A sputum sampling and detection device and its use method

Abstract

The present invention discloses a sputum sampling and detection device and a method for using the same. The sputum sampling and detection device comprises a detection tube, a collection tube and a test paper; the detection tube is provided with a accommodating chamber, a sealing film and a test paper chamber; the sealing film divides the accommodating chamber into a collection tube accommodating portion and a diluent accommodating portion; the test paper chamber is located at the front side of the accommodating chamber, and a connecting channel is provided between the collection tube accommodating portion and the test paper chamber; the connecting channel is located above the sealing film; the diluent accommodating portion is filled with sputum diluent; the collection tube is detachably connected to the collection tube accommodating portion, and a membrane-penetrating structure is provided at the lower end of the collection tube, and the membrane-penetrating structure is used to pierce the sealing film; the test paper is arranged in the test paper chamber. The technical solution of the present application adopts a two-stage pressing design. After the sealing film is pierced, the sampling rod needs to be further pressed to allow the diluent to enter the test paper chamber, thereby effectively preventing the problem of misoperation.

Description

Technical Field

[0001] The present invention relates to the technical field of sample pretreatment and detection of medical tests, and in particular to a sputum sampling and detection device and a use method thereof. Background Art

[0002] At present, sputum samples are mainly used for sputum cytology and respiratory pathogen detection in clinical practice. The existing detection method is that the patient spits sputum directly into a collection container, and then the tester adds diluent to the collection container to dilute the sputum into a test sample, and then inserts a reaction test paper into the test sample for detection.

[0003] Sputum samples are not easy to preserve. At room temperature, the cells in the sputum samples are prone to rupture and release substances that may affect the test results. In addition, the microorganisms carried in the sputum samples will affect the final test results due to activities such as reproduction and metabolism. If the sputum samples are not tested in time after collection, it may cause large errors in the test results. Existing sputum collection devices do not have sputum testing functions. Summary of the invention

[0004] The purpose of the present invention is to provide a sputum sampling and detection device and a method of using the same, so as to solve the problem that the sputum detection operation cannot be performed conveniently and timely in the above-mentioned prior art.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention discloses a sputum sampling and testing device, comprising a testing tube, a collecting tube and a test paper;

[0007] The detection tube is provided with a accommodating cavity, a sealing film and a test paper cavity; the sealing film divides the accommodating cavity into a collection tube accommodating portion and a diluent accommodating portion; the test paper cavity is located at the front side of the accommodating cavity, and a connecting channel is provided between the collection tube accommodating portion and the test paper cavity; the connecting channel is located above the sealing film; the diluent accommodating portion is filled with sputum diluent;

[0008] The collection tube is detachably connected to the collection tube accommodating portion, and a membrane-piercing structure is provided at the lower end of the collection tube, and the membrane-piercing structure is used to pierce the sealing membrane;

[0009] The test paper is arranged in the test paper cavity.

[0010] In the sputum sampling and testing device, the collection tube further comprises a sampling tube, a sampling rod and an extrusion block;

[0011] A through hole is provided at the bottom of the sampling tube, and the sampling rod is slidably connected to the inner wall of the sampling tube;

[0012] The extrusion block is connected to the lower end of the sampling rod;

[0013] The film-penetrating structure comprises a connecting rod and a die-penetrating cone, one end of the connecting rod is connected to the lower end of the extrusion block, and the other end is connected to the top surface of the die-penetrating cone.

[0014] In the sputum sampling and testing device, the collection tube further comprises a holding block, a closing block and a plurality of blocking blocks;

[0015] The holding block is arranged at the upper end of the sampling rod, the closing block and a plurality of blocking blocks protrude from the outer wall of the sampling rod in sequence from top to bottom; an avoidance cavity matched with the closing block is arranged at the entrance of the accommodating cavity; the blocking block is matched with the accommodating cavity.

[0016] The sputum sampling and testing device also includes a test paper sealing tube and a limit block;

[0017] The test paper is placed in the test paper sealing tube, and a diluent inlet is provided at a side of the lower end of the test paper sealing tube close to the connecting channel; a partition protrusion is also provided below the diluent inlet, and the partition protrusion protrudes from the outer wall of the test paper sealing tube; a positioning baffle is provided at the upper end of the test paper sealing tube;

[0018] The limit block is detachably connected to the top of the mounting hole; a positioning protrusion is provided on the side of the limit block facing the test paper sealing tube, and the positioning baffle abuts against the positioning protrusion;

[0019] A mounting hole is provided above the test paper cavity, the test paper sealing tube passes through the limit block and the mounting hole in sequence, and the test paper sealing tube partially enters the test paper cavity;

[0020] When the test paper sealing tube completely enters the test paper cavity, the diluent inlet is communicated with the connecting channel.

