A sampling detection device

Abstract

The present application relates to gynecological medical detection device technical field, specifically is a kind of sampling detection tool, the present application includes sampling detection part and handle part, the sampling detection part includes sampling cylinder, sampling cylinder inside is provided with the ejector rod movable along its length direction, one end of ejector rod is provided with the sampling air bag with wrinkle surface, wrinkle cooperates with the expansion and contraction of sampling air bag, when expanding, adhere to irregular mucosa and fully contact, when shrinking, wrinkle adsorbs sample.The present application is by using the sampling air bag with wrinkle surface, cooperates with the linkage of guide rail and transmission wheel, drives ejector rod to drive sampling air bag to realize the compound motion of linear extension and spiral rotation, simultaneously, make sampling air bag expand by gas supply assembly, can fully adhere to irregular mucosa morphology of gynecological affected area, wrinkle structure greatly increases sample contact and adsorption area, rotating action further strengthens the comprehensiveness of sample collection.

Description

Technical Field

[0001] This invention relates to the field of gynecological medical testing equipment technology, specifically a sampling and testing device. Background Technology

[0002] In the field of rapid screening for gynecological infectious diseases, the rod-shaped sampler combined with test strips is currently the mainstream point-of-care testing method. However, its sampling structure and motion design have significant flaws, directly affecting the sampling effect and detection accuracy. Existing rod-shaped samplers mostly use rigid cotton swabs or brush structures, which can only collect samples through a linear insertion and removal motion. Due to the rigid structure, the contact area with the affected mucosa is limited, and it cannot flexibly adapt to the irregular mucosal morphology of gynecological lesions. This leads to problems such as insufficient local sampling and missed sampling of key areas during the sampling process. Insufficient or missed content of the target analyte in the sample directly causes false negative results, interfering with the accurate judgment of the condition by medical staff and failing to meet the core needs of clinical screening.

[0003] Meanwhile, the linear insertion and removal sampling action not only further limits the sufficiency of sample adsorption, but also requires operators to repeatedly adjust the sampling angle and depth, which prolongs the time required for a single sampling. In addition, after sampling, the sample on the rigid swab needs to be manually transferred to the surface of the test strip. During the transfer process, the sample is prone to falling off and being damaged, and additional time is needed to confirm the sample transfer effect. The overall process is cumbersome and inefficient, making it difficult to meet the actual needs of rapid clinical screening and batch screening. Summary of the Invention

[0004] The purpose of this invention is to provide a sampling and testing tool to solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions: A sampling and testing device, preferably, includes a sampling and testing part and a handle part. The sampling and testing part includes a sampling tube, and an ejector rod that can move along its length is provided inside the sampling tube. One end of the ejector rod is provided with a sampling airbag with a pleated surface. The pleats cooperate with the expansion and contraction of the sampling airbag. When it expands, it fits the affected area and makes full contact with the irregular mucosa. When it contracts, the pleats absorb the sample. The sampling and detection section is also equipped with an air supply component, which is used to inflate the sampling airbag to make it expand and fit the sampling site, and to deflate it to make it contract and return to its original position. The handle part includes a handle sleeve and a handle rod inserted inside it. One end of the handle rod is connected to the ejector rod. A guide rail is provided on the inner side of the handle sleeve. The guide rail includes a straight track and a spiral track connected to the straight track. A transmission component adapted to the guide rail is provided on the handle rod. When the handle rod moves along the handle sleeve, the ejector rod is driven to move linearly and rotate synchronously through the cooperation of the transmission component and the guide rail. Combined with the expansion effect of the sampling airbag after inflation, it can fully fit the irregular mucosal surface of the affected area. The sampling and testing section is also equipped with a testing mechanism for testing the samples carried by the sampling airbag.

[0006] Preferably, the air supply assembly includes a compressible air supply component and an air supply channel opened inside the ejector rod. The bottom of the air supply channel is connected to the sampling airbag. The compressible air supply component is sleeved on the outer periphery of the ejector rod and supplies air to the sampling airbag through the air supply channel.

