Clinical Trial

A Study of Choydar Flow-Directed Mesh Stent in the Treatment of Unruptured Intracranial Aneurysms

Study acronym: CROWN
Recruiting
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Summary
The purpose of this study is to assess how safe choydar flow-directed mesh stent is and how well it works in the treatment of unruptured intracranial aneurysms (a condition in which a bulging blood vessel in the brain can burst and cause bleeding) in a real-world setting.
Protocol Amendment History 4 changes
notable Trial sites expanded: 3 -> 8 locations 2026-07-07
critical Recruitment opened 2026-05-01
notable Primary completion moved earlier: 2028-04-11 -> 2028-02-10 2026-05-01
minor Completion moved earlier: 2028-10-31 -> 2028-02-10 2026-05-01
Trial Details
NCT Number NCT07228312
Lead Sponsor Johnson & Johnson Medical (Shanghai) Ltd.
Conditions Intracranial Aneurysm
Enrollment 200 participants
Start Date 2026-01-28
Primary Completion 2028-02-10 (estimated)
Study Completion 2028-02-10 (estimated)
Updated on ClinicalTrials.gov 2026-07-06