Non-Invasive Lead Extraction Tool with Dual-Action Rotational and Axial Movement
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Solution Overview
Problem
Current lead extraction procedures are inadequate due to the high technical complexity and risk of vascular tears, with existing instruments often requiring cutting mechanisms that pose complications, leading to a reluctance among medical providers to perform extractions, resulting in only 30-40% of leads being successfully removed.
Innovation Solution
A lead extraction assistance device that applies vibration, hammering, and twisting motions externally to the lead, using a rotational motor and hammering device coupled to a lead locking device, to break vascular adhesions without the need for invasive cutting tools, thereby facilitating non-invasive extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a cutting-based instrument is inserted via the lead lumen to extract the lead, then the lead can be extracted from vascular adhesions, but the risk of vascular tear increases due to slicing the lead with vessel adhesions affixed to a vessel wall
Solution Approach 1:
The patent replaces the cutting-based mechanical system with a vibration-based system. The lead extraction device incorporates a vibration source that generates high-frequency oscillations to disrupt and break vascular adhesions without requiring cutting tools inside the body. This substitution eliminates the harmful slicing action that causes vascular tears while maintaining the ability to extract the lead.
Solution Approach 2:
The patent employs mechanical vibration as the core mechanism for lead extraction. The vibration source generates controlled oscillations that are transmitted through the lead, causing the vascular adhesions to loosen and detach. This vibrational approach allows for the breakdown of adhesions without the need for invasive cutting, thereby reducing vascular tear risk while enabling successful lead extraction.
2Productivity
If a cutting-based extraction instrument is used, then lead extraction can be performed, but the procedure becomes highly technique-based and complex, limiting the number of providers who can perform it
Solution Approach 1:
The patent simplifies the extraction procedure by replacing complex cutting mechanisms with a vibration-based system. The vibration source operates on a straightforward principle of oscillatory disruption, making the procedure less technique-dependent and more accessible to a broader range of medical providers. This reduction in procedural complexity increases the number of qualified practitioners who can safely perform lead extraction.
3Productivity
If cutting mechanisms are used inside the body for lead extraction, then leads can be removed, but complications arise from slicing the lead with vessel adhesions, leading to reluctance among medical providers
Solution Approach 1:
The patent eliminates cutting mechanisms entirely by substituting them with a vibration-based extraction system. The vibration source generates oscillations that disrupt vascular adhesions from the outside, avoiding the need to insert cutting tools inside the body. This substitution removes the source of complications associated with internal cutting while maintaining effective lead extraction capability.
Solution Approach 2:
The patent introduces an intermediary vibration transmission mechanism that acts as a mediator between the external vibration source and the lead. The vibration source applies oscillatory forces through the lead, and these forces are transmitted to the vascular adhesions, causing them to detach. This intermediary vibration transmission approach enables lead extraction without direct internal cutting, thereby eliminating the associated complications.
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 device reduces the risk of complications by enabling the removal of leads with minimal invasion, increasing the willingness and ability of medical providers to perform extractions, potentially improving adherence and safety in lead extraction procedures.
Implementation Method 1
a vibration source configured to apply continuous vibration to the lead
Implementation Method 2
a hammering device configured to impact the lead to assist to draw out the lead and counter any resistance caused by affixed vascular adhesions
Implementation Method 3
a rotational motor configured to twist the lead to assist in the attempt to draw out the lead and counter any resistance caused by the affixed vascular adhesions
Data Source
AI summary
Systems and apparatuses for lead extraction using a lead locking device are provided. The apparatus includes a lead extraction assistance device for use with a lead locking device (LLD) in a lead extraction procedure, the apparatus includes a lead locking device (LLD); a lead locking assist device coupled to the LLD wherein the lead locking assist device includes an assembly configured with a center shaft that has an inlet that for entry of the lead (10) and configured with an outlet for exiting the LLD wherein the assembly clamps both an entered lead and an exited LLD; and a module disposed in the assembly and coupled to both the entered lead and the exited LLD, the module configured to apply, a first action by a rotational motor (60) to twist the entering lead and a second action by a hammering device (87) for hammering the entered lead to assist in pulling out the lead.