Medical gas pressure alarm

Abstract

The invention provides a medical gas pressure alarm. The medical gas pressure alarm comprises an oxygen source, a gas storage tank and a two-position and two-way valve, wherein two paths of gas is guided out of the oxygen source through a pipeline, one path of gas is directly connected with a control valve opening of the two-position and two-way valve, the other path of gas is connected with an air inlet of the gas storage tank through a one-way valve, and an air outlet of the gas storage tank is connected with an air inlet of the two-position and two-way valve;an air outlet of the two-position and two-way valve is connected with an alarm, the alarm comprises a cylinder-shaped shell with a cavity inside, and the shell is formed by clamping an upper shell body and a lower shell body; a pinhole spray nozzle is arranged at one end of the shell, a cylinder-shaped sound adjusting tube is arranged at the other end in the shell, a trumpet-shaped air mixing cavity is formed between the pinholespray nozzle and the sound adjusting tube, a wide-mouth end of the trumpet-shaped air mixing cavity faces the sound adjusting tube, a narrow-mouth end of the trumpet-shaped air mixing cavity faces the pinhole spray nozzle, and an air inlet of the pinhole spray nozzle is connected with the air outlet of the two-position and two-way valve.

Description

technical field [0001] The invention belongs to the field of medical equipment manufacturing, and relates to an anesthesia machine system structure, in particular to a gas pressure alarm device for an anesthesia machine. Background technique [0002] Anesthesia machines are mainly used clinically for inhalation anesthesia. The gas sources used in the anesthesia machine mainly include oxygen, air and nitrous oxide gas. Among these three gases, oxygen is the most important gas to maintain the life of the patient. Therefore, the oxygen source must maintain sufficient air pressure, so the anesthesia machine requires an oxygen low pressure alarm device. . There are two kinds of alarm methods at present, namely electronic alarm and pneumatic alarm. The electronic alarm usually uses a loudspeaker to emit an alarm sound, and the sound is pleasant, but in the anesthesia machine system, related circuits and components need to be set separately, which increases the complexity of the ...

AI Technical Summary

Problems solved by technology

Electronic alarms usually use loudspeakers to send out alarm sounds, which are pleasant to the ear, but in the anesthesia machine system, relevant circuits and components need to be set separately, which increases the complexity of the system and increases the cost

Pneumatic alarm requires an alarm time of not less than 7 seconds; most of the current pneumatic alarm technology uses the gas used in the anesthesia system to store high-pressure gas through the gas storage tank. When the oxygen source pressure is too low, the high-pressure gas in the gas storage tank passes through a The pinhole directly blows a whistle, which has a simple structure and low cost, but the sound is very harsh and affects the work of medical staff

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