临床与实验心脏病学
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The Occluder Device for Transcatheter Patent Foramen Ovale (PFO) Closure with Reserved Interatrial Septal Puncture Area

Haibin Jiang*

Patent Foramen Ovale (PFO) is a congenital heart defect characterized by a small opening between the right and left atria, which persists after birth. This condition is often asymptomatic but has been associated with paradoxical embolism, cryptogenic stroke and migraines. Transcatheter PFO closure is a minimally invasive treatment that involves placing an occluder device to seal the defect. However, traditional occluder devices can hinder future interventions requiring access through the interatrial septum, such as atrial fibrillation ablation or left atrial appendage occlusion. This challenge has led to the development of occluder devices with a reserved interatrial septal puncture area, facilitating safe and effective transseptal puncture in the event of future procedures. This article focuses on the design and clinical outcomes of an innovative occluder device for PFO closure that integrates a designated puncture zone. The device is engineered to provide a robust seal of the PFO while maintaining a structurally safe and accessible area in the interatrial septum for potential transseptal access. The reserved puncture area is marked with radiopaque materials for easy localization during imaging-guided interventions. This design preserves the functional integrity of the interatrial septum, ensuring that future procedures requiring septal access are not compromised.