Lead Anchor With Adjustable Flexible Band For Varying Lead Diameters
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Solution Overview
Problem
Conventional lead anchors for implantable electrical stimulation systems often fail to securely anchor leads with varying diameters, leading to potential migration and instability post-implantation.
Innovation Solution
A side loading lead anchor design featuring a flexible band and support section with a fastener that adjusts to securely hold the lead, allowing lateral ingress and egress, and an exterior body with varying thickness for enhanced retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional lead anchor is used, then the structure is simple, but it fails to securely anchor leads with varying diameters leading to migration and instability
Solution Approach 1:
The lead anchor employs a dynamic compression mechanism where a first lead channel is compressed between a support section and a flexible band. The flexible band can be selectively moved to adjust the compression force, allowing the anchor to adapt to leads of varying diameters while maintaining secure anchoring. This dynamic adjustment capability resolves the contradiction by enabling reliable anchoring without requiring multiple fixed-size anchors.
Solution Approach 2:
The invention changes the compression parameter of the first lead channel through selective movement of the flexible band. By adjusting the compression force applied to the lead channel, the anchor can securely hold leads of different diameters. This parameter adjustment mechanism allows a single anchor structure to handle variable lead sizes, improving reliability without proportionally increasing complexity.
2Adaptability or versatility
If a fixed lead channel is used, then the structure is simple, but it cannot accommodate leads of varying diameters
Solution Approach 1:
The first lead channel is designed as a compressible structure rather than a fixed rigid channel. The flexible band can be selectively moved to compress the lead channel between the support section and the band, creating an adaptable fit for leads of varying diameters. This dynamic compression capability provides versatility without requiring multiple fixed channels for different lead sizes.
Solution Approach 2:
The lead anchor design allows a single anchor body to accommodate leads of various diameters through the adjustable compression mechanism. The first lead channel, when compressed by the flexible band, can securely hold different lead sizes within the same anchor structure, providing universal applicability without needing multiple specialized anchors for different lead types.
3Manufacturing precision
If the flexible band is positioned within the band channel, then the lead channel can be compressed to secure the lead, but the spaced-apart distance must be precisely controlled
Solution Approach 1:
The flexible band is designed to be selectively movable by the user or implanting surgeon without requiring complex external actuation mechanisms. The band can be manually positioned to compress the lead channel to the desired degree, and the structure itself provides the control mechanism through the interaction between the band, support section, and anchor body. This self-service approach achieves precise compression control without adding significant complexity.
Data Source
AI summary
A lead anchor includes an anchor body having a band section, guide members and a support section. The guide members and the support section are spaced apart from each other and define a band channel. Further, the lead anchor includes a flexible band that is coupleable to the guide members with at least a portion of the flexible band positionable within the band channel. The flexible band and the support section define a first lead channel having a spaced-apart distance between the flexible band and the support section. The first lead channel includes an open side for allowing a lateral ingress or egress of a portion of a lead. The lead anchor further includes a fastener movable relative to the anchor body to reduce or increase the spaced-apart distance of the first lead channel to hold or release, respectively, the portion of the lead within the first lead channel.