CN116008532A - Real-time stool detection device for reaction reagent transfer through position switching - Google Patents

Abstract

The invention provides a fecal immediate detection device for realizing reactant transfer through position switching, which comprises: a device body having a sealed cavity in which a test paper is accommodated; the reagent tube is inserted into the sealing cavity and is a hollow tube body; the sampling rod is in sealing connection with the second opening of the hollow tube body, the sampling rod comprises a rod body, the first end of the rod body is provided with a fecal accommodating structure, the fecal accommodating structure is provided with a first position and a second position, when the fecal accommodating structure is positioned at the first position, the fecal accommodating structure is positioned in a reaction reagent in the reagent tube, and when the fecal accommodating structure is positioned at the second position, the fecal accommodating structure can puncture the sealing structure so that the reaction reagent flows into the sealing cavity through the flow passage. The user of the invention adopts the sampling rod to sample and then inserts the sampling rod into the reagent tube, and realizes the transfer of the reaction reagent and the detection by switching the fecal accommodating structure from the first position to the second position, and the quantification of the sample liquid entering the sealing cavity is realized by the displacement and the movement amount from the first position to the second position.

Description

Real-time stool detection device for reaction reagent transfer through position switching

technical field

The invention belongs to the technical field of instant detection, and in particular relates to a stool instant detection device which realizes the transfer of reaction reagents through position switching.

Background technique

With the improvement of people's living standards and the development of biotechnology, people's pursuit and concern for health have become more prominent. As one of the three major routine tests, feces testing is an "alarm" for various digestive tract diseases. Recently, Helicobacter pylori has aroused people's vigilance, mainly because the risk of gastric cancer in its infected patients can increase by 4 to 6 times compared with the normal population, and the infection rate in our country exceeds 50%. The detection method is to detect Helicobacter pylori through feces, the accuracy rate can reach more than 98%, and it has broad application prospects in the future.

Existing feces detection methods, such as colloidal gold, have the advantages of convenient operation, rapid detection, and satisfying self-testing at home, but have the disadvantages of difficult sampling, quantification and complicated device operation.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to provide an instant feces detection device that realizes the transfer of reaction reagents through position switching, so as to overcome the shortcomings of the prior art that the device operation is relatively complicated during feces detection.

In order to solve the above problems, the present invention provides a stool instant detection device, comprising:

The main body of the device, the main body of the device is configured with a sealed cavity, and a detection test paper is placed in the sealed cavity, and the sealed cavity has a first opening;

A reagent tube, which contains a reaction reagent, and the reagent tube is inserted into the sealed cavity through the first opening, and the reagent tube is a hollow tube body, and the first part of the hollow tube body The end has a sealing structure, and the second end of the hollow pipe body is a second opening;

The sampling rod is sealingly connected with the second opening, the sampling rod includes a rod body, the first end of the rod body is configured with a feces accommodating structure, and the feces accommodating structure is configured with an overflow channel, and the feces accommodating structure The holding structure has a first position and a second position, when the stool holding structure is in the first position, the stool holding structure is in the reaction reagent in the reagent tube, when the stool holding structure When the placement structure is in the second position, the feces accommodating structure can pierce the sealing structure so that the reaction reagent in the reagent tube flows into the sealing cavity through the overflow channel, and the sealing The structure is in sealing contact with the rod body, the inlet of the overflow channel is in the reagent tube, and the outlet of the overflow channel is in the sealed cavity.

In some embodiments, the rod body has a sealing connection section, and the sealing connection section is in sealing connection with the second opening when the fecal accommodating structure is inserted into the reagent tube.

In some embodiments, the hollow tube body is also configured with a scraper extending from outside to inside along its radial direction. When the feces containing structure is inserted into the reagent tube, the scraper can Scrape away excess feces contained in the feces accommodating structure; and/or, the side of the sealed connection section away from the feces accommodating structure has a handle.

