Parallel collection device for VOCs and EBCs in exhaled air from human body

A technology for exhaled gas and collection devices, which is applied in the field of biomedical engineering, can solve the problems of lack of standard control and integrated instruments for collection methods, and achieve the effects of perfect parameter setting, increase the number, and prevent pollution and interference

Inactive Publication Date: 2016-07-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, some studies have carried out comprehensive analysis on VOCs and EBCs, but most of them are collected separately, and there is a lack of standard control and integrated instruments in the collection methods

Method used

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  • Parallel collection device for VOCs and EBCs in exhaled air from human body
  • Parallel collection device for VOCs and EBCs in exhaled air from human body
  • Parallel collection device for VOCs and EBCs in exhaled air from human body

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0026] like figure 1 As shown, the present invention mainly includes: air blowing device 1, telescopic two-stage columnar gas storage chamber 2, carbon dioxide sensor 3, first micro vacuum pump 4, enrichment tube 5 filled with adsorbent, mass flow meter 6, second Miniature vacuum pump 7, total control circuit 8, heating belt 9, key module 10, display module 11, gas condensation device 12; The gas outlet 25 is connected to the gas condensing device 12; the first gas collection port 27 of the gas storage chamber 2 is connected to the carbon dioxide sensor 3, and the second gas collection port 28 of the gas storage chamber 2 is connected to one end of the enrichment pipe 5; the carbon dioxide sensor 3 is connected to the The first micro-vacuum pump 4 is connected to keep a constant collection rate during the collection process; the other end of the enr...

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Abstract

The invention discloses a parallel collection device for VOCs and EBCs in exhaled air of a human body, and the VOCs and the EBCs can be collected simultaneously.The exhaled air is divided into three ways through an embedded type air storage chamber to pass through a carbon dioxide sensor, a VOCs enrichment tube and an air condensation device respectively.The VOCs in the exhaled air are collected by means of the enrichment tube filled with an adsorbing agent, the EBCs in the exhaled air are collected by means of the air condensation device, the flow velocity of the exhaled air flowing through the enrichment tube is controlled by a mass flowmeter, the concentration of carbon dioxide in the exhaled air is detected through a carbon dioxide sensor, a corresponding dynamic threshold is combined to determine non-metabolic cavity air in the exhaled air.The air collecting process is monitored through a single chip microcomputer circuit.The parallel collection device for the VOCs and the EBCs in the exhaled air of the human body is small in size, low in cost, portable and capable of parallelly collecting the VOCs and the EBCs in the exhaled air of the human body in various occasions rapidly and reliably.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering, in particular to a parallel collection device for volatile organic compounds (Volatile Organic Compounds, VOCs) in human exhaled gas and human exhaled gas condensate (Exhaled Breath Condensates, EBCs), which can simultaneously collect VOCs in exhaled gas in parallel and EBCs. Background technique [0002] At present, there are a large number of researches on exhaled gas at home and abroad, mainly focusing on the fields of VOCs and EBCs. The collection methods of VOCs mainly include air bag collection, enrichment tube collection, etc.; the collection of EBCs mainly uses the condensation device to condense the exhaled gas and collect the condensate. [0003] In terms of VOCs collection, there are currently some marketed instruments, but there are generally some deficiencies. Some instruments use airbags to collect, the enrichment ability of active ingredients is not strong, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24
CPCG01N1/24
Inventor 王平郎朗邹莹畅张希高凡盛佳靖张旭升吴谦
Owner ZHEJIANG UNIV
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