Fecal sample sampler for sequencing metagenomes of intestinal microorganisms

Abstract

The utility model relates to the technical field of sampling devices, in particular to an excrement sample sampler for sequencing metagenomes of intestinal microorganisms. The sampling unit is detachably mounted to the sample storage tube, and the sampling unit comprises a handheld part, a sampling part and a sampling part; the near end of the extension part is connected to the handheld part, and the far end of the extension part can extend into the sample storage cavity of the sample storage tube; the clamping jaw assembly is connected to the far end of the extension part, and the clamping jaw assembly is configured to be capable of being switched between a clamping state and a loosening state; the power input end of the actuating assembly is connected to the handheld part, the power output end of the actuating assembly is connected to the clamping jaw assembly, and the power input end can move relative to the handheld part. And the power output end drives the clamping jaw assembly to be switched between the clamping state and the loosening state.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sampling devices, and in particular to a stool sample sampler for intestinal microbial metagenomic sequencing. Background Art

[0002] Gut microbial metagenomic sequencing is an important technology for studying the structure and function of intestinal microbial communities in humans and other animals. By performing metagenomic sequencing on fecal samples, we can obtain information such as the types of intestinal microorganisms, gene functions, and their relationships. This information is of great significance in revealing the relationship between intestinal microorganisms and host health and disease.

[0003] The collection of fecal samples has an important impact on the quality of intestinal microbial metagenomic sequencing and data analysis results. In related technologies, a sampling spoon is often used to collect samples from feces. However, it is difficult to collect samples in a simple way with a sampling spoon, especially when the feces is hard, which leads to poor user experience. Utility Model Content

[0004] The present disclosure provides a stool sample sampler for intestinal microbial metagenomic sequencing, which can collect samples in a simple manner, especially samples with relatively high hardness.

[0005] The present disclosure provides a stool sample sampler for intestinal microbial metagenomic sequencing, comprising:

[0006] Sample storage tubes; and

[0007] A sampling unit, the sampling unit is detachably mounted to the sample storage tube, the sampling unit comprising:

[0008] Handheld part;

[0009] An extension part, wherein a proximal end of the extension part is connected to the handheld part, and a distal end of the extension part can extend into the sample storage cavity of the sample storage tube;

[0010] a jaw assembly connected to a distal end of the extension, the jaw assembly being configured to be switchable between a clamped state and a relaxed state; and

[0011] An actuating assembly, wherein a power input end of the actuating assembly is connected to the handheld portion, a power output end of the actuating assembly is connected to the clamping jaw assembly, and the power input end is movable relative to the handheld portion so that the power output end drives the clamping jaw assembly to switch between the clamping state and the loosened state.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] By pressing the power input end of the actuating assembly, the power output end of the actuating assembly can drive the clamping jaw assembly to switch from a relaxed state to a clamping state, thereby making the first clamping jaw and the second clamping jaw approach each other. It can be seen that the stool sample sampler according to the present disclosure can clamp the stool and then cut the stool. Compared with the prior art of using a sampling spoon to scoop stool, it is easier to obtain stool samples, especially samples can be obtained from hard stools. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An exploded view of a stool sample sampler provided by an embodiment of the present disclosure is shown.

[0015] Figure 2 A schematic diagram showing a sampling unit provided by an embodiment of the present disclosure from one viewing angle is shown.

[0016] Figure 3 A cross-sectional view of a sampling unit provided by an embodiment of the present disclosure is shown.

[0017] Figure 4 A schematic diagram showing a portion of a first clamping jaw provided by an embodiment of the present disclosure is shown.

[0018] Figure 5 A schematic diagram of a stool sample sampler provided by an embodiment of the present disclosure in an unused state is shown.

[0019] Figure 6 A schematic diagram showing a stool sample sampler provided by an embodiment of the present disclosure when ready to perform sampling.

[0020] Figure 7 A schematic diagram showing the stool sample sampler provided by an embodiment of the present disclosure after sampling and the preservation liquid entering the sample storage chamber.

