Hand Smart
Sleeve
Bringing proportional stimulation and fine-grain sensing to the most intricate part of the upper limb — for the improvement of grasp, pinch, and dexterity recovery for patients following TBI, stroke, accidents and surgeries.
Completing the recovery loop
The arm and leg restore the large movements that get a patient moving again. The hand restores independence — the ability to grasp a cup, fasten a button, hold another person's hand.
Dexterity Recovery
Targeting the fine motor control that defines hand function — beyond gross grip into pinch, release, and individuated finger movement.
Same Edge-AI Core
Built on the proven PREMS.AI platform — the same adaptive control engine and signal pipeline that powers the Arm and Leg sleeves.
Patient Independence
The hand is where rehabilitation becomes daily life. Restoring it is central to the PREMS.AI mission for stroke, TBI, and SCI patients.
What the Hand Sleeve will do
Target capabilities under active research and development. Specifications are provisional and subject to change as the design matures.
Finger & Thumb Actuation
Independently addressable stimulation channels mapped to the extrinsic and intrinsic muscles driving each digit.
Fine-Grain sEMG Arrays
High-density surface-EMG sensing to resolve subtle, individuated muscle intent across a small anatomical area.
Grasp & Pinch Retraining
Task-oriented stimulation patterns supporting power grip, precision pinch, and controlled release.
Wrist-Mounted AI Module
Control electronics relocated to the wrist to keep the hand itself low-profile, flexible, and unobstructed.
Conformable Glove Form Factor
A breathable, washable textile glove with concealed conductive traces — consistent with the family's design language.
Cloud-Linked Progress Tracking
Per-digit performance metrics streamed for clinician review, integrated with the existing PREMS.AI dashboard.
The path to the hand
An indicative development sequence. Timing reflects current planning and is not a commitment to specific dates.
Phase 0 · Complete
Platform Foundation
Arm and Lower Leg sleeves establish the shared edge-AI core, sensing fabric, and stimulation architecture the hand will inherit.
CompletePhase 1 · Current
Concept & Feasibility
Anatomical mapping, electrode-layout studies, and form-factor concepts for a high-density hand interface.
In ProgressPhase 2 · Planned
Prototype & Bench Testing
Functional prototypes, signal-fidelity validation, and stimulation-channel characterization on the bench.
UpcomingPhase 3 · Planned
Regulatory & Clinical
Leverage the FDA 510(k) predicate pathway; structured usability and clinical evaluation.
UpcomingPhase 4 · Planned
Pilot & Launch
Limited clinical pilots, manufacturing scale-up, and introduction to the Smart Sleeve family.
UpcomingIn development. The Hand Smart Sleeve is a roadmap concept and is not currently available for sale or clinical use. Capabilities, specifications, and timelines described here are provisional and may change. This page does not constitute a medical claim or an offer of a cleared medical device.
Be first to know
Clinicians, researchers, and partners can register to receive Hand Smart Sleeve development updates as the program advances.