Ventilator * AII6000B has five kinds of capacity - control ventilation mode (IPPV A/C, A/C + Sigh, SIMV, SPONT), to suit the patient's breath under different conditions. * The equipment can adjust the oxygen concentration. * The equipment has a large display screen (5.7 ") which can display the patient's respiratory parameters curve (respiratory tract pressure). * The machine has three sets of emergency ventilation mode (adult, child, infant), can set quickly under the emergency situation. Patient ventilation hose components * Inhalation gas through transmit to the patient through ventilation hose components; it includes the ventilation hoses and patient valve. * Ventilation hose components have unique design even if AII6000B host failure, patients also can spontaneous breath. * Ventilation hose components have reusable and disposable