A hand-held device used to provide positive pressure ventilation to patients who are not breathing adequately.

The Ambu Mark IV comes in two models: adult and infant, with an ergonomic grip for easy handling and operation; autoclavable at 134°C for high-temperature, high-pressure disinfection, ensuring safe and efficient reuse; the world's only double-layer bag design offers a more comfortable feel and enhanced durability; built-in airway pressure limiter protects the airway from excessive pressure for improved safety; integrated handle allows for one-handed operation while maintaining consistent pressure.