Adherent Resorbable Matrix for Surgical Tissue Repair
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Solution Overview
Problem
Resorbable dural substitutes used in surgical procedures often migrate due to fluid presence, such as blood or cerebrospinal fluid, during surgery, necessitating an adherent matrix that remains in place despite aqueous environments.
Innovation Solution
A self-adhesive resorbable matrix with a polysaccharide adhesive layer, such as chitosan, applied to a biocompatible matrix sheet, like collagen, to enhance adherence and resist migration under fluid influence, promoting fibrin clot formation and tissue regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resorbable matrix is placed on tissue during surgery, then it provides a scaffold for tissue regeneration, but it migrates out of place due to fluid presence (blood, cerebrospinal fluid, irrigation fluid)
Solution Approach 1:
The adhesive layer is applied to the matrix surface before implantation, creating a pre-prepared sticky surface that immediately bonds to tissue upon contact with body fluids, preventing migration before it can occur
Solution Approach 2:
A polysaccharide adhesive layer (such as chitosan or hyaluronic acid) is introduced as an intermediary substance between the matrix and tissue, enabling reliable adhesion in the presence of aqueous fluids without requiring mechanical fixation devices
2Reliability
If an adhesive material is applied to the matrix surface to prevent migration, then the matrix adheres to tissue, but the adhesive material must remain non-cytotoxic and biocompatible
Solution Approach 1:
The adhesive materials selected (polysaccharides like chitosan and hyaluronic acid) have specific chemical properties - they are naturally occurring, biocompatible, and non-cytotoxic, changing the parameter of material safety while maintaining adhesive functionality
Solution Approach 2:
The matrix system combines the structural component (resorbable matrix) with a functional adhesive component (polysaccharide layer), creating a composite material that provides both mechanical support and biological safety with adhesive properties
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 matrix effectively adheres to tissue surfaces, resisting migration and maintaining position during surgical irrigation, facilitating tissue regeneration and hemostasis without the need for secondary securing devices like sutures.
Implementation Method 1
a self-adhesive resorbable matrix with a polysaccharide adhesive layer, such as chitosan, applied to a biocompatible matrix sheet
Implementation Method 2
promoting fibrin clot formation
Data Source
AI summary
The present invention is directed to an adherent resorbable matrix for use in surgical applications. The adherent resorbable matrix includes a biocompatible adherent material including chitosan.