Barbed Filament Mesh for Hernia Repair Positioning
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Solution Overview
Problem
Current hernia repair devices face challenges in properly positioning and securely affixing surgical mesh due to anatomical spatial constraints and limited access, leading to issues like re-herniation and dislodging.
Innovation Solution
A hernia repair device featuring a mesh with barbed filaments that extend from the central portion to the periphery, providing radial structural support and a removable protective sheath, allowing for incremental advancement through tissue to secure the mesh in place, with barbs angled to prevent retreat and facilitate precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If surgical mesh is used to reinforce the abdominal wall, then the strength of the tissue defect is improved, but the mesh may dislodge or re-herniate due to improper positioning or affixing
Solution Approach 1:
The hernia repair device divides the mesh into multiple segments or portions, each capable of being independently positioned and secured within the tissue defect. This segmentation allows for more precise placement and reduces the risk of overall dislodgement, as each segment can be individually anchored to surrounding tissue structures.
Solution Approach 2:
The device incorporates features that enable preliminary positioning and temporary securing of the mesh segments before final fixation. This preliminary action allows the surgeon to adjust and verify proper placement before committing to permanent attachment, thereby improving positioning reliability.
2Reliability
If the mesh is secured to surrounding tissue, then the reliability of the repair is improved, but the complexity of the procedure increases due to anatomical spatial constraints and limited access
Solution Approach 1:
The hernia repair device incorporates self-securing mechanisms that automatically engage with surrounding tissue without requiring complex external fixation tools. The mesh segments include integrated anchoring features that self-lock into place, reducing procedural complexity while maintaining securing effectiveness.
Solution Approach 2:
The device introduces intermediary elements such as anchoring tacks or fixation elements that mediate between the mesh and surrounding tissue. These intermediaries simplify the securing process by providing standardized attachment points, reducing the need for complex suturing or stapling procedures in constrained anatomical spaces.
3Ease of operation
If the mesh is made resiliently deformable, then the ease of insertion is improved, but the structural support capability may be reduced
Solution Approach 1:
The mesh is designed with dynamic properties that allow it to transition between deformable and rigid states. During insertion, the mesh exhibits high deformability to navigate anatomical constraints. Once positioned, the mesh transitions to a more rigid state to provide necessary structural support, achieving both ease of insertion and structural integrity.
Solution Approach 2:
The mesh is divided into multiple segments with varying degrees of deformability. Certain portions are designed to be more resilient for easy insertion, while other segments maintain higher structural rigidity to provide support. This segmented approach allows simultaneous optimization of both insertion ease and structural capability.
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 device ensures accurate and secure placement of the mesh, reducing the risk of re-herniation by providing radial structural support and incremental adjustment capabilities, while the protective sheath prevents injury during handling.
Implementation Method 1
the filaments provide radial structural support to the mesh
Implementation Method 2
Each filament includes a plurality of barbs disposed along a portion or the entire length thereof
Data Source
AI summary
A hernia repair device includes a mesh configured figured to extend across a tissue defect and a plurality of filaments coupled to the mesh. The filaments are coupled to the mesh in proximity of an outer periphery thereof and extend from a central portion of the mesh. Each filament includes a plurality of barbs disposed along at least a portion of the length thereof. Each filament further includes a needle disposed at a free end thereof.