Integrated collection device with excrement preservation liquid

Abstract

The invention discloses an integrated collection device with excrement preservation liquid, and relates to the technical field of collection devices. The device specifically comprises a base plate, a collection cylinder and a liquid cylinder are fixed to the two ends of the bottom of the base plate respectively, the bottom end of the collection cylinder communicates with a butt joint sleeve, a first piston is slidably arranged in the collection cylinder, a second piston is slidably arranged in the liquid cylinder, and a liquid cavity filled with preservation liquid is formed in the part, located above the second piston, in the liquid cylinder; and an acceleration conveying mechanism is arranged between the collection cylinder and the liquid cylinder. According to the integrated collection device with the excrement preservation liquid, by arranging the collection cylinder, the liquid cylinder, the acceleration conveying mechanism and other structures, excrement collection and preservation liquid mixing are integrated, operation is convenient and fast, the preservation liquid can be sprayed into the collection cylinder at a high speed, excrement and the preservation liquid can be mixed rapidly and evenly, excrement preservation is facilitated, and the collection efficiency is improved. The accuracy of a detection result is ensured, and the use efficiency of the integrated acquisition device is improved.

Description

Technical Field

[0001] This invention relates to the field of collection device technology, specifically to an integrated collection device with a fecal preservation solution. Background Technology

[0002] Fecal nucleic acid testing is a new testing method that has emerged in recent years. By detecting host free nucleic acids and intestinal microbial nucleic acids in feces, we can understand some pathophysiological changes in the intestine, which can then be used for the diagnosis and treatment of intestinal diseases. Correct sample collection and preparation is the first step in the testing process and a key step to ensure the accuracy of the test results.

[0003] Traditional methods require users to first take samples with tools such as spoons or boxes, and then open the preservation solution tube separately to transfer the samples into the preservation solution. This "two-step method" is not only cumbersome and has a high risk of exposure, but it is also very easy for DNA degradation and microbial imbalance to occur due to untimely or inaccurate addition of preservation solution or exposure of the sample to high temperature or dry environment, which ultimately affects the consistency and sensitivity of the test results. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an integrated collection device with fecal preservation liquid, specifically including: a base plate, a collection cylinder and a liquid cylinder are respectively fixed at both ends of the bottom of the base plate, a docking sleeve is connected to the bottom end of the collection cylinder, a first piston is slidably arranged inside the collection cylinder, a second piston is slidably arranged inside the liquid cylinder, and the part of the liquid cylinder above the second piston forms a liquid cavity filled with preservation liquid. An accelerating conveying mechanism is provided between the collection cylinder and the liquid cylinder. The accelerating conveying mechanism includes a first rigid pipe, a flexible pipe, a second rigid pipe, and a control valve. The first rigid pipe, the flexible pipe, and the second rigid pipe are sequentially connected between the top end of the liquid cylinder and the bottom end of the collection cylinder. The control valve is installed on the second rigid pipe. During collection, the first and second pistons move upward synchronously, and the feces are sucked into the collection tube through the docking sleeve. The preservation solution is also forced into the hose, causing the hose to expand. During mixing, the hose contracts to accelerate the flow of the preservation solution into the collection tube and mix with the feces.

[0005] Preferably, the formula for the preservation solution is as follows: Guanidine thiocyanate 0.47%, EDTA-Na 21.86%, sodium chloride 0.9%, 95% ethanol, water to make up the difference.

[0006] Preferably, a one-way valve is fixedly installed at one end of the second rigid tube near the collection tube.

[0007] Preferably, the top end of the collection tube has a first vertical hole that penetrates the substrate, a vertical tube is slidably disposed inside the first vertical hole, and the first piston is fixedly connected to the bottom end of the vertical tube. The top end of the liquid cylinder has a second vertical hole that penetrates the substrate, a vertical column is slidably disposed inside the second vertical hole, and the second piston is fixedly connected to the bottom end of the vertical column. A lifting plate is fixedly connected between the top ends of the vertical tube and the vertical column.

