The Puritan Bennett 840 ventilator features our PAV+™ software, a breath type that better manages a patient’s work of breathing and supports more natural breathing compared to conventional mechanical ventilation. With the addition of optional advanced technology upgrades, this ventilator can meet the specific needs of practically every patient type you care for — from neonatal patients weighing as little as 300 grams to adult patients weighing as much as 150 kg.