I. Overview Aneurysm is an aneurysm that is connected to an artery and filled with arterial blood, and is divided into true aneurysm, intercalated aneurysm and pseudoaneurysm. Pseudoaneurysms, which were described in the previous chapter, are aneurysms in which the artery ruptures and forms an aneurysmal cavity encapsulated by the surrounding tissue, and the wall of the aneurysm does not have the normal structure of the arterial blood vessel wall. A true aneurysm is a localized dilatation of the arterial vessel with an intact arterial wall structure. In contrast, a coarctation aneurysm is a longitudinal tearing of the arterial vessel wall by blood flow, resulting in the formation of two lumens, one real and one false. Most of them occur in large vessels, with the thoracic aorta as the preferred site. The endothelial rupture is mostly at the beginning of the ascending aorta and the descending aortic arch. Patients mainly show sudden severe pain in the chest and back, hypertension, and manifestations of multi-organ ischemia, such as ischemic manifestations in the kidneys, intestines, and limbs, and these patients mostly have a history of atherosclerosis and trauma triggers. Second, diagnosis According to the clinical manifestations of patients combined with ultrasound, CTA and MRA, it is not difficult to diagnose. The key is that timely treatment must be given after diagnosis, otherwise sudden death due to hemorrhage may occur, because it is difficult to resuscitate a large artery rupture. Therefore, once diagnosed with a clogged aneurysm, it must be treated in a large hospital. Small hospitals are not equipped to treat this kind of disease and must not be delayed, otherwise it will be regrettable for life. The most fundamental traditional treatment for this kind of disease is surgery. Treatment such as vascular repair and reconstruction through surgery can fundamentally solve the danger of patients. However, surgery requires incision, which is very traumatic and risky. 2. Interventional treatment With the development of modern interventional technology, great progress has been made in the treatment of coarctation aneurysm. Interventional technology does not require an incision, but a small incision of 2mm in size is cut at the root of the thigh, and a stent with membrane can be inserted into the arterial opening to seal the opening of the coarctation aneurysm very easily. After blocking, symptomatic treatment is given to solve the ischemic problems of other organs and limbs. In conclusion, interventional techniques, which are minimally invasive, safe, effective and quick, can quickly relieve patients of symptoms and life-threatening conditions and disarm this bomb, which is known as an untimely bomb.