In some embodiments, the reagent tube is snap-fitted to the first opening; and/or, the sealing structure is a sealing flexible film.

In some embodiments, the area of the sealed cavity corresponding to the reagent tube is the second area, and the remaining area of the sealed cavity is the first area, and the detection test paper is located in the first area, and the device Based on the orientation in use, the bottom wall of the sealed cavity has a drainage surface, and the sample liquid flowing out of the reagent tube flows from the second area to the first area under the action of the drainage surface.

In some embodiments, the instant stool detection device further includes a test paper fixing plate inserted in the first area, and the detection test paper is fixed on the test paper fixing plate.

In some embodiments, the test paper fixing plate has an assembly groove, and a desiccant is assembled in the assembly groove.

In some embodiments, the second opening of the reagent tube has an assembling fitting structure, and the assembling fitting structure includes guiding grooves configured on the inner wall of the second opening, and the guiding grooves include parallel to each other. The first vertical groove, the second vertical groove and the first horizontal groove connecting the bottom end of the first vertical groove and the top end of the second vertical groove, the extending direction of the groove body of the first vertical groove is the same as that of the first vertical groove The insertion direction of the sampling rod is the same and runs through the end surface of the assembly fitting structure away from the sealed cavity. The sampling rod has a guide protrusion, and the guide protrusion fits into the guide groove.

In some embodiments, the assembly structure further includes a positioning groove configured on the inner wall of the second opening, and the sampling rod has a positioning protrusion, and the positioning protrusion is adapted to the positioning groove. match.

In some embodiments, the guide groove further includes a second transverse groove, the second transverse groove is parallel to the first transverse groove and one end of the second transverse groove communicates with the second vertical groove, The second transverse groove fits with the positioning protrusion.

The present invention provides a feces instant detection device that realizes the transfer of reaction reagents through position switching. When performing detection, the user uses a sampling rod to take a sample and then inserts it into the reagent tube and passes the feces accommodating structure from the first position to the second position. Switching realizes the transfer of reaction reagents and completes the detection. The operation does not involve the assembly of multiple parts and professional operations such as pipetting. The operation is simple and convenient, and there are fewer assembled parts, which can reduce production costs. In the second position, The inlet and outlet of the overflow channel are respectively located in the reagent tube and the sealed cavity, and rely on the displacement from the first position to the second position to realize the quantification of the sample liquid entering the sealed cavity, thereby enabling the detection of the subsequent test paper The result is more accurate.

Description of drawings

FIG. 1 is a schematic diagram of the appearance of a real-time stool detection device according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the stool instant detection device in Fig. 1;

Fig. 3 is a schematic diagram of the internal structure of the device main body in Fig. 2;

Fig. 4 is a schematic diagram of the appearance structure of the reagent tube in Fig. 2;

Figure 5 is a top view of Figure 4;

Fig. 6 is a schematic diagram (section) of the internal structure of the reagent tube in Fig. 2;

Fig. 7 is a schematic diagram of the appearance structure of the sampling rod in Fig. 2;

Fig. 8 is a schematic structural view of the test paper fixing plate in Fig. 2;

Figure 9 is a top view of Figure 8;

FIG. 10 is a schematic structural diagram of assembling the test paper and desiccant on the test paper fixing board in FIG. 2 .

The reference signs are indicated as:

1. Device main body; 11. Sealing cavity; 12. Drainage surface; 13. Card slot; 2. Test paper; 3. Reagent tube; 31. Scraping plate; 321. First vertical slot; 322. Second vertical slot; , the first horizontal groove; 324, the second horizontal groove; 33, the positioning groove; 34, the second airtight ring groove; 341, the second sealing ring; 35, the third sealing ring; 351, the third airtight ring groove 36. Sealing structure; 37. Buckle; 4. Sampling rod; 41. Rod body; 411. The first airtight ring groove; 412. The first sealing ring; , handheld part; 47, guide protrusion; 48, positioning protrusion; 51, test paper fixing plate; 511, assembly slot; 512, test paper card slot; 52, desiccant; 100, first area; 102. The first ventilation channel; 103. The second ventilation channel.

