Wireless Septal Wall Stimulator for Left Ventricular Resynchronization
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Solution Overview
Problem
Existing cardiac pacing systems struggle to effectively stimulate the left ventricular septal wall, particularly in cases of bundle branch block, due to challenges in delivering energy efficiently and securely to the targeted conduction structures like the bundle of His and left bundle branch.
Innovation Solution
The system employs wireless receiver-stimulators with anchors that are secured to the septal wall, converting acoustic energy to electrical energy for precise stimulation, using bipolar, tripolar, or quadripolar electrode arrays, and is delivered via intravascular or arterial approaches, allowing for programmable parameters and simultaneous or staggered pacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transvenous lead systems are used for cardiac resynchronization therapy, then electrical stimulation can be delivered to the left ventricle, but the system requires venous access and lead implantation which increases procedural complexity and risk
Solution Approach 1:
The patent replaces the mechanical transvenous lead system with a percutaneous catheter-based system that delivers electrical stimulation through a different anatomical route (arterial access rather than venous access), thereby substituting one mechanical implantation approach with another that avoids the complexities of venous lead placement
2Reliability
If epicardial lead systems are used for cardiac resynchronization therapy, then electrical stimulation can be delivered to the left ventricle, but the system requires surgical intervention which increases procedural invasiveness
Solution Approach 1:
The patent substitutes the surgical epicardial lead approach with a percutaneous catheter-based system that accesses the left ventricle through arterial puncture and navigation, replacing open surgical intervention with a minimally invasive catheterization procedure
3Reliability
If electrical stimulation is applied to the left ventricular septal wall, then cardiac resynchronization therapy can be achieved, but the risk of cardiac perforation and tamponade increases
Solution Approach 1:
The patent introduces a radiopaque marker as an intermediary element that provides visual guidance during catheter placement, allowing the operator to identify the optimal stimulation site and avoid areas at risk for perforation, thereby mediating between the need for effective stimulation and the need to avoid harmful effects
Solution Approach 2:
The patent employs preliminary mapping and identification of the left ventricular septal wall characteristics before delivering stimulation, allowing pre-planning of the optimal electrode placement site that maximizes therapeutic effect while minimizing risk of cardiac perforation
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
This approach enables efficient and targeted stimulation of the septal wall, restoring ventricular synchrony and improving cardiac pump function by directly stimulating the conduction system, even in diseased states.
Implementation Method 1
delivering electrical stimulation to a left ventricular septal wall of the heart
Data Source
Figure 1
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Figure 3A~3B
AI summary
The present technology is generally directed to medical implants, such as stimulation assemblies for stimulating the septal wall of the heart of a human patent, and associated methods. In some embodiments, a stimulation assembly includes a body, circuitry positioned at least partially within the body, an electrode, and an anchor coupled to the body. The anchor can be secured to the septal wall such that the body is positioned within the left ventricle of the heart and the electrode engages tissue of the septal wall. The circuitry can be configured to receive acoustic energy and to convert the acoustic energy to electrical energy, and the electrode can deliver the electrical energy to the tissue of the septal wall to stimulate the tissue.