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Researchers design miniaturized 3D-printed device to treat middle ear infections Middle ear infections, also known as otitis media, affect more than 80% of the children in the U.S. In a new study, researchers have designed a miniaturized 3D-printed device to inactivate Pseudomonas aeruginosa, a common bacterium that causes the infection. The device a microplasma jet array generates plasma, which is composed of charged particles and reactive molecules that have been previously shown to inactivate various pathogens. This is the first time anyone has tried treating middle ear infections using plasma technology, said Jungeun Won, a graduate student in the Boppart lab. Usually, the treatment involves using antibiotics or surgical intervention. ....