Cardiac Conduction Catheter With Mapping Probe for Deep Lead Placement
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Solution Overview
Problem
Existing cardiac pacing technologies, such as right ventricular and biventricular pacing, often result in adverse outcomes like mitral and tricuspid regurgitations, atrial fibrillation, and pacing-induced cardiomyopathy due to unphysiological lead placement, while conventional methods for cardiac conduction system pacing face challenges in deep seating and minimizing trauma to heart tissue.
Innovation Solution
The development of catheters and leads designed for deep seating within the cardiac conduction system, particularly the ventricular septum, with features like helix electrodes, tapered tips, and adjustable spacers, allowing precise placement and minimal tissue trauma, along with a probe for electrical mapping and pacing/sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pacing leads are placed in right ventricular apex, then pacing function is achieved, but mitral regurgitation and tricuspid regurgitation occur
Solution Approach 1:
The catheter system performs preliminary electrical mapping and sensing to identify the optimal His bundle location before lead implantation. The probe with exposed distal electrode conducts pacing and sensing to obtain electrocardiogram, allowing adjustment of probe location based on electrical characteristics before the final lead is placed
Solution Approach 2:
The catheter acts as an intermediary delivery system that guides the lead to the precise His bundle location. The catheter with extending orifice provides a controlled pathway for lead insertion, ensuring accurate positioning while minimizing tissue trauma
2Measurement precision
If leads are placed deeper in cardiac conduction system, then precise pacing is achieved, but tissue trauma increases
Solution Approach 1:
The system is divided into separate functional components: a delivery catheter for navigation, a probe for electrical mapping and preliminary pacing, and a final lead for permanent implantation. This segmentation allows each component to be optimized for its specific function, minimizing overall tissue trauma while achieving precise placement
Solution Approach 2:
The probe includes an exposed distal end of the wire with electrode configured to conduct pacing prior to implanting the lead. This temporary exposure and pacing capability allows for precise location verification through electrical parameters before final lead implantation
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
These designs enable stable electrical performance and minimize trauma to the heart tissue, facilitating precise placement of leads in the cardiac conduction system, thereby mitigating chronic clinical issues associated with conventional pacing methods.
Implementation Method 1
The distal end of the wire includes an electrode configured to conduct pacing prior to implanting the lead
Implementation Method 2
a distal end including a helix electrode... The second diameter is equal to, smaller than, or greater than the first diameter
Implementation Method 3
a linear electrode having a tapered tip
Data Source
AI summary
A catheter system for implanting a lead for cardiac conduction system is provided. The catheter system includes a catheter having an orifice extending from a distal end of the catheter to a proximal end of the catheter for implanting the lead, and a probe extending through the catheter. The probe includes a conductive wire covered with an insulation layer. A distal end of the wire is exposed from the insulation layer. The distal end of the wire includes a wire electrode configured to conduct pacing prior to implanting the lead.