Syringe turns blood red when it’s been used

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The re-use of unsterile needles can cause a variety of infections such as Hepatitis B and HIV, and is the cause of 1.3 million deaths worldwide, according to the World Health Organization. The LifeSaver hypodermic needle could put an end to those fatalities, by changing color once it's been used to alert medical professionals. Developed by David Swann, a design researcher at the University of Huddersfield, UK, the barrel of the syringe features an 'intelligent ink' that reacts to air when the needle has been removed from its packaging. When opened, the needle turns bright red within 60 seconds to…

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