02 / Device Architecture

Sense. Predict. Intervene.

Every HEALIX device runs a four-stage closed-loop cycle at 1 Hz. The architecture is shared across Cast and Patch, with only the sensor modality and therapeutic payload differing. Clinicians retain full remote override at every stage.

01

Biosensing Layer

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Electrochemical, optical, acoustic, and impedance sensors sample the biological environment at up to 1 Hz, generating a continuous stream of patient-specific biomarker data.

MEMS sensorsNanomaterial electrodesPhotodiode arrays
02

On-Device AI Engine

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A quantised neural network running on an ARM Cortex-M55 + Ethos-U55 NPU fuses sensor streams, filters artefacts, and runs the dosing decision model in under 200 ms.

TensorFlow LiteFederated learningExplainable AI
03

Precision Delivery

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A MEMS micropump drives drug through a micro-needle array or hydrogel reservoir. Dose is computed per-patient based on weight, biomarker levels, and pharmacokinetic model.

Piezoelectric micropumpHollow micro-needlesPK/PD modelling
04

Cloud & Clinician Layer

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Encrypted data streams to HIPAA-compliant cloud. Clinicians receive dashboards, trend alerts, and can override or adjust therapeutic parameters remotely.

HL7 FHIREHR integrationHIPAA / GDPR
Hardware Platform
  • ARM Cortex-M55 MCU + Ethos-U55 NPU
  • 12-bit ADC, 1 MSPS sampling rate
  • AES-256 hardware encryption
  • BLE 5.3, LTE-M, NFC dual-stack
  • 300 mAh LiPo · Qi wireless charge
  • IP68 waterproof enclosure
Software & AI
  • RTOS: Zephyr OS (safety-certified)
  • ML model: 4-layer LSTM + attention
  • Inference latency: <200 ms on-device
  • OTA firmware updates (signed)
  • Federated learning keeps all raw data on the device
  • IEC 62304 software lifecycle compliance
Drug Delivery System
  • Piezoelectric MEMS micropump
  • 280 μm hollow titanium micro-needles
  • Dosing resolution: 0.1 μL per stroke
  • Pre-filled, sterile drug cartridge
  • Anti-backflow valve array
  • Dual occlusion detection sensors
Data & Compliance
  • HIPAA / GDPR / MDR 2017/745
  • HL7 FHIR R4 API
  • ISO 14971 risk management
  • 21 CFR Part 11 audit trails
  • SOC 2 Type II cloud infrastructure
  • End-to-end TLS 1.3 encryption

03 / IoT Platform

Device data. Drug logs. One screen.

The HEALIX app gives patients and clinicians a unified view of biosensor streams, therapeutic activity, and healing progress across both devices from a single dashboard.

01

Live Biosensor Dashboard

All sensor streams in real time including bone healing index, skin hydration, and itch event count. One-tap vibration relief or emollient release from the dashboard.

02

Medication Log & Override

Full history of every automated dose. Clinicians can remotely adjust dosing windows, max doses, and drug concentration.

03

Healing Timeline & Milestones

AI-generated recovery roadmap with predicted bone union date, wound closure score, and physiotherapy phase guidance.

04

Clinician Portal & Alerts

Priority-ranked alert feed with AI triage scores. One-tap telehealth video call. FHIR export to EHR with one click.

05

Patient Journey & Gamification

Compliance streaks, physiotherapy exercise library with AR guidance, and weekly progress reports shared with care team.

06

Family & Carer View

Family members receive a daily digest and emergency alerts through permissioned sharing, without accessing clinical detail.

● Live
James R. · Day 14 post-op
🦴 CastActive
🩹 PatchActive
Bone Healing Index · 24h
Pain Score2/10
Last Dose2h ago
Temp36.8°C
Skin Hydration78%
Itch Events0 today
Emollient6 days left
✓ No alerts · All sensors nominal
● Live
Medication Log
06:32Ketorolac 5mg auto-dose
10:15Ketorolac 5mg auto-dose
14:00Ketorolac 5mg auto-dose
18:45Ketorolac 3mg reduced, pain 1/10
22:00Next scheduled dose
Total today: 18 mg · Max: 40 mg · Safe ✓
● Live
Recovery Roadmap
Phase 1: Inflammation (days 1–5)Complete
Phase 2: Soft Callus (days 6–14)Complete
Phase 3: Hard Callus (days 15–40)In progress · Day 14
Phase 4: Remodelling (days 41–90)Predicted: Mar 15
● Clinician
Alerts · Priority Queue
🟢
James R.

Cast · All metrics stable

Now
🟡
Sarah M.

Patch · PCT rising 0.45→0.68 ng/mL

12m
🟢
Daniel K.

Cast · PEMF session complete

1h
● Live
Your Journey
🔥 14day streak
Today's PT
✓ Ankle rotations × 30
✓ Quad sets × 20
○ Straight leg raise × 15
📤 Share report with Dr. Chen
● Family
Carer View · James R.
😊 James is recovering well
Pain level todayLow (2/10)
Steps today1,240
PT exercises2 of 3 complete
Next clinic appt.Feb 25
🔔 Emergency alerts are ON