Vascular Closure Set is used for wound hemostasis after interventional surgery via femoral artery puncture. Mechanism of action is, through the extensional hemostasis umbrella to plug puncture site, using the principle of elastic recoil of arterial vascular smooth muscle to make the arterial puncture site shrink to pinhole size, using the principle of arterial anatomy of local compression, apply appropriate internal compression in the arterial cavity. The artery has natural relaxation, and would promote the start of coagulation function in arterial cavity. When pulling the Vascular Closure Set out of the arterial puncture site, achieve the purpose of hemostasis.