A medical ventilator may be defined as any machine designed to mechanically move breatheable air into and out of the lungs, to provide the mechanism of breathing for a patient who is physically unable to breathe, or breathing insufficiently.
A medical ventilator may be defined as any machine. This machine is designed to mechanically move breatheable air into and out of the lungs. This was to provide the mechanism of breathing for a patient, or breathing insufficiently. This patient is physically unable to breathe.