This study is a post-marketing clinical study of the Lattice Flow-Diverting Dense-Mesh Stent. It plans to enroll 280 patients, who will be treated for unruptured intracranial aneurysms using the Lattice Flow-Diverting Dense-Mesh Stent. Patients will be followed up at 12 months after device implantation, and data including the Raymond classification of the target aneurysms, the occurrence of complications, and whether complications result in neurological deficit symptoms will be collected and assessed. Through the above indicators, the clinical safety and efficacy of the product will be evaluated.

Inclusion Criteria:Inclusion Criteria Aged 18 years or older; Patients diagnosed with unruptured intracranial aneurysms via CTA (Computed Tomographic Angiography), MRA (Magnetic Resonance Angiography), or DSA (Digital Subtraction Angiography); Patients treated with the Lattice Flow-Diverting Dense-Mesh Stent; Patients with 12-month follow-up records after treatment with the Lattice Flow-Diverting Dense-Mesh Stent; Patients whose aneurysms and parent arteries meet the indications for the Lattice Flow-Diverting Dense-Mesh Stent.

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Exclusion Criteria:Patients with severe respiratory, circulatory, hepatic, renal diseases, or coagulation disorders; Patients whose target aneurysms are pseudoaneurysms, or aneurysms associated with arteriovenous malformations (AVMs) or Moyamoya disease; Patients with intracranial space-occupying lesions (such as intracranial tumors, abscesses, etc.), or those undergoing radiotherapy to the head; Patients currently participating in clinical trials of other drugs or medical devices; Patients with incomplete follow-up information 12 months after treatment with the Lattice Flow-Diverting Dense-Mesh Stent; Patients who express explicit disagreement (verbally or in writing) with participating in this study; Patients with parent artery stenosis greater than 50% that requires balloon angioplasty.

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Patients diagnosed with unruptured intracranial aneurysms via CTA , MRA , or DSA