Detailed ways

Referring to Fig. 1 to Fig. 10, according to an embodiment of the present invention, a stool instant detection device is provided, comprising: a device main body 1, the device main body 1 is configured with a sealed cavity 11, and a detection test paper 2 is placed in the sealed cavity 11, The sealed chamber 11 has a first opening; the reagent tube 3 contains a reaction reagent, and the reagent tube 3 is inserted into the sealed chamber 11 through the first opening, and the reagent tube 3 is a hollow tube body, the hollow tube body The first end has a sealing structure 36, and the second end of the hollow pipe body is a second opening; the sampling rod 4 is sealed and connected with the second opening, and the sampling rod 4 includes a rod body 41, and the first end of the rod body 41 is configured with a fecal accommodating Structure 42, the stool holding structure 42 is configured with an overflow channel 421, the stool holding structure 42 has a first position and a second position, when the stool holding structure 42 is in the first position, the stool holding structure 42 is in the reagent tube Among the reaction reagents in 3, when the feces accommodating structure 42 is in the second position, the feces accommodating structure 42 can pierce the sealing structure 36 so that the reaction reagent in the reagent tube 3 flows into the sealed cavity 11 through the overflow channel 421, And the sealing structure 36 is in sealing contact with the rod body 41 to prevent the sample liquid from entering the sealed cavity 11 from the piercing position. The inlet of the overflow channel 421 is in the reagent tube 3, and the outlet of the overflow channel 421 is in the sealed cavity 11. When the rod 4 is in the unsampling state, it is inserted into the second opening to form a seal on the second opening, preventing the leakage of the reaction reagent in the reagent tube 3, and when the sampling rod 4 is used for sampling, the user puts the sampling rod 4 Pull out from the second opening and take a sample. After sampling, insert the sampling rod 4 again at the second opening so that the feces containing structure 42 is in the first position, and the feces containing structure 42 is immersed in the reaction to fully react, and the reaction is completed. Afterwards, the user switches the feces holding structure 42 to the second position, and the reaction reagent enters the sealed chamber 11 through the overflow channel 421 and contacts with the detection test paper 2 in it for chromatography to achieve the purpose of detection. In this technical solution, when performing detection, the user uses the sampling rod 4 to take a sample and then inserts it into the reagent tube 3 and realizes the transfer of the reaction reagent and completes the detection by switching the feces containing structure 42 from the first position to the second position. The operation does not involve the assembly of multiple parts and professional operations such as pipetting. The operation is simple and convenient, and there are fewer assembled parts, which can reduce production costs. More importantly, in the second position, the flow channel 421 The inlet and outlet are located in the reagent tube 3 and the sealed cavity 11 respectively, and rely on the displacement from the first position to the second position to realize the detection of the sample liquid (that is, the mixture of the reaction reagent and the sample) entering the sealed cavity 11 Quantitatively, and then can make the detection result of the subsequent detection test paper 2 more accurate.

The aforementioned flow channel 421 can specifically drill a blind hole along the axial direction of the rod body 41 and then drill its corresponding inlet and outlet from the side of the rod body 41. The mouth is filled and closed to prevent the sample from entering into it during sampling, which will cause the problem of large quantitative deviation of sampling.