[0021] In the sputum sampling and detection device, a locking block is provided at the upper end of the sampling tube, and the locking block protrudes from the outer wall of the sampling tube; the locking block abuts against the positioning baffle.

[0022] The sputum sampling and testing device also includes a sponge, which is arranged at the diluent inlet, and the lower end of the test paper is in contact with the sponge.

[0023] In the sputum sampling and detection device, a positioning portion is provided on the rear side of the limiting block, a positioning hole matched with the positioning portion is provided on the front outer wall of the detection tube, and the positioning portion is engaged with the positioning hole.

[0024] The present invention also discloses a method for using a sputum sampling and detection device, which is applied to the sputum sampling and detection device as described above, and comprises the following steps:

[0025] Collection tube assembly: insert the sampling rod into the sampling tube, make the lower end of the sampling rod pass through the through hole, and assemble into a collection tube;

[0026] Sputum collection: insert the sampling rod into the sputum, then pull the sampling rod upward to draw the sputum into the sampling tube;

[0027] Dilute sputum: insert the collection tube containing sputum into the containing cavity, press the sampling rod to pierce the sealing film, shake the main container sealing tube and the test tube to mix the sputum with the diluent to form a test sample;

[0028] Sample testing: Continue to press the sampling rod to allow the test sample to enter the test paper sealed tube and allow the test sample to contact and react with the test paper; after the test paper reacts with the test sample, you can take out the test paper and observe the test results.

[0029] The sputum sampling and detection device of the present invention can have the following beneficial effects:

[0030] (1) The sputum sampling and testing device collects sputum through a collection tube and dilutes the sputum through a test tube. After the sputum is diluted, it can immediately contact the test paper and react. After the reaction between the diluted sputum and the test paper is completed, the doctor and the patient can obtain the test results through the changes in the test paper, thereby achieving the effect of assisting the patient in the test. In addition, the sputum sampling and testing device is easy to operate, which is convenient for patients to perform quantitative sputum collection by themselves, reducing the errors caused by operational errors.

[0031] (2) The technical solution of the present application adopts a two-stage pressing design. After the sealing film is pierced, the sampling rod needs to be further pressed to allow the diluent to enter the test paper cavity, thereby effectively preventing the problem of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0033] Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0034] Figure 2 is a cross-sectional schematic diagram of one embodiment of the present invention;

[0035] Figure 3 is a schematic diagram of the structure after the limit block is removed in another embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of the explosion structure of one embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of a limit block in one embodiment of the present invention;

[0038] In the accompanying drawings: detection tube 1, collection tube 2, test paper 3;

[0039] Sealing film 12, test paper cavity 13, connecting channel 14, positioning hole 15; sampling tube 21, sampling rod 22, extrusion block 23, membrane penetration structure 24, test paper sealing tube 25, limit block 26, sponge 27;

[0040] The collection tube accommodating portion 111 and the diluent accommodating portion 112 ; the positioning block 211 ; the holding block 221 , the closing block 222 , the blocking block 223 ; the connecting rod 241 , the mold-piercing cone 242 ; the mounting hole 251 , the diluent inlet 252 , the positioning baffle 253 ; the positioning protrusion 261 , and the positioning portion 262 . DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0043] In the description of the present invention, unless otherwise specified, “several” means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Please refer to Figure 1 to Figure 5 , the present invention provides a sputum sampling and testing device, comprising a testing tube 1, a collecting tube 2 and a test paper 3;

[0046] The detection tube 1 is provided with a accommodating chamber, a sealing film 12 and a test paper chamber 13; the sealing film 12 divides the accommodating chamber into a collection tube accommodating portion 111 and a diluent accommodating portion 112; the test paper chamber 13 is located at the front side of the accommodating chamber, and a connecting channel 14 is provided between the collection tube accommodating portion 111 and the test paper chamber 13; the connecting channel 14 is located above the sealing film 12; the diluent accommodating portion 112 is filled with sputum diluent;

[0047] The collection tube 2 is detachably connected to the collection tube accommodating portion 111, and a membrane-piercing structure 24 is provided at the lower end of the collection tube 2, and the membrane-piercing structure 24 is used to pierce the sealing membrane 12;

[0048] The test paper 3 is arranged in the test paper cavity 13 .