[0008] Preferably, a sliding channel is provided on the side wall of the vertical tube, and a fixed plate is inserted inside the sliding channel. The fixed plate is fixedly connected to the top of the inner wall of the collection tube, and a threaded rod is rotatably provided at the bottom of the fixed plate. A threaded hole that mates with the threaded rod is provided at the bottom end of the vertical tube, and a through hole for the threaded rod to pass through is provided on the first piston. A stirring plate is fixedly connected to the bottom end of the threaded rod.

[0009] Preferably, multiple agitators are provided, and the multiple agitators are evenly distributed around the threaded rod.

[0010] Preferably, the lower surface of the threaded rod is provided with a square groove, and a square rod is slidably disposed inside the square groove, with the square rod extending into the interior of the mating sleeve. A stirring rod is fixedly connected to the bottom end of the square rod, and the stirring rod and the square rod are distributed in an L-shape. A spring is disposed inside the square groove, with one end of the spring fixedly connected to the inner wall of the square groove and the other end of the spring fixedly connected to the square rod.

[0011] Preferably, the top of the liquid cylinder is connected to an injection pipe, and a sealing cap is fitted onto the injection pipe.

[0012] Preferably, a handle is fixedly connected to the substrate, and the handle and the substrate are distributed in a T-shape.

[0013] Preferably, the outside of the collection tube is provided with a closed cover, which cooperates with the docking sleeve.

[0014] Preferably, the axial length of the liquid cylinder is less than the axial length of the collection cylinder.

[0015] This invention provides an integrated collection device with a fecal preservation solution. It has the following beneficial effects: 1. This integrated collection device with fecal preservation liquid integrates fecal collection and preservation liquid mixing by setting up a collection cylinder, a liquid cylinder and an accelerating conveying mechanism. It is easy to operate, and the preservation liquid can be sprayed into the inside of the collection cylinder at high speed, which facilitates rapid and uniform mixing of feces and preservation liquid, which is beneficial to the preservation of feces, ensures the accuracy of test results and improves the efficiency of the integrated collection device.

[0016] 2. This integrated collection device with fecal preservation liquid, by setting up a threaded rod and other structures, uses the movement of the vertical tube and the first piston to make the threaded rod drive the stirring plate to rotate synchronously, so as to stir the feces entering the collection cylinder from the docking sleeve, and prevent the connection between the docking sleeve and the collection cylinder from becoming blocked.

[0017] 3. This integrated collection device with fecal preservation liquid can rinse the stirring plate when the preservation liquid is sprayed into the collection cylinder at high speed, preventing large-area residue from appearing on the stirring plate. The rotation of the stirring plate can also help the feces and preservation liquid to mix quickly and evenly.

[0018] 4. This integrated collection device with fecal preservation liquid, through the setting of a square rod, stirring rod and spring, does not affect the connection between the closing cover and the docking sleeve, and at the same time stirs the feces, making the feces loose, so that the feces can be quickly sucked into the inside of the collection tube, further improving the collection efficiency.

[0019] 5. This integrated collection device with fecal preservation liquid is equipped with a lifting plate and other structures to synchronously control the suction of feces and the output of preservation liquid, ensuring sampling efficiency. Attached Figure Description

[0020] 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, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the integrated collection device with fecal preservation fluid of the present invention. Figure 2 This is a schematic diagram of the structure of the collection cylinder and liquid cylinder of the present invention; Figure 3 This is a schematic diagram of the first rigid tube, the flexible tube, and the second rigid tube of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the vertical tube and sliding channel structure of the present invention; Figure 6 This is a schematic diagram of the vertical tube and square groove structure of the present invention; Figure 7 This is a schematic diagram of the substrate and collection cylinder structure of the present invention; Figure 8 This is a schematic diagram of the fixed plate and threaded rod structure of the present invention.