[0007] Preferably, the compressible air supply component is a corrugated airbag, and a return spring is also sleeved on the outer periphery of the ejector rod. The return spring is installed inside the sampling cylinder, and the corrugated airbag is sleeved on the outer periphery of the return spring. A connecting boss is fixedly connected to the top of the ejector rod, and the bottom of the connecting boss is fixedly connected to the return spring and the corrugated airbag, which is used to drive the corrugated airbag to compress and supply air and to return and release air.

[0008] Preferably, a positioning ring is fixedly installed inside the sampling cylinder, and the ejector rod slides through the middle of the positioning ring. A limiting ring is fixedly sleeved on the middle section of the ejector rod, and the limiting ring can abut against the positioning ring to limit the retraction stroke of the ejector rod.

[0009] Preferably, the transmission component is a transmission wheel, which is symmetrically rotatably connected to the middle section of the handle rod and is slidably adapted to the guide rail to achieve synchronous spiral rotation when the handle rod moves.

[0010] Preferably, the handle portion is further provided with a drive reset mechanism, including a push handle, a transmission rod assembly and a reset spring 2. The push handle is rotatably connected to the end of the handle insertion rod away from the sampling and detection part. The transmission rod assembly is hinged between the push handle and the handle sleeve. The reset spring 2 is sleeved on the outer periphery of the handle insertion rod and is located between the handle sleeve and the push handle, and is used to drive the handle insertion rod to reset.

[0011] Preferably, the transmission rod assembly includes a first transmission rod symmetrically hinged to one end of the push handle, and a second transmission rod hinged between the end of the first transmission rod and the handle sleeve. The linkage between the first transmission rod and the second transmission rod drives the handle insert rod to move along the handle sleeve.

[0012] Preferably, the top of the connecting boss is provided with a synchronous connecting groove, and the end of the handle insert rod near the ejector rod is symmetrically provided with positioning clips. The positioning clips are adapted to engage with the synchronous connecting groove to realize the transmission connection between the handle insert rod and the ejector rod.

[0013] Preferably, the detection mechanism includes an annular test strip and a transparent cover, wherein the annular test strip is disposed inside the sampling tube and is located at the position where the sampling airbag retracts into the sampling tube; The transparent cover is fixedly connected to the outside of the sampling cylinder and covers the outer periphery of the annular test strip. It is used to observe changes in the test strip. The contracted sampling airbag generates uniform pressure on the test strip, allowing the sample to be quickly transferred to the surface of the test strip without the need for additional squeezing or smearing operations.

[0014] Preferably, the bottom outer side of the handle sleeve is provided with an external thread, and the end of the sampling cylinder near the handle is provided with a matching internal thread, so that the two can be detachably connected; A protective handle is fixedly fitted around the outer periphery of the sampling tube. The protective handle is located at the end of the sampling tube closest to the hand for operation, in order to prevent the hand from contaminating the sampling tube.

[0015] The beneficial effects of this invention are: 1. This invention employs a sampling airbag with a pleated surface, which, in conjunction with the linkage of a guide rail and a transmission wheel, drives the ejector rod to achieve a combined linear extension and spiral rotation of the sampling airbag. Simultaneously, the air supply component inflates the sampling airbag, allowing it to fully conform to the irregular mucosal morphology of gynecological lesions. The pleated structure significantly increases the sample contact and adsorption area, and the rotational motion further enhances the comprehensiveness of sample collection, effectively avoiding false negatives caused by local omissions or insufficient sampling, and ensuring the accuracy of the test.

[0016] 2. This invention eliminates the need for manual sample transfer after sampling by designing the sampling airbag to directly contact the ring-shaped test strip after retraction. The detection is started simultaneously after sampling, without the need for additional operation to confirm the sample transfer. The linkage design of compound motion and airbag expansion eliminates the need to repeatedly adjust the sampling angle and depth, greatly reducing the time required for a single sampling. Combined with the transparent cover for intuitive observation of test strip changes, it effectively improves detection efficiency.