[0021] Figure 8 A schematic diagram showing a stool sample sampler provided by an embodiment of the present disclosure using a cover to close a liquid channel after sampling.

[0022] Reference numerals:

[0023] 1. sample storage tube; 11. opening; 12. sample storage cavity; 13. first internal thread;

[0024] 2. Sampling unit; 21. Hand-held part; 211. First external thread; 212. Groove; 213. Fixed axis; 214. Second external thread; 215. Hand-held area; 22. Extension; 221. Connecting channel; 23. Clamping jaw assembly; 231. First clamping jaw; 2311. Sample clamping groove; 232. Second clamping jaw; 233. Elastic sheet; 2331. First end; 2332. Second end; 2333. Elastic bending section; 24. Actuating assembly; 241. Power input end; 242. Power output end; 243. Connecting piece; 2431. Lower section; 2432. Upper section; 2433. Connecting section; 244. Pressing piece; 2441. Connecting part; 25. Axial direction; 26. Exit; 27. Blocking piece;

[0025] 3. Preservative solution storage tube; 31. Preservative solution storage chamber; 32. Soft part; 33. Hard part;

[0026] 4. Lid. DETAILED DESCRIPTION

[0027] The technical solution of the present disclosure is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings, rather than all of them.

[0028] Some directional words are defined in the present disclosure. Unless otherwise stated, the directional words used, such as "up", "down", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of the present disclosure.

[0029] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0031] The disclosed embodiments provide a stool sample sampler that can provide stool samples for intestinal microbial metagenomic sequencing, and can also provide stool samples for other experiments or tests.

[0032] Figure 1 FIG. 2 shows an exploded view of a stool sampler provided by an embodiment of the present disclosure. Figure 1 As shown, the stool sample sampler includes a sample storage tube 1 and a sampling unit 2.

[0033] like Figure 1 As shown, the sample storage tube 1 is a structure with an opening 11 at the upper end and a hollow interior, and a sample storage cavity 12 is formed inside the sample storage tube 1 and communicates with the opening 11. The shape of the sample storage tube 1 is not limited, for example, it can be a hollow cylinder. Similarly, the shape of the sample storage cavity 12 is also not limited, for example, it can be a cylinder.

[0034] The sampling unit 2 can be connected to the sample storage tube 1, and in particular can be detachably connected to the sample storage tube 1. For example, the sampling unit 2 and the sample storage tube 1 can be detachably connected by means of threaded connection, snap-fit ​​connection, etc.

[0035] Specifically, if Figure 1 As shown, the inner wall of the upper end of the sample storage tube 1 has a first internal thread 13, and the outer wall of the sampling unit 2 has a first external thread 211, and the first external thread 211 and the first internal thread 13 can be connected to each other.

[0036] like Figure 1 As shown, the sampling unit 2 includes a handheld portion 21, an extension portion 22 and a clamping jaw assembly 23. The handheld portion 21 is for the user to grasp or hold, and the shape of the handheld portion 21 may be cylindrical. The extension portion 22 is connected to the lower part of the handheld portion 21, and the extension portion 22 generally extends longitudinally, and the clamping jaw assembly 23 is connected to the lower end of the extension portion 22. In other words, the handheld portion 21 and the clamping jaw assembly 23 are arranged at opposite ends of the extension portion 22, so that when the user's hand grasps the handheld portion 21, a distance is formed between the clamping jaw assembly 23 and the user's hand, which can prevent the user's hand from contacting feces.

[0037] The length of the extension portion 22 can be adjusted according to actual needs, for example, the length of the extension portion 22 is 5-10 cm. In addition, the shape of the extension portion 22 is not limited, and can be a cuboid, a cylinder, etc.

[0038] In this embodiment, the proximal end is close to the user's hand and the distal end is far from the user's hand. Therefore, it can be considered that the proximal end of the extension part 22 is connected to the hand-held part 21 and the distal end of the extension part 22 is connected to the clamping claw assembly 23.

