Can We Innovatively Modify the Surgical Helmets to Protect Against the Droplets and Aerosols of COVID-19?

Abstract

We tested the filtration efficiency of Stryker T5 surgical helmets with and without the addition of a filter medium. Two particle counters were used to count the particles of sizes.5 μm, 1 μm, and 5 μm, both inside and outside the Stryker T5 helmet, concurrently. The total inward leakage (TIL) for the helmet with and without the filter was zero for 5 μm particles at all time points. The TIL (3.4) for the.5 μm particles decreased significantly after application of the filter (1.7; P =.007). We recommend that an N95 should be used inside the helmet system.