Implantable Anchor With Pivoting Cover For Lead Retention
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Solution Overview
Problem
Medical electrical leads and drug delivery catheters often migrate after implantation, leading to ineffective therapy delivery and potential complications.
Innovation Solution
An implantable anchor system with a hinged cover mechanism that allows zero or near-zero insertion force while providing sufficient retention force, featuring a channel for the lead or catheter, a pivoting cover for secure engagement, and suturing to biological tissue to prevent migration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a traditional anchor system is used to retain the lead or catheter, then retention force is provided, but insertion force is high and device migration occurs
Solution Approach 1:
The cover is designed to pivot between an open position for insertion and a closed position for retention. During insertion, the cover pivots to allow easy passage of the lead or catheter with zero or near-zero insertion force. After insertion, the cover pivots to the closed position to provide secure retention force, preventing device migration. This dynamic transformation resolves the contradiction between easy insertion and secure retention.
2Reliability
If the anchor system is designed for secure retention, then device migration is prevented, but the structure becomes complex
Solution Approach 1:
The anchor system is segmented into distinct functional components: a body portion with a channel for receiving the lead or catheter, and a separate cover portion that pivots to provide retention. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity. The modular design reduces complexity compared to monolithic anchor structures.
Solution Approach 2:
The cover serves multiple functions: it acts as a closure to provide retention force, a pivot mechanism for easy insertion, and a structural element that integrates with the body portion. By combining these functions into a single component, the overall device complexity is reduced while maintaining reliable device retention.
3Ease of operation
If the anchor allows easy insertion with zero force, then ease of operation is improved, but retention security may be compromised
Solution Approach 1:
The pivotable cover transitions from an open state during insertion to a closed state for retention. During insertion, the cover is open allowing zero or near-zero insertion force. After insertion, the cover pivots to the closed position where it engages with the body portion to provide secure retention. This dynamic state change ensures both ease of operation and retention security without compromise.
Data Source
AI summary
An implantable anchor for anchoring a lead or catheter relative to biological tissue, implantable system including such an anchor and a lead or catheter, and a method of use of such anchor. The anchor comprises a body having a channel adapted to receive a catheter or lead, and a cover mounted on the body for pivoting motion along a lateral axis, that is an axis that extends generally in the lateral direction perpendicular to the catheter or lead, between an open position in which the anchor is adapted to allow a lead or catheter to be placed in or moved along the channel, and a locked position in which the anchor is adapted to retain a lead or catheter within the channel.