Medical apparatus and instruments, namely, device for the delivery of medical gas to be used at home or in a hospital or in cardiac surgery; Diagnostic, examination, and monitoring equipment, namely, medical and medicine diagnostic systems, detection systems, and monitoring systems for persistent pulmonary hypertension of the newborn, viral community acquired pneumonia, chronic obstructive pulmonary disease, cystic fibrosis, bronchiolitis, and non-tuberculosis mycobacterium and delivery systems of nitric oxide for the treatment of persistent pulmonary hypertension of the newborn, viral community acquired pneumonia, chronic obstructive pulmonary disease, cystic fibrosis, bronchiolitis, and non-tuberculosis mycobacterium; apparatus and instruments for use in connection with the administration of gases to patients for medical and therapeutic purposes, namely, medical and therapeutic gas delivery systems; apparatus and instruments for setting, measuring and regulating the mixture of medical and therapeutic gases delivered to patients