Evaluate Safety and Efficacy of Pronavi Microcatheter for Use in Endovascular Interventions

Inclusion Criteria: 1. Age ≥ 18 years old; 2. Patients with symptomatic ischemic heart disease who are suitable for non-acute percutaneous coronary intervention (PCI); 3. Patients with target lesion diameter stenosis ≥ 70% (visually) or de novo coronary chronic total occlusion (CTO), or tortuous lesions, who plan to use Pronavi Microcatheter; 4. Patients or their guardians who understand the purpose of the trial, voluntarily participate and sign the written informed consent, and are able to be followed up. Exclusion Criteria: 1. Patients with clinical symptoms consistent with ST-elevation myocardial infarction and/or ECG changes within 12 hours before the procedure; 2. Patients who are known to be intolerant to antiplatelet drugs or allergic to contrast media; 3. Patients with in-stent occlusion; 4. Patients with unprotected left main coronary artery disease; 5. Women who are pregnant or lactating; 6. Patients who are participating in clinical trials of other drugs or medical devices; 7. Patients with contraindications to the investigational device; 8. Other patients considered by the investigators to be unsuitable for this trial.