The Cardioembolic Stroke Closure Devices segmentation by application reflects three clinically distinct use‑cases that together drive the market’s revenue composition. The dominant segment, Left Atrial Appendage (LAA) closure, targets patients with non‑valvular atrial fibrillation who are unsuitable for long‑term oral anticoagulation; it accounts for roughly 55 % of total sales because of the high prevalence of AF and the growing preference for mechanical exclusion of the LAA. The second tier, Patent Foramen Ovale (PFO) closure, is employed in cryptogenic‑stroke patients with a confirmed inter‑atrial shunt and contributes about 35 % of market volume, reflecting expanding guideline endorsement and increased procedural adoption. The remaining 10 % comprises other congenital defect closures such as atrial septal defect and secundum defect interventions, which, while smaller in absolute terms, provide a niche revenue stream and support diversification of the product portfolio. Collectively, these application categories determine the allocation of R&D investment, pricing strategies, and geographic penetration across the cardioembolic stroke closure landscape.