[0017] 3. This invention allows for the complete sampling and resetting operation with one hand through the cooperation of the push handle and the handle. The action is smooth and without jamming, reducing the difficulty of operation. In addition, the handle and the sampling and detection part are detachably connected by threads. The handle can be reused after cleaning and disinfection. Only the sampling and detection part needs to be replaced, which effectively reduces the cost of consumables. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1This is a schematic diagram of the overall structure of the sampling and testing tool in this invention; Figure 2 This is a top view of the sampling and testing device in this invention; Figure 3 yes Figure 2 A cross-sectional view along the AA direction; Figure 4 This is an exploded view of the internal structure of the handle sleeve in this invention; Figure 5 This is an exploded view of the internal structure of the sampling cylinder in this invention; Figure 6 This is a schematic diagram of the internal structure of the corrugated airbag in this invention; Figure 7 This is a schematic diagram of the internal structure of the gas supply channel in this invention; Figure 8 This is a three-dimensional structural diagram of the protective handle in this invention; Figure 9 This is a schematic diagram of the internal structure of the sampling airbag in this invention.

[0019] The attached diagram is labeled as follows: 1. Sampling cylinder; 2. Push rod; 3. Sampling airbag; 4. Handle sleeve; 5. Handle insertion rod; 6. Guide rail; 7. Air supply channel; 8. Corrugated airbag; 9. Return spring one; 10. Connecting boss; 11. Positioning ring; 12. Limiting ring; 13. Transmission wheel; 14. Push handle; 15. Return spring two; 16. Transmission rod one; 17. Transmission rod two; 18. Synchronous connection groove; 19. Positioning clip; 20. Annular test paper; 21. Transparent cover; 22. External thread; 23. Internal thread; 24. Protective handle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] A sampling and testing device, which is a core instrument for rapid gynecological screening, is specifically designed to achieve dynamic adaptation of mucosal adhesion during gynecological sampling, enhanced linkage between the sampling airbag folds and rotational movements, and seamless connection between sample collection and testing through the coordinated operation of the air supply component, the spiral transmission mechanism and the integrated sampling and testing mechanism. At the same time, it enables precise control of the sampling process and rapid and intuitive interpretation of the test results.

[0022] like Figures 1-9As shown, it includes a sampling and detection part and a handle part. The sampling and detection part includes a sampling cylinder 1. Inside the sampling cylinder 1, there is an ejector rod 2 that can move along its length. One end of the ejector rod 2 is provided with a sampling airbag 3 with a pleated surface. The pleats cooperate with the expansion and contraction of the sampling airbag 3. When it expands, it fits the affected area and makes full contact with the irregular mucosa. When it contracts, the pleats absorb the sample. The sampling and testing section is also equipped with an air supply component, which is used to inflate the sampling airbag 3 to make it expand and fit the sampling site, and deflate it to make it contract and return to its original position. The handle part includes a handle sleeve 4 and a handle rod 5 inserted inside it. One end of the handle rod 5 is connected to the ejector rod 2. A guide rail 6 is provided on the inner side of the handle sleeve 4. The guide rail 6 includes a straight track and a spiral track connected to the straight track. A transmission component adapted to the guide rail 6 is provided on the handle rod 5. When the handle rod 5 moves along the handle sleeve 4, the ejector rod 2 is driven to move linearly and rotate synchronously through the cooperation of the transmission component and the guide rail 6. Combined with the expansion effect of the sampling airbag 3 after inflation, it can fully fit the irregular mucosal surface of the affected area. The sampling and testing section also includes a testing facility for testing the samples carried by the sampling airbag 3.

[0023] The air supply component includes a compressible air supply element and an air supply channel 7 opened inside the ejector rod 2. The bottom of the air supply channel 7 is connected to the sampling airbag 3. The compressible air supply element is sleeved on the outer periphery of the ejector rod 2 and supplies air to the sampling airbag 3 through the air supply channel 7.

[0024] Furthermore, the compressible air supply component is a corrugated airbag 8, and a return spring 9 is also sleeved on the outer periphery of the ejector rod 2. The return spring 9 is installed inside the sampling cylinder 1, and the corrugated airbag 8 is sleeved on the outer periphery of the return spring 9. A connecting boss 10 is fixedly connected to the top of the ejector rod 2, and the bottom of the connecting boss 10 is fixedly connected to the return spring 9 and the corrugated airbag 8, which is used to drive the corrugated airbag 8 to compress and supply air and to reset and release air.

