StrokeGuard headset worn by a patient with a handheld monitor showing cerebral oxygenation readings

Pressing pause
on stroke.

NeuraStasis is developing StrokeGuard: a smart, wearable therapeutic designed to augment blood flow to the brain in transit, so that more patients reach life-altering stroke treatment.

Supported By
Berkeley SkyDeck MedTech Innovator Blueprint MedTech TMCi Biodesign

Logistics cannot beat biology.

In stroke, Time is Brain. Current treatments depend on reaching a capable hospital before irreversible damage sets in, and for many patients, that gap is devastating.

1.9M
Neurons lost per minute

The ischemic core rapidly consumes surrounding salvageable penumbra, causing irreversible brain damage.

1–3 hrs
Transport delay

Reaching a capable facility adds hours of untreated time. No neuroprotective intervention exists during transit.

< 50%
Global access gap

Less than half the global population has immediate access to definitive stroke treatment during the most critical window.

Functional Independence (%)Minutes from stroke onset to reperfusion100%60%30%0%060120180240300360ONSETTRANSPORT DELAYS
Stroke patient Cerebral angiogram showing stroke Emergency medical team treating patient

The global economic burden of stroke exceeds $890 billion annually, with over $111 billion in the US alone. The lifetime cost per stroke patient averages over $140,000, yet no approved device exists to protect the brain during the pre-hospital window.

A first-of-its-kind emergency neuroprotection device.

A non-invasive therapy that augments blood flow to the brain before reperfusion treatment, and is designed to travel with patients through the critical transfer window.

StrokeGuard device showing electrode contact and sensor module

How It Works

StrokeGuard uses non-invasive electrical stimulation of the trigeminal nerve to trigger the body's own cerebrovascular reflexes, promoting increased collateral blood flow to at-risk brain tissue to give patients and providers more time to act.

Clinical Profile

StrokeGuard is designed to increase cerebral blood flow by lowering cerebrovascular resistance, without systemic hypotension or pharmaceutical blood thinners. It is intended to act before and bridge to definitive treatment such as thrombolysis or thrombectomy, and to be safe for use where stroke type may not yet be confirmed.

Deployment Model

A forehead array is applied in minutes by existing EMS or ED staff. Nothing is implanted and no procedure room is needed, so StrokeGuard follows patients through the clinical workflow and travels with them during transfer.

Non-Invasive

External electrodes contact forehead.
No surgical intervention.

Wearable & Portable

Applied like a headband. Travels with the patient through the clinical workflow.

Rapid Deployment

Applied to the forehead in minutes by existing EMS or ED staff, ready for use in the transit window.

Adaptive closed-loop control, in real time.

Static, open-loop delivery cannot overcome biological habituation or patient variability. This is the reason historical neuroprotection approaches have failed. StrokeGuard is built on a physical AI architecture that continuously senses each patient's hemodynamic state and adapts stimulation to deliver lasting neuroprotection.

StrokeGuard Closed-Loop Control 01 SENSE NIR Optical Sensing 02 PROCESS AI Closed-Loop Algorithm 03 ACTUATE Trigeminal Nerve Stimulation HEMODYNAMIC FEEDBACK
01

Near-Infrared Optical Sensing

Multi-wavelength near-infrared source-detector pairs continuously monitor regional cerebral oxygen saturation in watershed regions.

02

AI Processing

Proprietary physiological closed-loop algorithm dynamically adjusts stimulation parameters in real time.

03

Trigeminal Nerve Stimulation

Precisely calibrated electrical pulses delivered non-invasively through forehead electrodes.

Advancing the standard of stroke care.

We partner with clinical institutions, EMS systems, device manufacturers, and investors who share our mission to bring neuroprotection to patients.