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UBC students creating overdose detector

The wearable detector aims to help combat B.C.鈥檚 opioid death crisis
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An early prototype of a device students at UBC have created to detect drug overdoses is shown in a handout photo. Image credit: Courtesy of Sampath Satti via The Canadian Press.

VANCOUVER 鈥 A group of students at UBC have turned to technology in an effort to address the opioid crisis by creating a wearable device they say can detect an overdose.

The six engineering, medical and design students wanted to focus on people who could overdose indoors, where others can鈥檛 see or help them, said Sampath Satti, a biomedical engineering graduate student.

More than 900 people fatally overdosed across B.C. last year, many of them victims of the opioid fentanyl. Free kits containing the overdose-reversing drug naloxone are available at hospitals, drop-in centres and shelters as part of an effort to save lives.

But people are still dying.

鈥淭he people who have naloxone kits and are trained to use them are not coming in frequent contact with the people who need to use them,鈥 Satti said.

The group has created a device that is worn on a person鈥檚 wrist, with a wire connecting to a sensor on a fingertip, that can detect when a user has stopped moving and breathing.

Satti compared the technology to a wearable fitness tracker that monitors a person鈥檚 heart rate. The overdose detector would sound an alarm if a person鈥檚 vital signs fall below a certain threshold, alerting others to a possible overdose so naloxone can be administered.

Through its research, the group has determined there鈥檚 a window of about five or six minutes between when an overdose is detected and when someone can be saved, Satti said.

So far, team members have been testing the technology on themselves in a lab, and Satti said they鈥檙e optimistic about the results.

鈥淭he detection is actually quite promising. We can get a sufficiently good reading of the breathing rate when it鈥檚 tested on ourselves.鈥

Next week, they plan to start working with an overdose prevention site in Vancouver鈥檚 Downtown Eastside to collect more data and see if their methodology can be used reliably outside of a controlled environment.

Eventually, they鈥檇 like to create a version of the device that looks like a watch or a fitness tracker, without a fingertip sensor or any additional wires.

Satti said the aim is to produce the gadgets for about $30 each so they could be used at overdose prevention sites or wherever people typically use illicit drugs. The device was created to only monitor vital signs and have no value if it were lost or stolen.

The technology isn鈥檛 meant to replace other safe drug-consumption practices, he said.

鈥淲e don鈥檛 want this device to give people false confidence to use alone,鈥 he said. 鈥淲e would ideally like this device to work together with other harm-reduction measures.鈥

Satti said emergency room doctors, front-line workers and drug users have welcomed the invention.

鈥淚 think one of the reasons the response has been positive is that this is one of the first technological approaches towards the opioid process. It piques a lot of interest.鈥

Gemma Karstens-Smith, The Canadian Press





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