[0025] Furthermore, a positioning ring 11 is fixedly installed inside the sampling cylinder 1, and the ejector rod 2 slides through the middle of the positioning ring 11. A limiting ring 12 is fixedly sleeved in the middle section of the ejector rod 2. The limiting ring 12 can abut against the positioning ring 11 to limit the retraction stroke of the ejector rod 2.

[0026] Furthermore, the transmission component is a transmission wheel 13, which is symmetrically connected to the middle section of the handle rod 5 and is slidably adapted to the guide rail 6 to achieve synchronous spiral rotation when the handle rod 5 moves.

[0027] Furthermore, the handle is also equipped with a drive reset mechanism, including a push handle 14, a transmission rod assembly and a reset spring 15. The push handle 14 is rotatably connected to the end of the handle rod 5 away from the sampling and detection part. The transmission rod assembly is hinged between the push handle 14 and the handle sleeve 4. The reset spring 15 is sleeved on the outer periphery of the handle rod 5 and is located between the handle sleeve 4 and the push handle 14, and is used to drive the handle rod 5 to reset.

[0028] Furthermore, the transmission rod assembly includes a transmission rod 16 symmetrically hinged to one end of the push handle 14, and a transmission rod 2 17 hinged between the end of the transmission rod 16 and the handle sleeve 4. The linkage between the transmission rod 16 and the transmission rod 2 17 drives the handle insert 5 to move along the handle sleeve 4.

[0029] Furthermore, a synchronous connection groove 18 is provided on the top of the connecting boss 10, and a positioning clip 19 is symmetrically provided at one end of the handle insertion rod 5 near the ejector rod 2. The positioning clip 19 is adapted to engage with the synchronous connection groove 18 to realize the transmission connection between the handle insertion rod 5 and the ejector rod 2.

[0030] Furthermore, the testing mechanism includes an annular test strip 20 and a transparent cover 21. The annular test strip 20 is located inside the sampling tube 1 and at the position where the sampling airbag 3 retracts into the sampling tube 1. The transparent cover 21 is fixedly connected to the outside of the sampling cylinder 1 and covers the outer periphery of the annular test paper 20 for observing changes in the test paper. The contracted sampling airbag 3 generates uniform pressure on the test paper, allowing the sample to be quickly transferred to the surface of the test paper without the need for additional squeezing or smearing operations.

[0031] Furthermore, the bottom outer side of the handle sleeve 4 is provided with an external thread 22, and the end of the sampling cylinder 1 near the handle is provided with a matching internal thread 23, so that the two can be detachably connected. A protective handle 24 is fixedly sleeved on the outer periphery of the sampling cylinder 1. The protective handle 24 is located at the end of the sampling cylinder 1 closest to the hand for operation, in order to prevent the hand from contaminating the sampling cylinder 1.

