AMBU BAG BEST PRICE IN CHENNAI AMBU BAG DEALERS IN TAMILNADU AMBU BAG BEST PRICE PARRYS AMBU BAG BEST PRICE MOUNT ROAD An AMBU bag, also known as a manual resuscitator or bag valve mask (BVM), is a device used to provide respiratory support to patients in emergency and non-emergency situations. It consists of a self-inflating bag, a mask or mouthpiece, and a valve to control the flow of air.