[0039] like Figure 1 As shown, the first external thread 211 mentioned above can be set on the outer wall of the hand-held part 21. When the sampling unit 2 is connected to the sample storage tube 1, the hand-held part 21 is at least partially located outside the sample storage tube 1 to facilitate the user to separate the hand-held part 21 from the sample storage tube 1.

[0040] Specifically, Figure 1 As shown, the grip portion 21 has a grip area 215 located above the first external thread 211 . When the sampling unit 2 is connected to the sample storage tube 1 , the grip area 215 is located outside the sample storage tube 1 .

[0041] like Figure 1 As shown, the size of the extension portion 22 allows it to pass through the opening 11 of the sample storage tube 1 and enter the sample storage cavity 12, especially the distal end ( Figure 1 The middle and lower ends) can enter the sample storage chamber 12.

[0042] like Figure 1 As shown, the size of the jaw assembly 23 allows it to pass through the opening 11 of the sample storage tube 1 and enter the sample storage cavity 12, and the depth of the sample storage cavity 12 allows the jaw assembly 23 to be fully accommodated. In particular, the depth of the sample storage cavity 12 can be greater than the sum of the length of the jaw assembly 23 and the length of the extension 22, so that when the first external thread 211 is connected to the first internal thread 13, the jaw assembly 23 and the extension 22 can be accommodated in the sample storage cavity 12.

[0043] It should be noted that the clamping jaw assembly 23 has a relaxed state (see Figure 1 ) and a clamped state (not shown). Compared to the relaxed state, the distance between the individual jaws in the clamping jaw assembly 23 in the clamped state is closer, so that the sample located between the individual jaws can be clamped.

[0044] Specifically, Figure 1As shown, the jaw assembly 23 includes a first jaw 231 and a second jaw 232, and at least one of the first jaw 231 and the second jaw 232 is a movable jaw. For example, the first jaw 231 is a fixed jaw, and the second jaw 232 is a movable jaw, or vice versa. For another example, the first jaw 231 and the second jaw 232 are both movable jaws, which is the case in this embodiment. The movable jaw can move toward the fixed jaw or the other movable jaw, thereby reducing the distance between the first jaw 231 and the second jaw 232, so that the jaw assembly 23 switches from a relaxed state to a clamped state.

[0045] It should be noted that, in an embodiment not shown, the jaw assembly 23 may also include a third jaw, a fourth jaw, etc. As described above, the third jaw may be a fixed jaw or a movable jaw, and the fourth jaw may be a fixed jaw or a movable jaw.

[0046] like Figure 1 As shown, the sampling unit 2 further includes an actuating assembly 24 , which is configured to drive the jaw assembly 23 to switch between a relaxed state and a clamped state.

[0047] The actuating assembly 24 includes a power input end 241 and a power output end 242. The power input end 241 is connected to the handheld portion 21 (e.g., the handheld area 215 of the handheld portion 21) for user control. The power output end 242 is connected to the movable clamping jaw. When the user applies a force to the power input end 241, the force is transmitted to the power output end 242 and drives the movable clamping jaw to move, so that the clamping jaw assembly 23 is switched from a relaxed state to a clamped state.

[0048] In summary, according to the stool sample sampler of the embodiment of the present disclosure, the user can drive the clamping jaw assembly 23 to switch from a relaxed state to a clamping state by pressing the power input end 241 of the actuating assembly 24, thereby making the first clamping jaw 231 and the second clamping jaw 232 approach each other. It can be seen that the stool sample sampler according to the present disclosure can clamp the feces and then cut the feces. Compared with the prior art of using a sampling spoon to scoop feces, it is easier to obtain feces samples, especially samples can be obtained from feces with greater hardness.

