Abstract: An auxiliary sputum excretion method for a non-invasive ventilator and the invasive ventilator, solving the technical problem of how to help a patient with non-invasive ventilation to excrete sputum. In the auxiliary sputum excretion method, a sputum excretion operation is initiated in each respiratory cycle of a patient after the non-invasive ventilator determines that the patient needs sputum excretion during a normal mechanical ventilation of the non-invasive ventilator for the patient, and the sputum excretion operation is stopped in response to determining that the patient needs to stop the sputum excretion.

Abstract: An intelligent bionic expectoration system and a three-way device thereof. The intelligent bionic expectoration system includes a negative pressure suction module, a central processing module, a patient interface unit and a respiratory muscle synchronous motion module. The central processing module controls two valves to open or close, closing one valve while opening another valve, and controls the respiratory muscle synchronous motion module. The patient interface unit is connected to the positive pressure ventilation module and the negative pressure suction module, allowing positive or negative pressure airflow to flow by, depending on which valve is open, so as to allow airflow to flow in or out of the lung. The respiratory muscle synchronous motion module can employ nerve stimulation and mechanical pushing, and acts synchronously as the airflow moves, thereby simulating human coughing and achieves bionic expectoration.

Abstract: An intelligent bionic expectoration system and a three-way device thereof. The intelligent bionic expectoration system includes a negative pressure suction module, a central processing module, a patient interface unit and a respiratory muscle synchronous motion module. The central processing module controls two valves to open or close, closing one valve while opening another valve, and controls the respiratory muscle synchronous motion module. The patient interface unit is connected to the positive pressure ventilation module and the negative pressure suction module, allowing positive or negative pressure airflow to flow by, depending on which valve is open, so as to allow airflow to flow in or out of the lung. The respiratory muscle synchronous motion module can employ nerve stimulation and mechanical pushing, and acts synchronously as the airflow moves, thereby simulating human coughing and achieves bionic expectoration.