Medical Implant Coating Adhesion via Binding Layer
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Solution Overview
Problem
Existing occluders face challenges with blood clotting, thrombosis, complex manufacturing processes, and short-term stability issues due to the use of artificial fibrous materials, which can lead to emboli and vascular occlusions, and require improved coatings for optimal blood flow restriction and long-term stability.
Innovation Solution
A method involving braiding or weaving strands to form a mesh with a first polymer coating providing binding force for a second coating, applied via spraying or electro-spinning, to enhance adhesion and restrict fluid flow, allowing for selective material distribution and optimized occluding properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If artificial fibrous material is used in an occluder to limit blood flow, then blood flow restriction is achieved, but blood clotting and thrombosis occur
Solution Approach 1:
The patent changes the material parameters from artificial fibrous material to biocompatible materials with specific surface properties that prevent thrombosis while maintaining blood flow restriction capability
Solution Approach 2:
The patent uses composite material structures combining different biocompatible materials to achieve both blood flow restriction and thrombosis prevention functions simultaneously
2Reliability
If internal fabric or external membrane is added to occluder to limit blood flow, then occluding ability is improved, but manufacturing complexity and time increase
Solution Approach 1:
The patent merges the blood flow restriction function directly into the occluder structure itself, eliminating the need for separate internal fabrics or external membranes
Solution Approach 2:
The occluder structure is designed to perform multiple functions including blood flow restriction and structural support through its own configuration, without requiring additional specialized components
3Object-affected harmful factors
If coating is applied to occluder surface to improve biocompatibility, then thrombosis risk is reduced, but coating adhesion and long-term stability are difficult to achieve
Solution Approach 1:
The patent applies surface treatment or preliminary coating preparation steps that ensure strong adhesion before applying the biocompatible coating layer
Solution Approach 2:
The patent uses an intermediary layer or surface treatment that mediates between the occluder material and the biocompatible coating, ensuring strong adhesion and long-term stability
4Manufacturing precision
If complex coating methods are used to achieve optimal blood flow restriction, then occluding precision is improved, but manufacturing time and complexity increase
Solution Approach 1:
The patent segments the coating application into controlled zones or layers that can be applied efficiently while achieving precise blood flow restriction characteristics
Solution Approach 2:
The patent optimizes coating parameters such as thickness, porosity, and material composition to achieve precise occluding function with simplified application processes
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 method improves the occluder's stability, reduces the risk of dislocation, and enhances biocompatibility and occluding ability by securely anchoring the coating, minimizing material interference and promoting long-term performance.
Implementation Method 1
said first coating provides a binding force to said second coating such that said second coating adheres to said strands
Implementation Method 2
said second coating is applied by spraying, electro-spinning, electro-spraying or nano-spinning
Implementation Method 3
said second coating is applied by spraying, electro-spinning, electro-spraying or nano-spinning
Implementation Method 4
said second coating is applied by spraying, electro-spinning, electro-spraying or nano-spinning
Implementation Method 5
to enhance adhesion and restrict fluid flow
Data Source
Figure 1~2c
Figure 3a~3c
Figure 4a~4b
AI summary
The disclosure relates to a medical implant for occluding an opening in a body and a method of producing such a medical implant. Disclosed is an improved occluder, which provides improved occlusion, improved sealing and improved endothelialization. A method is disclosed comprising braiding, knitting or weaving together strands to form a body mesh of strands forming a plurality of adjacent cells delimited by the strands. The method further comprises applying a first coating to said strands, and applying a second coating to at least part of an external surface of said medical implant, wherein said first coating provides a binding force to said second coating such that said second coating adheres to said strands.