3D Shaped Article Sea-Island Structure for Surgical Simulation
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Solution Overview
Problem
Existing three-dimensional shaped articles produced for surgical simulations are difficult to cut with electric knives due to high volume resistivity and hardness, making them unsuitable for realistic surgical practice.
Innovation Solution
A three-dimensional shaped article with a sea-island structure composed of a hydrophobic resin and a hydrophilic resin, where the area ratio of the hydrophilic resin is between 20% to 50% by area, allowing physiological saline to penetrate and reduce volume resistivity, enabling easier cutting with an electric knife.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a three-dimensional shaped article is produced using conventional single-resin ink composition, then the structural integrity and hardness are improved, but the volume resistivity becomes too high and cuttability with electric knife deteriorates
Solution Approach 1:
The patent uses a composite ink composition containing both hydrophobic resin (providing structural integrity and hardness) and hydrophilic resin (providing low volume resistivity and cuttability). This composite approach allows the shaped article to simultaneously achieve both hardness for structural stability and low volume resistivity for realistic cutting simulation with electric knives.
Solution Approach 2:
The patent creates regions with different resin compositions within the shaped article. The hydrophilic resin components create localized areas with low volume resistivity that facilitate cutting, while the hydrophobic resin maintains overall structural integrity. This local differentiation of material properties resolves the contradiction between hardness and cuttability.
2Object-generated harmful factors
If the area ratio of hydrophilic resin is increased to improve cuttability, then the volume resistivity decreases and cuttability improves, but the structural integrity may deteriorate
Solution Approach 1:
The patent optimizes the area ratio of hydrophilic resin to be between 20-50% of the total resin area. This parameter optimization ensures that there is enough hydrophilic resin to provide low volume resistivity and good cuttability, while maintaining sufficient hydrophobic resin to preserve structural integrity. The specific range balances both requirements effectively.
3Ease of manufacture
If a single-resin system is used, then the manufacturing process is simple, but the ability to simulate realistic organ properties deteriorates
Solution Approach 1:
The patent creates a multi-functional ink composition where hydrophobic resin provides structural support and shape maintenance, while hydrophilic resin provides tissue-like electrical properties for cutting simulation. This multi-functionality allows a single ink composition to simulate both the mechanical and electrical properties of human organs, enhancing realism without requiring multiple separate manufacturing processes.
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 article achieves a volume resistivity closer to that of human organs, allowing for realistic cutting simulations with an electric knife, enhancing the softness and cuttability of the shaped article.
Implementation Method 1
A three-dimensional shaped article with a sea-island structure including a cured object of a first shaping ink, which contains a hydrophobic resin, and a cured object of a second shaping ink, which contains a hydrophilic resin
Implementation Method 2
a three-dimensional shaping ink composition is arranged according to the cross-sectional shape data of a three-dimensional shape by using an inkjet method, and a three-dimensional shaped article is produced by repeating curing with ultraviolet light
Data Source
AI summary
A three-dimensional shaped article has a sea-island structure including a cured object of a first shaping ink, which contains a hydrophobic resin, and a cured object of a second shaping ink, which contains a hydrophilic resin.