Vascular Model Acoustic Impedance Layering
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Solution Overview
Problem
Existing vascular models fail to accurately visualize the three-layer structure of blood vessels in ultrasonic images, specifically the tunica intima, tunica media, and tunica externa, due to inadequate representation of acoustic impedance differences.
Innovation Solution
A vascular model comprising hollow tubular structures with varying acoustic impedances, where the first tube body has a higher impedance than the second and third tube bodies, mimicking the real human blood vessel structure by adjusting fine particle concentrations and types within polymer materials, allowing for distinct layer representation in ultrasonic images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a blood vessel model is created with layered structures, then the structural complexity is improved, but the acoustic impedance differentiation between layers deteriorates
Solution Approach 1:
The patent applies local quality by assigning different acoustic impedance characteristics to different layers of the blood vessel model. The tunica intima layer uses a first material with specific acoustic impedance, the tunica media layer uses a second material with different acoustic impedance, and the tunica externa layer uses a third material with yet another acoustic impedance. This local differentiation of material properties enables each layer to be visually distinguished in ultrasonic images while maintaining the overall layered structure.
Solution Approach 2:
The patent employs composite materials by combining multiple materials with different acoustic impedance properties within the blood vessel model. Each layer is constructed from a distinct material composition - the first material for tunica intima, second material for tunica media, and third material for tunica externa - creating a composite structure that mimics the acoustic characteristics of real blood vessels and enables clear layer visualization in ultrasonic imaging.
2Measurement precision
If the acoustic impedance of the first tube body is made higher than the second tube body, then the ultrasonic image luminance differentiation is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by systematically varying the acoustic impedance parameter across different layers. The first tube body (tunica intima) is assigned a higher acoustic impedance than the second tube body (tunica media), which in turn has higher acoustic impedance than the third tube body (tunica externa). This gradient of acoustic impedance parameters creates distinct luminance levels in ultrasonic images, making layer differentiation straightforward while following a systematic manufacturing approach.
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 vascular model effectively mimics the real human blood vessel structure in ultrasonic images, enabling clear visualization of the three-layer structure, enhancing the accuracy of medical procedures and simulations.
Implementation Method 1
the first tube body has an acoustic impedance higher than that of the second tube body
Data Source
AI summary
A vascular model includes a hollow tubular first tube body, and a hollow tubular second tube body that covers an inner peripheral surface of the first tube body. The first tube body has an acoustic impedance higher than an acoustic impedance of the second tube body.