Surgical Training Model with Layered Elastane Fascia
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Solution Overview
Problem
Current surgical skills training models lack realism, failing to accurately mimic human tissue structures, which hinders effective training for medical procedures such as suturing, injections, and wound management.
Innovation Solution
A surgical skills training model comprising multiple tissue layers (muscle, fascia, subcutaneous, and skin) made from specific silicone materials and elastane fabrics, replicating the texture, density, and stretch properties of human skin, including simulated blood vessels, to provide a more authentic training experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional simulation models are used, then the training process can be simplified, but the realism and authenticity of the training experience deteriorates
Solution Approach 1:
The training model is divided into multiple distinct tissue layers (epidermis, dermis, subcutaneous fat, muscle) with different material properties. Each layer is segmented to replicate the specific characteristics of human tissue, allowing trainees to practice procedures that require interaction with multiple tissue depths while maintaining overall model simplicity.
Solution Approach 2:
The model uses composite materials combining silicone rubber for structural integrity and elastane fabric for stretch properties. This composite construction allows the model to simultaneously provide realistic tissue simulation for procedural practice while maintaining durability and ease of repeated use.
2Reliability
If multiple tissue layers are incorporated, then the realism of the model improves, but the device complexity increases
Solution Approach 1:
The model is segmented into four distinct tissue layers, each with specific material properties matching human anatomy. This segmentation enables accurate simulation of tissue interactions for procedures like suturing and injections while keeping each individual layer relatively simple in construction.
Solution Approach 2:
Different material parameters are assigned to different tissue layers - silicone rubber provides structural stability for deeper tissues while elastane fabric provides stretch properties for superficial layers. This parameter differentiation achieves realistic tissue simulation without requiring complex construction for each layer.
3Adaptability or versatility
If elastane fabric is used for tissue layers, then the stretch properties are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The elastane fabric is constructed with elastic fibers oriented in specific directions to provide stretch properties matching human tissue. By controlling the fiber orientation parameter during manufacturing, the model achieves accurate stretch behavior for procedures like skin incisions and flaps without requiring extremely tight tolerances on all dimensions.
Solution Approach 2:
Different regions of the model have different fabric orientations and elastic properties matched to the specific tissue being simulated. For example, skin layers have fabric oriented to provide stretch in directions matching natural skin elasticity patterns, allowing localized precision rather than uniform high precision throughout the entire model.
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 model offers a highly realistic simulation of human tissue, enhancing the training experience for medical procedures by providing a safe, durable, and versatile tool that closely mimics real tissue, allowing for repeated practice without deterioration.
Implementation Method 1
the fascia layer is made from a two-way elastane material or a four-way elastane material
Data Source
AI summary
A surgical skills training model has an elongated body including muscle, fascia, subcutaneous tissue, connective tissue and skin mimicking layers. The fascia and connective tissue layer are made from a material having a stretch direction that is aligned with a longitudinal axis of the muscle layer and the body of the model.