[0032] In use, firstly, an annular observation window is provided on the outer side of the handle sleeve 4. The operator screws the sampling and testing part to the handle part through the threaded structure. With the assistance of the annular observation window, the positioning clip 19 and the synchronous connecting groove 18 are quickly engaged and adapted. The protective handle 24 naturally fits the hand grip area, forming a physical isolation. Even if the operator's hands have slight sweat or dirt, they will not come into contact with the insertion end of the sampling cylinder 1, thus avoiding the risk of sample contamination and ensuring the accuracy of the test results. Then, considering the delicate mucosa of gynecological lesions and the deep sampling site, the operator holds the outer handle of the handle sleeve 4, gently touches the push handle 14 with their palm, and slowly applies force. The push handle 14 drives the handle insertion rod 5 to move smoothly downward through the transmission rod assembly. At this time, the transmission wheel 13 slides along the straight section of the guide track 6, and the ejector rod 2 drives the sampling airbag 3 to slowly extend out of the sampling tube 1, avoiding rapid extension that may irritate or damage the mucosa. When the transmission wheel 13 enters the spiral section, the handle insertion rod 5 rotates spirally, driving the ejector rod 2 and the sampling airbag 3 to extend outward while slowly rotating. Combined with the expansion effect of the inflated sampling airbag 3, it can fully conform to the irregular mucosal surface of the lesion. At this time, the sampling balloon 3 gradually expands under the air supply of the corrugated balloon 8, and the surface wrinkles are fully stretched, making full contact with the mucosa. During the rotation, the wrinkles effectively adsorb the mucosal secretions. At the same time, the linkage between the reset spring 9 and the corrugated balloon 8 ensures that the expansion force of the sampling balloon 3 remains uniform, preventing bleeding caused by excessive force compressing the mucosa, and preventing the sampling effect from being affected by insufficient expansion, thus adapting to the mucosal condition of patients with different physical conditions. After sampling, the operator releases the push handle 14, and the reset spring 15 quickly releases its potential energy, causing the handle rod 5 to reset in the opposite direction. The transmission wheel 13 slides in the opposite direction along the spiral path, and the push rod 2 moves in the opposite direction in both linear and rotational motions. The sampling airbag 3 retracts smoothly. During this process, the corrugated airbag 8 returns to its original shape and forms a negative pressure. The gas inside the sampling airbag 3 flows back quickly, and the airbag contracts naturally, tightly wrapping the sample adsorbed between the folds. This prevents the sample from falling out or being spilled inside the sampling tube 1 during the retraction process, ensuring that the sample is transferred intact to the testing stage. When the limiting ring 12 and the positioning ring 11 precisely contact each other, the ejector rod 2 stops retracting. At this time, the sampling airbag 3 is completely housed inside the sampling cylinder 1, forming full contact with the annular test strip 20. The retracted sampling airbag 3 exerts uniform pressure on the test strip, allowing the sample to be quickly transferred to the surface of the test strip without the need for additional squeezing or smearing operations. The sample transfer is thorough and without loss. The operator can directly observe the color change of the test strip through the transparent cover 21 without disassembling the sampling cylinder 1, thus improving detection efficiency. After the test is completed, the operator unscrews the threaded connection to separate the sampling and testing part from the handle part. The used sampling and testing part is discarded, and the handle part can be reused with a new sampling and testing part after routine cleaning and disinfection, effectively reducing the consumable cost per screening.

