Prosthetic Knit Spiked Naps Self-Locking Hernia Repair
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Solution Overview
Problem
Existing prosthetic knits for tissue reinforcement in hernia repair lack simplicity and speed of placement, often requiring additional operations for joining elements and may irritate surrounding tissues due to mechanical limitations and pore size.
Innovation Solution
A prosthetic knit with spiked naps on one face, made from biocompatible monofilament and multifilament yarns, which can be thermofused to form outer loop-shaped meshes and penetrate into the textile structure of another knit for secure locking, allowing for self-fastening and reduced tissue irritation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional operations for joining elements are performed, then mechanical resistance is improved, but placement time and complexity increase
Solution Approach 1:
The prosthetic knit is designed with self-fastening capability through spiked naps that automatically penetrate and lock into the textile structure of another knit element, eliminating the need for additional joining operations by surgeons while maintaining mechanical resistance
Solution Approach 2:
The joining function is merged with the placement operation itself - the spiked naps perform both the penetration/anchoring function and the mechanical fastening function in a single action, combining multiple operations into one step
2Strength
If elements are joined by stitching or welding, then mechanical resistance is improved, but device complexity increases
Solution Approach 1:
The system performs its own joining function through the self-penetration and self-locking mechanism of the spiked naps, eliminating the need for external stitching or welding operations and reducing overall device and procedural complexity
Solution Approach 2:
The joining function is extracted from the surgical procedure and integrated into the prosthetic knit design itself, removing the need for separate joining tools, materials, and操作步骤
3Reliability
If pore size is reduced to prevent hernia recurrence, then reliability is improved, but tissue integration and elasticity are worsened
Solution Approach 1:
The prosthetic knit exhibits different properties at different locations: the spiked naps provide localized mechanical anchoring and hernia prevention at critical points, while the overall knit structure maintains macroporosities for tissue integration and elasticity in regions requiring physiological deformation
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 prosthetic knit enables simplified and rapid placement with enhanced mechanical resistance and tissue integration, reducing the risk of irritation and recurrence of hernias while maintaining adjustability and biocompatibility.
Implementation Method 1
This knit can in particular be obtained using a thermofusible monofilament to constitute said monofilament sheet, forming outer loop-shaped meshes in said sheet
Implementation Method 2
spiked naps which protrude perpendicularly with respect to said sheet... penetrate into the textile structure of another knit for secure locking
Data Source
AI summary
A prosthetic knit for medical or surgical use which has a structure made of monofilament and/or multifilament yarn which is biocompatible and optionally partially bioabsorbable.According to the invention, this knit comprises a monofilament sheet forming, on one face of the knit, spiked naps which protrude perpendicularly with respect to said sheet, that is to say naps each having a substantially rectlinear body and, at the free end of this body, a head of greater width than that of this body.