrate by forming channels within the substrate material itself, rather than using separate wire channel components. This merging eliminates the need for additional componentry while maintaining proper conductor routing and positioning capabilities.
Solution Approach 2:
The flexible substrate serves multiple functions: it provides mechanical support, contains integrated routing channels for conductor management, and acts as the base structure for the medical device. This multi-functionality eliminates the need for separate dedicated routing components.
2Reliability
If adhesives are used for conductor management, then conductors can be secured to components, but additional materials including hazardous carrier fluids are introduced and additional energy or processing is required to cure them
Solution Approach 1:
The patent extracts the conductor securing function from chemical adhesives and implements it through mechanical means - specifically, the flexible substrate's integrated channels physically constrain and secure conductors through friction and geometric fit, eliminating the need for hazardous adhesive materials and their curing processes.
3Strength
If clips are used for conductor management, then conductors can be mechanically fastened, but clips have limited application due to size limitations and require additional componentry that increases cost and manufacturing time
Solution Approach 1:
The patent merges the mechanical fastening function into the flexible substrate's integrated channels, which provide friction-based and geometry-based securing mechanisms. This eliminates the need for separate clip components while maintaining effective conductor fastening for various sizes.
Solution Approach 2:
The flexible substrate channels are designed with specific local geometries that provide appropriate friction and mechanical engagement for conductor securing. The channel dimensions, wall angles, and surface characteristics are optimized locally to provide strong fastening without requiring additional components.
Data Source
AI summary
In various examples, conductor management within a medical device includes providing a flexible substrate. The flexible substrate includes at least one routing feature. A hole is cut in the at least one routing feature with a cutting device. A conductor is passed through the hole in the at least one routing feature. The routing feature acts to maintain and manage positioning of the conductor within the medical device. The medical device, in some examples, includes a lead, with the conductor connected to an electrode of the lead after being routed through the routing feature.