Conceptual model of low-cost improvised bubble continuous positive airway pressure device for adults and its potential use in the COVID-19 pandemic
Fig 3
A mock model demonstrating U-shaped manometer filled with (A) dyed normal saline, (B) tight-fitting face mask, (C) fast-curing epoxy putty, (D) container containing NS, (E) port through which blended air can be passed, (F) and plastic tubing.
NS, Normal Saline.