[0022] In the diagram: 1. Base plate; 2. Collection tube; 3. Liquid cylinder; 4. First piston; 5. Vertical tube; 6. First vertical hole; 7. Second piston; 8. Vertical column; 9. Second vertical hole; 10. Liquid chamber; 11. First rigid tube; 12. Flexible tube; 13. Second rigid tube; 14. Control valve; 15. Check valve; 16. Sliding channel; 17. Fixed plate; 18. Threaded rod; 19. Threaded hole; 20. Stirring plate; 21. Square groove; 22. Square rod; 23. Stirring rod; 24. Spring; 25. Injection tube; 26. Sealing cap; 27. Lifting plate; 28. Connecting sleeve; 29. ​​Closing cap; 30. Handle. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0024] like Figures 1-8 As shown, the present invention provides a technical solution, specifically including: a base plate 1, with a collection cylinder 2 and a liquid cylinder 3 fixed at both ends of the bottom of the base plate 1 respectively. The bottom end of the collection cylinder 2 is connected to a docking sleeve 28. The collection cylinder 2, the liquid cylinder 3 and the docking sleeve 28 can all be made of transparent plastic material, such as medical-grade polypropylene (PP), which has the characteristics of high transparency, chemical corrosion resistance, impact resistance and good biocompatibility, and is suitable for fecal collection and preservation. Moreover, the integrated structure of the collection cylinder 2 and the docking sleeve 28 can be connected to the base plate 1 in an assembly manner, which is convenient for replacement and can be adjusted according to the specific use.

[0025] During sampling, the docking sleeve 28 is in direct contact with the feces, and the axial length of the liquid cylinder 3 is less than the axial length of the collection cylinder 2. When the docking sleeve 28 is in direct contact with the feces, the bottom of the liquid cylinder 3 will not come into contact with the feces because the axial length of the liquid cylinder 3 is less than the axial length of the collection cylinder 2.

[0026] Meanwhile, a closing cover 29 is provided on the outside of the collection tube 2. The closing cover 29 cooperates with the docking sleeve 28. A handle 30 is fixedly connected to the base plate 1, and the handle 30 and the base plate 1 are distributed in a T-shape. In the non-use state, the closing cover 29 is docked with the docking sleeve 28. When it is necessary to collect feces, the operator removes the closing cover 29 and holds the handle 30 so that the docking sleeve 28 directly contacts the feces, and then performs the collection operation.

[0027] Considering that in existing technologies, operators need to first use tools such as spoons and boxes to collect samples, and then separately open the preservation liquid tube to transfer the sample into the preservation liquid, this "two-step method" is not only cumbersome and has a high risk of exposure, but is also prone to DNA degradation and microbial imbalance due to untimely or inaccurate addition of preservation liquid or exposure of the sample to high temperature or dry environment, ultimately affecting the consistency and sensitivity of the test results. In order to achieve convenient collection and improve the accuracy of test results, a first piston 4 is slidably set inside the collection tube 2; a second piston 7 is slidably set inside the liquid tube 3, and the part inside the liquid tube 3 above the second piston 7 forms a liquid cavity 10 filled with preservation liquid. The top of the liquid tube 3 is connected to the injection tube 25, which is connected to the liquid cavity 10. A sealing cap 26 is fitted on the injection tube 25. Specifically, the sealing cap 26 is removed, and the preservation liquid is injected into the liquid cavity 10 through the injection tube 25. After the injection is completed, the injection tube 25 is closed using the sealing cap 26.

[0028] The formula for the preservation solution is as follows: Guanidine thiocyanate 0.47%, EDTA-Na 21.86%, sodium chloride 0.9%, 95% ethanol, water to make up the difference.

