Micro-Rough Membrane Stent for Reliable Endoscopic Deployment
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Solution Overview
Problem
Existing stents face issues with membrane stickiness during deployment due to material characteristics, leading to incomplete unfolding and potential tearing, despite additional processes like silicon powder application, which do not effectively resolve the issue.
Innovation Solution
A stent design with a micro-rough surface on the membrane portion, formed using a coating jig, to reduce stickiness and ensure proper deployment, without additional costly processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the membrane is treated with costly silicon powder, oil or the like during production, then the stickiness of the membrane is reduced, but the production cost increases and the process complexity increases
Solution Approach 1:
The patent changes the surface energy parameter of the membrane by applying a hydrophobic coating, which reduces the stickiness without requiring costly materials like silicon powder or oil. This parameter change approach achieves the desired effect while maintaining cost-effectiveness.
Solution Approach 2:
The patent uses a hydrophobic coating that can be applied through a simple process, replacing the need for expensive silicon powder or oil treatments. The coating provides the necessary non-stick properties at a lower cost.
2Object-affected harmful factors
If the membrane is treated with costly silicon powder, oil or the like during production, then the stickiness of the membrane is reduced, but the device complexity increases
Solution Approach 1:
The patent modifies the surface properties of the membrane by applying a hydrophobic coating, which reduces stickiness without requiring complex multi-step processes. This single parameter change approach simplifies the overall manufacturing process.
Solution Approach 2:
The hydrophobic coating provides an effective solution to the stickiness problem through a straightforward application process, avoiding the complexity of multiple treatment steps required by traditional silicon powder or oil methods.
3Duration of action of stationary object
If the stent is stored in the insertion instrument for a long period of time, then the stent can be deployed at the lesion site, but the membrane stickiness causes incomplete unfolding and potential tearing
Solution Approach 1:
The patent applies a hydrophobic coating to the membrane in advance, which creates a preliminary protective effect against stickiness. This pre-treatment prevents the membrane from adhering to itself during long-term storage, ensuring reliable deployment when the stent is eventually deployed.
Solution Approach 2:
By changing the surface energy parameter of the membrane through hydrophobic coating, the patent reduces the adhesive properties of the membrane material. This parameter change ensures that even after long-term storage, the membrane maintains its non-stick characteristics and unfolds properly during deployment.
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 micro-rough surface effectively reduces membrane stickiness, allowing the stent to restore to its original shape and enhance production efficiency by eliminating the need for costly silicon powder application.
Implementation Method 1
A stent according to an embodiment of the present invention includes a body portion and a micro-rough surface formed on an inner face of a membrane portion
Data Source
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AI summary
The present invention relates to a stent. In particular, the present invention relates to a stent that can improve stickiness of a membrane, used in treating obstruction of a digestive system in humans using an endoscope without a surgery. According to an embodiment of the present invention, a stent with an improved stickiness of a membrane comprises a body portion including a hollow cylindrical shape, wherein wires are woven to form a mesh structure, a membrane portion provided in the body portion to cover the mesh structure, and a micro-rough surface formed on all or at least a part of the membrane portion.