Efficacy and Safety of Sirolimus-coated Coronary Balloon Dilatation Catheter for Coronary Small Vessels

Inclusion criteria

• ✓. Age ≥18 years old, gender is not limited
• ✓. Diagnosed with stable or unstable angina, old myocardial infarction, or asymptomatic myocardial ischemia
• ✓. Suitable for balloon angioplasty
• ✓. Be able to understand the purpose of the trial, be willing to cooperate in the follow-up, and voluntarily sign an informed consent form.
• ✓. Primary coronary small vessel lesions with a visual lesion length of ≤36mm and a visual lesion diameter of ≥2.00mm and ≤2.75mm
• ✓. Target lesions with ≥70% or ≥50% diameter stenosis with evidence of ischemia before interventional therapy
• ✓. Residual stenosis of ≤30% visualized after pre-interventional dilatation of the target lesion without type C or higher entrapment
• ✓. In the presence of multiple lesions requiring treatment, one of the lesions that meets the requirements should be selected as the target lesion, and the non-target lesion should be in a different vascular branch from the target lesion.