Expandable Prosthetic Valve with Connecting Thread for Anatomical Adaptation
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Solution Overview
Problem
Existing prosthetic valve implantation methods face challenges such as limited adaptability to patient growth, increased risk of pulmonary regurgitation, and complications from repeated surgeries due to the use of stents that cannot conform to anatomical changes, leading to potential valve migration and thrombosis.
Innovation Solution
A prosthetic valve with a tubular frame having a lattice structure that can be radially expanded and deformed, secured directly to the anatomical structure using a connecting thread, eliminating the need for a horizontal sewing ring and allowing for multiple expansions to accommodate patient growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stented valve is used to secure the prosthetic valve, then the valve can be fixed in position, but the stent cannot adapt to patient growth and may migrate or cause thrombosis
Solution Approach 1:
The patent applies the dynamics principle by making the stent expandable and adjustable after implantation. The stent can be expanded to different sizes to accommodate patient growth, transforming a static fixation structure into a dynamic one that adapts to changing anatomical conditions while maintaining reliable valve positioning
Solution Approach 2:
The patent changes the size parameter of the stent by providing an expandable structure that can be adjusted from a compressed delivery state to an expanded implanted state. This parameter change allows the same stent to fit different patient sizes and accommodate growth, resolving the contradiction between initial fixation stability and long-term adaptability
2Ease of manufacture
If a horizontal sewing ring is used to implant the prosthetic valve, then the valve can be secured to the valve annulus, but repeated surgeries are required as the valve cannot adapt to anatomical changes
Solution Approach 1:
The patent applies dynamics by providing an expandable stent that can be adjusted in size after the initial implantation. This eliminates the need for repeated surgeries to replace valves as patients grow, since the same valve can be expanded to accommodate anatomical changes, thus reducing time loss from multiple surgical procedures
Solution Approach 2:
The patent applies preliminary action by implanting an expandable stent that is designed to accommodate future growth. The stent is initially implanted in a compressed state and can be expanded later without requiring removal or replacement, thus preventing the need for repeated surgical interventions
3Ease of operation
If conventional stents are used in previously surgically treated positions, then the valve can be implanted, but the valve is prone to migration due to altered vessel elasticity and shape
Solution Approach 1:
The patent applies dynamics by providing an expandable stent that can be adjusted to match the altered anatomy of previously surgically treated positions. The stent can be expanded to provide optimal radial support and anchoring in the specific anatomical conditions, improving position stability while maintaining implantation feasibility
Solution Approach 2:
The patent changes the expansion parameter of the stent to adapt to the altered vessel elasticity and shape in previously surgically treated positions. By adjusting the expansion degree, the stent can achieve stable anchoring in these challenging anatomical conditions, preventing migration while remaining implantable
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
The solution provides stable implantation, reduces the risk of complications, and avoids the need for repeated surgeries by allowing the prosthetic valve to adapt to anatomical changes, ensuring long-term functionality and reducing manufacturing costs.
Implementation Method 1
a tubular frame with a lattice structure that can be radially expanded and deformed
Implementation Method 2
secured directly to the anatomical structure using a connecting thread
Data Source
AI summary
A prosthetic valve, solving the technical problem of an existing prosthetic valve, when implanted in a certain valve site, not being adaptive to the physiological anatomy condition of the heart, being difficult to mount and fix properly and being easy to become displaced, and consequently affecting the function of the valve. The prosthetic valve comprises an annular frame (2) which has a mesh structure and can radially expand to deform; a connection line (10) is provided on the frame (2); the prosthetic valve is connected and fixed to an anatomical structure of a mounting position of a human body by means of the connection line (10); the connection line (10) surrounds the outside of the frame (2) to form several connection portions which extend out along the radial direction of the frame (2); the space surrounded by the connection portions can receive the thickness of the anatomical structure. The prosthetic valve is connected and fixed by means of the connection line (10) to an anatomical structure of a mounting position in a human body, e.g. a vessel wall, being mounted stably and being applicable to a patient on whom a valve replacement surgery is difficult to perform, e.g. a pulmonary artery stenosis patient.