In a specific embodiment, the rod body 41 has a sealed connection section. When the feces containing structure 42 is inserted into the reagent tube 3, the sealed connection section is sealed with the second opening, as shown in FIG. 7 , the sealed connection There are multiple circles of first airtight ring grooves 411 on the outer peripheral wall of the rod body 41 corresponding to the corresponding section, and first sealing rings 412 are respectively sleeved therein, which are in elastic sealing contact with the inner wall of the second opening to realize sealing, thereby The gas in the reagent tube 3 can be compressed more reliably and stably when the sampling rod 4 is switched from the first position to the second position, so that the reaction reagent in the reagent tube 3 can flow out accurately and quantitatively into the sealed cavity 11 . It should be noted that the sealed connection section at this time will force the sample solution in the reagent tube 3 to enter the sealed cavity 11 through the overflow channel 421 in the form of injection during the position switching process, and when the sampling rod 4 is switched to the second In the second position state, since the sampling rod 4 is no longer pushed down and moved, the sample liquid in the reagent tube 3 lacks the drive of the necessary compressed gas at this time, and the sample liquid no longer enters the sealed cavity 11 through the overflow channel 421. In this state, the liquid level of the remaining sample liquid in the reagent tube 3 is above the inlet of the overflow channel 421 .

Referring to Fig. 6, a scraper 31 extending radially from the outside to the inside of the hollow tube is also configured. When the feces holding structure 42 is inserted into the reagent tube 3, the scraper 31 can hold the feces. The excess feces accommodated by the placement structure 42 is scraped off, so that the quantitative sampling of the feces sample can be realized, and the amount of feces sampled is matched with the preloaded amount of the reagent (2mL in a specific embodiment), so as to ensure the accuracy of the detection result . In a specific embodiment, the maximum outer diameter of the feces holding structure 42 is not greater than the outer diameter of the rod body 41, the scraper 31 is a ring structure, and the central through hole diameter of the ring structure is equal to the outer diameter of the rod body 41, so , when the feces holding structure 42 passes through the aforementioned central through hole, the central through hole of the ring structure will scrape off the unnecessary part attached to the outer periphery of the feces holding structure 42 and retain it on the outside of the scraping plate 31 (that is, away from the feces. One side of the accommodating structure 42), the structural design is simple and convenient.

The specific design of the feces containing structure 42 can be varied, for example, the feces containing structure 42 is a rectangular groove arranged along the circumferential array of the rod body 41; Or, the feces holding structure 42 is a spoon body with a sharp angle extending along the axial direction of the rod body 41, which is convenient for inserting the feces into the sharp angle structure for sampling. Similarly, the volume of each stool holding structure 42 is based on sample requirements. The volume can be reasonably designed.

In order to prevent the sample liquid (the mixture of reaction reagent and sample) from leaking from the gap between the reagent tube 3 and the cavity wall of the device main body 1, in a preferred solution, the outer peripheral wall of the reagent tube 3 is configured with a second airtight ring The groove 34 is overlaid with a second sealing ring 341 .

In a specific embodiment, the snap connection between the reagent tube 3 and the first opening is specifically shown in Figure 3 and Figure 4, and a corresponding slot 13 is configured on the first opening, correspondingly in the reagent tube 3. There is a buckle 37 on the corresponding outer wall, and the reliable and convenient connection between the reagent tube 3 and the device main body 1 is realized through the snap fit between the buckle 37 and the groove 13 .

The sealing structure 36 is a sealing flexible membrane, for example, it can be a silicone diaphragm pasted on the first end of the hollow tube body, so that when the sampling rod 4 is switched from the first position to the second position, that is, the feces accommodating structure After the tip of the end of 42 pierces the silicone membrane, the silicone membrane will use its own elastic force to closely fit the outer circumference of the rod body 41 to form a seal, preventing the sample solution in the reagent tube 3 from entering the sealed cavity through the piercing gap. 11 to ensure the quantitative entry of the sample liquid through the overflow channel 421 .

It can be understood that the sealed cavity 11 has a vent hole, and a breathable hydrophobic film is arranged in the vent hole to realize the smooth flow of the liquid in the sealed cavity 11 while preventing the liquid from flowing out of the sealed cavity 11. The aforementioned vent hole can be constructed, for example, by The first ventilation channel 102 on the device main body 1 and the second ventilation channel 103 configured at the top of the reagent tube 3 are jointly formed.

