Novel HP (helicobacter pylori) detector

Abstract

The invention relates to the technical field of HP (helicobacter pylori) testers and gas separation, in particular to an HP detector integrating a CO2 concentration device and a GM tube (Geiger-Mullercounter tube). The detector comprises a small compressor, a filter, the CO2 concentration device and a GM tube testing space, wherein the compressor pressurizes respiratory air of a subject and sendsthe respiratory air to the filter, the filter filters out liquid water mixed in the respiratory air and sends the respiratory air to the CO2 concentration device for CO2 concentration, and the purified respiratory air enters the GM tube testing space for <14>C content testing. The method for detecting HP by use of the detector is simple and convenient; compared with the prior art, the detector has the advantages that the detection sensitivity is higher, the signal-to-noise ratio is notably superior to plug-in card type 'signal-to-noise ratio', the detector is simple in structure, convenient to use, green, environmentally friendly, free of cross contamination and the like, and is the world's first HP detector integrating the membrane separation technique and a GM method.

Description

technical field [0001] The invention relates to the technical field of HP tester and gas separation, in particular to a CO 2 Helicobacter pylori detection instrument integrated with concentration device and GM tube (Geiger-Müller counter tube). Background technique [0002] Currently, in urea【 14 C] There are two main types of HP testers in the breath test, one is the liquid flash HP tester, and the other is the card-type HP tester, both of which have certain shortcomings in actual use. [0003] The liquid flash HP tester has the following disadvantages: [0004] 1. Since the liquid flash test requires the subject to inject CO into the bottle through a blowing tube 2 Blowing the absorbent may easily cause the absorbent to splash out or the subject may inadvertently inhale the absorbent during ventilation and cause injury; [0005] 2. The test process of the liquid flash test method is complicated. [0006] The plug-in HP tester has the following disadvantages: [0007]...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the liquid flash test requires the subject to inject CO into the bottle through a blowing tube 2 Blowing the absorbent may easily cause the absorbent to splash out or the subject may inadvertently inhale the absorbent during ventilation and cause injury;

[0005] 2. The test process of the liquid flash test method is complicated

[0007] 1. Due to the limitation of the working principle of the air blowing card, only the Li on the surface of the card 2 CO 3 of 14 C valid, below the surface 14 The beta rays emitted by C are absorbed by Li 2 CO 3 Blocked by particles, and due to the blockage of the outer film of the card, the effective β-rays that can enter the mica window are very small, resulting in low sensitivity of the plug-in card test, and low detection efficiency or even missed diagnosis;

[0008] 2. The card-type HP tester requires the subject to blow air to the gas-collecting card. Since the LiOH particles in the gas-collecting card are attached to the non-woven fabric, it is easy to blow away the LiOH particles to affect the test effect or suck back due to ventilation. LiOH particles burned the subject's mouth;

[0009] 3. Due to the complex production process of the air blowing card, the air blowing card itself is a plastic product, and needs to consume LiOH chemical reagents. In addition, a large number of air blowing cards after measurement need to be disposed of, which brings a certain pressure on environmental protection

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