A Shreeyash 900 ICU Ventilator is a machine that aids or improves breathing by pushing air into the lungs. Intensive care unit patients may require the assistance of a ventilator. If a person is unable to breathe properly on their own, doctors may have to make use of the ventilators. This might also be due to the fact that they are under general anaesthesia or have a respiratory ailment. In both hospitals and ambulances, ventilators serve a critical role in saving lives.