Anesthesia machine drive gas switching device

By designing a gas switching device for anesthesia machines and utilizing the structural design of the main valve body and valve core, rapid switching between the air and oxygen input valves and the driving gas output valves is achieved. This solves the problem that existing anesthesia machines are difficult to switch driving gases quickly, ensuring that the equipment can quickly switch to high-pressure air when high-pressure oxygen is scarce.

CN224748355UActive Publication Date: 2026-09-15SHENZHEN NORTHERN MEDITEC CO LTD
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Patent Information

Application Number
CN202522072960.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-26
Publication Date
2026-09-15
Estimated Expiration
2035-09-26

AI Technical Summary

Technical Problem

Existing anesthesia machines have difficulty quickly switching the type of driving gas, especially when high-pressure oxygen is scarce, they cannot quickly switch to high-pressure air.

Method used

An anesthesia machine drive gas switching device was designed. Through the structure of the second and third gas chambers in the main valve body, combined with the offset of the valve core and sealing ring, the air input valve and oxygen input valve are quickly connected and switched with the drive gas output valve. The pilot valve body and two-position three-way valve are used for electrical control switching.

Benefits of technology

It enables rapid switching of the type of driving gas, ensuring that the anesthesia machine can quickly switch to high-pressure air when high-pressure oxygen is scarce, thus ensuring normal operation of the equipment.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to medical instrument technical field especially anesthetic machine drive gas switching device, including main valve body, the inside of main valve body is opened with second gas cavity, the middle part of second gas cavity is opened with third gas cavity, the inside sliding installation of second gas cavity has the valve core, the periphery of valve core is opened with four sets of sealing ring, the outer wall of main valve body is installed with air input valve, oxygen input valve, drive gas output valve, drive gas output valve with second gas cavity is communicated with third gas cavity, air input valve with oxygen input valve is respectively with two ends of second gas cavity is communicated, this anesthetic machine drive gas switching device has solved the shortcoming that the prior art exists and is difficult to switch the drive gas kind quickly.
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