Split-Type Tricuspid Valve System With 3D-Matched Anchoring
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Solution Overview
Problem
Existing transcatheter tricuspid valve designs face challenges in accurately anchoring due to the complex and diverse anatomical structures of the tricuspid valve, including a larger non-planar elliptical valve ring, softer tissue, thinner right ventricular wall, and complex perivalvular environment, making it difficult to provide supravalvular and perivalvular radial support.
Innovation Solution
A split-type transcatheter tricuspid valve system comprising a transcatheter tricuspid valve anchoring stent and a transcatheter artificial biological tricuspid valve, where the stent is first delivered and released to match the tricuspid valve's anatomical structure, then combined with the balloon-expandable valve to achieve precise anchoring through personalized design and deformation states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional integrated transcatheter tricuspid valve design is used, then the valve can be delivered through a catheter, but it cannot achieve accurate anchoring to the complex tricuspid valve anatomy
Solution Approach 1:
The valve system is divided into two independent instruments: a transcatheter tricuspid valve anchoring stent and a transcatheter artificial biological tricuspid valve. The stent is delivered first to establish anchoring, then the valve is delivered separately to integrate with the stent. This segmentation allows each component to be optimized for its specific function, with the stent providing accurate anchoring to the complex tricuspid valve anatomy while the valve provides the necessary valve function.
2Reliability
If the valve structure is designed to match the complex tricuspid valve anatomy, then accurate anchoring can be achieved, but the device becomes more difficult to manufacture and deliver
Solution Approach 1:
The anchoring stent is delivered and deployed first to establish the anchoring structure before the valve is delivered. This preliminary action allows the stent to be pre-positioned and pre-deployed to match the complex tricuspid valve anatomy, providing a stable foundation for the subsequent valve delivery and integration.
Solution Approach 2:
By separating the anchoring function into a distinct stent component, the valve structure itself can be simplified for easier manufacturing and delivery, while the stent handles the complex anchoring requirements. The stent can be designed with specific anchoring features that match the tricuspid valve anatomy without complicating the valve structure.
3Strength
If the valve is designed with supravalvular and perivalvular radial support, then it can provide structural support, but it cannot adapt to the diverse and complex anatomical forms of the tricuspid valve
Solution Approach 1:
The anchoring stent is designed with localized anchoring features that can adapt to different anatomical configurations of the tricuspid valve. The stent includes specific anchoring elements positioned to engage with the valve annulus and surrounding tissues, providing radial support where needed while maintaining adaptability to the diverse anatomical forms through customizable anchoring patterns.
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
Enables accurate anchoring of the transcatheter tricuspid valve system to the tricuspid valve site, ensuring minimal displacement and effective integration with subvalvular tissues, overcoming the anatomical challenges of the tricuspid valve.
Implementation Method 1
the latter is introduced into the tricuspid valve to assist and deform in the tricuspid valve site through the balloon expandable external force
Data Source
AI summary
The split type precisely-anchorable transcatheter tricuspid valve system comprises a split transcatheter tricuspid valve anchoring stent (10) and a transcatheter artificial biological tricuspid valve (20), wherein the shape and structure of the transcatheter tricuspid valve anchoring stent (10) are matched with the tricuspid valve real structure after the patient's image data is subjected to three-dimensional reconstruction, the transcatheter tricuspid valve anchoring stent (10) is firstly delivered to the tricuspid valve site of the patient to be released, deformed and personalized and precise alignment with a supravalvular (40) and subvalvular (50) tissue of the patient's tricuspid valve site; the transcatheter artificial biological tricuspid valve (20) is delivered into the transcatheter tricuspid valve anchoring stent (10) to be released, and the transcatheter artificial biological tricuspid valve (20) is released and deformed and expanded to a functional state, the transcatheter tricuspid valve anchoring stent (10) is deformed again to be combined with the expanded transcatheter tricuspid valve (20), and meanwhile, the re-deformation of the transcatheter tricuspid valve anchoring stent (10) is anchored by the combination of the anchoring stent and the subvalvular (50) tissue in advance. According to the split type accurately anchored transcatheter tricuspid valve system, based on a system designed by three-dimensional reconstruction, accurate anchoring of the personalized transcatheter tricuspid valve can be realized.