ODetect - Overdose detection Project

### DESCRIPTION ( Introduce yourserlf and your project)

We are a group of UBC students developing an open-source technology platform to address the ongoing opioid overdose crisis. 

Current problem 

• Opioid overdose deaths in 2017 recently passed 1100 (British Columbia)
  

• Deaths due to opioid overdoses overwhelmingly (80%) occur indoors  in private residences
  

• The BC take home naloxone program has given out 40,000 kits out of 550 sites. A naloxone kit is never too far away
  

Physiology

• Respiratory depression is an early marker of opioid overdose

• Gold standard respiratory rate measurement is through spirometry

• Respiratory rate can be extracted in a non-invasive way through the plethysmograph waveform (pulse oximetry). Frequency, Amplitude, Baseline variations in the pleth waveform are correlated to Resp rate.

• Alternatively, temperature measurement at nostrils/mouth indicates inspiration (ambient air, lower temperature) versus expiration (air heated up, higher temp)

### TECHNICAL DETAILS (With project photos)

• 3 part solution

• Sensor - Reflectance pulse oximetry and thermal airflow sensor

• Wireless transmission - Bluetooth low energy transmission

• Algorithm - Signal processing, adaptive learning to go from Pleth waveform to RR

• Form will be something worn by the user (wrist, finger, hangs between nose and mouth over the ears for example)

• How it works? System will push sensor data to phone. Use computing resources on the phone to process raw data. Networks phone is connected to 

• System level response - Collaboration with brave.ly to take device reports and solicit a system response

### Words to PCBWay

PCBway has been instrumental in the process of PCB design. With turnaround times of under a week and great quantities for some of the least rates out there, they have really been helpful for this project.