Heart Valve Prosthesis Suture Ring with Movable Tabs
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Solution Overview
Problem
Existing heart valve prostheses with arc-shaped sewing rings face difficulties in suturing due to anatomical variations, particularly with asymmetrically shaped aortic valves, leading to potential vessel deformation or improper fitting.
Innovation Solution
A heart valve prosthesis with a sewing ring composed of three arcs and movable tabs that can be directed or folded to accommodate different anatomies, allowing for flexible seam placement and adaptation to various anatomical shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a closed ring suture structure is used, then the structural integrity is improved, but the adaptability to different anatomies deteriorates
Solution Approach 1:
The closed ring suture structure is segmented by introducing notches that allow the ring to be divided into movable sections. These notches enable the suture ring to adapt to different anatomical configurations while maintaining overall structural integrity through the segmented design.
Solution Approach 2:
The suture ring transitions from a static closed ring to a dynamic structure with movable sections created by notches. These notches allow the ring to flex and adjust its shape dynamically during suturing to accommodate various anatomical conditions while preserving structural stability.
2Adaptability or versatility
If a scalloped suture ring is used, then the adaptability to different anatomies is improved, but the suturing difficulty increases
Solution Approach 1:
The scalloped suture ring is segmented into discrete notches that can be independently positioned. This segmentation allows the surgeon to select and engage only the necessary notches for a given anatomical configuration, simplifying the suturing process while maintaining adaptability.
Solution Approach 2:
Different sections of the suture ring have different properties through the notched design. The notches provide localized flexibility points while the intervening sections maintain structural rigidity, allowing easy suturing at specific locations while preserving overall ring integrity.
3Adaptability or versatility
If a scalloped suture ring is used, then the adaptability to different anatomies is improved, but the vessel deformation increases
Solution Approach 1:
The notched suture ring segments the force distribution during suturing. By concentrating flexibility at discrete notch points rather than along the entire scalloped perimeter, the ring can adapt to anatomy while distributing mechanical stresses to minimize vessel deformation.
Solution Approach 2:
The notched design creates localized flexibility zones that allow anatomical adaptation without requiring the entire ring to deform. This localized quality approach enables the suture ring to conform to asymmetric anatomies while maintaining structural support to prevent excessive vessel deformation.
Data Source
Figure 1~3
AI summary
The invention relates to a heart valve prosthesis, having a downstream first axial end (6) and an upstream second axial end (8) and a stitching ring (10) extending in an arcuate manner for stitching in a blood vessel, the arcuate course of which stitching ring is formed by three arcs (12) and three transition regions (14), at each of which the ends of two of the arcs (12) transition into each other, wherein the stitching ring (10) has a movable tab (18) at at least one of said three transition regions (14), which tab can be selectively directed toward the first axial end (6) or folded over toward the second axial end (8).