End-breathing gas measurement system and gas sampling accessories

Abstract

An end-respiratory gas measurement system and a gas sampling accessory (7). The end-respiratory gas measurement system includes a measurement host (2) and an air path switching device (1). The measurement host (2) includes a signal processing circuit (21), an air pump (221) and a gas measurement sensor (22), and the signal processing circuit (21) is electrically connected to the air pump (221) and the gas measurement sensor (22). The gas path switching device (1) includes a gas path interface (12) and an identification module (11). The measurement host (2) is connected to different gas sampling accessories (7) through the gas circuit interface (12), and the type of the gas sampling accessory (7) is identified through the identification module (11), and then the gas is measured by the signal processing circuit (21). The sensor (22) is controlled so that the working mode of the end-breathing gas measurement system is adjusted to the working mode of the gas sampling accessory (7). The end-respiratory gas measurement system is simple to use and convenient to operate, can meet various clinical applications by connecting various types of gas sampling accessories (7), and reduces clinical costs.

Description

technical field [0001] The invention relates to the field of gas measurement, in particular to an end-of-breath gas measurement system and a gas sampling accessory. Background technique [0002] The end-tidal gas measurement system is used to monitor the concentration or partial pressure of the gas (such as carbon dioxide) exhaled by a living body, and it is divided into a main flow type and a side flow type. For the side-flow end-tidal gas measurement system, one of the issues that usually needs to be considered in the design is: how to collect the condensed water generated after the saturated moisture in the patient's exhaled gas enters the environment, so as to prevent it from entering the measurement system and causing damage to the machine. [0003] The sidestream end-tidal gas measurement system uses an air pump and a specific gas sampling line to draw a very small amount of gas from the breathing circuit for measurement. The measured data can provide clear indicators ...

AI Technical Summary

Problems solved by technology

For the side-flow end-tidal gas measurement system, one of the problems that usually needs to be considered in the design is: how to collect the condensed water generated after the saturated moisture in the patient's exhaled gas enters the environment, so as to prevent it from entering the measurement system and causing damage to the machine

[0004] Clinically, in order to adapt to different application scenarios or consider the cost of clinical use, it is often necessary to purchase different equipment for use, resulting in complicated use and inconvenient operation

Or only use a single device (high flow measurement system or low flow measurement system), resulting in the problem that the cost of clinical application is too high or cannot be applied in some occasions

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