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Felix NeuroAI™ Wristband

The First AI Therapeutic for Essential Tremor

FDA-cleared. 100% noninvasive. Cloud AI that listens to your nerves and answers in real time.

Close-up of the Felix NeuroAI wristband industrial design
Medical-grade wearable engineering
Felix NeuroAI wristband worn on the wrist during daily activity
Worn like a watch, calibrated like a therapy
Person using their hands steadily while wearing the Felix wristband
All-day relief, back to everyday tasks

Felix is a breakthrough at the intersection of neurotechnology and artificial intelligence — a noninvasive, easy-to-use alternative to brain surgery and daily medication, engineered to deliver all-day tremor relief for adults living with essential tremor.

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20+Years of neural R&D
1stFDA-cleared AI therapeutic for ET
0Incisions, implants or drugs
24/7Adaptive cloud AI calibration
Senior woman holding a mug steadily, smiling and enjoying a warm drink indoors
About Fasikl

Creating Groundbreaking AI Therapeutics

Fasikl is a Neuro-AI company. Building on more than two decades of intensive research in neural engineering, signal processing and machine learning, our team has pioneered technologies that decode and modulate neural signals — establishing a new foundation for AI-driven therapy.

Our platform lets cloud-based artificial intelligence collaborate directly with the nervous system, so a disease can be managed continuously rather than treated in fixed, one-size-fits-all doses. Fasikl AI doesn't just communicate — it treats.

What makes the approach different

  • Peripheral-first: we reach the nervous system through the wrist, avoiding the risk profile of implanted hardware.
  • Closed-loop by design: sensing, decoding and stimulation run as one continuous loop, not separate steps.
  • Learning over time: models improve with real-world usage data, so therapy keeps pace with the individual.
See the Technology in Action
The Neuro-AI Platform

Three Capabilities, One Continuous Loop

Most neuromodulation devices stimulate blindly. Fasikl's platform is built so the therapy can read the nervous system, understand it, and respond — thousands of times per session.

01 — SENSE

High-Fidelity Neural Signal Decoding

Multi-channel surface sensors capture neuromuscular and peripheral nerve activity through the skin. Proprietary filtering separates true tremor signatures from voluntary motion and everyday noise — the hardest problem in wearable neurotechnology.

02 — DECIDE

Cloud-Based Neural AI

Decoded signals inform models that learn an individual's tremor fingerprint. Because the intelligence lives in the cloud, the therapeutic logic can be refined and validated centrally, then deployed to devices already in patients' hands.

03 — TREAT

Targeted Neural Signal Modulation

Calibrated peripheral nerve stimulation is delivered to precise targets at the wrist, modulating the neural circuits that drive tremor. Parameters adjust to the patient rather than asking the patient to adjust to the device.

How Treatment Works

From Clinical Assessment to Everyday Independence

Felix is a prescription therapy. The pathway below reflects how clinicians and patients typically move from evaluation to sustained daily use.

Clinical Evaluation

A neurologist or movement disorder specialist confirms the essential tremor diagnosis and reviews whether a noninvasive, nonpharmacologic option is appropriate.

Individual Calibration

Sensors map the patient's unique tremor signature. Stimulation intensity and targeting are tuned to comfort and response, not to a generic preset.

At-Home Sessions

The wristband is worn during scheduled sessions at home. No clinic visit, no recovery time, no interruption to medication management decided by the care team.

Ongoing Optimization

Session data informs model refinement over time, while clinicians retain visibility into adherence and response to guide long-term care.

Our Products

Two Systems Built on the Same Neural Core

A cleared therapy available to patients today, and the interface platform that extends Neuro-AI to what comes next.

Felix NeuroAI™ Wristband

A prescription, 100% noninvasive wearable therapeutic for adults with essential tremor of the hand. Cleared by the U.S. FDA and designed for daily life — writing, eating, working, holding a cup.

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Fasikl-X™ Nerve-Computer Interface

A bidirectional, high-resolution channel to the peripheral nervous system. Fasikl-X lets AI both interpret motor intent and deliver therapeutic modulation — opening a pipeline beyond tremor.

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Product availability and indications for use vary by country and are subject to local regulatory authorization. Clinicians, hospital systems and qualified international partners can request market-specific documentation through our contact team.

Experience, Evidence & Accountability

Why Clinicians and Partners Evaluate Fasikl

Neurotechnology claims are easy to make and hard to earn. These are the standards we hold ourselves to.

Regulatory-Grade Development

Felix reached market through U.S. FDA review — a process requiring documented safety and performance evidence, design controls and quality-system discipline rather than consumer-wellness marketing claims.

Deep Engineering Provenance

Our platform originates from long-running academic and industrial research in neural interfaces, biosignal processing and machine learning — not a rebadged consumer wearable.

Clinician-in-the-Loop Care

Felix is prescribed and supervised. We build for the neurologist's workflow, supporting assessment, calibration and longitudinal follow-up rather than bypassing clinical judgment.

Transparent Patient Communication

We describe what the therapy is designed to do, who it is for, and where evidence is still developing. Responses vary between individuals, and we say so plainly.

Common Questions

Neuro-AI, Explained Simply

A Neuro-AI therapeutic is a treatment in which artificial intelligence continuously reads neural and neuromuscular signals, interprets them in real time, and delivers an individually calibrated stimulation response. Instead of a fixed dose, the therapy adapts to the patient moment by moment.

No. Felix is 100% noninvasive. It is worn on the wrist like a watch, requires no implant, no incision and no medication, and is designed for at-home daily use under the direction of a prescribing clinician.

FDA clearance means the U.S. Food and Drug Administration reviewed Fasikl's submitted safety and performance evidence and authorized the device to be marketed in the United States for its cleared indication. Felix is the first AI therapeutic cleared by the FDA for essential tremor.

Fasikl-X™ is our nerve-computer interface platform. It establishes a high-resolution, bidirectional channel with the peripheral nervous system so cloud AI can both decode motor intent and deliver therapeutic modulation — extending the platform beyond tremor toward a broader range of neurological indications.

Yes. Fasikl engages neurologists, movement disorder centers, hospital systems and qualified international partners. Availability depends on local regulatory status — teams can reach our staff through the contact page to discuss regional requirements and documentation.