Background
Two women (46 and 67) were diagnosed with cerebral aneurysms in parent arteries measuring only 1.6 mm and 1.7 mm—too small for any flow-diverting stent then available in mainland China.
Procedure
Under the Hong Kong-Macao Drug and Device Connect policy, Dr. Liang Feng’s team at Sun Yat-sen University introduced the world’s first 0.017-inch microcatheter-compatible flow-diverting stent. In May 2023, both patients underwent minimally invasive stent deployment to restore blood flow.
Outcome
Postoperative angiography showed markedly reduced aneurysmal flow with patent parent and distal vessels. Both patients remained stable, symptom-free, and were discharged the next day.








