Excrement sample collecting device

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an excrement sample collecting device which comprises a dilution bottle, a dilution chamber and a mixing chamber are sequentially formed in the dilution bottle from the inner side to the outer side, and a separation membrane is fixed in the mixing chamber; the interior of the mixing chamber is divided into a first refrigeration cavity and a second refrigeration cavity through a separation film, the first refrigeration cavity is located at the upper end of the second refrigeration cavity, the first refrigeration cavity is filled with a first refrigeration medium, and the second refrigeration cavity is filled with a second refrigeration medium. By pressing a linkage rod, a tool bit punctures a separation membrane, a knob is rotated, so that the tool bit cuts the separation membrane, a first refrigerating medium flows into a second refrigerating cavity, and a second refrigerating medium absorbs heat in a dissolving process, so that a low-temperature environment is formed in a dilution cavity, and a feces sample is conveniently stored at a low temperature; in the process of going out, a low-temperature heat insulation device does not need to be additionally carried.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a fecal sample collection device. Background Technology

[0002] In clinical medical diagnosis, stool sample testing is an important diagnostic method that can be used to screen for various health problems such as digestive tract diseases and infectious diseases. Stool sample collection devices are key tools for achieving efficient and hygienic stool sample collection. With the continuous development of medical diagnostic technology, higher requirements have been placed on the convenience of stool sample collection and the effectiveness of sample preservation. Various stool sample collection devices are gradually being applied in clinical practice and home sampling scenarios.

[0003] However, there are still many problems to be solved in the current process of collecting fecal samples. When patients do not have an immediate need to defecate, they often need to carry the sampling device with them when they go out. After the fecal sample is collected, it usually needs to be sent for testing in a low-temperature environment within a short period of time to ensure the quality of the sample. The existing sampling device itself does not have a low-temperature preservation function. It is necessary to equip it with an additional low-temperature insulation device (such as ice packs, foam insulation bags, etc.) to achieve low-temperature preservation of the sample. This not only increases the burden on patients, making it extremely inconvenient to carry when going out, but also some ice packs need to be frozen in advance, which greatly reduces the convenience of use.

[0004] In summary, existing fecal sample collection devices suffer from problems such as inconvenience in carrying, limited low-temperature preservation effect, and poor timeliness due to the lack of integrated low-temperature preservation function. These issues fail to adequately meet the needs of patients for out-of-home sampling and high-quality sample delivery. Therefore, developing a fecal sample collection device that combines convenient portability with effective low-temperature preservation is of significant practical importance. Summary of the Invention

[0005] The purpose of this invention is to provide a fecal sample collection device. By pressing the linkage rod, the blade punctures the septum membrane, and by rotating the knob, the blade cuts the septum membrane, allowing the first refrigerant inside the first cooling chamber to flow into the second cooling chamber. The second refrigerant absorbs heat during the dissolution process, creating a low-temperature environment inside the dilution chamber. This facilitates low-temperature storage of fecal samples, ensuring their validity. Furthermore, patients do not need to carry additional low-temperature insulation devices when traveling, reducing their carrying burden.

[0006] The specific technical solution adopted by this invention is as follows: A fecal sample collection device includes a dilution bottle. The interior of the dilution bottle has a dilution chamber and a mixing chamber sequentially formed from the inside to the outside. A separator membrane is fixed inside the mixing chamber, and the separator membrane divides the mixing chamber into a first cooling chamber and a second cooling chamber. The first cooling chamber is located above the second cooling chamber. The first cooling chamber is filled with a first refrigerant, and the second cooling chamber is filled with a second refrigerant. An outlet is integrally formed at the lower end of the dilution bottle, and the outlet is interconnected with the dilution chamber. An end cap is detachably fitted onto the outside of the outlet using a transition fit. The device also includes: A dividing assembly, which is mounted on the upper part of the interior of a dilution flask, is configured to puncture a separating membrane to mix a first refrigerant and a second refrigerant. A sampling assembly, which is mounted on the upper end of a dilution bottle and located above the dividing assembly; The first and second refrigerants, when mixed, can absorb heat and reduce the temperature inside the dilution chamber.

