Puritan Bennett PB840 Ventilator offers superior comfort delivering sensitive and precise breaths to critically ill neonatal through to adult patients. Puritan Bennett PB840 Ventilator provides exceptional responsiveness and control. Also a special filter heating process shields against exposure to viruses and bacteria from exhaled gases. Capable of filtering viruses such as SARS by way of the expiratory filter.  PB840 Covidien ventilator is an innovative design easy for technicians to set up and navigate.