How is coronary artery stenosis graded?

Model: Coronary Artery Intervention I(XXD001)

Coronary heart disease mainly refers to atherosclerotic stenosis of the coronary arteries. Clinically, it is divided into several grades according to the degree of stenosis.

The degree of coronary artery stenosis does not exceed 50% of the lumen, which is called mild stenosis. If the degree of stenosis is 50%-70% of the lumen, it is called moderate stenosis. Severe stenosis is defined as stenosis exceeding 70% of the lumen.

Clinically, under normal circumstances, if the stenosis is mild to moderate and the patient has no ischemic symptoms, interventional intervention is generally not required, and only drug treatment is sufficient.

If the degree of stenosis exceeds 75% of the lumen and the patient has an angina pectoris attack, interventional treatment is required, such as intracoronary stent implantation or coronary artery bypass surgery.

The coronary intervention model extends from the radial artery and femoral artery to the coronary artery branches, including simple radial artery, aortic arch, left and right coronary arteries, diagonal branches, left anterior descending artery, circumflex artery, abdominal aorta, femoral artery and other major arteries, as well as left and right coronary arteries. The veins are fixed to the transparent hard heart, which gives the coronary arteries a realistic spatial shape. Replaceable small vessel segments with common coronary artery lesions can be customized on different branches of the coronary arteries.

Common lesions include stenosis, bifurcation, calcification and CTO . Regarding stenotic lesions, we optimally recommend customizing stenotic lesions of varying degrees in the left anterior descending artery, left circumflex artery, and middle segment of the right coronary artery.

This model is mainly used for doctor teaching and training, testing, training and demonstration of coronary interventional equipment. It is also suitable for the development, testing and verification of various coronary equipment, mainly including catheters, guidewires, microcatheters, microguidewires and stents. , balloon, etc.