Inexpensive ventilator

grabcad

Last resort. When ventilators are in short supply and death is a looming possibility, this makeshift device can be cobbled together with basic workshop materials. The top shelf must be sturdy enough to compress the ambibag as the wheel turns. Adjust the clamps on the four cylinders to restrict airflow into the bag. Modify the motor speed (red) to control breaths per minute. Install a pressure valve to regulate air pressure delivered to the patient. The blue oval represents the ambibag, supplying oxygen to the patient. I envision mass production of this device for pandemic situations where conventional ventilators are unavailable. This prototype is not intended as a substitute for traditional ventilators; it should only be used in emergencies and requires further testing. Although I've never built or tested this model, sharing its design may inspire someone to refine it and utilize it in critical situations. For a brief explanation video, visit the Instagram post under @drreza.sa on March 16, 2020.