Z-shaped braided stent axial compression
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Solution Overview
Problem
Existing braided stents are difficult to adapt to various human organ requirements due to their deformation properties, which can lead to discomfort or injury during medical procedures.
Innovation Solution
A Z-shaped braided stent with a unique structure comprising two interconnected tubular wire meshes with specific bending points and a traction device, allowing for axial deformability and compressibility without radial change, ensuring minimal force exertion on human organs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the stent is made deformable to be inserted into the delivery device and adapt to human organ structures, then the stent can be implanted into various organs, but the stent generates deformation forces that cause discomfort or injury to the organs
Solution Approach 1:
The stent is divided into multiple braided rings with discrete bending points, allowing localized deformation at specific segments while maintaining overall structural integrity. This segmentation enables the stent to adapt to curved organ geometries without generating excessive deformation forces throughout the entire structure.
Solution Approach 2:
The stent employs a dynamic braided structure with Z-shaped wires that can flex and deform in response to organ geometry while maintaining radial support. The continuous braiding pattern with bending points allows controlled deformation during insertion and adaptation, then stabilizes to minimize harmful forces during the implantation process.
2Stability of the object's composition
If the stent is designed with a pre-set basic form in a released state, then the stent maintains structural integrity, but the stent cannot adapt to diverse human organ geometries without generating deformation forces
Solution Approach 1:
The stent features localized bending points at specific intervals along the Z-shaped braided wires, creating regions of controlled flexibility. These bending points allow the stent to locally adapt to curved organ surfaces while the segments between bending points maintain structural stability and radial support.
Solution Approach 2:
The Z-shaped braided structure introduces asymmetric geometry that enables the stent to deform in specific directions while maintaining radial integrity. The asymmetric Z-pattern allows the stent to conform to curved organ geometries without compromising the overall structural stability or generating excessive deformation forces.
3Ease of manufacture
If the stent uses traditional braiding structures, then the manufacturing process is simple, but the stent cannot be adapted to specific organ requirements without causing harm
Solution Approach 1:
The stent employs parameter changes in the braiding pattern, specifically using Z-shaped wire configurations with controlled bending angles and spacing. By adjusting these geometric parameters during manufacturing, the stent achieves both ease of production and the ability to adapt safely to various organ geometries without causing injury.
Data Source
AI summary
A Z-shaped braided stent capable of being implanted into a human organ. The Z-shaped braided stent comprises: a first tubular wire mesh having N braided rings and formed by continuously braiding first braid wires (I) in a Z shape, each braided ring of the first tubular wire mesh having a plurality of first bending points (A) formed by bending the first braid wires (I) and distributed at intervals; and a second tubular wire mesh having N braided rings and formed by continuously braiding second braid wires (II) in a Z shape, each braided ring of the second tubular wire mesh having a plurality of second bending points (B) formed by bending the second braid wires (II) and distributed at intervals. By hooking the first bending points (A) with the second bending points (B), the second tubular wire mesh and the first tubular wire mesh are connected together to form the Z-shaped braided stent. The braided stent can be subjected to axially deformable compression, but axially basically non-deformable stretching.