The primary objective of the study is to assess the safety and effectiveness of SPG stimulation with the ISS in a 24 hour window, in patients with an acute ischemic stroke in the anterior circulation, who received Mechanical Thrombectomy and/or IV-rtPA and Standard of Care.
This will be a multi-center, multinational, randomized, double blind, sham control, adjunctive to Standard of Care, parallel arm study and will include ongoing DSMB review of accumulated safety data.
The study has three phases:
Phase I - Implantation Safety Assessment
- Number of patients: 20 (at least 10 implantations)
- Implanters: only certified implanters who already performed implantation of ISS in previous studies
- Continue to the next phase if there are no serious procedure complications related to IV-rtPA (as determined by the implanter). Otherwise, implement retirements and continue only after DSMB approval.
DSMB meetings: after 10 implantations
Phase II - Symptomatic Intracranial Hemorrhage Assessment (sICH):
- Number of patients: 50 (additional 30)
- Implanters: all certified implanters
- Verify no clinically meaningful difference between treated and control. A clinically meaningful difference is a difference of more than 3 sICH cases within the first 5 days of treatment, in the treated arm compared to the control arm.
In case of clinically meaningful difference, implement retirements.
- Continue to phase III after DSMB approval.
- DSMB meetings: after 30 and 50 patients
Phase III - Entire study population, DSMB meetings at 100 and 150 patients
- The Ischemic Stroke System Device
Intervention Desc: SPG stimulation and standard of care ARM 1: Kind: Experimental Label: Active Stimulation
- Sham control Device
Intervention Desc: Sham stimulation and standard of care ARM 1: Kind: Experimental Label: Sham Stimulation
- Allocation: Randomized
- Masking: Double Blind (Subject, Outcomes Assessor)
- Purpose: Treatment
- Endpoint: Safety/Efficacy Study
- Intervention: Parallel Assignment
|Type||Measure||Time Frame||Safety Issue|
|Primary||Distribution of patients across the ordinal modified Rankin scale (mRS)||90 days||No|
|Secondary||Distribution of patients with NIHSS best language score ≥ 2 at screening across the ordinal modified Rankin scale (mRS)||90 days||No|
- BrainsGate Lead