Three things to know:
1. An engineering team at Duke University in Durham, N.C., used 3D-printed parts to reconstruct the helmets into a powered air purifying respirator.
2. The re-designed PAPR system was tested by Precision Air Technology, a high-efficiency particulate air certification company, before care providers began using it.
3. The engineering team created more than a dozen additional helmets for Duke Health and made the design available for others to 3D-print their own PAPRs.
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