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Researchers Have Built A Wearable Robot That Helps People With Paralysis Sing

Seoul National University researchers have built a wearable robot that helps people with ​​spinal cord injuries breathe, cough, and sing by applying pressure to their lungs.

​​“All wearable robots today are about moving the limbs, like the arms, the shoulders, and legs,”  Cho Kyu-jin, director of SNU’s Soft Robotics Research Center said. “[Exo-Abs is] basically changing the whole volume of your body.” 

The challenge:

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Spinal cord injuries can weaken the muscles used to breathe and cough. While the need to breathe is obvious, coughing is important, too — it clears secretions and bacteria from the lungs, minimizing the risk of infections that can develop into pneumonia.

If this weakness is severe, a person may need the help of a ventilator and breathing tube (inserted into the mouth or nose). They may also need to undergo respiratory therapy, practising their breathing and actively forcing themselves to cough to keep their lungs clear.

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Beyond these biologically essential actions, paralysis can also make it difficult or even impossible for a person to speak or sing. 

A paralyzed man in a swimming accident said:

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“The singing I did before and after was completely different. The tones, the sounds, the beats — I couldn’t make it anymore after I was injured. It was a sound that was unlistenable.”

Exo-Abs consists of several bands that wrap around a user’s torso. When these bands tighten, they apply pressure to the diaphragm that makes it easier for the user to breathe, cough, speak, or sing.

“When you breathe out, you’re basically pushing the belly and narrowing down the volume of the lungs, so we’re trying to mimic that process,” Cho said.

How does it work?

The machine that causes the bands to tighten or relax is small enough to fit into a backpack, which can be slung on the back of a wheelchair, and an AI lets the wearable robot know what level of pressure to apply and when.

That is based on information about the user (their fitness level, body shape, etc.) as well as data collected by sensors — a microphone listens for signs they’re trying to talk, and a sensor-filled tube around the waist monitors their breathing.

Lee was an early tester of Exo-Abs, and it helped him recover the muscle memory needed to major in opera at SNU and perform with the KBS Symphony Orchestra. Thanks to it and the rest of his respiratory therapy regimen, he can now sing without the device.

Looking ahead for others.

Other patients undergoing respiratory therapy are now getting a chance to train with Exo-Abs at SNU Hospital. Its creators are hopeful the wearable robot might one day provide people in need of breathing assistance with a less-intrusive alternative to ventilators.

“As this technology develops, perhaps it will become like self-driving cars where it gets better and better,” Lee said. “As with many prototype devices, I’m hoping this device as well becomes lighter, portable, and beautifully designed in the future.”

As promising as this new technology sounds it does sound worrying in the case where the robot’s system shuts down or it experiences other technicalities that will definitely affect the person wearing it.

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Vanessa Waithera
Vanessa Waitherahttps://techmoran.com
Vanessa Waithera is a young writer from Daystar University. She has been a writer for 7 years and enjoys it as a hobby and passion. During her free time she enjoys nature walks, discoveries ,reading and takes pleasure in new challenges and experiences. Contact: [email protected]

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