[0049] The sputum sampling and testing device collects sputum through the collection tube 2 and dilutes the sputum through the detection tube 1. After the sputum is diluted, it can immediately contact with the test paper 3 and react. After the reaction between the diluted sputum and the test paper 3 is completed, the doctor and the patient can obtain the test result through the change of the test paper 3, so as to achieve the effect of assisting the patient in the detection. Moreover, the sputum sampling and testing device is easy to operate, which is convenient for the patient to perform the quantitative sputum collection operation by himself, and reduces the error caused by the operation error.

[0050] After the collection tube 2 collects the sputum sample, the collection tube 2 is inserted into the accommodating cavity, and the collection tube 2 is pressed, so that the sealing film 12 is penetrated by the membrane-penetrating structure 24 at the lower end of the collection tube 2, so that the sputum sample in the collection tube 2 contacts with the sputum diluent; then the detection tube 1 is shaken to fully mix the sputum sample and the sputum diluent to form a test sample; then, the collection tube 2 is continued to be pressed so that the lower end of the collection tube 2 enters the diluent accommodating portion 112, and the test sample will be squeezed by the collection tube 2, overflow the connecting channel 14, and enter the test paper cavity 13, and finally the test sample contacts and reacts with the test paper 3.

[0051] The sputum sampling and detection device described in the present invention is easy to carry, can collect and quickly detect sputum at any time, and can immediately dilute and test the sputum, thereby preventing the sputum from being placed at room temperature for a long time, causing the cells in the sputum to rupture and release substances that affect the test; at the same time, after the sputum sample is collected, it immediately enters the containing cavity, where there is less air, which can reduce the contact between the sputum sample and the air, thereby preventing the sputum sample from being affected by bacteria in the air.

[0052] The sealing film is used to seal the sputum diluent to prevent the sputum diluent from flowing out of the detection tube 1 when the detection tube 1 is placed horizontally, which is convenient for the placement and storage of the sputum sampling and detection device; at the same time, the sealing film isolates the sputum diluent from the outside world to prevent bacteria, pathogens and other substances in the air from contaminating the sputum diluent.

[0053] Specifically, the collection tube 2 further includes a sampling tube 21, a sampling rod 22 and an extrusion block 23;

[0054] A through hole is provided at the bottom of the sampling tube 21, and the sampling rod 22 is slidably connected to the inner wall of the sampling tube 21;

[0055] The extrusion block 23 is connected to the lower end of the sampling rod 22;

[0056] The film-penetrating structure 24 includes a connecting rod 241 and a mold-penetrating cone 242 . One end of the connecting rod 241 is connected to the lower end of the extrusion block 23 , and the other end is connected to the top surface of the mold-penetrating cone 242 .

[0057] Before starting the test, collect the sputum spitted by the patient into a collection container. When using the sputum sampling and testing device, first insert the sampling rod 22 into the sampling tube 21, so that the lower end of the sampling rod 22 passes through the through hole to assemble into a collection tube 2; the bottom surface of the extrusion block 23, the top surface of the die-piercing cone 242 and the inner wall of the sampling tube 21 are combined to form a sputum collection cavity. During collection, the sampling rod 22 is inserted into the sputum in the collection container, and then the sampling rod 22 is pulled upward to extract the sputum into the sputum collection cavity. Since the length of the connecting rod 241 is fixed, the radius of the sampling tube 21 is also fixed, and the volume of the sputum collection cavity is the same, therefore, the volume of the sputum sample collected by the collection tube 2 is the same, thereby achieving a quantitative collection effect; the collection tube 2 filled with sputum is inserted into the accommodating cavity, and then the sampling rod 22 is pressed to pierce the sealing film 12, and the main container sealing tube detection tube 1 is shaken to mix the sputum with the diluent to form a test sample; the sampling rod 22 is continued to be pressed to allow the test sample to enter the test paper sealing tube 25, and the test sample is contacted and reacted with the test paper 3. After the test paper 3 reacts with the test sample, the test paper 3 can be taken out to observe the test result.

