MicroPort NeuroScientific Corp.

The trial is a prospective, multicenter, open-label, superiority, randomized controlled clinical trial. The experimental groups include two types of drug-eluting stents:
* Experimental Device A, a self-expanding rapamycin target-eluting stent (MicroPort NeuroTech, Shanghai, China)
* Experimental Device B, a balloon-expandable rapamycin target-eluting stent (MicroPort NeuroTech, Shanghai, China) The device used in the control group is the Apollo® Intracranial Artery Stent System, a balloon-expandable bare-metal stent (MicroPort NeuroTech, Shanghai, China), According to the inclusion and exclusion criteria specified in the protocol, approximately 249 subjects with symptomatic cerebral artery atherosclerotic stenosis will be enrolled in China and randomized to Experimental Group A, Experimental Group B, or the control group.
Considering the broader applicability of Experimental Device A and Experimental Device B compared to the control device, a specification subgroup is established. 20 subjects with lesions only suitable for the unique specifications of Experimental Device A or Experimental Device B will be enrolled in China. These subjects will not undergo randomization, and their data will be analyzed separately without hypothesis testing.
Moreover, a subgroup of Experimental Device B is established at a study center in Brazil. 10 subjects meeting the trial's inclusion and criteria will be enrolled. These subjects will not undergo randomization, and their data will be analyzed separately without hypothesis testing, only to support overseas registration.
Overall, the total sample size for the study is 279 subjects. Clinical assessment will be conducted for all subjects before the procedure, during the procedure, at discharge, at 1 month (±7 days) follow-up, at 6 months (±30 days) follow-up, and at 12 months (±60 days) follow-up. At 12 months (±60 days), patients will undergo follow-up with DSA imaging. Unscheduled follow-ups may be performed as needed to record relevant indicators and evaluate the safety and efficacy of the two drug-eluting stents in the treatment of symptomatic cerebral artery atherosclerotic stenosis.

This clinical trial is a prospective, open-label, single-arm clinical trial. According to the inclusion and exclusion criteria specified in the trial protocol, no fewer than 16 subjects with cerebral hemorrhage will be enrolled in 1 to 2 clinical centers. Considering the learning period required for doctor to become proficient in using the device, the first three cases at each research center are considered as the lead-in period cases and will not be included in the primary analysis dataset. During the surgery, a disposable intracerebral aspiration endoscope will be used to remove the intracerebral hematoma. Follow-ups will be conducted at discharge/Day 7 (±1 day), postoperative 1 month (±7 days), and postoperative 3 months (±15 days). Recording various indicators to evaluate the safety and effectiveness of the disposable intracerebral aspiration endoscope in treating intracerebral hematoma.

The purpose of the trail is to determine whether DCB is superior to conventional balloon in treating cerebral atherosclerotic stenosis