Prof. Nachiketa Tiwari, Department of Mechanical Engineering, IIT Kanpur and Prof Devendra Gupta, In-charge, Covid-19 ICU (SGPGI) have developed a working prototype of a Positive Pressure Respirator System. The PPRS system addresses the problem of the acute global scarcity of N95 respirators, which are a critical component of PPE Kits.
It is a safer alternative to the N95 respirator as it provides uncontaminated air and isolates the health professionals from the exposure to the virus.
It can be built fairly quickly, using local resources & in large numbers.