Hydrogel-Coated Tissue Repair Membrane for Suture-Free Nerve Repair
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Solution Overview
Problem
Existing nerve repair methods require additional medical devices like sutures or clips, which can cause trauma and adhesions, and existing membranes are mechanically weak and prone to migration, complicating surgical procedures and nerve regeneration.
Innovation Solution
A self-adhesive tissue repair membrane with a biocompatible hydrogel coating, such as hyaluronic acid, providing lubrication and minimal adhesion to surrounding tissue, allowing for easier manipulation and reduced trauma during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If existing membranes are used for nerve repair, then they provide a barrier function, but they are mechanically weak and cannot be effectively manipulated or secured
Solution Approach 1:
The patent applies composite materials by combining a mechanically strong base membrane (such as collagen, synthetic polymers, or eukaryotic cell membrane) with a lubricating coating layer. This composite structure provides both the mechanical strength needed for manipulation and the lubrication needed for smooth placement, resolving the contradiction between strength and ease of operation.
Solution Approach 2:
The patent uses flexible thin film structures for the membrane itself, allowing it to be conformable to nerve shapes while maintaining sufficient mechanical integrity. The flexible shell approach enables the membrane to be manipulated during surgery without requiring strong sutures or clips for securing.
2Reliability
If sutures or clips are used to secure the membrane, then the membrane can be fixed to the nerve, but additional trauma and adhesions are caused
Solution Approach 1:
The patent employs self-adhesive properties of the membrane through the lubricating coating, which allows the membrane to adhere to the nerve surface without requiring external securing devices. This self-service approach eliminates the need for sutures or clips, thereby preventing additional trauma and adhesion formation while maintaining reliable membrane fixation.
Solution Approach 2:
The patent extracts and removes the harmful securing devices (sutures, clips, and their associated trauma and adhesions) from the nerve repair system. By using a membrane that inherently adheres through its lubricating coating, the unnecessary securing components are eliminated entirely, reducing harmful factors while maintaining the essential function of nerve protection.
3Reliability
If additional securing devices are used, then the membrane can be fixed, but the surgical procedure becomes more complex and time-consuming
Solution Approach 1:
The patent merges the functions of the membrane and its securing mechanism into a single integrated component. The lubricating coating simultaneously provides the membrane's protective function and its adhesion function, eliminating the need for separate sutures, clips, or other securing devices. This merging reduces device complexity and surgical steps while maintaining reliable fixation.
Solution Approach 2:
The lubricating coating on the membrane serves multiple functions: it provides lubrication for smooth placement, enables self-adhesion to the nerve surface, and eliminates the need for separate securing devices. This multi-functionality reduces the overall number of medical devices required and simplifies the surgical procedure while ensuring reliable membrane fixation.
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
Simplifies surgical procedures, reduces potential for fibrosis and trauma, and enhances nerve regeneration by enabling flexible membrane positioning and lubricated tissue interaction.
Implementation Method 1
providing lubrication to reduce undesired interaction, e.g., friction, with surrounding or adjacent matter
Implementation Method 2
capable of surrounding injured tissue, may be self-adhesive
Data Source
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AI summary
Provided herein is a tissue repair membrane with a hydrogel polymer. The tissue repair membrane can provide adhesion and/or lubrication to assist with the use and implantation of the tissue repair membrane, and to facilitate healing and/or avoid or minimize damage to adjacent, e.g., tissues, during or after implantation.