Mitral Valve Clamping Device with Self-Aligning Protrusions
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Solution Overview
Problem
Current valve clamping devices for treating mitral regurgitation are complex, costly, and pose challenges in capturing the valve, clamping force, and production processability, leading to prolonged surgeries and potential valve damage.
Innovation Solution
A valve clamping device with a first clamping component and a second clamping component, featuring outward and inward protrusions, clamping teeth, and a lantern ring structure, designed for minimally invasive surgery, utilizing elastic materials to enhance clamping stability and reduce damage, with a conveying system for precise adjustment and deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a complex control system is used to achieve precise valve clamping, then the clamping precision is improved, but the device complexity and cost increase
Solution Approach 1:
The clamping arms are designed with self-aligning protrusions and corresponding recesses that automatically guide the clamping arms into the correct position on the valve leaflets during deployment, eliminating the need for complex active control systems while maintaining high clamping precision
Solution Approach 2:
The distal ends of the clamping arms are designed with spherical protrusions that fit into corresponding recesses, providing automatic alignment and positioning through geometric constraints rather than complex control mechanisms
2Object-affected harmful factors
If the delivery system is made long and curved to reach the left ventricle through veins, then the minimally invasive approach is achieved, but the operation complexity and surgery time increase
Solution Approach 1:
The delivery system is divided into modular segments including a catheter, guide wire, and deployable clamping mechanism, allowing each component to be optimized independently and simplifying the overall operation while maintaining the minimally invasive approach
Solution Approach 2:
The clamping arms are pre-loaded in a compressed state within the catheter and automatically deploy upon reaching the target position, eliminating the need for complex real-time adjustments during surgery
3Reliability
If traditional clamping devices are used without protrusions, then the structure is simpler, but the clamping stability and force are insufficient
Solution Approach 1:
Protrusions are added at specific asymmetric positions on the clamping arms to create mechanical interlocking with corresponding recesses on the valve leaflets, significantly enhancing clamping stability without requiring complex overall restructuring
Solution Approach 2:
The protrusions and recesses are pre-configured to engage automatically upon deployment, providing immediate mechanical interlocking and stable clamping force without requiring additional adjustment mechanisms
4Force
If the clamping arms are made rigid to improve clamping force, then the clamping performance is improved, but the damage to the valve during movement increases
Solution Approach 1:
The clamping arms are designed with dynamic characteristics that allow them to be flexible during navigation and deployment, then become rigid when engaged with the valve leaflets through the protrusion-recess mechanism, providing strong clamping force without causing damage during movement
Solution Approach 2:
The protrusions at the distal ends of the clamping arms are designed with rounded surfaces and appropriate dimensions to distribute contact forces evenly on the valve leaflets, preventing stress concentration and tissue damage while maintaining effective clamping
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 device achieves stable and efficient clamping of the mitral valve, reducing surgery time and risk, improving production feasibility, and minimizing valve damage through precise design and material selection, facilitating smoother movement and stronger clamping performance.
Implementation Method 1
When the external binding force is applied, the clamping arms are elastically deformed to generate elastic stress
Data Source
AI summary
The present invention discloses a novel valve clamping device and a valve clamping system. The valve clamping device includes a first clamping component, a second clamping component, and a fixing component for fixing the first clamping component and the second clamping component. The first clamping component has at least two first clamping arms. The second clamping component has a corresponding number of second clamping arms. Each of the first clamping arms and the corresponding second clamping arm may be combined into a pair of clamps. The clamping device may adopt designs of a smooth transition at the top, the clamping teeth having high clamping stability, and the fixed ring achieving the purpose of “one thread for two uses”.