[0033] The working principle of the sampling and testing tool provided by this invention is as follows: First, such as Figures 3-5 As shown, by using the external thread 22 at the bottom of the handle sleeve 4 and the internal thread 23 at the corresponding end of the sampling cylinder 1, the sampling and detection part and the handle part are screwed and fixed, so as to achieve detachable connection while ensuring structural stability and facilitating the reuse of the handle part in the future. Then, as Figures 3-5 , Figure 8 As shown, the positioning clip 19 in the middle section of the handle sleeve 4 is matched and engaged with the synchronous connecting groove 18 on the top of the connecting boss 10, so that the handle insertion rod 5 and the ejector rod 2 form a stable transmission relationship. At this time, the sampling airbag 3 is in a naturally contracted state and is stored inside the sampling cylinder 1. The first return spring 9 and the second return spring 15 are both in the initial extended state. The protective handle 24 is sleeved on the end of the sampling cylinder 1 near the hand operation, which can effectively isolate the hand from the insertion end of the sampling cylinder 1 and avoid contamination caused by hand contact. Next, as Figures 1-5 As shown, the operator holds the handle on the outside of the handle sleeve 4, with their palm against the push handle 14 and grips it tightly. This forces the push handle 14 to move the handle rod 5 downwards along the length of the handle sleeve 4, simultaneously compressing the return spring 15 sleeved around the handle rod 5. During this process, the transmission wheel 13 in the middle of the handle rod 5 slides along the guide rail 6 inside the handle sleeve 4. Initially, the transmission wheel 13 moves along a straight track, only causing the handle rod 5 to move linearly, ensuring that the ejector rod 2 smoothly extends the sampling airbag 3. When the drive wheel 13 enters the spiral channel connected to the straight channel, the guiding effect of the spiral channel causes the drive wheel 13 to drive the handle rod 5 to move in a straight line and rotate in a spiral at the same time. Through the transmission action of the positioning clip 19 and the synchronous connecting groove 18, the ejector rod 2 is driven to extend in a straight line and rotate in a spiral at the same time. At the same time, such as Figure 3 and Figures 5-7 , Figure 9 As shown, the connecting boss 10 at the top of the ejector rod 2 moves downward synchronously, compressing the corrugated airbag 8 and the return spring 9 fitted around the outer periphery of the ejector rod 2. Since the bottom of the connecting boss 10 is fixedly connected to the corrugated airbag 8 and the return spring 9, the gas inside the corrugated airbag 8 is transported to the sampling airbag 3 through the air supply channel 7 inside the ejector rod 2 after being compressed, causing the sampling airbag 3 to gradually expand. As the ejector rod 2 continues to extend, the expanded sampling balloon 3 passes through the sampling tube 1 and fits tightly against the gynecological mucosa. The pleated design on the surface of the sampling balloon 3 can greatly increase the contact area with the mucosa. Combined with the spiral rotation of the ejector rod 2, it can fully absorb the secretion sample from the affected area. After sampling, the operator releases the push handle 14, and the compressed reset spring 15 releases its potential energy, pushing the push handle 14 upward to reset, causing the handle insertion rod 5 to move in the opposite direction along the handle sleeve 4. At this time, the transmission wheel 13 slides in the opposite direction along the spiral path, causing the handle insertion rod 5 and the ejector rod 2 to move in opposite linear motion and spiral rotation in sync, so that the ejector rod 2 gradually retracts into the sampling cylinder 1. At the same time, the reset spring 9 also releases its potential energy, pushing the connecting boss 10 upward to reset, causing the corrugated airbag 8 to return to its original shape, creating a negative pressure inside the corrugated airbag 8. The gas in the sampling airbag 3 flows back to the corrugated airbag 8 through the gas supply channel 7, and the sampling airbag 3 contracts accordingly, firmly carrying the sample adsorbed on the surface and preventing the sample from falling off. When the ejector rod 2 retracts to its preset stroke, the limiting ring 12 in the middle of the ejector rod 2 abuts against the positioning ring 11 inside the sampling cylinder 1, precisely limiting the retraction position of the ejector rod 2 and ensuring that the sampling airbag 3 is fully contracted and housed inside the sampling cylinder 1. At this time, the contracted sampling airbag 3 makes full contact with the annular test paper 20 on the inner side of the sampling cylinder 1, and the sample carried on the surface of the sampling airbag 3 is transferred to the annular test paper 20. The test paper and the sample undergo a specific reaction, achieving seamless connection between sampling and detection. Finally, the operator can directly observe the color change of the test paper through the transparent cover 21 that is placed around the outer periphery of the ring-shaped test paper 20, and quickly judge the test results without the need for additional sample transfer, which greatly shortens the test time. Furthermore, after the test is completed, the threaded connection between the handle and the sampling and testing part is unscrewed, the two are separated, the used sampling and testing part is discarded, and the handle part can be reused after cleaning and disinfection, reducing the waste of medical consumables.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A sampling and testing tool, comprising a sampling and testing part and a handle part, characterized in that: The sampling and detection part includes a sampling tube (1), and a push rod (2) that can move along its length is provided inside the sampling tube (1). One end of the push rod (2) is provided with a sampling airbag (3) with a pleated surface. The sampling and detection section is also equipped with an air supply component, which is used to inflate the sampling airbag (3) to make it expand and fit the sampling site, and deflate it to make it contract and return to its original position; The handle part includes a handle sleeve (4) and a handle rod (5) inserted inside it. One end of the handle rod (5) is connected to the ejector rod (2) for transmission. A guide rail (6) is provided on the inner side of the handle sleeve (4). The guide rail (6) includes a straight track and a spiral track connected to the straight track. A transmission component adapted to the guide rail (6) is provided on the handle rod (5). When the handle rod (5) moves along the handle sleeve (4), the ejector rod (2) is driven to move in a straight line and rotate synchronously through the cooperation of the transmission component and the guide rail (6). The sampling and testing section is also equipped with a testing mechanism for testing the sample carried by the sampling airbag (3).

