Hernia Prosthesis Flap Barrier for Adhesion Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hernia repair methods using prostheses face challenges with postoperative complications and recurrence due to adhesions between the prosthesis and visceral organs in the abdominal cavity, especially during intraperitoneal procedures.
Innovation Solution
A prosthesis design featuring a reinforcement layer for tissue ingrowth, a first barrier layer to prevent adhesions with the abdominal cavity, and a second barrier layer with flap members to create protected spaces for fixing means, ensuring these means do not contact visceral organs, thereby reducing adhesion risks and facilitating safe fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the prosthesis is fixed directly to the abdominal wall without barrier layers, then the fixation is simple and direct, but adhesions form between the prosthesis and visceral organs causing postoperative complications
Solution Approach 1:
The prosthesis is divided into multiple functional layers: a reinforcement layer for structural support, a first barrier layer (anti-adhesion membrane) to prevent adhesions with visceral organs, and a second barrier layer with flap members to protect fixing means. This segmentation allows each layer to perform its specific function independently, resolving the contradiction between adhesion prevention and structural simplicity.
Solution Approach 2:
The first barrier layer acts as an intermediary between the reinforcement layer and the abdominal cavity, preventing direct contact between the prosthesis and visceral organs. The second barrier layer with flap members serves as an intermediary to protect the fixing means from contacting visceral organs, thereby preventing adhesion formation without compromising fixation effectiveness.
2Reliability
If the prosthesis includes barrier layers to prevent adhesions, then postoperative complications are reduced, but the device complexity and surgical difficulty increase
Solution Approach 1:
The barrier layers are pre-assembled with the reinforcement layer before implantation, with the first barrier layer already positioned on the abdominal cavity side and the second barrier layer with flap members prepared to cover fixing means. This preliminary assembly simplifies the surgical process by reducing the need for complex intraoperative manipulations despite the enhanced protective functionality.
3Reliability
If fixing means are exposed without protection, then fixation to the abdominal wall is effective, but visceral organs adhere to the fixing means causing recurrence
Solution Approach 1:
The second barrier layer with movable flap members is designed to cover and protect the fixing means after they penetrate the abdominal wall. The flap members can be positioned to shield the fixing means from contacting visceral organs, effectively extracting the fixing means from potential adhesion zones while maintaining their fixation function.
Solution Approach 2:
The flap members of the second barrier layer are designed to be movable, allowing them to be positioned dynamically during surgery to cover the fixing means. This dynamic capability enables the prosthesis to adapt to different surgical scenarios and effectively protect fixing means from adhesion formation.
Data Source
AI summary
The present invention relates to a prosthesis (1) for hernia repair comprising a reinforcement layer (2), a first barrier layer (3) of anti-adhesion material covering at least a part of a surface of the reinforcement layer, and a second barrier layer of anti-adhesion material covering a remaining part of the surface of the reinforcement layer, the second barrier layer being formed of one or more flap member(s) (4).