[0049] Figure 2 FIG. 2 is a schematic diagram showing a sampling unit 2 provided in an embodiment of the present disclosure from a viewing angle. Figure 1 and Figure 2 As shown, the first clamping jaw 231 and the second clamping jaw 232 are each provided with an elastic sheet 233 , and the elastic sheet 233 is configured to enable the clamping jaw assembly 23 to have the potential energy to maintain in a relaxed state.

[0050] Specifically, Figure 2As shown, the elastic sheet 233 has a first end 2331, a second end 2332, and an elastic bending section 2333 connected between the first end 2331 and the second end 2332. The first end 2331 is the proximal end of the elastic sheet 233, which is connected to the distal end of the extension portion 22. The second end 2332 is the distal end of the elastic sheet 233, which is connected to the corresponding clamping claw. The elastic bending section 2333 is a curved shape, such as an arc, so that an angle is formed between the line connecting the first end 2331 and the second end 2332 and the axial direction 25 of the sampling unit 2, and in particular, the second end 2332 is further away from the axial direction 25 of the sampling unit 2 than the first end 2331.

[0051] Figure 3 FIG. 2 shows a cross-sectional view of a sampling unit 2 provided in an embodiment of the present disclosure. Figure 3 As shown, the handheld portion 21 has a groove 212, and the power input end 241 of the actuating assembly 24 is located in the groove 212 and can move in the extending direction of the groove 212. The extending portion 22 has a connecting channel 221, the upper end of the connecting channel 221 is connected to the groove 212, the lower end of the connecting channel 221 is located on the lower surface of the extending portion 22, and the power output end 242 of the actuating assembly 24 can move at the lower end of the connecting channel 221.

[0052] like Figure 3 As shown, the actuating assembly 24 includes a connecting member 243 and a pressing member 244. The distal end of the connecting member 243 serves as a power output end 242 of the actuating assembly 24, which is connected to the movable clamp. The middle portion of the connecting member 243 is inserted into the connecting channel 221. The proximal end of the connecting member 243 is located in the groove 212. The pressing member 244 serves as a power input end 241 of the actuating assembly 24, which is connected to the proximal end of the connecting member 243, and the pressing member 244 can move in the groove 212, thereby driving the proximal end of the connecting member 243 to move accordingly.

[0053] When the user applies a force to the pressing member 244 toward the depth of the groove 212, the proximal end of the connecting member 243 is moved accordingly, so that the connecting member 243 moves upward as a whole, and thus the distal end of the connecting member 243 moves upward, thereby driving the second end 2332 of the elastic sheet 233 to approach the axial direction 25 of the sampling unit 2, that is, the clamping jaw assembly 23 switches from a relaxed state to a clamped state.

[0054] When the user no longer applies force to the pressing member 244 , the clamping jaw assembly 23 returns to a relaxed state under the potential energy of the elastic sheet 233 , and the connecting member 243 moves downward as a whole.

[0055] It should be noted that the number of the connecting members 243 corresponds to the number of the movable clamping jaws. When the number of the movable clamping jaws is one, the number of the connecting members 243 is also one. When the number of the movable clamping jaws is two, the number of the connecting members 243 is also two.

[0056] Similarly, the number of pressing members 244 corresponds to the number of connecting members 243 .

[0057] like Figure 3 As shown, a fixed shaft 213 is provided in the groove 212, and the connecting member 243 has a lower section 2431 located below the fixed shaft 213, an upper section 2432 located above the fixed shaft 213, and a connecting section 2433 connected between the lower section 2431 and the upper section 2432. The connecting section 2433 is located on the side of the fixed shaft 213 close to the shallow part of the groove 212, and the pressing member 244 is connected to the upper section 2432, so that when the pressing member 244 moves toward the depth of the groove 212, the upper section 2432 is driven to move toward the depth of the groove 212, and the fixed shaft 213 plays a role similar to a fixed pulley, so that the moving directions of the upper section 2432 and the lower section 2431 are opposite, that is, the lower section 2431 moves toward the shallow part of the groove 212, thereby, the connecting member 243 moves upward as a whole.

