Fluorinated Hernia Implant Surface
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Solution Overview
Problem
Current hernia implants often cause post-surgical tissue adhesions due to their brittleness and high surface weight, leading to restricted mobility and increased risk of further surgical interventions, especially when used for intraperitoneal implantation.
Innovation Solution
A medical implant made from fluorine-free polymers with a fluorine-containing layer on its surface, which is covalently bound to the polymer, providing hydrophobic properties and resistance to tissue adhesions, is developed. The implant is designed to be simple and inexpensive to produce, with a focus on preventing adhesions by using a textile structure and controlled fluorine gas treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluoropolymer coatings are applied to hernia implants to prevent tissue adhesions, then adhesion resistance is improved, but surface weight and production cost increase
Solution Approach 1:
The patent applies gas-phase fluorination to modify the surface chemistry of the implant threads, changing the surface properties to be fluorine-containing without adding significant mass. This chemical modification approach achieves hydrophobicity and adhesion resistance while maintaining the lightweight characteristic of the base polymer mesh.
Solution Approach 2:
The invention creates a composite structure where fluorine-containing groups are incorporated onto the surface of the polymer threads through gas-phase fluorination. This results in a mesh with fluorinated surface layers that provide adhesion resistance while the bulk material maintains its original lightweight properties.
2Reliability
If fluoropolymer coatings are applied to hernia implants to prevent tissue adhesions, then adhesion resistance is improved, but production cost increases
Solution Approach 1:
The patent replaces traditional mechanical coating methods (such as film or foil coatings) with gas-phase fluorination. This chemical vapor deposition process allows fluorine to be deposited directly onto the mesh structure in a controlled manner, eliminating the need for separate coating steps and reducing overall production complexity and cost.
Solution Approach 2:
By using gas-phase fluorination, the patent changes the surface properties of the implant through chemical modification rather than physical coating. This approach integrates the adhesion-resistant fluorine-containing layer directly into the manufacturing process, avoiding additional costly coating steps and reducing production complexity.
3Reliability
If films or foils are used as tissue adhesion-resistant coatings, then adhesion resistance is improved, but brittleness increases leading to tissue infiltration
Solution Approach 1:
The patent modifies the surface chemistry of the implant threads through gas-phase fluorination, changing the surface properties to be fluorine-containing without adding a separate brittle film layer. This chemical modification approach achieves hydrophobicity and adhesion resistance while maintaining the flexibility and mechanical properties of the base polymer mesh.
Solution Approach 2:
The invention creates a composite structure where fluorine-containing groups are incorporated onto the surface of the polymer threads through gas-phase fluorination. This results in a mesh with fluorinated surface layers that provide adhesion resistance while the bulk material maintains its original flexible and mechanically sound properties.
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 implant significantly reduces post-surgical tissue adhesions, maintaining flexibility and mechanical properties, as demonstrated by animal experiments showing reduced adhesion areas compared to untreated meshes.
Implementation Method 1
The implant has a hydrophobic character due to its surface fluorine-containing layer
Data Source
AI summary
The invention relates to a medical implant made of polymers that are inherently fluorine-free, in particular for the treatment of hernias, wherein the implant at least partially comprises threads which have at least partially a fluorine-containing layer on their surface.