This device delivers continuous positive airway pressure therapy for treatment of obstructive sleep apnea in patients weighting over 30kg. Its meant for home use and in a hospital environment. This product not should be used in patient who have the following contraindications:

Absolute contraindication: pneumothorax, mediastinal emphysema, cerebrospinal fluid leakage, craniocerbral trauma or intracranial injury or intracranial pneumatosis, untreated shock due to various reasons, frank epistaxis, uncontrolled upper gastrointestinal hemorrhage, coma or unconscious patient who is obviously unable to assist or accept the mask treatment, vocal cord polyps etc.

Relative contraindication: coronary heart disease with left heart failure, acute otitis media, repiratory distress with weak cough, weak autonomous respiration (except for T mode), cases of tracheal cannula (pernasal or peroral) intubation or tracheostomy, server rhinobyon due to any known cause, bullae in lungs, allergy to breathing mask, etc.