Transcatheter Heart Valve Alignment for Native Hemodynamics
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Solution Overview
Problem
Existing transcatheter heart valve prostheses do not adequately mimic the endogenous heart valve, leading to significant interference with the patient's heart function and potential long-term side effects such as increased stroke risk and the need for pacemaker implantation.
Innovation Solution
A heart valve replacement prosthesis with specific structural features, including commissure and annulus alignment means, that mimic the natural hemodynamics and geometry of the native valve, reducing interference and side effects by aligning the prosthetic commissures and leaflets with their endogenous counterparts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing transcatheter heart valve prostheses are used, then the valve replacement procedure can be performed, but the prosthesis does not adequately mimic the endogenous heart valve, leading to significant interference with heart function and potential long-term side effects
Solution Approach 1:
The patent applies the copying principle by creating a prosthesis that replicates the anatomical structure and hemodynamic function of the native heart valve. The prosthesis includes commissure alignment features and a valve body designed to mimic the natural valve's geometry, allowing it to copy the endogenous valve's flow patterns and mechanical behavior, thereby reducing interference with normal heart function while maintaining reliable valve replacement capability
2Object-affected harmful factors
If the prosthesis is designed to mimic natural hemodynamics and geometry, then side effects are reduced, but the device complexity increases due to specific structural features like commissure and annulus alignment means
Solution Approach 1:
The patent applies asymmetry by incorporating non-uniform structural features in the prosthesis design. The valve body includes asymmetric commissure alignment means and annulus alignment features that are strategically positioned to replicate the natural valve's asymmetric geometry. This asymmetric design enables better mimicry of endogenous heart valve hemodynamics while reducing side effects, accepting the necessary increase in device complexity as a trade-off for improved clinical outcomes
3Duration of action of stationary object
If the prosthesis uses alignment means to prevent displacement, then long-term durability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies preliminary action by incorporating pre-formed alignment means during the manufacturing process. The commissure alignment features and annulus alignment means are pre-positioned and pre-shaped to ensure proper orientation upon implantation. This preliminary configuration during manufacturing ensures that the alignment features are precisely positioned before implantation, reducing the need for complex intraoperative adjustments while maintaining high manufacturing precision standards for long-term durability
Data Source
AI summary
This disclosure relates to a heart valve with improved functionality and durability.