Laparoscopic Hernia Mesh Patch with Adhesive Fixation
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Solution Overview
Problem
Current mesh patches for laparoscopic hernia surgery require large cannulas for insertion, are cumbersome to deploy, and often necessitate multiple trocars and extensive tissue handling, leading to increased surgical time and risk of complications.
Innovation Solution
A flexible mesh patch made of biocompatible polymer with an adhesion layer for secure attachment to the peritoneum and an anti-adhesion layer to prevent intestinal adhesion, featuring a protection film that can be easily detached to facilitate smooth unfolding and attachment through a single port, allowing for secure fixation without stapling or stitching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cylindrical mesh patch supported by shape memory alloy wire is used, then the mesh can be tightly rolled for delivery through laparoscopic instrument, but a cannula of significant size is needed
Solution Approach 1:
The mesh patch is divided into multiple segments or panels that can be folded or segmented into a compact configuration for insertion, then assembled or deployed within the body. This allows the mesh to be inserted through smaller trocars while still providing adequate coverage when deployed.
Solution Approach 2:
The mesh patch transitions from a flat two-dimensional configuration to a three-dimensional folded or segmented configuration for insertion, then expands to its full two-dimensional surface area upon deployment. This dimensional transformation allows passage through smaller openings while maintaining adequate coverage.
2Reliability
If traditional TEP with monofilament mesh is used, then hernia repair can be performed, but three laparoscopic trocars are needed and extensive tissue stripping is required
Solution Approach 1:
The mesh patch is designed with multi-functional capabilities including self-fixation through adhesives, integrated protection films, and built-in deployment mechanisms that eliminate the need for separate fixation procedures and multiple trocars. A single patch performs multiple functions: reinforcement, fixation, and protection.
Solution Approach 2:
The mesh patch incorporates self-fixation mechanisms such as adhesive coatings that automatically bond to the peritoneum upon contact, eliminating the need for external fixation devices, staples, or extensive tissue manipulation. The patch repairs itself through integrated biochemical or mechanical fixation mechanisms.
3Loss of time
If mesh patch is inserted through single port, then surgical time is reduced, but the mesh must be easily unfolded and fixed without stapling or stitching
Solution Approach 1:
The mesh patch is pre-configured with adhesive coatings, protection films, and folded configurations before insertion. All necessary fixation mechanisms are prepared in advance on the patch itself, eliminating the need for intraoperative stapling or stitching. The patch is ready to self-fix upon deployment.
Solution Approach 2:
A protection film or adhesive layer serves as an intermediary between the mesh patch and the peritoneum. This intermediate layer facilitates smooth deployment through the single port while providing controlled adhesion upon contact, enabling easy fixation without direct mechanical stapling or stitching.
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
Enables efficient, single-port deployment and fixation of the mesh patch during laparoscopic hernia surgery, reducing surgical time and complications by minimizing tissue handling and adhesion to non-target tissues, while allowing for easy insertion through smaller trocars.
Implementation Method 1
an adhesion layer surface on a front surface of the mesh, the adhesion layer surface being coated with an adhesion inducing material to be fixedly attached to a peritoneum
Implementation Method 2
an anti-adhesion layer surface on a rear surface of the mesh, the anti-adhesion layer surface being coated with an anti-adhesion material so as not to adhere to intestines in an abdominal cavity
Data Source
AI summary
A mesh patch for a laparoscopic hernia surgery, which includes a flexible mesh, an adhesion layer surface, and an anti-adhesion layer surface. The flexible mesh is formed of a thin layer of filament using a biocompatible polymer. The adhesion layer surface is disposed on a front surface of the mesh. The adhesion layer surface is coated with an adhesion inducing material to be fixedly attached to a peritoneum. The anti-adhesion layer surface is disposed on a rear surface of the mesh. The anti-adhesion layer surface is coated with an anti-adhesion material so as not to adhere to intestines in an abdominal cavity. The protection film is detachably attached to the adhesion layer surface and the anti-adhesion layer surface to protect the mesh. Here, the protection film is easily detached by a laparoscopic instrument, and has an adhesive strength such that the mesh is unfolded upon detaching.