Mitral Leaflet Tethering Via Interventricular Septal Catheter Access
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Solution Overview
Problem
Current techniques for correcting mitral valve regurgitation are highly invasive and require open heart surgery, posing significant risks to patients.
Innovation Solution
A method involving a catheter-based approach to access the right ventricle through the venous system, traverse the intraventricular septum, and deploy a chordae replacement implant to secure the mitral valve leaflet, utilizing steerable catheters and magnetic guidance for precise positioning and suturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If open heart surgery is used to correct mitral valve regurgitation, then the valve can be repaired effectively, but the procedure becomes highly invasive with significant patient risks
Solution Approach 1:
The patent replaces the mechanical open-heart surgical system with a catheter-based delivery system that uses magnetic fields for guidance and control. The replaceable tip catheter allows deployment of repair devices through vascular access without requiring thoracic surgery, thus substituting invasive mechanical surgery with less invasive magnetically-guided catheter technology.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary to guide and control the catheter and deployment tools. Magnets embedded in the catheter tip and interactors allow remote manipulation of the repair devices within the heart, serving as a mediator between the operator and the delicate valve structures without direct surgical contact.
2Object-affected harmful factors
If a catheter-based approach is used to access the left ventricle, then patient risk is reduced, but the complexity of navigating through the venous system and intraventricular septum increases
Solution Approach 1:
The catheter is designed with a replaceable tip that can be dynamically adjusted and reconfigured during the procedure. The magnetic guidance system allows real-time dynamic control of catheter position and orientation, enabling navigation through complex anatomical pathways with greater flexibility and adaptability.
Solution Approach 2:
The catheter system is segmented into modular components including the introducer catheter, replaceable tip catheter, and various deployment tools. This segmentation allows each component to be optimized for specific navigation challenges and enables exchange of tools without removing the entire catheter system, simplifying the overall navigation process.
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
Facilitates a less invasive procedure for mitral valve repair, enabling precise reattachment of mitral valve leaflets without the need for open heart surgery, thereby reducing patient risk and improving procedural efficacy.
Implementation Method 1
utilizing steerable catheters and magnetic guidance for precise positioning and suturing
Data Source
AI summary
Apparatuses and techniques to access the right ventricle via transfemoral vein threading a catheter or catheters to the apex or bottom of the right ventricle. Piercing through the venous or right side of the heart in the interventricular septal wall to access the left ventricle a catheter can be passed to turn upward pointing to the mitral valve. From this access point in the left ventricle the flail mitral leaflet can be sutured and tethered pulling it back into position and reattached with a grounding anchor in the right ventricle or imbedding the anchor into the septal wall. The interventricular septal wall crossing technique could include the passing of a coaxial catheter through the first access catheter where the first access catheter could act as a guide to direct the internal or second coaxial catheter toward the flail mitral leaflet.