Measured across the full window.
Validation figures from independently labelled clinical ECG datasets.
Why 21 days changes everything.
Paroxysmal arrhythmias and rare conduction events are routinely missed inside 24–48 hour windows.
Higher AF Detection
Up to three times the paroxysmal AF yield of a standard 7-day window in cryptogenic stroke patients.
Events After Day 7
Most clinically significant episodes present beyond the conventional monitoring period.
Return Visits
Applied once, worn for the full protocol. Data streams to the portal without a clinic revisit.
Autonomous Triage
On-device AI classifies every beat within milliseconds, independent of network connectivity.
Applied once.
Worn for three weeks.
No leads, no wires, no belt pack — a single adhesive patch that records, classifies and transmits without the patient thinking about it.
Six layers.
Ten millimetres.
Scroll to assemble the patch — every layer specified, sourced and bench-tested in-house.
Six systems. One patch.
Integrated sensing and intelligence, applied once for three continuous weeks.
ECG Monitoring
Clinical-grade single-lead ECG with continuous rhythm analysis, validated against standard Holter recordings.
Continuous · 21 DaysEdge AI Triage
A quantised deep learning model runs entirely on the patch. No data leaves the device to be classified.
On-Device · No CloudBio-Z Sensing
Simultaneous bioimpedance gives fluid status and respiration rate — unique to Atria in this form factor.
Fluid & Respiration21-Day Battery
Ultra-low-power hardware with intelligent duty-cycling covers the full window on a single charge.
No Mid-Study SwapBLE 6.0 Wireless
Encrypted streaming to the companion app with parallel on-device logging and automatic resync.
Zero Data LossMotion Compensation
Accelerometer data cross-referenced against the bio-Z channel removes walking and exercise artefacts.
Adaptive FilterSignal to classification, on the patch.
A five-stage pipeline running end to end on-device — raw acquisition through to physician-ready output.
Acquisition
High-resolution capture via a clinical-grade analogue front-end.
Preprocessing
Baseline wander removal and bandpass filtering isolate cardiac components.
Feature Extraction
Beat detection and heart rate variability intervals computed in real time.
AI Inference
A quantised model classifies rhythm patterns with no cloud round-trip.
Output
Events annotated with confidence scores and timestamps, pushed to the portal.
Validated to clinical grade.
Held across the full 21-day window on independently labelled ECG datasets.
Premature ventricular complex burden validated across a range of clinical thresholds.
From cardiac event onset to classified output, entirely without a network round-trip.
Too fast, too slow, or broken.
Atria® 21 is built to catch every category across three weeks — including the rare paroxysmal episodes a 24-hour Holter never sees.
Supraventricular
SA node · atria · AV node
Ventricular
Ventricles · Purkinje fibres
Bradyarrhythmias
Under 60 bpm · conduction disease
Pacemaker Monitoring
Spike identification · malfunction
Where Atria® pulls ahead.
| Capability | Atria® 21 | Medtronic SEEQ | Philips Holter | iRhythm Zio |
|---|---|---|---|---|
| Monitoring duration | 21 days | 14 days | 1–2 days | 14 days |
| Real-time alerts | ||||
| Pacemaker detection | ||||
| Bio-Z fluid monitoring | ||||
| Respiration monitoring | ||||
| Edge AI — no cloud | ||||
| Motion compensation | ||||
| Wireless standard | BLE 6.0 | BLE 5.x | BLE 5.x | BLE 5.x |
| Ingress / defib rating | IP67 · Defib | IP67 | IPX4 | IP67 |
| Form factor | 38 × 40 mm | Comparable | Bulky + wires | 38 × 52 mm |
Straight to the physician portal.
BLE 6.0 Streaming
Encrypted and continuous, with automatic resync after any disconnection.
Local Logging
Every sample written to on-device storage as a parallel backup path.
Encrypted Transit
HIPAA and GDPR-aligned handling from patch to portal.
Physician Portal
Classified events surface live, annotated with confidence and timestamp.
Ready to run
a clinical site?
We're working with clinical sites, distribution partners, and grant co-applicants on the Atria® 21 programme.