(Percutaneous transluminalangioplasty, PTA) is the dilation and recanalization of vascular stenosis or occlusive lesions caused by atherosclerosis or other causes through catheters and other devices. This therapy began to be used in the 1960s. Before the 1980s, balloon catheters were mainly used for treatment, also called balloon angioplasty. In the 1980s, several new angioplasty technologies emerged, mainly laser angioplasty. Atherectomy, endovascular stent, etc.
PTA was originally mainly used for limb blood vessels, and later expanded to internal arteries, such as renal arteries and coronary arteries, and developed from arteries to veins, such as dilation to treat vena cava stenosis, and even treatment of artificial blood vessels and transplanted blood vessels. Stenosis or occlusion.