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Protexo aims to help asthmatics breathe easier while sleeping


November 25, 2011

The Protexo is a device that blows cool air on asthma sufferers as they sleep, to keep allergens away from their "breathing zone"

The Protexo is a device that blows cool air on asthma sufferers as they sleep, to keep allergens away from their "breathing zone"

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Asthmatics have it hard enough when they're awake, having to periodically use their inhalers, or remove themselves from situations that could trigger an attack. For some of them, however, their symptoms get even worse when they go to bed, preventing them from getting a good night's sleep. Airsonett, a Swedish medical tech company, is attempting make life easier for those people. It has created a device called the Protexo, which it claims should be of great assistance to night-time asthma sufferers.

According to Airsonett, the heat rising from the exposed skin of a sleeping person creates a chimney effect, drawing cooler air from the immediate vicinity towards the head, and then up. As that air travels through and across the bed sheets (which are a significant source of allergens), it picks up particles from those sheets and brings them to the person's nose, where they are inhaled.

The Protexo works by gently blowing a stream of filtered air down onto the person, that air being slightly cooler than the air in the room. This cancels out the chimney effect, and in fact serves to move the particle-laden air away from the person's face. The device is apparently able to modulate the velocity of its air flow, in order to break the convection effect, while still creating as little draft as possible.

Known as Temperature controlled laminar airflow treatment, or TLA, the technology has reportedly been shown to result in a 3,000-fold reduction of particles measuring half a micron and larger, as measured in the breathing zone. It is also said to improve on the performance of a best-in-class air purifier by a further 99 percent.

In a recent year-long study, a group of 281 non-smoking asthma sufferers from six European countries regularly used either a Protexo, or a dummy device. At the end of the trial, the Protexo group scored 14 to 15 percent higher when evaluating their quality of life, but also showed significant decreases in nitric oxide and immunoglobulin E levels, both of which are indicators of inflammation.

There's no word on pricing or availability, but interested parties can find more information on the Airsonett website.

About the Author
Ben Coxworth An experienced freelance writer, videographer and television producer, Ben's interest in all forms of innovation is particularly fanatical when it comes to human-powered transportation, film-making gear, environmentally-friendly technologies and anything that's designed to go underwater. He lives in Edmonton, Alberta, where he spends a lot of time going over the handlebars of his mountain bike, hanging out in off-leash parks, and wishing the Pacific Ocean wasn't so far away. All articles by Ben Coxworth

This could help a lot of people. I hope it makes it to the USA.

Carlos Grados

Great relief to Asthma patients

Anumakonda Jagadeesh

and I just put a ceiling fan in, boy I bet this is so much cheaper than $39


I'm about to use this machine on a trial ... Will he interesting to see the results..

Sarah Howard
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