Medical air control valve

Abstract

The invention discloses a medical pneumatic control valve. The medical pneumatic control valve comprises a valve body, wherein the valve body is provided with a gas outlet and a gas inlet. The medical pneumatic control valve also comprises a safety valve component, wherein the safety valve component comprises a safety valve body and a safety valve core; when the internal pressure of the valve body is higher than a set value, a gap can be reserved between the safety valve body and the safety valve core due to the gas pressure and pressure reduction is performed through the gap; a one-way valve is arranged at the gas outlet and comprises a gas-permeable plate and a one-way valve body; the gas-permeable plate is provided with a gas-permeable hole; the one-way valve body is provided with a first gas channel for outputting gas; when the gas flows out from the gas outlet, the one-way valve is opened and the gas-permeable hole is communicated with the first gas channel; and when the gas reversely flows, the one-way valve is closed, and the gas-permeable hole and the gas channel are blocked. According to the medical pneumatic control valve, the gas can flow in one direction by the aid of the one-way valve, and when the internal pressure is overhigh, the gas can be effectively exhausted to reduce the pressure by the aid of the safety valve. The medical pneumatic control valve has the advantages of higher structural manufacturability and excellent sealing property.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a medical air control valve. Background technique [0002] The anesthesia machine is a device that requires high safety, stability, and ease of operation in the operating room. It sends anesthetics into the patient's alveoli through a mechanical circuit to form a partial pressure of the anesthetic gas, which diffuses into the blood and directly affects the central nervous system. Inhibition occurs, thereby producing the effect of general anesthesia. The anesthesia machine mainly includes four parts: air supply system, vaporizer, ventilator and circuit system. [0003] The anesthesia vaporizer is an important component of the anesthesia machine, which provides a stable and precise concentration of anesthesia mixed gas to the patient through the anesthesia machine. It can effectively vaporize the anesthetic; it can also precisely control the output concentration of the anesthetic ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the following problems: 1) when there is pressure fluctuation at the gas outlet of the traditional medical air control valve, it will cause partial gas backflow phenomenon, which further leads to inaccurate output anesthetic gas concentration; 2) the traditional medical air control valve is used as the gas outlet Blockage occurs, or the intake pressure is too high, resulting in excessive internal pressure of the medical air control valve, the gas cannot be effectively removed, and there are safety hazards in use. 3) Traditional medical air control valves have structural and technological defects, and airtightness not good enough

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