Clinical Research Directory

Inclusion Criteria: * Over 18 years old, regardless of gender; * Patients undergoing coronary intervention; * Patients with a transradial approach; * Voluntarily participate and sign informed consent; Exclusion Criteria: * Intraoperative Allen test was positive for all patients; * The intraoperative Barbeau tests were all D grade radial artery patients; * Patients with blood or liver diseases; * Patients with vascular diseases or malformations in the forearm; * Patients with a history of RAO at baseline of the radial artery on the approach; * Approach side arteriovenous fistula dialysis patients; * Patients with subclavian artery occlusive disease (definite medical history or the difference in systolic blood pressure between the two upper limbs is more than 20mmHg); * Patients who have completed coronary intervention (full heparin); * Active bleeding at the puncture site before extraction; * Systolic blood pressure greater than 180 mm Hg or diastolic blood pressure greater than 110 mm Hg at closure; * Pregnant women or patients who are trying to conceive and have family plans; * Patients whom the investigator deems inappropriate to participate in the clinical trial;