[0029] Experimental results showed that after one month of storage at room temperature, the retention rate of total bacterial count in fecal samples preserved using this formula was not significantly different from that on day 0 (P>0.05), indicating that fecal DNA did not undergo significant degradation and could be stably preserved for a long time at room temperature. Samples stored at -80℃ could be directly extracted from the mixture without waiting for thawing, simplifying the experimental procedure, saving experimental time, and avoiding the damage to DNA in fecal samples caused by repeated freeze-thaw cycles.

[0030] The first piston 4 and the second piston 7 can use, but are not limited to, a composite structure in which a medical-grade thermoplastic elastomer (TPE) is used to coat a polypropylene (PP) mandrel.

[0031] The top of the collection tube 2 has a first vertical hole 6, which penetrates the base plate 1. A vertical tube 5 is slidably arranged inside the first vertical hole 6, and a first piston 4 is fixedly connected to the bottom end of the vertical tube 5. When the vertical tube 5 moves upward inside the first vertical hole 6, the first piston 4 moves upward synchronously. When it is necessary to collect feces, the operator removes the closing cover 29 and holds the handle 30 so that the docking sleeve 28 directly contacts the feces. The operator controls the vertical tube 5 and the first piston 4 to move upward, which can suck the feces into the collection tube 2.

[0032] Furthermore, the top of the collection cylinder 2 has an air hole, which does not affect the upward movement of the first piston 4.

[0033] The top of the liquid cylinder 3 is provided with a second vertical hole 9, which penetrates the substrate 1. A vertical column 8 is slidably arranged inside the second vertical hole 9. The second piston 7 is fixedly connected to the bottom end of the vertical column 8. When the vertical column 8 moves upward inside the second vertical hole 9, the second piston 7 moves upward synchronously, compressing the liquid chamber 10, so that the preservation liquid can enter the interior of the collection cylinder 2, thereby achieving the mixing of feces and preservation liquid.

[0034] Furthermore, the bottom end of the liquid cylinder 3 is provided with an air hole, which does not affect the upward movement of the second piston 7.

[0035] A lifting plate 27 is fixedly connected between the top of the vertical tube 5 and the vertical column 8. The operator can hold the handle 30 with one hand and the lifting plate 27 with the other hand, and pull upward to synchronously control the first piston 4 and the second piston 7.

[0036] To achieve efficient delivery of the preservation fluid, an accelerating delivery mechanism is installed between the collection cylinder 2 and the liquid cylinder 3. This mechanism includes a first rigid tube 11, a flexible tube 12, a second rigid tube 13, and a control valve 14. One end of the first rigid tube 11 connects to the top of the liquid cylinder 3, establishing communication with the liquid chamber 10. The other end of the first rigid tube 11 connects to the flexible tube 12. The end of the flexible tube 12 furthest from the first rigid tube 11 connects to the second rigid tube 13. The end of the second rigid tube 13 furthest from the flexible tube 12 connects to the bottom of the collection cylinder 2. In actual use, the connection between the second rigid tube 13 and the collection cylinder 2 can be configured as a movable connection structure, without affecting the replacement of the collection cylinder 2, and can be adjusted according to specific usage requirements.

[0037] The hose 12 can be made of, but is not limited to, rubber, and has a certain degree of elasticity.

[0038] The control valve 14 is installed on the second rigid tube 13, and the operator manually controls the control valve 14. A one-way valve 15 is fixedly installed at one end of the second rigid tube 13 near the collection tube 2. The one-way valve 15 is set so that the preservation liquid can enter the interior of the collection tube 2 through the second rigid tube 13 without flowing in the opposite direction, thus preventing feces from entering the interior of the liquid chamber 10.

[0039] In actual use, the operator removes the closing cover 29, closes the control valve 14, and holds the handle 30 to make the docking sleeve 28 directly contact the feces before carrying out the collection operation.

