Implantable Neurostimulation Lead with Support Comb
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Solution Overview
Problem
Current deep brain stimulation (DBS) devices face challenges in securely attaching and routing microelectrode films with electrodes, leading to mechanical detachment issues during assembly and limited degrees of freedom, which affects the reliability and efficiency of neurostimulation therapy.
Innovation Solution
A cylindrical stimulation device with a silicon etched support comb and internal support tube is developed, featuring a routing face with slots for wire alignment and attachment channels for adhesive, allowing for secure interconnection of wires with microelectrode films and reducing mechanical detachment, while enabling a three-dimensional configuration for increased assembly flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If microelectrode films are attached to support structures, then mechanical stability is improved, but mechanical detachment issues occur during assembly
Solution Approach 1:
The support structure is divided into a support comb with multiple fingers and a separate microelectrode film, allowing independent positioning and attachment. The comb fingers provide discrete attachment points that distribute mechanical stress, preventing detachment during assembly while maintaining stability during operation.
Solution Approach 2:
An adhesive layer is introduced as an intermediary between the microelectrode film and the support comb. This adhesive mediator creates a reliable bond that prevents mechanical detachment during assembly while maintaining the mechanical stability of the final assembly.
2Manufacturing precision
If wires are routed through structured channels, then wire alignment is improved, but device complexity increases
Solution Approach 1:
The support comb serves multiple functions: it provides mechanical support for the microelectrode film, routes and aligns wires through its finger structure, and maintains the three-dimensional configuration. This multi-functionality reduces the need for separate routing components, thereby reducing overall device complexity while maintaining alignment precision.
Solution Approach 2:
The wire routing utilizes the three-dimensional space created by the comb fingers, allowing wires to be routed along the length of the fingers rather than requiring complex planar routing. This vertical dimension provides natural alignment pathways that simplify the routing structure while maintaining precision.
3Adaptability or versatility
If microelectrode film is configured in three-dimensional arrangement, then assembly flexibility is improved, but manufacturing difficulty increases
Solution Approach 1:
The microelectrode film is pre-configured with extension legs that are designed to fit onto the comb fingers in a specific three-dimensional arrangement. This preliminary configuration allows the film to be assembled in the desired 3D shape without requiring complex manipulation during final assembly, thereby maintaining assembly flexibility while simplifying manufacturing.
Data Source
AI summary
The present disclosure describes an implantable lead device that includes an internal support comb. The support comb can include one or more faces that enable the alignment, routing, and holding of the lead device's internal wires. The support comb can enable the interconnection of the wires with to the microelectrode film that includes the lead device's electrodes.