Respiration sampling instrument and method of sampling respiration
The technology of a sampler and sampling tube, which is applied in the field of breath sampler and diagnostic sampling device, can solve the problems of inconvenient use, limited scope of application, and discomfort of the examinee, and achieve the effects of simple structure, ensuring sampling accuracy, and convenient use
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Embodiment 1
[0022] The breathing sampler of the present embodiment is as figure 1 As shown, an L-shaped sampling tube 1 is included, and one end of the sampling tube is an exhalation port 11 and the other end is an air outlet port 12 . The exhalation port 12 of the sampling tube 1 is covered with a mouth 2 for the subject to blow (or cough), and the sampling tube 11 has two ports that only allow exhaled air to enter through the exhalation port 11 and then pass through the exhalation port 12. Diaphragm check valves 3 and 4 for discharge. Wherein, the membrane elasticity of the one-way valve 4 is greater than that of the one-way valve, so the opening pressure is higher, so that when the subject exhales, an appropriate high pressure greater than atmospheric pressure can be formed in the airflow channel between the two one-way valves.
[0023] Between the two one-way valves 3 and 4 in the sampling tube 1, there is an activated carbon adsorbent 5 distributed on a layered filter to form a samp...
Embodiment 2
[0026] The breath sampler of this embodiment is as figure 2 As shown, the differences from the first embodiment mainly include: the sampling tube 1 is a straight tube, and the mouth 2 is an L-shaped folded tube. The advantage of using a straight tube structure is that it is easy to take out the adsorbent in the tube, and it is more convenient to transport and store. In addition, the cross-section of the separation and retention device 5 in the sampling tube is honeycomb-shaped, so that the adsorbent therein can have a larger specific surface area, which is beneficial to the adsorption and collection of target substances. Substances such as microspheres and nanospheres are adsorbed on the surface of the separation and retention device 5 as adsorbents.
[0027] The respiratory sampler of this embodiment can be packed separately, so it is also equipped with two sealing caps for covering the exhalation port and the air outlet of the sampling tube. Before use, the sealing cap is...
Embodiment 3
[0030] The breath sampler of this embodiment is as image 3 As shown, different from the second embodiment, the mouth 2 is essentially a three-way, the upper port is the same as the second embodiment, and the sampling tube is inserted, and the lower port is inserted with an air suction pipe, which has Inhalation port 6 and air inlet 8, the inhalation port 6 communicates with the mouth 2, and the inhalation channel between the inhalation pipe from the inhalation port 6 to the air inlet 8 is provided with only allowing air flow to flow from the air inlet to the inhalation port. The two one-way valves 9 and 10 of the gas port are provided with a ventilation mixing device 7 between the two one-way valves, which can be used to load medicines or reactants that are helpful for testing. When in use, the subject first inhales the air containing the drug or reactant through the inhalation tube after holding his mouth, and then exhales it, so that the sample collected in this way will be...
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