[0058] The sampling tube 21 and the sampling rod 22 are combined to form the collection tube 2, and the purpose of collecting sputum samples is achieved by pulling out the sampling rod 22. When collecting sputum samples, the sputum sample is inserted into the lower end of the transmembrane structure 24 and the sampling tube 21, and the bottom surface of the extrusion block 23 is flush with the outer edge of the through hole; the sputum sample is attached to the transmembrane structure 24, and when the sampling rod 22 is pulled out, the sputum sample will be brought into the sampling tube 21 by the top surface of the transmembrane cone 242 and stored in the sputum collection cavity.

[0059] When the sampling rod 22 is inserted into the detection tube 1, the sampling rod 22 is pressed, and the extrusion block 23 and the membrane-penetrating structure 24 will extend from the through hole to release the sputum sample; at the same time, the mold-penetrating cone 242 contacts the sealing film 12, and the sampling rod 22 is pressed hard, and the mold-penetrating cone 242 pierces the sealing film 12 to mix the sputum sample with the sputum diluent; shake the detection tube 1 to fully mix the sputum sample with the sputum diluent; after shaking, the sampling rod 22 needs to be further pressed. The inner diameter of the diluent receiving portion 112 allows the extrusion block 23 and the membrane-penetrating structure 24 to enter the diluent receiving portion 112, and the extrusion block 23 squeezes the test sample so that the test sample overflows the connecting channel 14 and enters the test paper cavity 13 from the diluent receiving portion 112; the technical solution of the present application adopts a two-stage pressing design. After the sealing film 12 is pierced, the sampling rod 22 needs to be further pressed to allow the diluent to enter the test paper cavity 13, thereby effectively preventing the problem of misoperation.

[0060] Currently, there are some devices for detecting sputum, but the waterproof membrane of such devices is used to seal the test paper. When the waterproof membrane is punctured, the test paper immediately reacts with the solution in the device. If the patient makes a mistake when performing the test operation and does not mix the sputum with the diluent, but directly punctures the waterproof membrane, the test paper immediately reacts with the solution in the device, resulting in a large error in the test. In addition, there are some devices for detecting sputum that separate the test paper and the diluent through a waterproof membrane, but this also cannot solve the problem that the patient mistakenly punctures the waterproof membrane, causing the sputum and the diluent to mix unevenly, resulting in a large error in the test.

[0061] Furthermore, the collection tube 2 also includes a holding block 221, a closing block 222 and a plurality of blocking blocks 223;

[0062] The holding block 221 is arranged at the upper end of the sampling rod 22, and the closing block 222 and a plurality of blocking blocks 223 are sequentially protruded from the outer wall of the sampling rod 22 from top to bottom; an avoidance cavity adapted to the closing block 222 is provided at the entrance of the accommodating cavity; the blocking block 223 is adapted to the accommodating cavity.

[0063] The structure of the holding block 221 facilitates the test personnel or patients to hold the sampling rod 22, so that the test personnel or patients can pull or press the sampling rod 22. The closing block 222 cooperates with the avoidance cavity to play a limiting role, preventing the test personnel or patients from continuing to press after the membrane-penetrating structure 24 contacts the bottom of the diluent receiving portion 112, thereby causing damage to the sputum sampling detection device. The blocking block 223 plays a role in blocking the flow of air, so that when the test personnel or patients pull the sampling rod 22 upward, a negative pressure is formed in the sampling tube 21, so that the sputum sample is adsorbed and enters the sampling tube 21.

[0064] Furthermore, it also includes a test paper sealing tube 25 and a limit block 26;

[0065] The test paper 3 is placed in the test paper sealing tube 25. A diluent inlet 252 is provided at the lower end of the test paper sealing tube 25, close to the connecting channel 14. A partitioning protrusion is also provided below the diluent inlet 252. The partitioning protrusion protrudes from the outer wall of the test paper sealing tube 25. A positioning baffle 253 is provided at the upper end of the test paper sealing tube 25.

[0066] The limit block 26 is detachably connected to the top of the mounting hole 251; a positioning protrusion 261 is provided on the side of the limit block 26 facing the test paper sealing tube 25, and the positioning baffle 253 abuts against the positioning protrusion 261;

[0067] A mounting hole 251 is provided above the test paper cavity 13, and the test paper sealing tube 25 passes through the limit block 26 and the mounting hole 251 in sequence, and a portion of the test paper sealing tube 25 enters the test paper cavity 13;

[0068] When the test paper sealing tube 25 completely enters the test paper cavity 13 , the diluent inlet 252 is communicated with the connecting channel 14 .