In order to be able to check the test results of the detection test paper 2 in the device main body 1 conveniently, the device main body 1 should have an observation structure, such as an observation window. In a preferred embodiment, the device main body 1 is made of transparent materials such as PP plastics. , thus simplifying the structural design of the device main body 1 .

2 and 3, the area of the sealed cavity 11 corresponding to the reagent tube 3 is the second area 101, the remaining area of the sealed cavity 11 is the first area 100, and the detection test paper 2 is in the first area 100, so that The orientation of the device in use shall prevail. The bottom wall of the sealed chamber 11 has a drainage surface 12, and the sample liquid flowing out of the reagent tube 3 flows from the second area 101 to the first area 100 under the action of the drainage surface 12. The aforementioned drainage The surface 12 is specifically a slope whose height is lower and lower from the second area 101 to the first area 100 side, and guides and collects a quantitative and a small amount (300 microliters in a specific embodiment) of the sample solution to the first area 100 The purpose of contact chromatography with the detection test paper 2, the detection result is more accurate.

Referring to Fig. 2 and Fig. 8, the stool instant detection device also includes a test paper fixing plate 51, which is inserted in the first area 100, and the detection test paper 2 is fixed on the test paper fixing plate 51, so that the detection test paper 2 is in the sealed chamber 11. In a specific embodiment, there is a test paper slot 512 on the test paper fixing plate 51. In a specific application, it is enough to insert the detection test paper 2 into the test paper slot 512. FIG. 8 shows Two test paper card slots 512, so that one test paper 2 can be inserted in the two test paper card slots 512 respectively, and the test items of the two test paper cards 2 can be different. 2 and 9, the test paper fixing plate 51 also has an assembly groove 511, and a desiccant 52 is assembled in the assembly groove 511, and the assembly position of the desiccant 52 is determined according to the volume of the sample liquid required for detection of the test paper 2. When the volume of the sample liquid entering the first region 100 exceeds the preset volume, the excess sample liquid will be absorbed by the desiccant 52 , which further ensures the accuracy of the detection result.

Referring to Fig. 4 to Fig. 7, the second opening of the reagent tube 3 has an assembly fitting structure (not labeled in the figure), and the assembly fitting structure includes a guide groove configured on the inner wall of the second opening, and the guide groove It includes the first vertical groove 321, the second vertical groove 322 arranged parallel to each other, and the first horizontal groove 323 connecting the bottom end of the first vertical groove 321 and the top end of the second vertical groove 322. The groove body of the first vertical groove 321 extends The direction is consistent with the insertion direction of the sampling rod 4 and penetrates the end face of the side of the assembly and fitting structure away from the sealing chamber 11. The first horizontal groove 323 is arranged perpendicular to the first vertical groove 321 and the second vertical groove 322. The sampling rod 4 has a guide The protrusion 47, the guide protrusion 47 is adapted to the guide groove, specifically, the sampling rod 4 inserts the fecal accommodating structure 42 into the second opening after sampling, and further aligns the guide protrusion 47 with the first The vertical groove 321 is aligned and inserted downward along the axial direction of the reagent tube 3. Due to the blocking of the bottom end of the first vertical groove 321, the sampling rod 4 is in the first position above. The reagent is fully exposed to the reaction, and after waiting for a certain reaction time, the user continues to rotate and apply force to the sampling rod 4 to make the guide protrusion 47 horizontally deflect at a certain angle (for example, 45°, the specific angle is determined by the first vertical groove 323) along the first horizontal groove 323. 321 and the distance between the second vertical groove 322), when the guide protrusion 47 enters the second vertical groove 322, it can further move downward along the vertical guiding direction of the second vertical groove 322 until it is in the second vertical groove The bottom end of the groove 322 prevents further downward movement, thereby reaching the second position. At this time, the feces holding structure 42 pushes the sealing structure away, and the sample liquid enters the sealing cavity 11 to realize subsequent detection. The axial force and the circumferential force of the rod 4 realize the switching between the first position and the second position, and the operation is simple and convenient.