[0040] The operator holds the lifting plate 27 with one hand and pulls it upward, causing the vertical tube 5 and the vertical column 8 to move upward simultaneously. When the first piston 4 moves upward, it sucks the feces into the collection tube 2. When the second piston 7 moves upward, it compresses the liquid chamber 10, causing the preservation liquid to enter the inside of the hose 12 from the first hard tube 11. Since the control valve 14 is closed at this time, the preservation liquid accumulates inside the hose 12, causing the hose 12 to expand.

[0041] After the feces are collected, the connecting sleeve 28 is closed using the closing cap 29. Then, the lifting plate 27 is pulled upwards, and the control valve 14 is opened simultaneously. Under the combined effect of the contraction elasticity of the hose 12 and the upward squeezing force of the second piston 7, the preservation liquid is sprayed into the interior of the collection cylinder 2 at high speed. Since the feces have a certain viscosity, when the preservation liquid is sprayed in at high speed, the feces can be dispersed, which facilitates the rapid and uniform mixing of the feces and the preservation liquid, and is beneficial to the preservation of the feces.

[0042] By incorporating a collection cylinder 2, a liquid cylinder 3, and an accelerating conveying mechanism, the device integrates fecal collection and preservation liquid mixing into one unit. It is easy to operate, and the preservation liquid can be sprayed into the interior of the collection cylinder 2 at high speed, which facilitates rapid and uniform mixing of feces and preservation liquid, promotes fecal preservation, ensures the accuracy of test results, and improves the efficiency of the integrated collection device.

[0043] The structure, including the lifting plate 27, allows for simultaneous control of fecal suction and preservation fluid output, ensuring sampling efficiency.

[0044] Considering the stickiness of feces, a sliding channel 16 is provided on the side wall of the vertical tube 5 to ensure collection efficiency. A fixed plate 17 is installed inside the sliding channel 16. The fixed plate 17 is fixedly connected to the top of the inner wall of the collection tube 2. A threaded rod 18 is rotatably provided at the bottom of the fixed plate 17. A threaded hole 19 that mates with the threaded rod 18 is provided at the bottom end of the vertical tube 5. A through hole for the threaded rod 18 to pass through is provided on the first piston 4.

[0045] When the vertical tube 5 moves upward inside the first vertical hole 6, the first piston 4 moves upward synchronously. Since the bottom end of the vertical tube 5 has a threaded hole 19 that mates with the threaded rod 18, the threaded rod 18 will rotate.

[0046] A stirring plate 20 is fixedly connected to the bottom end of the threaded rod 18. Multiple stirring plates 20 are provided and are evenly distributed around the threaded rod 18. When the threaded rod 18 rotates, it will drive the stirring plates 20 to rotate synchronously.

[0047] Furthermore, the junction of the second rigid tube 13 and the collection tube 2 is close to the stirring plate 20.

[0048] During the sampling process, the vertical tube 5 moves upward inside the first vertical hole 6, and the first piston 4 moves upward synchronously, sucking the feces into the collection tube 2. Since the bottom end of the vertical tube 5 is provided with a threaded hole 19 that cooperates with the threaded rod 18, the movement of the vertical tube 5 and the first piston 4 causes the threaded rod 18 to drive the stirring plate 20 to rotate synchronously, stirring the feces at the point where the connecting sleeve 28 enters the collection tube 2, preventing blockage at the connection between the connecting sleeve 28 and the collection tube 2.

[0049] Meanwhile, when the preservation solution is sprayed into the collection tube 2 at high speed, the preservation solution can rinse the stirring plate 20 to prevent large-area residue from appearing on the stirring plate 20, and the rotation of the stirring plate 20 can help the feces and preservation solution to mix quickly and evenly.

[0050] To further improve the efficiency of data collection, a square groove 21 is provided on the lower surface of the threaded rod 18. A square rod 22 is slidably arranged inside the square groove 21. The square rod 22 can rotate synchronously with the threaded rod 18 and extends into the interior of the docking sleeve 28. During sampling, the square rod 22 can extend out from the bottom end of the docking sleeve 28.