[0058] like Figure 3 As shown, the pressing member 244 has a connecting portion 2441 extending toward the depth of the groove 212 , and the upper section 2432 can be connected to the connecting portion 2441 , so that when the pressing member 244 moves toward the depth of the groove 212 , the upper section 2432 can be driven to move toward the depth of the groove 212 .

[0059] like Figure 3 As shown, in this embodiment, the groove 212 extends in a horizontal direction to facilitate the user to press the pressing member 244. However, in other embodiments not shown, the groove 212 may extend obliquely upward or downward.

[0060] like Figure 3 As shown, the pressing member 244 at least partially extends out of the groove 212 when not in use, so that the user can apply force to the pressing member 244.

[0061] Figure 4 FIG. 2 shows a schematic diagram of a first clamping jaw 231 provided in an embodiment of the present disclosure. Figure 4 As shown, in this embodiment, the first clamping jaw 231 is spoon-shaped to facilitate the sample. It should be noted that the second clamping jaw 232 may also be spoon-shaped, in other words, at least one of the first clamping jaw 231 and the second clamping jaw 232 is spoon-shaped.

[0062] like Figure 4As shown, the first clamping jaw 231 has a sample clamping groove 2311, and the sample clamping groove 2311 is used to clamp the sample. The second clamping jaw 232 may also have a sample clamping groove 2311. In other words, at least one of the first clamping jaw 231 and the second clamping jaw 232 has a sample clamping groove 2311. The total volume of all sample clamping grooves 2311 is not less than 2cm 3 , so as to obtain relatively more samples in one clamping action.

[0063] Specifically, Figure 4 As shown, as an example, the length L of the sample clamping groove 2311 can be 1-3 cm, the width W can be 1-3 cm, and the depth can be 0.5-1.5 cm. In particular, the length L can be 1.5-2.5 cm, the width W can be 1-2 cm, and the depth can be 0.5-1.5 cm. More particularly, the length L can be 2 cm, the width W can be 1.5 cm, and the depth can be 1 cm.

[0064] In addition, the distal ends of the first jaw 231 and the second jaw 232 may have a relatively sharp shape to facilitate insertion into a sample.

[0065] Back to Figure 1 The stool sampler further comprises a preservation liquid storage tube 3, which is connected to the end of the sampling unit 2 away from the sample storage tube 1. Figure 1 In the embodiment, the preservation solution storage tube 3 is installed at the upper end of the handheld part 21 , and the sample storage tube 1 can be installed at the lower end of the handheld part 21 .

[0066] The preservation solution storage tube 3 may contain a preservation solution, and the preservation solution is used to preserve the sample, for example, to prevent the sample from being degraded.

[0067] It should be noted that the volume of the preservation solution in the preservation solution storage chamber 31 is smaller than the volume of the sample storage chamber 12 , so that the preservation solution can be fully added to the sample storage chamber 12 without overflowing.

[0068] It should be noted that the formula of the preservation solution belongs to the prior art and will not be described in detail here.

[0069] like Figure 2 As shown, the sampling unit 2 further includes a liquid channel. An inlet (not shown) of the liquid channel is communicated with the preservation liquid storage chamber 31 of the preservation liquid storage tube 3, for example, the inlet of the liquid channel is located on the upper surface of the handheld portion 21. An outlet 26 of the liquid channel is communicated with the sample storage chamber 12, for example, the outlet 26 of the liquid channel can be located on the lower surface of the handheld portion 21, or on the side wall or lower surface of the extension portion 22.

[0070] like Figure 1As shown, a breakable plugging member 27 (such as a plastic rod) is provided at the entrance of the liquid channel, and the plugging member 27 can be a solid plastic rod or a hollow plastic rod. Before the plugging member 27 is broken, the preservation liquid storage chamber 31 is separated from the liquid channel, and the preservation liquid cannot enter the liquid channel.

