A Clinical Study on the Use of a Domestically Produced Cryoablation System Combined With Balloon Cryoablation Technology for the Treatment of Paroxysmal Atrial Fibrillation

Exclusion Criteria

• •1. Patients who have undergone atrial fibrillation ablation surgery
• •2. Reproductive-age patients who cannot use effective contraception within 12 months of enrolment
• •3. Left atrial size ≥50 mm, left ventricular ejection fraction ≤40%
• •4. Left atrial thrombus
• •5. Patients who have undergone atrial septal defect repair surgery or atrial myxoma
• •6. Patients with cerebrovascular disease within the past 3 months (including stroke or transient ischaemic attack)
• •7. Patients with cardiovascular events within the past 3 months (including acute myocardial infarction, coronary artery intervention or bypass surgery, artificial valve replacement or repair, or atrial or ventricular incision)
• •8. Patients with acute or severe systemic infection
• •9. Patients with severe liver or kidney disease
• •10. Patients with a significant tendency to bleed or haematological disorders
• •11. Patients with malignant tumours or end-stage diseases
• •12. Patients deemed ineligible for this trial by the investigator