[0051] A stirring rod 23 is fixedly connected to the bottom end of the square rod 22. The stirring rod 23 and the square rod 22 are distributed in an L-shape. A spring 24 is installed inside the square groove 21. One end of the spring 24 is fixedly connected to the inner wall of the square groove 21, and the other end of the spring 24 is fixedly connected to the square rod 22.

[0052] When placed, the closed cover 29 aligns with the docking sleeve 28, and the closed cover 29 presses the square rod 22 back into the square groove 21, causing the spring 24 to contract.

[0053] Before sampling, the closed cover 29 is removed. The restoring force of the spring 24 causes the square rod 22 to slide outward. The square rod 22 extends from the bottom of the docking sleeve 28 and can directly contact the feces.

[0054] During sampling, when the threaded rod 18 rotates, the square rod 22 and the stirring rod 23 can rotate synchronously with the threaded rod 18 to agitate the feces, making the feces loose and facilitating its rapid absorption into the collection tube 2.

[0055] After sampling is completed, the closing cover 29 is used to close the docking sleeve 28. The closing cover 29 presses the square rod 22 into the square groove 21 and retracts it, and the spring 24 contracts.

[0056] By setting up structures such as square rod 22, stirring rod 23 and spring 24, the connection between the closing cover 29 and the docking sleeve 28 is not affected. At the same time, the feces are stirred, making the feces loose and facilitating the rapid suction of the feces into the collection tube 2, thereby further improving the collection efficiency.

[0057] Working principle: The operator removes the closing cover 29, closes the control valve 14, and holds the handle 30 to make the docking sleeve 28 directly contact the feces, and then performs the collection operation.

[0058] The operator holds the lifting plate 27 with one hand and pulls it upward, causing the vertical tube 5 and the vertical column 8 to move upward simultaneously. When the first piston 4 moves upward, it sucks the feces into the collection tube 2. When the second piston 7 moves upward, it compresses the liquid chamber 10, causing the preservation liquid to enter the inside of the hose 12 from the first hard tube 11. Since the control valve 14 is closed at this time, the preservation liquid accumulates inside the hose 12, causing the hose 12 to expand.

[0059] As the vertical tube 5 moves upward inside the first vertical hole 6 and the first piston 4 moves upward synchronously, the feces are sucked into the collection cylinder 2. Since the bottom end of the vertical tube 5 is provided with a threaded hole 19 that mates with the threaded rod 18, the movement of the vertical tube 5 and the first piston 4 causes the threaded rod 18 to drive the stirring plate 20 to rotate synchronously, which stirs the feces that enters the collection cylinder 2 from the docking sleeve 28, preventing blockage at the connection between the docking sleeve 28 and the collection cylinder 2.

[0060] After the feces are collected, the connecting sleeve 28 is closed using the closing cap 29. Then, the lifting plate 27 is pulled upwards, and the control valve 14 is opened simultaneously. Under the combined effect of the contraction elasticity of the hose 12 and the upward squeezing force of the second piston 7, the preservation liquid is sprayed into the interior of the collection cylinder 2 at high speed. Since the feces have a certain viscosity, when the preservation liquid is sprayed in at high speed, the feces can be dispersed, which facilitates the rapid and uniform mixing of the feces and the preservation liquid, and is beneficial to the preservation of the feces.