[0007] In a preferred embodiment, the first refrigerant is at least one of the following substances: ammonium nitrate, potassium nitrate, and ammonium chloride, and the second refrigerant is water.

[0008] In a preferred embodiment, the dilution bottle is made of one of the following materials: PP, HDPE, and the separator is made of one of the following materials: LDPE, PP, aluminum foil, PE composite film.

[0009] In a preferred embodiment, a heat-insulating film layer is fixed to the outside of the dilution bottle, and the heat-insulating film layer is any one of the following materials: EVA foam sheet, rubber and plastic insulation cotton with aluminum foil coating, and aluminum foil composite bubble film.

[0010] In a preferred embodiment, an observation window is provided inside the second cooling chamber, and a clearance hole is provided in the heat insulation film layer. The clearance hole and the observation window are adapted to each other, and the observation window is configured to be able to observe the interior of the dilution chamber.

[0011] In a preferred embodiment, the dividing assembly includes a cover plate, a knob, a linkage rod, and a cutter head. The cover plate is rotatably connected to the upper end of the first cooling chamber and seals the mixing chamber, creating a sealed space inside the mixing chamber. The knob is fixed to the upper end of the cover plate, and a guide hole is provided inside the cover plate. The linkage rod is slidably connected inside the guide hole, and the cutter head is fixed inside the linkage rod. The cutter head and the separating membrane are adapted to each other, and initially, the cutter head and the separating membrane do not contact each other.

[0012] In a preferred embodiment, the outer side of the knob is evenly provided with multiple anti-slip textures, the lower end of the cover plate is fixed with a sealing ring, and the linkage rod passes through the interior of the sealing ring.

[0013] In a preferred embodiment, the sealing ring is made of any one of the following materials: butyl rubber or silicone.

[0014] In a preferred embodiment, the sampling assembly includes a plug, a connecting rod, and a sampling head. The plug is assembled at the upper end of the dilution chamber, the connecting rod is fixed at the lower end of the plug, and the sampling head is fixed at the lower end of the connecting rod on the outside. A threaded cap is fixed at the lower end of the outer side of the plug, and the threaded cap is threadedly connected to the dilution bottle. A solution tube is fixed at the upper end of the outer side of the plug. The solution tube and the plug constitute a liquid storage chamber, and the liquid storage chamber is filled with diluent. A break-off tube is fixed inside the plug, and the upper end of the break-off tube extends through the plug into the solution tube. After the break-off tube breaks, the diluent flows out through the inside of the break-off tube to the outside of the solution tube.

[0015] In a preferred embodiment, the lower end of the plug is provided with a clearance groove, and the clearance groove and the knob, as well as the clearance groove and the linkage rod, are mutually compatible.

