| 摘要 |
The present invention relates to an apparatus and a method of analyzing constituents of gas in an oral cavity and exhaled breath. The apparatus for analyzing the constituents of gas in the oral cavity and exhaled breath according to the present invention includes a filter (110) that is filled with an adsorption and dehumidifying substance such as silica gel, calcium chloride, and activated carbon to filter the outside gas by adsorbing polar molecules and non-polar molecules in the outside air and by removing water in the outside air in order to use the outside gas as carrier gas; a first solenoid valve (120) that is connected to the filter 110 at an end thereof so as to provide carrier gas passing through the filter thereinto and controls a flow of the gas in the oral cavity or the exhaled breath flowing through a connection port (121) thereto; a second solenoid valve (130) that is connected through a connection tube (122) to the first solenoid valve (120) at a first port thereof, connected through a bypass tube (131) to a third solenoid valve (140) at a second port thereof so as to bypass the carrier gas, and connected to a sampling loop (132) filled with the gas in the oral cavity or the exhaled breath collected by the third solenoid valve (140) at a third port thereof; a fourth solenoid valve (150) that is connected through the connection tube (122) to the third solenoid valve 140); a fifth solenoid valve (160) that is connected through an upper bypass tube (161) provided with a speed controller to a port of the fourth solenoid valve (150); a column (162) that is connected to another port of the fourth solenoid valve (150) to allow the gas in the oral cavity or the exhaled breath and the carrier gas to sequentially flow therethrough; a sensor chamber (163) that is connected to the column (162) at an end thereof and has a sensor; a lower bypass tube (164) that is connected to another end of the sensor chamber (163) at an end thereof and to the fifth solenoid valve (160) at another end thereof and is provided with another speed controller; a pump (170) that is connected to the fifth solenoid valve (160) to draw the gas in the oral cavity or the exhaled breath and the carrier gas and then discharge the gas in the oral cavity or the exhaled breath and the carrier gas to the outside; a control unit (180) that is connected to the first to the fifth solenoid valves (120, 130, 140, 150, and 160), the sensor chamber (163), and the pump (170) to control the first to the fifth solenoid valves, the sensor chamber, and the pump; and a display device (190) that measures concentrations of the gases by using signal and calculation treatments in the control unit (180) to display results.
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