Polycondensate Composition for 5-ALA Fluorescent Brain Tissue Models
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Solution Overview
Problem
Existing surgical training methods fail to provide a realistic simulation of both the fluorescence and the pathological anatomical portion of interest.
Innovation Solution
A polycondensate comprising melamine resin, toluene sulfonamide, and a synthetic dye is used to create a mixture for simulating soft brain tissue with 5-ALA fluorescence, which can be used to simulate the fluorescence in the field of surgical procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If animal models or cadaver preparations are used for surgical training, then the training realism is improved, but the cost and sustainability deteriorate
Solution Approach 1:
The patent creates a synthetic polycondensate model that copies the essential visual and fluorescent properties of real brain tissue and tumors, eliminating the need for expensive animal models or cadavers while maintaining training realism
Solution Approach 2:
The invention modifies the chemical composition parameters of the model material to match the optical and fluorescent characteristics of actual tissue, enabling realistic simulation without biological constraints
2Device complexity
If existing training models are used, then the device complexity is reduced, but the simulation accuracy of fluorescence and anatomical portions deteriorates
Solution Approach 1:
The patent employs a composite polycondensate formulation combining multiple chemical components (melamine resin, toluene sulfonamide, synthetic dye) to simultaneously achieve realistic anatomical appearance and accurate fluorescence simulation in a single material system
Solution Approach 2:
The invention uses synthetic dyes with specific absorption and emission characteristics that replicate the fluorescence behavior of 5-ALA in real tumors, enabling accurate visual simulation across different lighting conditions
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 polycondensate mixture provides a realistic simulation of soft brain tissue with 5-ALA fluorescence, allowing for effective surgical training by simulating the visual and tactile properties of healthy and pathological tissues, enhancing the training of surgeons in fluorescence-guided resections.
Implementation Method 1
the synthetic dye is suitable for emitting a fluorescence observed in the field 620-710 nm, when exposed to visible light with UV in the range of 375-440 nm
Implementation Method 2
the synthetic dye is selectively absorbed by glioma, metabolized into a protoporphyrin, which, when exposed to light in the ultraviolet-visible spectral region, emits fluorescent light
Data Source
AI summary
A polycondensate in particulate form for making a model for simulating soft tissue using 5-ALA fluorescence includes melamine resin, toluene sulfonamide and a synthetic dye. The polycondensate is suitable for emitting a fluorescence in a field of 620-710 nm, when exposed to visible light with UV in a range of 375-440 nm. A mixture for making a model for simulating a soft brain tissue using 5-ALA fluorescence, includes silicone and the polycondensate in particulate form. A mixture for making a model for simulating a soft brain tissue using 5-ALA fluorescence includes the polycondensate, water, gelatin, glycerin, and sorbitol. A content by weight of glycerin and sorbitol is predominant with respect to a content by weight of gelatin. A model for simulating a soft brain tissue using 5-ALA fluorescence includes the mixture.