Handheld expiratory gas collection multi-parameter classification collection mechanism

Abstract

The invention provides a handheld expiratory gas collection multi-parameter classification collection mechanism which comprises a gas inhalation section, a gas detection section, a rotary valve and agas collection section which are connected in sequence; an exhaled gas passage can be formed between the gas detection section and the rotary valve, a sensor for detecting state parameters of exhaledgas is arranged on the gas detection section, the main processor is also arranged and used for controlling the rotary valve to rotate on the basis of the state parameters of the exhaled gas so as to change the on-off state of the gas passage, and when the gas passage is smooth, the exhaled gas is collected; and when the gas passage is blocked, the inhaled gas is not collected. According to the invention, the sensor transmits the state parameters of the detected inhaled gas to the main processor for judgment; compared with existing electromagnetic valve control, the mechanism has the advantagesthat the overall weight is light, miniaturization and modularization are enough, and the gas sampling device is suitable for being widely popularized in the technical field of gas sampling.

Description

technical field [0001] The invention relates to the technical field of exhaled gas detection, in particular to a handheld exhaled gas collection multi-parameter classification collection mechanism. Background technique [0002] From the perspective of human breathing, what people inhale is oxygen and what they exhale is carbon dioxide, but neither is pure gas. The air actually inhaled, depending on the individual situation, the exhaled air contains water vapor and carbon dioxide, and the exhaled air of most people also includes nitrogen, oxygen, inert gases and other components. As a way to reflect the health status of the human body, the breathed gas of the human body can reflect some important pathological symptoms, so the exhaled breath of the human body can be used for various medical diagnostic techniques including the analysis of the exhaled breath. [0003] Exhaled air is mainly composed of two parts, one is the "dead space gas" from the upper respiratory tract that ...

AI Technical Summary

Problems solved by technology

The "Alveolar Exhaled Gas Collection Device" whose announcement number is CN207779768U can blow gas into the air bag, and complete the experiment of large samples through repeated blowing results. It cannot effectively distinguish "dead space gas" and "alveolar gas", and practical application The effect is not good, and the notification number adopted by the prior art is CN 110226931 A "A kind of exhalation analysis device and its use method". This "three-way valve", "first valve", "second valve" and other multiple valve control , to ensure the switching of different states of the air circuit, but various solenoid valves with larger diameters generate more heat, and the overall weight is also large, which is inconvenient to carry, not lightweight and miniaturized.

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