Stent Junction Pipe Locking Part Design
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Solution Overview
Problem
Existing stents used for medical treatment of tubal tissues face issues with the stabilizer hook, strut, and pulling-back member separating from the connection parts when a tensile force is applied, leading to instability during deployment and indwelling in affected areas.
Innovation Solution
A stent design featuring a junction pipe with a locking part that secures the stent main wire, strut, and stabilizer hook, preventing separation by locking the wire parts into the junction pipe, ensuring reliable connection and stability under tensile forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stent main wire, strut, and stabilizer hook are connected through a junction pipe using conventional caulking methods, then the stent can be assembled and deployed, but the connection parts may separate when tensile force is applied during insertion and expansion
Solution Approach 1:
A locking part is formed on the wire part before insertion into the junction pipe. This preliminary structural preparation ensures that when tensile force is applied during stent deployment, the locking part engages with the junction pipe to prevent separation, thereby resolving the contradiction between connection stability and tensile force resistance
Solution Approach 2:
The locking part acts as an intermediary mechanical feature between the wire part and the junction pipe. It provides a positive engagement mechanism that mediates the connection, ensuring that tensile forces are transmitted through the locked interface rather than causing separation, thus improving both connection stability and tensile strength
2Adaptability or versatility
If the stent is designed with multiple connection parts (stent main wire to strut, stabilizer hook to junction pipe), then the stent can perform multiple functions (support, stabilization, positioning), but the complexity of ensuring all connections remain stable under load increases
Solution Approach 1:
The connection system is segmented into modular components: the junction pipe serves as a central connection hub, the locking part is integrated into the wire part, and the caulking provides additional securation. This segmentation allows each component to perform its specific function while maintaining overall system stability, managing the complexity of multiple connection points
Solution Approach 2:
Multiple connection functions are merged into a single junction pipe structure that simultaneously connects the stent main wire, strut, and stabilizer hook. The locking part and caulking work together in the same connection interface, reducing the number of separate connection mechanisms needed and simplifying the overall connection structure while maintaining versatility
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 stent maintains high reliability and stability, preventing separation of the wire parts during insertion and expansion, allowing for effective long-term reinforcement of tubal tissues without compromising structural integrity.
Implementation Method 1
a locking part which is locked to the junction pipe is formed on the wire part which is inserted into the junction pipe
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
It is an object of the present invention to prevent a wire part including a stabilizer hook, a strut or the pulling-back member from separating from a connection part even when a force in a tensile direction is applied to a stent. A stent 1 having a connection part in which wire parts including a stent main wire 2, a strut 4 and a stabilizer hook 5 are connected to each other through a junction pipe 7, wherein a locking part which is locked to the unction pipe 7 is formed on the wire part which is inserted into the junction pipe 7.