3D Surgical Mesh Shaping for Precise Groin Anatomy Fit
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Solution Overview
Problem
Existing surgical meshes for hernia repair have issues with insufficient adaptation to anatomical structures, leading to potential recurrence and difficulty in fixation during implantation due to conformational variations and approximate dimensioning.
Innovation Solution
A three-dimensional surgical mesh is designed with a toroidal, cylindrical, and spherical surface configuration, manufactured from non-absorbable elastic materials like polypropylene, using a customized mold based on CT scans to fit the groin anatomy, and processed through heating and trimming to ensure precise fit and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If average dimensions are used for surgical mesh implants, then manufacturing is simplified, but adaptation to anatomical structures becomes insufficient leading to hernia recurrence
Solution Approach 1:
The patent applies parameter changes by creating multiple mesh variants with different dimensions (small, medium, large sizes) and geometric configurations (different curvature radii, diameters, and shapes) to precisely match various anatomical structures. This allows the mesh to be manufactured with specific parameters rather than average values, improving anatomical adaptation while maintaining manufacturing feasibility through standardized production processes for each variant.
Solution Approach 2:
The patent segments the surgical mesh product line into distinct variants (small, medium, large sizes with different geometric parameters) to address different anatomical requirements. Each variant is manufactured as a separate standardized product, allowing precise anatomical adaptation without complicating the manufacturing process for any single variant.
2Ease of manufacture
If flat mesh is used, then manufacturing is simple, but conformational variations cause difficulty in holding correct position during fixation
Solution Approach 1:
The patent applies curvature by manufacturing the mesh in a pre-formed three-dimensional spatial configuration that matches the anatomical contours of the hernia defect. The mesh includes curved surfaces and three-dimensional structures that conform to the body's anatomy, eliminating the need for intraoperative folding and creasing while maintaining manufacturing simplicity through mold-based production.
3Area of stationary object
If insufficient peripheral coverage is provided, then mesh size is reduced, but additional fixation becomes necessary increasing surgical complexity
Solution Approach 1:
The patent applies parameter changes by designing mesh variants with optimized dimensions that provide sufficient peripheral coverage (extending beyond the hernia defect by appropriate margins) while maintaining suitable overall size. The geometric parameters (diameters, curvature radii, shapes) are specifically tailored to ensure adequate coverage that enables self-fixation without additional fixation devices.
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 mesh provides a secure fit without additional fixation, adapting to various hernia types and surgical procedures, enhancing surgical ease and reducing recurrence risks.
Implementation Method 1
The prepared mold with the mesh applied to it is heated to a temperature between 140°C and 168°C for 6 to 8 minutes
Implementation Method 2
The thermally stabilized mesh is then removed from the mold
Data Source
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AI summary
The invention relates to a method for producing a three-dimensional surgical mesh from a non-absorbable, flexible material. According to the invention, a surgical mesh is placed on a curved template corresponding to the human groin area, which comprises the following surfaces: - a toroidal surface (2), - a cylindrical surface (4), - a spherical surface (3), and - a flat surface (1), - wherein the cylindrical surface (4) forms a trough (9).