[0071] like Figure 1 As shown, the preservation liquid storage tube 3 includes a deformable soft part 32 (such as a plastic hose), and the position of the sealing member 27 corresponds to the soft part 32. When the soft part 32 is deformed by an external force, the external force can break the sealing member 27. For example, when the sealing member 27 is a solid plastic rod, the lower end of the sealing member 27 needs to be broken. When the sealing member 27 is a hollow plastic rod, the middle position of the sealing member 27 can also be broken. In any case, when the sealing member 27 is broken, the entrance of the liquid channel is connected to the preservation liquid storage chamber 31, so that the preservation liquid can enter the sample storage chamber 12 through the liquid channel.

[0072] like Figure 1 As shown, the preservation solution storage tube 3 further includes a hard part 33 (eg, hard plastic) that forms an integral structure with the soft part 32 , and the hard part 33 is connected to the sampling unit 2 in a detachable manner.

[0073] Specifically, a second internal thread (not shown) may be provided on the inner wall of the lower end of the hard part 33, and a second external thread 214 may be provided on the outer wall of the upper end of the hand-held part 21, and the second internal thread and the second external thread 214 may be connected to each other.

[0074] Therefore, after the sealing piece 27 is broken and the preservation liquid completely enters the sample storage chamber 12 , the preservation liquid storage tube 3 can be removed from the handheld part 21 , and then the broken sealing piece 27 can be taken out, and then the cover 4 can be connected to the handheld part 21 .

[0075] It should be noted that the sealing problem between the preservation solution storage tube 3 and the handle 21 and between the cover 4 and the handle 21 can be solved by using any sealing device known in the prior art, such as a sealing ring, which will not be described in detail here.

[0076] Figure 5 FIG. 1 is a schematic diagram showing a stool sampler provided by an embodiment of the present disclosure in an unused state. Figure 5 As shown, in an unused state, the sample storage tube 1 is connected to the lower end of the handheld portion 21 , the preservation solution storage tube 3 is connected to the upper end of the handheld portion 21 , and the preservation solution storage tube 3 contains preservation solution.

[0077] Figure 6 FIG. 2 is a schematic diagram showing a stool sample sampler provided by an embodiment of the present disclosure when preparing for sampling. Figure 6As shown, when sampling is ready, the sampling unit 2 is taken out from the sample storage tube 1, and the user can grab or hold the handheld portion 21 to take the sample. After the sampling is completed, the sampling unit 2 is installed in the sample storage tube 1. Afterwards, the blocking member 27 can be broken off so that the preservation liquid can flow into the sample storage chamber 12.

[0078] Figure 7 FIG. 1 is a schematic diagram showing a stool sampler provided by an embodiment of the present disclosure after sampling and the storage liquid entering the sample storage chamber 12. Figure 7 As shown, after all the preservation liquid in the preservation liquid storage chamber 31 enters the sample storage chamber 12, the preservation liquid storage tube 3 can be removed from the handheld portion 21, the broken sealing member 27 can be removed, and then the cover 4 can be installed on the handheld portion 21, thereby obtaining Figure 8 The feces sampler shown. The inner wall of the cover 4 may be provided with an internal thread (not shown) adapted to the second external thread 214 .

[0079] Although the present disclosure has been described in detail above by means of general description, specific implementation methods and experiments, it is obvious to those skilled in the art that some modifications or improvements may be made to the present disclosure. Therefore, these modifications or improvements made without departing from the spirit of the present disclosure are within the scope of protection claimed by the present disclosure.

Claims

1. A stool sampler for intestinal microbial metagenomic sequencing, characterized in that: The stool sampler comprises: A sample storage tube (1); and A sampling unit (2), the sampling unit (2) being detachably mounted to the sample storage tube (1), the sampling unit (2) comprising: Hand-held part (21); An extension portion (22), wherein a proximal end of the extension portion (22) is connected to the handheld portion (21), and a distal end of the extension portion (22) can extend into the sample storage cavity (12) of the sample storage tube (1); a clamping jaw assembly (23) connected to the distal end of the extension portion (22), the clamping jaw assembly (23) being configured to be switchable between a clamped state and a relaxed state; and An actuating assembly (24), wherein a power input end (241) of the actuating assembly (24) is connected to the handheld portion (21), and a power output end (242) of the actuating assembly (24) is connected to the clamping jaw assembly (23), wherein the power input end (241) is movable relative to the handheld portion (21) so that the power output end (242) drives the clamping jaw assembly (23) to switch between the clamping state and the loosening state.

