Once the heart stent is successfully implanted, it is usually impossible to remove it. After pressure expansion, the stent closely adheres to the coronary artery and becomes a part of the blood vessel wall. In the process of continuous formation, the internal capsule surrounds the stent, and finally the blood vessels and the stent are closely attached. After stent implantation, it is usually impossible to take out the stent, because the stent and blood vessels have become inseparable parts. Therefore, if restenosis occurs after stent implantation, residual lesions or new lesions can be improved by drug treatment, balloon dilatation, and membrane hanging.

Coronary angiography should be performed in patients with myocardial infarction if the coronary artery is severely narrowed or even occluded. If lipiodol angiography determines the lesion site and its invasion range, minimally invasive cardiovascular surgery is needed. Minimally invasive surgical intervention includes balloon dilatation and stent implantation. The actual operation step of stent implantation is to expand the balloon in advance according to the narrow lesion, and then implant the stent in the place where the capillary is to be expanded for expansion after the lesion is completely solved.

Whether the coronary stent will be blocked again after implantation is indeed a problem that patients and doctors are very concerned about. To tell the truth, it may be banned, but the possibility is not high, including the following two probabilities.

The first situation is stent thrombosis: coronary stent is a dirty thing to the body, and the dirty thing is likely to wake up the coagulation function of the body at night, which will lead to venous thrombosis. This is why after stent implantation, we usually choose aspirin plus another antithrombotic drug, such as ticlopirox or clopidogrel. Even after that, there is still a small chance of thrombosis, usually in the early stage of stent implantation.

In the second case, coronary artery stenosis: the treatment of coronary stent implantation does not actually deal with the cause of myocardial infarction, so it is very likely that coronary artery will become diseased again after stent implantation, such as the overgrowth of smooth muscle cells and the transformation of atherosclerotic plaque, which will promote coronary artery stenosis again. This situation usually occurs in the middle and late stage of stent implantation.

Coronary stent is a powerful method to treat severe myocardial infarction, and it is not necessary to take it out after stent implantation. For the implanted coronary stents, what we should do is to minimize coronary re-occlusion, such as thrombosis and restenosis. We can choose suitable stents, strengthen antiplatelet therapy, control blood pressure, blood sugar, blood sugar, quit smoking and lose weight. If we have done everything we can, the coronary artery is still blocked, don't worry too much. If we can defeat the enemy in one fell swoop, we still have some corresponding remedial measures, such as balloon dilatation, stent implantation again, coronary artery bypass grafting and so on.