[0069] With this structure, after the test paper sealing tube 25 passes through the limit block 26 and the mounting hole 251, the positioning baffle 253 and the positioning protrusion 261 interfere with each other, so that the test paper sealing tube 25 cannot completely enter the test paper cavity 13, so that the diluent inlet 252 and the connecting channel 14 are staggered, which can avoid the problem that the sputum sample and the diluent are not completely mixed before entering the test paper sealing tube 25 through the diluent inlet 252 and the connecting channel 14 in advance when the test tube 1 is shaken, thereby causing the test paper 3 to react with the incompletely diluted sputum sample, resulting in a large error in the test result. After the sputum sample and the diluent are shaken, the tester or the patient removes the limit block 26, so that the test paper sealing tube 25 completely enters the test paper cavity 13, the diluent inlet 252 is connected to the connecting channel 14, and the diluted sputum sample passes through the connecting channel 14 and the diluent inlet 252, enters the test paper sealing tube 25, and contacts and reacts with the test paper 3. The partition protrusion is adapted to the test paper cavity 13 to play an isolating role, thereby preventing the test sample from entering the test paper cavity 13 in advance.

[0070] Preferably, a positioning block 211 is provided at the upper end of the sampling tube 21 , and the positioning block 211 protrudes from the outer wall of the sampling tube 21 ; the positioning block 211 abuts against the positioning baffle 253 .

[0071] When the limit block 26 is not taken out, the test paper sealing tube 25 is lifted up by the positioning protrusion 261, so that the test paper sealing tube 25 cannot completely enter the test paper cavity 13; at the same time, the positioning baffle 253 will abut against the positioning block 211, and the positioning baffle 253 will lift the sampling tube 21, so that the extrusion block 23 and the membrane-penetrating structure 24 cannot completely enter the diluent accommodating portion 112, so that the test sample cannot overflow the connecting channel 14, avoiding the problem that the sampling tube 21 continues to move downward and causes the incompletely diluted sputum sample to be squeezed into the test paper cavity 13, and further preventing the user from operating incorrectly and causing the test paper 3 to react with the incompletely diluted sputum sample.

[0072] In a specific embodiment, a sponge 27 is further included. The sponge 27 is disposed at the diluent inlet 252 , and the lower end of the test paper 3 is in contact with the sponge 27 .

[0073] The sponge 27 plays a role in absorbing the diluted sputum sample; after the diluted sputum sample enters the test paper sealed tube 25, it is absorbed by the sponge 27. Through the capillary phenomenon, the diluted sputum sample gradually contacts the test paper 3 through the sponge 27. In addition, the sponge 27 can also absorb viscous foreign matter and impurities in the sputum, preventing the viscous foreign matter and impurities in the sputum from affecting the test results.

[0074] Optionally, a positioning portion 262 is provided on the rear side of the limit block 26, and a positioning hole 15 adapted to the positioning portion 262 is provided on the front outer wall of the detection tube 1, and the positioning portion 262 is engaged with the positioning hole 15. The limit block 26 and the detection tube 1 are detachably connected through the positioning portion 262 and the positioning hole 15. When the limit block 26 is removed, the positioning hole 15 is connected to the outside world, so that the test paper cavity 13 and the outside air pressure are balanced, which is conducive to the diluted sputum sample entering the test paper cavity 13, so that the test paper 3 can react with a sufficient amount of the diluted sputum sample to avoid measurement errors.

[0075] The present invention also provides a method for using a sputum sampling and detection device, which is applied to a sputum sampling and detection device as described above, and comprises the following steps:

[0076] Assembling the collection tube 2: inserting the sampling rod 22 into the sampling tube 21, so that the lower end of the sampling rod 22 passes through the through hole, and assembling the collection tube 2;

[0077] Sputum collection: insert the sampling rod 22 into the sputum, then pull the sampling rod 22 upward to extract the sputum into the sampling tube 21;

[0078] Dilute sputum: insert the collection tube 2 containing sputum into the containing cavity, press the sampling rod 22 to pierce the sealing film 12, shake the main container sealing tube detection tube 1 to mix the sputum with the diluent to form a test sample;

[0079] Sample testing: Continue to press the sampling rod 22 to allow the test sample to enter the test paper sealing tube 25, and allow the test sample to contact and react with the test paper 3; after the test paper 3 reacts with the test sample, the test paper 3 can be taken out to observe the test result.

