Segmented Parastomal Hernia Implant with Anti-Adhesive Films
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Solution Overview
Problem
Existing prostheses for treating parastomal hernias are not adaptable to all types of stomas, particularly indirect stomas, and do not effectively strengthen the abdominal wall to prevent hernias around stoma formations.
Innovation Solution
A biocompatible implant with a porous structure, covered by anti-adhesive material on both surfaces, featuring a first part for contact with the stoma organ and a second part for reinforcement of the abdominal wall, promoting tissue growth and adaptation to both direct and indirect stoma configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a prosthesis is implanted to strengthen the abdominal wall, then hernia prevention is improved, but adaptability to different stoma types (particularly indirect stomas) deteriorates
Solution Approach 1:
The prosthesis is divided into two distinct parts: a first part with first thickness E1 for contact with the stoma organ, and a second part with second thickness E2 for reinforcement of the abdominal wall. This segmentation allows each part to be optimized for its specific function and enables adaptation to different stoma configurations including indirect stomas.
Solution Approach 2:
Different regions of the prosthesis are given different properties: the first part has thinner thickness and anti-adhesive material coverage on both surfaces for organ contact, while the second part has greater thickness for structural reinforcement. This local differentiation enables the prosthesis to effectively handle various stoma types while maintaining hernia prevention capability.
2Ease of manufacture
If the prosthesis is designed with uniform thickness, then manufacturing is simplified, but effectiveness in protecting the stoma organ and strengthening the abdominal wall simultaneously deteriorates
Solution Approach 1:
The prosthesis is segmented into two parts with different thicknesses (E1 for organ contact, E2 for wall reinforcement where E2 > E1). This segmentation enables each region to perform its specific function optimally while remaining manufacturable through standard medical device fabrication processes.
Solution Approach 2:
The prosthesis implements local quality by varying thickness across different regions: thinner (E1) where flexibility and organ protection are needed, and thicker (E2) where structural support is required. This approach maintains manufacturing feasibility while achieving superior overall effectiveness.
3Stability of the object's composition
If the prosthesis surface is left uncovered, then tissue integration is improved, but adhesion to hollow organs deteriorates
Solution Approach 1:
The prosthesis applies anti-adhesive material coverage selectively: the first part has both surfaces covered to protect the stoma organ from adhesion, while the second part has only the abdominal wall-facing surface covered, leaving the opposite surface uncovered to promote tissue integration and colonization.
Solution Approach 2:
The anti-adhesive material acts as an intermediary layer between the prosthesis and biological tissues. It prevents harmful adhesion to hollow organs where needed, while allowing beneficial tissue integration in regions where the material is absent or permeable.
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 effectively protects hollow organs and strengthens the abdominal wall, preventing hernias regardless of stoma type, by using a porous structure with anti-adhesive films to prevent adhesions and promote tissue colonization.
Implementation Method 1
a porous structure including a surface intended to face the abdominal cavity
Implementation Method 2
covered by a first film of anti-adhesive material
Data Source
AI summary
An implant for the prevention or treatment of a hernia in the proximity of an organ stoma formed in an abdominal wall includes a porous structure having a surface intended to face the abdominal cavity covered by a first film of anti-adhesive material. The porous structure includes a first part intended to be in contact with a stoma organ and having a first thickness, and a second part having a second thickness greater than the first thickness, the first part including a surface intended to face the abdominal wall covered by a second film of anti-adhesive material.