2. The stool sampler according to claim 1, characterized in that: The stool sampler also includes: A preservation liquid storage tube (3), the preservation liquid storage tube (3) being connected to the end of the sampling unit (2) away from the sample storage tube (1), the preservation liquid storage tube (3) comprising a deformable soft part (32); The sampling unit (2) further comprises a liquid channel, the inlet of the liquid channel is connected to the preservation liquid storage chamber (31) of the preservation liquid storage tube (3), the outlet (26) of the liquid channel is connected to the sample storage chamber (12), a breakable plugging member (27) is provided at the inlet of the liquid channel, the position of the plugging member (27) corresponds to the soft part (32), and when the soft part (32) is deformed by an external force, the external force can break the plugging member (27).

3. The stool sampler according to claim 2, characterized in that: The preservation solution storage tube (3) further comprises a hard part (33) which forms an integral structure with the soft part (32), and the hard part (33) is connected to the sampling unit (2) in a detachable manner.

4. The stool sampler according to claim 3, characterized in that: The stool sampler also includes: A cover (4), wherein the cover (4) and the preservation solution storage tube (3) are selectively connected to the end of the sampling unit (2) away from the sample storage tube (1).

5. The stool sampler according to any one of claims 1 to 4, characterized in that: The clamping jaw assembly (23) comprises a first clamping jaw (231) and a second clamping jaw (232), at least one of the first clamping jaw (231) and the second clamping jaw (232) is a movable clamping jaw, the movable clamping jaw is connected to the power output end (242), and the distance between the first clamping jaw (231) and the second clamping jaw (232) is smaller in the clamping state than in the loose state.

6. The stool sampler according to claim 5, characterized in that: At least one of the first clamping jaw (231) and the second clamping jaw (232) is spoon-shaped; and / or At least one of the first clamping jaw (231) and the second clamping jaw (232) has a sample clamping groove (2311), and the total volume of all the sample clamping grooves (2311) is not less than 2 cm 3 .

7. The stool sampler according to claim 5, characterized in that: An elastic sheet (233) is provided on the movable clamping jaw, and the elastic sheet (233) is configured to enable the clamping jaw assembly (23) to have potential energy to remain in the relaxed state.

8. The stool sampler according to claim 5, characterized in that: The actuating assembly (24) comprises: at least one connecting member (243), the distal end of the connecting member (243) being connected to the movable clamping jaw, and the proximal end of the connecting member (243) being located in the groove (212) of the hand-held portion (21); and A pressing member (244) is movably connected to the groove (212), and the pressing member (244) is connected to the proximal end of the connecting member (243). When the pressing member (244) moves deeper into the groove (212), the pressing member (244) applies a force to the distal end of the connecting member (243) to move toward the hand-held part (21), so that the clamping jaw assembly (23) switches from the relaxed state to the clamped state.

9. The stool sampler according to claim 8, characterized in that: A fixed shaft (213) is arranged in the groove (212); the connecting member (243) comprises a lower section (2431) located below the fixed shaft (213), an upper section (2432) located above the fixed shaft (213), and a connecting section (2433) connected between the lower section (2431) and the upper section (2432); the connecting section (2433) is located on the side of the fixed shaft (213) close to the shallow part of the groove (212); and the upper section (2432) is connected to the pressing member (244).

10. The stool sampler according to claim 9, characterized in that: The groove (212) extends in a horizontal direction; and / or The pressing member (244) at least partially protrudes from the groove (212) in an unused state.

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