2. The sampling and testing tool according to claim 1, characterized in that: The gas supply assembly includes a compressible gas supply component and a gas supply channel (7) opened inside the ejector rod (2). The bottom of the gas supply channel (7) is connected to the sampling airbag (3). The compressible gas supply component is sleeved on the outer periphery of the ejector rod (2) and supplies gas to the sampling airbag (3) through the gas supply channel (7).

3. The sampling and testing tool according to claim 2, characterized in that: The compressible air supply component is a corrugated airbag (8). A return spring (9) is also sleeved on the outer periphery of the ejector rod (2). The return spring (9) is installed inside the sampling cylinder (1). The corrugated airbag (8) is sleeved on the outer periphery of the return spring (9). A connecting boss (10) is fixedly connected to the top of the ejector rod (2). The bottom of the connecting boss (10) is fixedly connected to the return spring (9) and the corrugated airbag (8) to drive the corrugated airbag (8) to compress and supply air and to release air.

4. The sampling and testing tool according to claim 1, characterized in that: The sampling tube (1) is fixedly provided with a positioning ring (11), and the ejector rod (2) slides through the middle of the positioning ring (11). A limiting ring (12) is fixedly sleeved in the middle section of the ejector rod (2). The limiting ring (12) can abut against the positioning ring (11) to limit the retraction stroke of the ejector rod (2).

5. A sampling and testing tool according to claim 1, characterized in that: The transmission component is a transmission wheel (13), which is symmetrically connected to the middle section of the handle rod (5) and is slidably adapted to the guide rail (6) to achieve synchronous spiral rotation when the handle rod (5) moves.

6. A sampling and testing tool according to claim 1, characterized in that: The handle part is also provided with a drive reset mechanism, including a push handle (14), a transmission rod group and a reset spring two (15). The push handle (14) is rotatably connected to the end of the handle plug (5) away from the sampling and detection part. The transmission rod group is hinged between the push handle (14) and the handle sleeve (4). The reset spring two (15) is sleeved on the outer periphery of the handle plug (5) and located between the handle sleeve (4) and the push handle (14), and is used to drive the handle plug (5) to reset.

7. A sampling and testing tool according to claim 6, characterized in that: The transmission rod assembly includes a transmission rod one (16) symmetrically hinged to one end of the push handle (14), and a transmission rod two (17) hinged between the end of the transmission rod one (16) and the handle sleeve (4). The linkage between the transmission rod one (16) and the transmission rod two (17) drives the handle insert (5) to move along the handle sleeve (4).

8. A sampling and testing tool according to claim 3, characterized in that: The top of the connecting boss (10) is provided with a synchronous connecting groove (18), and a positioning clip (19) is symmetrically provided at one end of the handle insert (5) near the ejector rod (2). The positioning clip (19) is adapted to the synchronous connecting groove (18) to realize the transmission connection between the handle insert (5) and the ejector rod (2).

9. A sampling and testing tool according to claim 1, characterized in that: The testing mechanism includes a ring-shaped test strip (20) and a transparent cover (21). The ring-shaped test strip (20) is located inside the sampling tube (1) and at the position where the sampling airbag (3) retracts into the sampling tube (1). The transparent cover (21) is fixedly connected to the outside of the sampling tube (1) and covers the outer periphery of the annular test paper (20) for observing changes in the test paper.

10. A sampling and testing tool according to claim 1, characterized in that: The handle sleeve (4) has an external thread (22) on the outer side of its bottom, and the sampling cylinder (1) has a matching internal thread (23) at one end near the handle, so that the two can be detachably connected. The sampling tube (1) is fixedly fitted with a protective handle (24) on its outer periphery. The protective handle (24) is located at the end of the sampling tube (1) that is close to the hand for operation, in order to prevent the hand from contaminating the sampling tube (1).

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