Dr. Scott Augustine wants to breathe fresh air into allergy treatment. More specifically, a bubble of fresh air.

Augustine, a medical device inventor, is raising $5 million to back PureZone Technologies. The Eden Prairie, Minn., start-up is developing a pillow-based air filtration system that creates a bubble of fresh air around allergy patients while they sleep.

Although PureZone’s system doesn’t require approval from the Food and Drug Administration, the company sponsored a clinical study last year that yielded promising results.

Photo by Leader-Telegram.

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