The PCI procedure is a percutaneous coronary intervention, usually performed by puncturing the artery, either the radial artery or the femoral artery, depending on the patient’s specific arterial pulsation conditions. After the puncture is completed, a sheath is inserted to prevent blood leakage. After the sheath is inserted into the artery, a catheter is easily placed through the sheath to the coronary artery, and the corresponding examination and treatment, including stenting, is performed in the coronary artery. After the intervention is done, the catheter and sheath, including the auxiliary catheter, need to be pulled out and cannot be left in the body, only the stent remains in the body. In the case of the femoral artery, the puncture port is usually bandaged with sutures or compression, while the radial artery puncture port is compressed with a compression device to stop the bleeding. So for patients, PCI is a very minimally invasive procedure that does not require general anesthesia or incisions, and the recovery is very quick, and basically some patients can walk on the floor afterwards.