Hernia Prosthesis Radial Tabs Y-Fastening Stability
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Solution Overview
Problem
Existing hernia prostheses and their associated inserter devices suffer from instability during implantation and removal, leading to suboptimal performance.
Innovation Solution
A novel hernia prosthesis design featuring a disc-shaped bottom and top plates with radial tabs and a one-piece body with a sheath and Y-fastening configuration, providing enhanced stability and secure attachment for the inserter device, ensuring stable implantation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional bag-shaped prosthesis with simple opening is used, then the prosthesis structure is simple and easy to manufacture, but the inserter device becomes unstable during implantation and removal
Solution Approach 1:
The prosthesis is divided into a first portion (bag with opening) and a second portion (one-piece body with zones), where each segment serves specific functions. The one-piece body is further divided into three distinct successive zones (first zone for insertion, second zone for positioning, third zone for removal) to provide structured support and stability to the inserter device throughout the implantation process.
Solution Approach 2:
The prosthesis transitions from a simple two-dimensional bag shape to a three-dimensional structure with multiple functional zones and radial tabs extending in different directions. The one-piece body adds vertical dimension with its three successive zones, and radial tabs extend horizontally to provide multidirectional support for the inserter device, enhancing stability without excessive complexity.
2Ease of manufacture
If the prosthesis has a simple bag shape with minimal structure, then manufacturing is easier, but the inserter device cannot be securely attached or positioned
Solution Approach 1:
The prosthesis is divided into a first portion (bag with opening) and a second portion (one-piece body with zones), where each segment serves specific functions. The one-piece body is further divided into three distinct successive zones (first zone for insertion, second zone for positioning, third zone for removal) to provide structured support and stability to the inserter device throughout the implantation process.
Solution Approach 2:
The radial tabs act as intermediary elements between the prosthesis body and the inserter device. These tabs provide attachment points that facilitate secure connection and stable positioning of the inserter device during implantation and removal operations, bridging the gap between the simple bag structure and the complex inserter device requirements.
3Device complexity
If conventional prosthesis designs are used, then the overall structure remains simple, but force distribution during implantation is poor leading to tilting and instability
Solution Approach 1:
Different regions of the prosthesis are given different properties and functions. The one-piece body has three distinct successive zones with varying characteristics: the first zone provides insertion support, the second zone provides positioning stability, and the third zone facilitates removal. Radial tabs are strategically positioned to distribute forces locally, preventing tilting and enhancing overall stability during critical implantation phases.
Solution Approach 2:
The prosthesis is divided into a first portion (bag with opening) and a second portion (one-piece body with zones), where each segment serves specific functions. The one-piece body is further divided into three distinct successive zones (first zone for insertion, second zone for positioning, third zone for removal) to provide structured support and stability to the inserter device throughout the implantation process.
Data Source
AI summary
A hernia prosthesis includes a first portion defining a bag joined to a second portion constituting a one-piece body. A top plate of the first portion has a plurality of radial tabs around a central opening. The second portion has three distinct successive zones including a first median zone in the form of a very long sheath for introducing and securing an inserter-unfolder device. The median portion is prolonged downwards by a plurality of bands uniformly radially disposed and having bottom ends divided into two each respectively to form two tongues in a Y fastening configuration. Each tongue is fastened by its terminal end to one of the tabs. The second portion, in a top zone, beyond the sheath, comprises two very high tongues which have, in their top portion, a longitudinal slit in their width for attaching the inserter-unfolder device.