London: A 22-year-old college student in the UK, who suffered from acute asthma since he was a child, has developed an inhaler which signals whether a user has taken the right dosage.Josh Averill, an undergraduate in product design at Nottingham Trent University in UK, claims his invention has the potential to alleviate people`s symptoms by helping ensure they administer the medicine correctly.Manufactured using 3D printing, the inhaler features a piezo sensor that measures airflow as it passes through it. If the user breathes in correctly - and in doing so increases the airflow - a green LED lights up. But if an inadequate amount is inhaled, a red one illuminates.Two buzzes are also sounded; the first to signal when the user should start to inhale and the second to let him know when to stop holding his breath.
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