Percutaneous Valve Fine Adjustment Mechanism
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Solution Overview
Problem
Current percutaneous prosthetic valve devices lack precision in positioning, leading to potential occlusion of coronary arteries or interference with heart conduction tissues, necessitating a method for fine adjustments post-implantation to ensure accurate valve placement without damaging surrounding tissues.
Innovation Solution
An adjustment mechanism allowing for incremental axial and angular adjustments of the valve member relative to the device frame, utilizing complementary configuration pairs such as quick-release mechanisms, snap-fit, ratchet, or helix rail systems, enabling precise positioning post-implantation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If percutaneous prosthetic valve devices are implanted using current methods, then implantation can be performed minimally invasively, but positioning precision is insufficient leading to potential occlusion of coronary arteries or interference with heart conduction tissues
Solution Approach 1:
The valve device incorporates a dynamic adjustment mechanism that allows the valve member to be repositioned relative to the device frame after implantation. The complementary configuration pair enables controlled movement and locking at different positions, transforming a static implantable device into a dynamically adjustable one to achieve precise positioning while minimizing tissue damage risk
Solution Approach 2:
The device is divided into separable components including a device frame and a valve member that can move relative to each other. The complementary configuration pair acts as an interface between these segments, allowing independent adjustment of the valve member position while maintaining the overall structural integrity of the implanted device
2Measurement precision
If the valve member is fixed to the device frame, then structural simplicity is maintained, but positioning accuracy cannot be adjusted post-implantation
Solution Approach 1:
The complementary configuration pair provides a controlled dynamic interface between the valve member and device frame. It allows the valve member to move to different positions and lock securely at each position, providing adjustability without requiring complex active control systems or multiple separate components
Solution Approach 2:
The complementary configuration pair serves as an intermediary mechanism between the valve member and device frame. It mediates the relationship between these two components by providing a standardized interface that enables controlled movement and secure locking, simplifying the overall adjustment mechanism while achieving positioning accuracy
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
The invention provides a device for fine adjustment of a prosthetic valve device and a method of adjusting the position of a prosthetic valve after implantation. The adjustment mechanism includes complementary structures on a valve member and device frame that cooperate to provide relative axial and/or angular motion between the valve member and device frame (and thus the native vessel). The adjustment mechanism of the invention may also include a means for selectively maintaining the relative position of the valve member and device frame. The device and method are particularly applicable for use with a modular prosthetic valve device that is assembled in the body lumen.