[0016] The technical effects achieved by this invention are as follows: This invention uses a linkage rod to puncture the diaphragm with a blade, and a knob to cut the diaphragm with the blade. This allows the first refrigerant inside the first cooling chamber to flow into the second cooling chamber. The second refrigerant absorbs heat during the dissolution process, creating a low-temperature environment inside the dilution chamber. This facilitates the low-temperature storage of fecal samples, ensuring their validity. Furthermore, patients do not need to carry an additional low-temperature insulation device when going out, reducing the burden of carrying it and improving the ease of use of the device. This invention effectively reduces the ingress of external heat by setting a heat insulation film layer on the outside of the dilution bottle, further ensuring the stability of the low-temperature environment inside the dilution chamber and extending the low-temperature storage time. Through the observation window opened inside the second cooling chamber and the avoidance hole opened in the heat insulation film layer, medical staff or users can directly observe the state of the fecal sample inside the dilution chamber without opening the device, avoiding the entry of external air and bacteria, and ensuring the purity of the sample and the accuracy of the test. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the dilution bottle and the dividing assembly of the present invention; Figure 4 This is a cross-sectional view of the internal structure of the dilution bottle of the present invention; Figure 5 This is an exploded view of the internal structure of the dilution bottle of this invention; Figure 6 This is a partial enlarged structural diagram of the dilution bottle of the present invention; Figure 7 This is a schematic diagram of the structure of the segmentation component of the present invention; Figure 8 This is an exploded view of the structure of the segmentation component of the present invention; Figure 9 This is a schematic diagram of the sampling component of the present invention; Figure 10 This is a cross-sectional view of the sampling component of the present invention; Figure 11 This is an exploded view of the sampling component of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 100. Dilution bottle; 101. Dilution chamber; 102. Mixing chamber; 103. Separator membrane; 104. First refrigeration chamber; 105. Second refrigeration chamber; 106. Discharge port; 107. End cap; 108. Observation window; 109. Annular groove; 200. Segmentation component; 201. Cover plate; 202. Knob; 203. Linkage rod; 204. Cutting head; 205. Guide hole; 206. Sealing ring; 300. Sampling components; 301. Plug; 302. Connecting rod; 303. Sampling head; 304. Threaded cap; 305. Solution tube; 306. Broken tube; 307. Clearance groove. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0023] Please see the appendix Figures 1 to 5 As shown, this is the first embodiment of the present invention. This embodiment provides a fecal sample collection device, including a dilution bottle 100. The interior of the dilution bottle 100 has a dilution chamber 101 and a mixing chamber 102 sequentially formed from the inside to the outside. A separator 103 is fixed inside the mixing chamber 102. The mixing chamber 102 is divided into a first cooling chamber 104 and a second cooling chamber 105 by the separator 103. The first cooling chamber 104 is located above the second cooling chamber 105. The first cooling chamber 104 is filled with a first refrigerant, and the second cooling chamber 105 is filled with a second refrigerant. An outlet 106 is integrally formed at the lower end of the dilution bottle 100, and the outlet 106 is interconnected with the dilution chamber 101. An end cap 107 is detachably fitted onto the outside of the outlet 106 via a transition fit. The device also includes: A dividing assembly 200 is assembled at the upper end inside the dilution bottle 100. The dividing assembly 200 is configured to puncture the dividing membrane 103 to mix the first and second refrigerants. The sampling component 300 is mounted on the upper end of the dilution bottle 100 and located on the upper end of the dividing component 200. The sampling component 300 is configured to sample feces and seal the inside of the dilution chamber 101. The cooperation between the sampling component 300 and the end cap 107 forms a sealed space inside the dilution chamber 101. The first and second refrigerants, when mixed, can absorb heat and reduce the temperature inside the dilution chamber 101.

[0024] In this embodiment, when a patient needs to have a stool sample collected while out and about, the sampling assembly 300 is removed from the top of the dilution bottle 100. The stool sample is collected using the sampling assembly 300, keeping the opening of the dilution chamber 101 facing upwards. The dividing assembly 200 is then operated to puncture the dividing membrane 103, allowing the first and second refrigerants inside the first and second cooling chambers 104 and 105 to mix. The mixture absorbs heat, creating a low-temperature environment inside the dilution chamber 101. The sampling assembly is then repositioned. The device 300 is mounted on the upper end of the dilution bottle 100, allowing the fecal sample to be stored inside the low-temperature dilution chamber 101. Patients can then promptly send the device and the fecal sample inside for testing. This design eliminates the need for patients to carry an additional low-temperature insulation device when traveling, greatly reducing their carrying burden and improving ease of use. Furthermore, the mixing of the first and second refrigerants effectively lowers the temperature inside the dilution chamber 101, ensuring that the fecal sample remains in a low-temperature environment for a short period, thus improving the preservation quality of the sample and meeting the requirements for high-quality sample delivery.

[0025] In a preferred embodiment, the first refrigerant is at least one of the following substances: ammonium nitrate, potassium nitrate, and ammonium chloride, and the second refrigerant is water. In this embodiment, the first refrigerant is preferably ammonium nitrate.

[0026] In this embodiment, after the operating segmentation component 200 punctures the separating membrane 103, the second refrigerant (water) located inside the first refrigerant chamber 104 flows into the second refrigerant chamber 105 under the action of gravity. After the second refrigerant and the first refrigerant (ammonium nitrate) are mixed, the first refrigerant dissolves in the second refrigerant. The dissolution process absorbs heat from the surrounding environment (the process of dissolution endothermic is a physical change, not a chemical reaction), which causes the temperature inside the dilution chamber 101 to drop rapidly, thereby creating a low-temperature environment inside the dilution chamber 101 to facilitate the low-temperature storage of fecal samples and ensure the validity of the fecal samples.

