An elderly man who suffered from nasopharyngeal cancer and was bedridden for a long time also benefited from the sputum machine. Due to long-term aspiration pneumonia, sputum is thick and abundant, and he is unable to discharge sputum, and there is a serious risk of phlegm. In the intensive care unit, his inflammatory markers were under control, but the fluid at the bottom of his lungs was difficult to remove.

However, after using the sputum dispenser, the old man's condition has improved significantly. With just one small set of parameters and several (+2.5, -3.5) parameter Settings, he coughed up thick sputum. The change surprised the medical staff and allowed him to be transferred out of the intensive care unit.

Non-invasive expectoration machine is a new type of expectoration equipment, the following is a detailed introduction of the non-invasive expectoration machine:

First, the working principle

The non-invasive expectoration machine mainly uses the principle of vibration or the principle of positive inspiratory pressure and negative expiratory pressure of medical physiology to easily discharge the sputum or foreign body that has been fibrosis in the lungs or is difficult to discharge due to muscle weakness through external non-invasive gravity or air turbulence. Specifically, the sputum expectorator exerts a high positive pressure during the inhalation, so that the lungs are filled and expanded, and the respiratory tract endocrine substances are loosened. It then switches to negative pressure, using the output gas from the lungs and the difference in expiratory pressure between the duct and the alveoli to promote the secretion of substances in the respiratory tract to the atmospheric tract, and finally successfully clearing the respiratory tract.

2. Scope of application

The non-invasive sputum expectorator is widely used in clinical practice, especially for the following patients:

Patients with lung diseases such as bronchiectasis, pneumonia, and lung abscess, which often result in increased sputum that is difficult to cough up.

Patients with cerebrovascular accident, craniocerebral trauma, brain tumor and other causes of phlegm is not easy to cough up.

Patients with acquired asthenia in the intensive care unit, such patients have difficulty expectorating spontaneously due to their severe condition, impaired cough reflex, and respiratory muscle weakness.

Third, advantages and characteristics

Efficient expectoration: The non-invasive expectoration machine can penetrate deep into the lungs, effectively clear secretions deep in the airway, reduce sputum retention, and reduce the risk of lung infection.

Non-invasive and safe: Compared with traditional sputum aspiration methods, non-invasive sputum expectorators do not require tracheal intubation or sputum aspiration operations, reducing patient pain and the risk of airway damage.

Simulate physiological cough: The expectorant machine simulates the normal cough reflex of the human body through the rapid switch of positive and negative pressure to reduce the pain of expectoration.

Easy operation: The non-invasive expectoration machine is simple and convenient to operate, with memory function, and can retrieve the patient's expectoration records at any time, which is convenient for the treatment and diagnosis of patients.

Enhance lung function: The phlegm machine can also assist patients with deep breathing training, help lung expansion, prevent local atelectasis, and enhance lung function.

4. Precautions

When using the non-invasive expectoration machine, the frequency and amplitude of vibration need to be adjusted under the guidance of the doctor, or personalized according to the specific situation of the patient, to ensure the safety and effectiveness of the treatment.

In the process of use, medical personnel should closely observe the changes in the patient's condition and adjust the treatment plan in time.

Some patients, such as pulmonary bulla, pneumothorax or mediastinal emphysema, acute lung injury (ALI)/acute respiratory distress syndrome (ARDS), severe heart disease and hemodynamic instability, should be relatively contraindicated.

To sum up, the non-invasive sputum expectoration machine with its high efficiency, non-invasive, safe characteristics, in clinical practice for patients to provide a better solution of expectoration.