In some embodiments, the assembly fitting structure also includes a positioning groove 33 configured on the inner wall of the second opening, and the sampling rod 4 has a positioning protrusion 48, and the positioning protrusion 48 is adapted to the positioning groove 33, so that it can pass The matching buckle between the positioning protrusion 48 and the positioning groove 33 realizes the relative stability of the position of the sampling rod 4 relative to the reagent tube 3, preventing the user from accidentally touching the sampling rod 4 from the first position to the second position, and it can be understood that What is more important is that the strength of the combination of the positioning protrusion 48 and the positioning groove 33 should be able to meet the user's requirement that the user can disengage the combination by applying axial force, so as to facilitate the switching of the position of the sampling rod 4, and the adjustment of the aforementioned combination strength It can be realized by designing the protrusion height of the positioning protrusion 48 and the concave depth of the positioning groove 33 .

In some embodiments, the guide groove further includes a second transverse groove 324, the second transverse groove 324 is parallel to the first transverse groove 323 and one end of the second transverse groove 324 communicates with the second vertical groove 322, and the second transverse groove 324 Adapt to the positioning protrusion 48, specifically, when the sampling rod 4 is switched to the second position, the positioning protrusion 48 will be in the second transverse groove 324, so that the sampling rod 4 will not move along the reagent in this position. The axial movement of the pipe 3 makes the positions of the two more stable and reliable.

A third air-tight ring groove 351 is also formed at the bottom end surface of the assembly fitting structure, and a third sealing ring 35 is inserted therein to realize the sealing of the top fitting position between the reagent tube 3 and the device main body 1 .

The use process of the stool instant detection device of the present invention is described as follows:

After the user uses the sampling rod 4 to take a sample, when the feces containing structure 42 is inserted into the scraper 31 inside the reagent tube 3, the excess feces samples remain above the scraper 31 (the orientation shown in Figure 2 is for reference), and will not enter the reagent below In order to achieve quantitative sampling, the guide protrusion 47 on the sampling rod 4 enters the first vertical groove 321 and is pushed to the bottom end of the first vertical groove 321 along the axial direction of the reagent tube 3. At this time, the positioning protrusion 48 and The positioning groove 33 is combined to form a positioning. At this time, the sampling rod 4 is in the first position. After the sample and the reaction reagent are fully mixed, the user rotates the sampling rod 4 at a certain angle (for example, 45°), and the sampling rod 4 is guided in the first horizontal groove 323. down into the top of the second vertical groove 322, and then push down again along the axial direction of the reagent tube 3 towards the end where the feces accommodating structure 42 is located, the sampling rod 4 is switched to the second position, and the lower end of the sampling rod 4 passes through the seal structure 36, the sample liquid in the reagent tube 3 flows into the overflow channel 421 through the inlet of the overflow channel 421, and then flows out from the outlet to the second area 101 below, enters the first area 100 under the guidance of the drainage surface 12 and is in contact with the The detection test paper 2 in the first area 100 is contacted with chromatography, and the results can be directly observed through the outer window (such as a wall made of transparent material). The sample liquid above the inlet of the flow channel 421 will flow into the second region 101 , while the part below the inlet is kept in the reagent tube 3 , thereby realizing the quantitative control of the sample liquid in contact with the test paper 2 .

Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned advantageous modes can be freely combined and superimposed.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Inside. The above are only preferred embodiments of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (10)

1. A stool instant detection device that realizes the transfer of reaction reagents by position switching, it is characterized in that, comprising: The device main body (1), the device main body (1) is configured with a sealed cavity (11), and a detection test paper (2) is placed in the sealed cavity (11), and the sealed cavity (11) has a first opening; A reagent tube (3), which contains a reaction reagent, the reagent tube (3) is inserted into the sealed cavity (11) through the first opening, and the reagent tube (3) is a hollow a pipe body, the first end of the hollow pipe body has a sealing structure (36), and the second end of the hollow pipe body is a second opening; The sampling rod (4) is sealed and connected with the second opening, the sampling rod (4) includes a rod body (41), the first end of the rod body (41) is configured with a feces accommodating structure (42), the An overflow channel (421) is configured at the feces accommodating structure (42), the feces accommodating structure (42) has a first position and a second position, when the feces accommodating structure (42) is in the first position, the feces accommodating structure (42) is in the reaction reagent in the reagent tube (3), when the feces accommodating structure (42) is in the second position, the feces accommodating structure (42) The placement structure (42) can pierce the sealing structure (36) so that the reaction reagent in the reagent tube (3) flows into the sealing cavity (11) through the flow passage (421), and the The sealing structure (36) is in sealing contact with the rod body (41), the inlet of the overflow channel (421) is in the reagent tube (3), and the outlet of the overflow channel (421) is in the In the sealed chamber (11). 2. The stool instant detection device according to claim 1, characterized in that, The rod body (41) has a sealing connection section, and when the stool accommodating structure (42) is inserted into the reagent tube (3), the sealing connection section is in sealing connection with the second opening. 3. The stool instant detection device according to claim 2, characterized in that, A scraper (31) extending from the outside to the inside along the radial direction is also configured in the hollow tube body. During the process of inserting the feces containing structure (42) into the reagent tube (3), the The scraping plate (31) can scrape off the excess feces accommodated by the feces holding structure (42); Ministry (46). 4. The stool instant detection device according to claim 1, characterized in that, The reagent tube (3) is snapped connected to the first opening; and/or, the sealing structure (36) is a sealing flexible film. 5. The stool instant detection device according to claim 1, characterized in that, the area of the sealed cavity (11) corresponding to the reagent tube (3) is the second area (101), the sealed cavity ( The remaining area of 11) is the first area (100), the detection test paper (2) is in the first area (100), subject to the orientation of the device in use, the bottom of the sealed cavity (11) There is a drainage surface (12) on the wall, and the sample liquid flowing out of the reagent tube (3) flows from the second area (101) to the first area (100) under the action of the drainage surface (12). . 6. The stool instant detection device according to claim 5, characterized in that, it also includes a test paper fixing plate (51), which is inserted in the first area (100), and the detection test paper (2) is fixed on the On the test paper fixing plate (51). 7. The stool instant detection device according to claim 6, characterized in that, the test paper fixing plate (51) has an assembly groove (511), and a desiccant (52) is assembled in the assembly groove (511). 8. The stool instant detection device according to claim 1, characterized in that, the second opening of the reagent tube (3) has an assembly fitting structure, and the assembly fitting structure includes an inner wall configured on the second opening The guide groove on the top, the guide groove includes a first vertical groove (321), a second vertical groove (322) arranged parallel to each other, and the bottom end of the first vertical groove (321) communicates with the second vertical groove (321). The first horizontal groove (323) at the top of the vertical groove (322), the extending direction of the groove body of the first vertical groove (321) is consistent with the insertion direction of the sampling rod (4) and runs through the assembly fitting structure On the side end surface away from the sealing chamber (11), the sampling rod (4) has a guide protrusion (47), and the guide protrusion (47) fits into the guide groove. 9. The feces instant detection device according to claim 8, characterized in that, the assembly fit structure also includes a positioning groove (33) configured on the inner wall of the second opening, and the sampling rod (4) There is a positioning protrusion (48) on it, and the positioning protrusion (48) is adapted to the positioning groove (33). 10. The feces instant detection device according to claim 9, characterized in that, the guide groove also includes a second transverse groove (324), and the second transverse groove (324) is connected to the first transverse groove ( 323) parallel and one end of the second transverse groove (324) communicates with the second vertical groove (322), and the second transverse groove (324) is adapted to the positioning protrusion (48).

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