[0027] It should be noted that the ammonium nitrate can be in at least one of the following forms: coarse crystalline particles with a particle size of 1 mm to 5 mm, fine powder particles with a particle size of 100 μm to 500 μm (as in the dilution flask), and ultrafine powder particles with a particle size of <50 μm. In this embodiment, the preferred form of the ammonium nitrate is a combination of coarse crystalline particles with a particle size of 1 mm to 5 mm and ultrafine powder particles with a particle size of <50 μm. The coarse crystalline particles dissolve slowly, which can effectively prolong the duration of the heat absorption process, while the ultrafine powder particles dissolve quickly, which can rapidly reduce the temperature inside the dilution chamber 101.

[0028] Furthermore, the solid-liquid ratio of ammonium nitrate and water can be adjusted according to actual usage requirements. In this embodiment, the solid-liquid ratio of ammonium nitrate and water is preferably 1:2, and the mixture of ammonium nitrate and water forms a supersaturated system. Of course, this is only one of many embodiments and does not constitute a specific limitation.

[0029] In a preferred embodiment, the dilution bottle 100 is made of one of the following materials: PP (polypropylene) or HDPE (high-density polyethylene), and the separator 103 is made of one of the following materials: LDPE (low-density polyethylene film), PP (polypropylene film), aluminum foil, or PE composite film. In this embodiment, the dilution bottle 100 is preferably made of HDPE, and the separator 103 is preferably made of LDPE.

[0030] In this embodiment, PP, HDPE, and LDPE do not react chemically with ammonium nitrate, allowing the device to store ammonium nitrate for an extended period of time, effectively extending the device's storage life.

[0031] In one specific embodiment, since ammonium nitrate needs to be stored in the dark, carbon black masterbatch can be added to the materials of the dilution bottle 100 and the separator 103 to achieve a light-blocking effect, so as to facilitate the storage of ammonium nitrate.

[0032] In a preferred embodiment, an insulating film layer (not shown in the figure) is fixed to the outside of the dilution bottle 100 by adhesive. The insulating film layer is any one of the following materials: EVA (ethylene-vinyl acetate) foam sheet, rubber and plastic insulation cotton with aluminum foil coating, and aluminum foil composite bubble film. In this embodiment, the insulating film layer is EVA foam sheet.

[0033] In this embodiment, the heat insulation film layer can effectively prevent heat conduction between the dilution bottle 100 and the outside, which is conducive to maintaining the low temperature environment inside the dilution chamber 101 and ensuring the validity of the fecal sample. The heat insulation film layer is preferably made of EVA foam sheet, which can block light while insulating heat, which is conducive to the preservation of ammonium nitrate. In addition, EVA foam sheet has a certain buffering performance, which can provide protection for the dilution bottle 100.

[0034] Please refer to it again. Figures 1 to 5 As shown, the second cooling chamber 105 has an observation window 108 inside, and the heat insulation film layer has a clearance hole, which is compatible with the observation window 108. The observation window 108 is configured to be able to observe the inside of the dilution chamber 101.

[0035] In this embodiment, the observation window 108 is provided to facilitate medical staff and patients to observe the state inside the dilution chamber 101.

[0036] Please refer to it again. Figures 6 to 8As shown, the dividing assembly 200 includes a cover plate 201, a knob 202, a linkage rod 203, and a blade 204. The cover plate 201 is rotatably connected to the upper end of the first cooling chamber 104 and forms a seal on the mixing chamber 102, thus creating a sealed space inside the mixing chamber 102. The knob 202 is fixed to the upper end of the cover plate 201. A guide hole 205 is provided inside the cover plate 201. The linkage rod 203 is slidably connected to the inside of the guide hole 205. The blade 204 is fixed inside the linkage rod 203. A cutting edge is provided on the outer side of the blade 204, and the blade 204 is adapted to the dividing membrane 103.

[0037] Furthermore, in the initial state, the blade 204 and the separator 103 do not come into contact, thereby preventing the blade 204 from accidentally puncturing the separator 103.