[0080] The method eliminates the sputum liquefaction step in the routine sputum detection process, can detect sputum more quickly and accurately, and avoids the influence of interfering factors such as liquefaction reagents, sputum proteins, specimen deterioration, foreign matter and color.

[0081] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific embodiments of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A sputum sampling and detection device, characterized in that: Including test tubes, collection tubes and test strips; The detection tube is provided with a accommodating cavity, a sealing film and a test paper cavity; the sealing film divides the accommodating cavity into a collection tube accommodating portion and a diluent accommodating portion; the test paper cavity is located at the front side of the accommodating cavity, and a connecting channel is provided between the collection tube accommodating portion and the test paper cavity; the connecting channel is located above the sealing film; the diluent accommodating portion is filled with sputum diluent; The collection tube is detachably connected to the collection tube accommodating portion, and a membrane-piercing structure is provided at the lower end of the collection tube, and the membrane-piercing structure is used to pierce the sealing membrane; The test paper is arranged in the test paper cavity; The collection tube also includes a sampling tube, a sampling rod and an extrusion block; A through hole is provided at the bottom of the sampling tube, and the sampling rod is slidably connected to the inner wall of the sampling tube; The extrusion block is connected to the lower end of the sampling rod; The film-penetrating structure comprises a connecting rod and a mold-penetrating cone, one end of the connecting rod is connected to the lower end of the extrusion block, and the other end is connected to the top surface of the mold-penetrating cone; The collection tube also includes a holding block, a closing block and a plurality of blocking blocks; The holding block is arranged at the upper end of the sampling rod, the closing block and a plurality of blocking blocks protrude from the outer wall of the sampling rod in sequence from top to bottom; an avoidance cavity matched with the closing block is arranged at the entrance of the accommodating cavity; the blocking block is matched with the accommodating cavity.

2. A sputum sampling and detection device according to claim 1, characterized in that: Also includes a test paper sealing tube and a limit block; The test paper is placed in the test paper sealing tube, and a diluent inlet is provided at a side of the lower end of the test paper sealing tube close to the connecting channel; a partition protrusion is also provided below the diluent inlet, and the partition protrusion protrudes from the outer wall of the test paper sealing tube; a positioning baffle is provided at the upper end of the test paper sealing tube; The limit block is detachably connected to the top of the mounting hole; a positioning protrusion is provided on the side of the limit block facing the test paper sealing tube, and the positioning baffle abuts against the positioning protrusion; A mounting hole is provided above the test paper cavity, the test paper sealing tube passes through the limit block and the mounting hole in sequence, and the test paper sealing tube partially enters the test paper cavity; When the test paper sealing tube completely enters the test paper cavity, the diluent inlet is communicated with the connecting channel.

3. A sputum sampling and detection device according to claim 2, characterized in that: A positioning block is provided at the upper end of the sampling tube, and the positioning block protrudes from the outer wall of the sampling tube; the positioning block abuts against the positioning baffle.

4. A sputum sampling and detection device according to claim 2, characterized in that: It also includes a sponge, which is arranged at the diluent inlet, and the lower end of the test paper is in contact with the sponge.

5. A sputum sampling and detection device according to claim 2, characterized in that: A positioning portion is provided on the rear side of the limit block, a positioning hole matched with the positioning portion is provided on the front outer wall of the detection tube, and the positioning portion is engaged with the positioning hole.

6. A method for using a sputum sampling and detection device, applied to a sputum sampling and detection device as claimed in claim 1, characterized in that: The following steps are involved: Collection tube assembly: insert the sampling rod into the sampling tube, make the lower end of the sampling rod pass through the through hole, and assemble into a collection tube; Sputum collection: insert the sampling rod into the sputum, then pull the sampling rod upward to draw the sputum into the sampling tube; Dilute sputum: insert the collection tube containing sputum into the containing cavity, press the sampling rod to pierce the sealing film, shake the main container sealing tube and the test tube to mix the sputum with the diluent to form a test sample; Sample testing: Continue to press the sampling rod to allow the test sample to enter the test paper sealed tube and allow the test sample to contact and react with the test paper; after the test paper reacts with the test sample, you can take out the test paper and observe the test results.

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