Clinical Practice : 1. Hopspital: economic, no need to stop machine, saving hospital's cost 2. Nurse: improving mechanial ventilation's effectiveness, improving airway management quality and successful rescue rate, and 3. lessening the workload of doctors and nurses. 4. Patient: decreasing the possibility of airway infection, lessening complication, improving patient's life quality, preventing relative 5. pneumonia of respiratory machines.
In General: 1. Improving sputum suction effectiveness 2. Lessening nurse's workload 3. Avoiding pollution and cross infection 4. No need to terminate ventilation, not influencing airway pressure 5. Complete tightness, protecting the safety of patients, doctors and nurses. 6. Easy to operate, convenient, saving time and money, satisfying patient's need in time