Overview
A flexible PCB biosensor platform designed for continuous physiological monitoring in ambulatory patient populations.
- Multi-layer polyimide flexible substrate with components placed on rigid islands.
- Integrated dry contact ECG electrodes, bioimpedance sensors, and respiration sensing.
- Three-axis accelerometer to track motion artefacts and activity levels.
- Bluetooth Low Energy (BLE) SoC for wireless data transmission.
- 72-hour operation on a micro-rechargeable cell with real-time data compression.
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Challenge
Creating an ultra-thin, skin-conformable patch for continuous ECG monitoring that survives bending, stretching, and moisture exposure.
Solution
Utilized TPU/polyimide hybrid flex design, custom micro-molding encapsulation, and a low-profile Bluetooth SoC.
Outcome
Survives standard IP27 liquid immersion testing and delivers up to 7 days of continuous cardiac recording.
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