Wearable Device for Monitoring Health/Activity Levels

Back to all technologies
Download as PDF
Existing wearable technology for monitoring activity also monitors heart rates using plethysmography; however, such technology cannot detect respiration or blood oxygenation levels from plethysmograph or from the wrist. Photoplethysmography uses an LED and photodiode to measure reflected light through human tissue. Existing heart monitors and pulse oximetry sensors worn on the finger use photoplethysmography; however, respiration and pulse oximetry have not been performed on the wrist nor is respiration detected from a finger.

Researchers at Purdue University have developed a wearable device, i.e., watch, that detects respiration rate, heart rate, and oxygen saturation using photoplethysmography. All physiologic measurements are obtained in a single, easy-to-access device that is worn on the wrist. In addition, it can monitor exercise and disease states, such as drug overdose, asthma, seizure, or other health issues, affecting respiration, heart rate, and/or oxygen saturation. In addition, this device calls for emergency response when a drug overdose is detected, breathing/heart rate stops, and/or oxygen saturation drops below an acceptable threshold. This technology makes advances beyond the popular wearable watch that monitors activity, by using technology that monitors an individual's physiologic state and disease state and calls for emergency response.

-Wearable on wrist
-Physiologic measurements
-Monitors and detects drug overdose and disease states affecting respiration, heart rate, and/or oxygen saturation
-Calls for emergency response
-Potential integration with existing technology

Potential Applications:
-Monitor health/activity
-Detects respiratory rate, heart rate, and oxygen saturation
-Detects drug overdose
Oct 12, 2018
Utility Patent
United States
Sep 29, 2020

Sep 28, 2020
CIP-Gov. Funding
United States

Oct 15, 2018
United States

Oct 12, 2017
United States
Purdue Office of Technology Commercialization
The Convergence Center
101 Foundry Drive, Suite 2500
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org