Coronavirus has sparked a new conversation about the difference between ventilators, CPAP and BiPAP machines.

A CPAP machine helps people with trouble breathing and is commonly used to treat sleep apnea. CPAP machines can't directly replace ventilators, as they have key differences in how they work.

Hudson remodeled Airsense 10 because he thought that the difference between CPAP and BiPAP terminals was not the hardware but the software program.

And hospitals have to add a viral filter so infected air isn't released into the hospital; the masks used with CPAP and BiPAP machines typically release unfiltered air back into their surroundings.

In the meantime, the company is still in the process of testing the ventilators included in the recall—which contain a different type of PE-PUR foam than the CPAP and BiPAP machines—and is ...