Adjustable exhalation valve for non-invasive ventilator

Abstract

The invention relates to an adjustable exhalation valve for a non-invasive ventilator. The adjustable exhalation valve comprises a valve body, wherein the lower end of the valve body is connected with a connecting tube; a tube joint is respectively arranged on each of the two ends of the connecting tube; a beam is arranged at the upper end of the valve body; a rotary shaft is arranged on the middle part of the valve body; a left valve plate and a right valve plate are hinged with the rotary shaft; the left valve plate is connected with the beam by a left spring; and the right valve plate is connected with the beam by a right spring. According to the adjustable exhalation valve for the non-invasive ventilator disclosed by the invention, the exhalation valve is arranged on a pipeline of the non-invasive ventilator, so that the gas rushes through the left and the right valve plates in the exhalation valve when the gas pressure in a mask is extremely large, and the left and the right valve plates are opened by rotating around the rotary shaft, and therefore, the ventilating purpose is achieved; when the gas pressure in the mask returns to the treatment pressure range, the left and the right valve plates are returned under the action of the spring, and therefore, the pressure in the mask is effectively enabled to be stable. Meanwhile, excessive gas, in particular carbon dioxide gas, in the mask can be timely exhausted out, so that the non-invasive positive pressure ventilating treatment effect of the mask is ensured.

Description

Technical field: [0001] The invention belongs to the technical field of non-invasive ventilators, in particular to an adjustable exhalation valve for non-invasive ventilators. Background technique: [0002] Chronic obstructive pulmonary disease is an important disease with high morbidity and mortality worldwide, causing serious economic and social burdens, and this burden is constantly increasing. Non-invasive ventilator is an important means to treat chronic obstructive pulmonary disease, especially combined with respiratory failure. A large number of facts have proved that non-invasive positive pressure ventilation with face mask is effective in treating chronic obstructive pulmonary disease with respiratory failure. Early use of non-invasive ventilator can improve hypoxia It can reduce the function damage of vital organs caused by carbon dioxide retention, alleviate dyspnea, and significantly reduce the use rate of endotracheal intubation and the mortality rate of patie...

AI Technical Summary

Problems solved by technology

The air leakage of the platform valve can be adjusted through the silicone membrane to achieve constant, but the silicone membrane on the platform valve may have problems such as reduced elasticity and adhesion after long-term use. It should be checked regularly and replaced in time, and its price is relatively expensive

[0005]The side hole valve leaks air through a hole of a fixed size. The amount of air leakage is mainly related to the pipeline pressure. The higher the pressure, the greater the amount of air leakage, so the leakage The volume of air cannot be controlled, and the sound of air leakage is often louder due to air leakage through a single hole, which affects the patient's rest

[0006]The silent valve is based on the side hole valve and increases the size of the air leakage hole to increase the area of ​​the air leakage. Although the noise generated during the air leakage is reduced, But the size of the air leakage can not be controlled

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