James

 Nixon 

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Smart Medical Device · 2025–26

O.N.Y.X.

O.N.Y.X. knee brace

O.N.Y.X. — Orthopedic Neural-adaptive Yield & eXoskeletal Support — is a smart wearable knee rehabilitation brace developed as my final-year project at UWE Bristol. It combines pneumatic compression, Peltier thermal therapy, and Arduino-driven adaptive feedback into a single integrated device.

The project grew directly from my own multi-year recovery from a serious knee injury. The gap between clinical physiotherapy sessions and unsupported at-home recovery is where most patients struggle — O.N.Y.X. was designed to close that gap.

Developed over the final year of my degree, the project encompassed industrial design, electronics engineering, firmware development, clinical research, and commercial strategy. Hardware was validated through extensive prototyping and iterative firmware development across multiple versions. Clinical placement protocols were informed by input from physiotherapy practitioner Matthew Bishop at Salford University, covering thermal application sites, compression sequencing, and session timing.  

Controller

Arduino Mega 2560

Thermal range

14°C – 37°C

Compression modes

3 programmable

Motors

4× GA12-N20 via 2× DRV8833

Thermal modules

2× TEC1-12706 Peltier via L298N

Sensors

MF52-103 NTC thermistors

Power

IP5328P module + keep-alive

Feedback

WS2812B LED strip

Regulatory path

Class IIa — MHRA/UKCA

Electronics detail
Brace worn
CAD render
Components
O.N.Y.X.