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Coronary artery stenosis model and its producing method

A technology for coronary stenosis and coronary arteries, which is applied in the field of coronary stenosis models and their production, can solve problems such as application limitations, high data accuracy requirements, and small blood vessel evaluation limitations, and achieve the effect of simple production process and requirements

Inactive Publication Date: 2005-03-02
吕滨
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the computer-aided model making equipment is extremely expensive, the manufacturing process is cumbersome, and the data requires high precision. Therefore, the production of coronary artery models cannot be scaled, and the application is limited.
Secondly, the resin model material is hard plastic, which is very different from the density of human heart tissue, so it cannot reflect the characteristics of real human tissue
Third, the resin material cannot be made into a coronary artery model with a diameter of <1.0mm (the production accuracy is not enough), and the evaluation of small blood vessels is limited

Method used

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Embodiment Construction

[0025] (1) 28 fresh pig hearts purchased from the farmer's market were used. No damage was observed with the naked eye and the blood vessel branches were complete. The size of the heart was similar to that of a human body, and the weight was 350-540 grams, with an average of 461±50 grams. The structure and shape of the left coronary artery (LAD) and right coronary artery (RCA) of the pig heart are very close to those of the human body.

[0026] (2) First complete the "water injection test" in the laboratory, that is, inject physiological saline into the LAD and RCA of the pig heart respectively, clean the old thrombus, and confirm that the LAD and RCA are not damaged and the branches are complete. Practical application LAD26, RCA22.

[0027] (3) Prolene sutures (prolene suture, made of polypropylene textile fibers) No. 5 to 7 in cardiovascular surgery were used in the proximal, middle and distal sections of the anterior descending coronary artery and the right coronary artery ...

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Abstract

The invention discloses a coronary artery narrow model and making method. Its uses surgery suture method or ligation coronary artery method to make models with serial for left and right coronary artery on any positions. It can be used in coronary artery imaging, coronary artery narrow, coronary artery tissue research, particularly for the research in medical imaging science.

Description

【Technical field】 [0001] The invention relates to a coronary artery stenosis model and a manufacturing method thereof. 【Background technique】 [0002] New medical imaging methods for coronary artery imaging, such as spiral CT, magnetic resonance, and electron beam CT, must verify the accuracy of their clinical applications before they are applied clinically, and such research cannot be performed on humans, and must first It can be used clinically only after the animal or model research is completed. [0003] Foreign experts Renandin and Davros respectively reported the production methods of the coronary artery model and the renal artery model. They all used plastic-like liquid resin (liquid resin) materials and were produced by computer-aided design and computer-aided manufacturing techniques. [0004] The resin phantom can be used to study the accuracy and error of computed tomography (CT) scanner equipment or magnetic resonance scanner (MRI) in imaging blood vessels. How...

Claims

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Application Information

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IPC IPC(8): G09B23/28
Inventor 吕滨孙晓刚戴汝平庄囡
Owner 吕滨
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