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A phantom model with a tree-like pipeline structure

A model and phantom technology, applied in the medical and health field, can solve the problems of filling the blood vessel model, affecting the ultrasonic penetration, affecting the quality of the sonographic image of the pipeline, etc., and achieving the effect of ensuring quality, wide application range and good sound permeability.

Active Publication Date: 2019-10-08
THE THIRD AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of imitating human blood vessels, since the sonogram in the human blood vessels is anechoic, an anechoic solid material can be used to embed in the surrounding tissue glue. However, the blood vessel model at this time is actually solid. It is inconsistent with the actual situation of the human body, and it is difficult to fill specific substances in the blood vessel model for research when necessary
Another way is to embed the hollow pipe in the surrounding tissue glue. At this time, there is a layer of pipe wall between the hollow pipe inside the simulated blood vessel and the surrounding tissue glue, although this model is closer to the actual situation (there are also blood vessels in the human body. wall), however, the inventor found that the pipe wall simulated by the materials currently used will affect the ultrasound penetration and affect the quality of the sonogram in the pipe

Method used

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  • A phantom model with a tree-like pipeline structure
  • A phantom model with a tree-like pipeline structure
  • A phantom model with a tree-like pipeline structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Prepare a tree structure mold. Use silicone tubes of different thicknesses to connect them into a tree structure. The diameters of the silicone tubes are 4, 6, 10, and 15 mm. Connect to two silicone tubes with a diameter of 10mm to form a tree-shaped mold with secondary branches, and make two sets of tree-shaped molds in this way ( figure 2 ).

[0056] (2) Preparation of tumor models. Mix and stir agarose powder, stomach window powder and 0.9% normal temperature saline according to the mass ratio of 2:3:100, stir evenly, heat to 70-90 degrees, pour into the casting mold and cool to form.

[0057] (3) Prepare the water bag, which is made by filling the rubber sleeve with water and then sealing it (note that the air in the container is exhausted).

[0058] (4) Prepare Matrigel. Mix agarose powder, gastric window powder and 0.9% normal temperature saline according to the mass ratio of 4:1:200, stir well, heat to 70-90 degrees, and then maintain the temperature at ...

Embodiment 2

[0064] Same as Example 1, but when preparing Matrigel, agar powder, stomach window powder and 0.9% normal temperature saline were mixed and stirred according to the mass ratio of 4:1:140.

[0065] Detection of the phantom model: the phantom model contains tree-shaped hollow pipes with smooth surfaces and clear boundaries. At 25°C, the ultrasonic propagation velocity of the model under standard atmospheric pressure is 1514m / s, which is very close to the average ultrasonic propagation velocity of human soft tissue. The property is stable, the phantom model remains intact in the water bath environment (time point 24H and 6 months), the diameter of each section of the pipe is uniform, the edge is sharp, the surface is smooth, the shape of the pipe and the echo characteristics of the internal structures do not change significantly, and the tree-like space Ultrasound of lumen and duct structure showed tree-like anechoic, and good continuity ( image 3 , 4 ).

Embodiment 3

[0067] Same as Example 1, but when preparing Matrigel, adjust the mass ratio of agarose to saline, and compare the results.

[0068]

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Abstract

The invention belongs to the field of medical care and health, and relates to a phantom model, particularly to a phantom model containing a tree-shaped pipeline structure. The phantom model provided by the invention includes a peripheral tissue colloid model and a hollow pipeline model, the hollow pipeline model is a pipeline directly formed inside the peripheral tissue colloid model, and no partition membrane or partition wall exists between the hollow pipeline model and peripheral tissue glue. The model has the advantage of good sound transmission performance, effectively guarantees the quality of a sonogram echogram, and can effectively simulate important pipeline structures in a human body (such as liver), thereby obtaining better simulation, and enabling the range of application of the model to be wider, and the phantom model can be used as a sign structure in melting technology planning, and can also be used for training of a cavity radiographic technology.

Description

technical field [0001] The invention belongs to the medical and health field, and relates to a phantom model, in particular to a phantom model for simulating the tree structure of human blood vessels. Background technique [0002] The imitation tissue model is a key and commonly used tool in the learning and training of interventional ultrasound technology. However, the phantom model and its realization technology for imitating the human vascular tree structure are still very limited. In terms of imitating the surrounding tissues of human blood vessels, because the propagation speed of ultrasound in carrageenan colloid is closer to the real situation of the human body, carrageenan is often used as a model material. In terms of imitating human blood vessels, since the sonogram in the human blood vessels is anechoic, an anechoic solid material can be used to embed in the surrounding tissue glue. However, the blood vessel model at this time is actually solid. It is inconsiste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/28
Inventor 贺需旗李凯郑荣琴李柳军
Owner THE THIRD AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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