[0061] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An integrated collection device with a fecal preservation solution, specifically comprising: The substrate (1) is characterized in that: a collection tube (2) and a liquid tube (3) are fixed at both ends of the bottom of the substrate (1), a docking sleeve (28) is connected to the bottom end of the collection tube (2), a first piston (4) is slidably arranged inside the collection tube (2), a second piston (7) is slidably arranged inside the liquid tube (3), and the part of the liquid tube (3) located above the second piston (7) forms a liquid cavity (10) filled with preservation liquid. An accelerating conveying mechanism is provided between the collection cylinder (2) and the liquid cylinder (3). The accelerating conveying mechanism includes a first rigid pipe (11), a flexible pipe (12), a second rigid pipe (13), and a control valve (14). The first rigid pipe (11), the flexible pipe (12), and the second rigid pipe (13) are connected sequentially between the top of the liquid cylinder (3) and the bottom of the collection cylinder (2). The control valve (14) is installed on the second rigid pipe (13). During collection, the first piston (4) and the second piston (7) move upward synchronously, and the feces are sucked into the collection tube (2) through the docking sleeve (28). The preservation liquid is pressed into the hose (12), and the hose (12) expands. During mixing, the hose (12) contracts to accelerate the input of the preservation liquid into the collection tube (2) and mixes with the feces.

2. The integrated collection device with fecal preservation fluid according to claim 1, characterized in that: A one-way valve (15) is fixedly installed at one end of the second rigid tube (13) near the collection tube (2).

3. The integrated collection device with fecal preservation fluid according to claim 1, characterized in that: The top of the collection tube (2) is provided with a first vertical hole (6), and the first vertical hole (6) penetrates the substrate (1). A vertical tube (5) is slidably arranged inside the first vertical hole (6). The first piston (4) is fixedly connected to the bottom end of the vertical tube (5). The top of the liquid tube (3) is provided with a second vertical hole (9), and the second vertical hole (9) penetrates the substrate (1). A vertical column (8) is slidably arranged inside the second vertical hole (9). The second piston (7) is fixedly connected to the bottom end of the vertical column (8). A lifting plate (27) is fixedly connected between the top of the vertical tube (5) and the top of the vertical column (8).

4. The integrated collection device with fecal preservation fluid according to claim 3, characterized in that: A sliding channel (16) is provided on the side wall of the vertical tube (5). A fixed plate (17) is provided inside the sliding channel (16). The fixed plate (17) is fixedly connected to the top of the inner wall of the collection tube (2). A threaded rod (18) is rotatably provided at the bottom of the fixed plate (17). A threaded hole (19) that mates with the threaded rod (18) is provided at the bottom end of the vertical tube (5). A through hole for the threaded rod (18) to pass through is provided on the first piston (4). A stirring plate (20) is fixedly connected to the bottom end of the threaded rod (18).

5. The integrated collection device with fecal preservation fluid according to claim 4, characterized in that: Multiple stirring plates (20) are provided, and the multiple stirring plates (20) are evenly distributed around the threaded rod (18).

6. The integrated collection device with fecal preservation fluid according to claim 4, characterized in that: The lower surface of the threaded rod (18) is provided with a square groove (21). A square rod (22) is slidably arranged inside the square groove (21) and the square rod (22) extends into the interior of the mating sleeve (28). A stirring rod (23) is fixedly connected to the bottom end of the square rod (22). The stirring rod (23) and the square rod (22) are arranged in an L-shape. A spring (24) is provided inside the square groove (21). One end of the spring (24) is fixedly connected to the inner wall of the square groove (21), and the other end of the spring (24) is fixedly connected to the square rod (22).

7. The integrated collection device with fecal preservation fluid according to claim 1, characterized in that: The top of the liquid cylinder (3) is connected to an injection pipe (25), and a sealing cap (26) is fitted on the injection pipe (25).

8. The integrated collection device with fecal preservation fluid according to claim 1, characterized in that: A handle (30) is fixedly connected to the substrate (1), and the handle (30) and the substrate (1) are distributed in a T-shape.

9. The integrated collection device with fecal preservation fluid according to claim 1, characterized in that: The outside of the collection tube (2) is provided with a closed cover (29), which cooperates with the docking sleeve (28).

10. The integrated collection device with fecal preservation fluid according to claim 1, characterized in that: The axial length of the liquid cylinder (3) is less than the axial length of the collection cylinder (2).

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