Umbilical Hernia Prosthesis with Central Hinge Frame
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Solution Overview
Problem
Current hernia repair prostheses face challenges in being easily positioned and spread out on small hernia defects, such as umbilical hernias, due to limited working space and visibility, which can lead to incomplete deployment and incorrect fixation, increasing the risk of relapse and complications like adhesions and intestinal blockage.
Innovation Solution
A prosthesis with a flexible mesh and a reinforcing frame that can be folded for easy introduction through a small incision, featuring two hinge points allowing it to be unfolded and fixed centrally without peripheral sutures, ensuring optimal positioning and deployment against the abdominal wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the prosthesis is made flexible and folded to reduce volume for introduction, then the ease of operation is improved, but the risk of incomplete deployment and incorrect positioning increases
Solution Approach 1:
The prosthesis is divided into a central region and multiple radial segments that can fold independently along predefined lines. This segmentation allows the prosthesis to be compacted into a small volume for introduction through small incisions while ensuring that each segment can be reliably deployed to its correct position, preventing incomplete deployment.
Solution Approach 2:
The prosthesis is pre-configured with hinge points and folding lines that guide its deployment sequence. The radial segments are预先 arranged to unfold in a specific pattern that ensures complete coverage of the defect area. This preliminary configuration eliminates the need for complex intraoperative manipulation and ensures reliable deployment.
2Strength
If peripheral sutures are used to fix the prosthesis, then the fixation strength is improved, but the difficulty of operation and time required increase
Solution Approach 1:
The fixation function is extracted from the peripheral region of the prosthesis and concentrated at the central region. The prosthesis features a reinforced central area with integrated fixation elements that can be secured through the small incision without requiring peripheral sutures. This eliminates the need for complex peripheral fixation while maintaining adequate fixation strength.
Solution Approach 2:
The prosthesis incorporates an intermediary fixation mechanism at its center that mediates between the prosthesis body and the abdominal wall. This central fixation point serves as an anchor from which the radial segments naturally spread and adhere to the tissue, providing stable fixation without peripheral sutures.
3Object-affected harmful factors
If the prosthesis is introduced through a small incision, then the invasiveness is reduced, but the working space and visibility for manipulation decrease
Solution Approach 1:
The prosthesis is designed to nest within itself when folded, with radial segments containing smaller segments in a nested configuration. This allows the large-area prosthesis to be introduced through a small incision. Once inside the abdominal cavity, the nested structure unfolds to provide full working area without requiring a large incision.
Solution Approach 2:
The prosthesis transitions from a two-dimensional flat structure to a three-dimensional deployed configuration after introduction. The radial segments unfold in three-dimensional space within the abdominal cavity, providing adequate working area and visibility for fixation without requiring a large incision. This dimensional transition resolves the conflict between small incision and adequate working space.
Data Source
AI summary
The present disclosure relates to a prosthesis comprising: —at least one flexible mesh delimited by a peripheral exterior edge, —at least two tongues extending from one face of the mesh, and —at least one member for reinforcing said mesh, characterized in that said reinforcing member takes the form of a frame fastened to said mesh and substantially adopting the shape of said peripheral exterior edge of the mesh, said frame being set back from said peripheral exterior edge and being provided with two hinge points, the line passing through said two hinge points also passing through the center of the mesh and thus forming a line for folding the mesh in two.