Barbed Tissue Fixation Device for Hernia Mesh
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Solution Overview
Problem
Current methods for securing surgical mesh during hernia repair, such as using stay sutures, are time-consuming and can cause pain due to abdominal wall and nerve compression.
Innovation Solution
A tissue fixation device with an elongated body and barbed segments, where the barbed segments are secured to a pledget, which can be used to attach the mesh to tissue without the need for knots, reducing tissue compression and simplifying the fixation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stay sutures are used to secure surgical mesh, then the mesh can be fixed to tissue, but the procedure time increases and pain is caused due to abdominal wall and nerve compression
Solution Approach 1:
The invention extracts the problematic knot-tying step from the traditional suture process. The barbed segments are pre-configured on the elongated body to automatically engage tissue and mesh without requiring manual knot formation, thereby eliminating the time-consuming knot-tying operation while maintaining secure fixation.
Solution Approach 2:
The barbed segments are designed to self-engage with the tissue and mesh automatically upon insertion. The barbs on the elongated body automatically catch and hold the mesh material, eliminating the need for manual manipulation and knot tying, thus reducing procedure time while ensuring reliable fixation.
2Reliability
If stay sutures are used to secure surgical mesh, then the mesh can be fixed to tissue, but pain is caused due to abdominal wall and nerve compression
Solution Approach 1:
The invention removes the knot-tying step that causes compression of the abdominal wall and nerves. By using barbed segments that secure mesh through mechanical engagement rather than compression knots, the harmful compressive forces are eliminated while maintaining fixation security.
Solution Approach 2:
The invention replaces the mechanical compression mechanism (knots) with a mechanical engagement mechanism (barbs). Instead of compressing tissue with tight knots, the barbed segments engage tissue and mesh through interlocking barbs that secure the mesh without requiring high compressive forces, thereby reducing pain and tissue damage.
3Reliability
If traditional suture methods are used, then mesh can be secured, but the complexity of the fixation process increases
Solution Approach 1:
The invention merges the functions of piercing, securing, and fixing into a single integrated elongated body with barbed segments. The elongated body simultaneously performs tissue penetration, mesh engagement, and securement in one action, eliminating the need for separate steps of threading, tying, and trimming sutures, thus simplifying the overall fixation process.
Solution Approach 2:
The barbed segments are designed to automatically engage and secure the mesh upon insertion without requiring additional manual steps. The barbs self-lock into the mesh and tissue, eliminating the need for manual knot tying and adjustment, thereby reducing process complexity while maintaining secure fixation.
Data Source
Figure 1~3C
Figure 4A~6D
Figure 6E~7E
AI summary
A tissue fixation device includes an elongated body defining a longitudinal axis and including a proximal end and a distal end. At least two barbed segments diverge distally away from the distal end of the elongated body and a pledget is disposed at distal ends of the barbed segments. The elongated body, barbed segments, and pledget are provided in a variety of configurations depending upon the performance requirements desired of the tissue fixation device for the envisaged application of use.