Textile Prosthesis with Resilient Frame for Laparoscopic Hernia Repair
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Solution Overview
Problem
Current wall reinforcement prostheses for hernia repair face challenges in being easily introduced through small-diameter trocars during laparoscopic surgery due to their size and complexity in deployment, risking tissue damage and improper placement.
Innovation Solution
A biocompatible prosthesis with a resilient frame connected along its peripheral edge, featuring U-shaped bends that allow it to be compactly folded for easy passage through small trocars and automatically deploy once outside, ensuring proper anatomical alignment and minimizing the risk of tissue adhesion or organ entrapment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the prosthesis is introduced through a small-diameter trocar, then the incision size is minimized and patient trauma is reduced, but the prosthesis cannot be easily conveyed and deployed
Solution Approach 1:
The prosthesis incorporates a resilient frame that can dynamically change its configuration between a compressed state for insertion through the trocar and an expanded state for deployment at the implantation site. This dynamic transformation allows the prosthesis to adapt to the spatial constraints of the trocar while maintaining its functional integrity during deployment.
Solution Approach 2:
The prosthesis is designed to be nested or folded within itself during the insertion phase, allowing it to pass through the small-diameter trocar. Once positioned, the nested structure unfolds or expands to achieve its full functional configuration at the implantation site, effectively solving the size contradiction between insertion and deployment states.
2Ease of operation
If the prosthesis is rolled up to fit in the trocar, then it can be conveyed through the conduit, but the deployment process becomes complex and time-consuming
Solution Approach 1:
The prosthesis is pre-configured with a resilient frame structure that maintains a predetermined compressed configuration for easy insertion. This preliminary preparation eliminates the need for complex rolling or folding operations during surgery, reducing deployment time while ensuring proper conveyance through the trocar.
Solution Approach 2:
The resilient frame automatically transitions the prosthesis from its compressed insertion state to its expanded functional state upon deployment, without requiring complex manual manipulation by the surgeon. This self-transforming capability significantly reduces deployment time and procedural complexity.
3Ease of operation
If the prosthesis is compressed for insertion, then it fits through the trocar, but the textile may form a plug and become difficult to remove
Solution Approach 1:
The prosthesis utilizes a flexible textile structure that can be compressed into a thin, conformable configuration for insertion through the trocar. The flexibility of the textile allows it to navigate the conduit without forming a rigid plug, while maintaining the ability to expand to its full functional form upon deployment, ensuring reliable conveyance and removal.
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 prosthesis can be easily introduced and deployed without additional tools, reducing the risk of tissue damage and ensuring proper placement, facilitating minimally invasive surgery and enhancing post-surgical outcomes.
Implementation Method 1
said frame being able to adopt an unstressed configuration, in which said textile is deployed, and a stressed configuration, in which said frame is subjected to a radial force directed towards said longitudinal axis and said textile forms at least one longitudinal fold
Data Source
AI summary
The invention relates to a prosthesis (1) comprising a textile (2) of elongate shape defining a longitudinal axis A, and a resilient frame (3) connected to said textile along substantially the peripheral edge of the textile, said frame forming, in the area of each short side of the textile, at least one U-shaped bend (4) extending in the direction of the longitudinal axis, said frame being able to adopt an unstressed configuration, in which said textile is deployed, and a stressed configuration, in which said frame is subjected to a radial force directed towards said longitudinal axis and said textile forms at least one longitudinal fold.