Secure Wireless Disposable Pulse Oximeter Patch that Generates a PPG Waveform

Stancil Technologies is developing WiSPR (Wearable Physiological Monitoring with Low-Power Wireless Sensing, Processing and Recording), a disposable multi-sensor patch capable of collecting and wirelessly transmitting a variety of physiological measurements to a handheld smartphone or tablet. WiSPR can be quickly applied by a combat medic or soldier to provide real-time health status monitoring using a secure wireless connection. Additionally, the patch will provide interfaces by which to select operational profiles to maximize accuracy and response time (in the case of an injured soldier) or maximize endurance and battery life for over multiple days of extended use. Because of its low cost, WiSPR can be liberally distributed over a wide range of locations on the body and discarded after use. Based on the physiological signals measured, the patch dynamically determines where on the body it is located and uses this information to filter the data collected. Filtered patch data can then be fused statistically with data from other patches on the body to produce more accurate combined health state estimates for the medic. The patch is constructed using a patented process embedding integrated chips and electrical traces within soft, lightweight, stretchable, and breathable elastomer casing that matches the elasticity of skin.