[0038] It should be noted that an annular groove 109 is provided at the upper end of the first cooling chamber 104, and the annular groove 109 is adapted to the cover plate 201. The cover plate 201 and the first cooling chamber 104 are rotatably connected through the annular groove 109.

[0039] In this embodiment, when a patient needs to have a stool sample collected while out and about, the sampling component 300 is removed from the top of the dilution bottle 100. The stool sample is collected using the sampling component 300, with the opening of the dilution chamber 101 facing upwards. The linkage rod 203 is pressed, causing it to move downwards. Through the fixed connection between the linkage rod 203 and the blade 204, the linkage rod 203 drives the blade 204 downwards, puncturing the diaphragm 103. The knob 202 is then rotated, and due to the connection between the knob 202 and the cover plate... The knob 202 drives the cover plate 201, the linkage rod 203 and the blade 204 to rotate synchronously around the central axis of the dilution chamber 101. The blade 204 cuts the separator membrane 103, causing the separator membrane 103 to tear. The water inside the first cooling chamber 104 then flows into the second cooling chamber 105. The water and ammonium nitrate mix and absorb heat, creating a low-temperature environment inside the dilution chamber 101 for low-temperature storage of fecal samples.

[0040] Please refer to it again. Figures 7 to 8 The knob 202 has multiple anti-slip textures evenly distributed on its outer side. A sealing ring 206 is fixed at the lower end of the cover plate 201. The linkage rod 203 passes through the interior of the sealing ring 206. The sealing ring 206 and the mixing chamber 102, as well as the sealing ring 206 and the linkage rod 203, are all transition fits.

[0041] In this embodiment, the anti-slip texture increases the friction between the patient's hand and the knob 202, making it easier for the patient to turn the knob 202. The sealing ring 206 improves the sealing performance of the mixing chamber 102, preventing the mixed liquid from flowing out of the mixing chamber 102. At the same time, the cooperation between the cover plate 201 and the sealing ring 206 forms a sealed space inside the mixing chamber 102, effectively preventing leakage of the mixed liquid.

[0042] In a preferred embodiment, the sealing ring 206 is made of any one of the following materials: butyl rubber, silicone. In this embodiment, the sealing ring 206 is preferably made of butyl rubber.

[0043] In this embodiment, the butyl rubber is provided to prevent a chemical reaction between the mixture and the butyl rubber, thus ensuring that the mixing chamber 102 is always sealed.

[0044] Please refer to it again. Figures 9 to 11 The sampling assembly 300 includes a plug 301, a connecting rod 302, and a sampling head 303. The plug 301 is assembled at the upper end of the dilution chamber 101, the connecting rod 302 is fixed to the lower end of the plug 301, and the sampling head 303 is fixed to the lower end of the outer side of the connecting rod 302. A threaded cap 304 is fixed to the lower end of the outer side of the plug 301, and the threaded cap 304 is threadedly connected to the dilution bottle 100. A solution tube 305 is fixed to the upper end of the outer side of the plug 301. The solution tube 305 and the plug 301 constitute a... The liquid storage chamber is filled with diluent. A break tube 306 is fixed inside the plug 301, and the upper end of the break tube 306 extends through the plug 301 into the solution tube 305. A clearance groove 307 is provided at the lower end of the plug 301. The clearance groove 307 and the knob 202, as well as the clearance groove 307 and the linkage rod 203, are mutually compatible. After the break tube 306 is broken, the diluent flows out through the inside of the break tube 306 to the outside of the solution tube 305.

[0045] It should be noted that during use, patients can squeeze the solution tube 305 to cause it to deform elastically. When the broken tube 306 is squeezed, it breaks, and the diluent inside the solution tube 305 can flow into the dilution chamber 101 through the broken tube 306. The materials of the solution tube 305 and the broken tube 306 can refer to the existing technology.

[0046] In this embodiment, the threaded cap 304 is rotated to disconnect the threaded connection between the threaded cap 304 and the dilution bottle 100. The threaded cap 304 is held, and the fecal sample is collected through the sampling head 303. After the collection is completed, the threaded cap 304 and the dilution bottle 100 are reconnected. The solution tube 305 and the broken tube 306 are squeezed, causing the broken tube 306 to break. The diluent inside the solution tube 305 flows into the dilution chamber 101 through the broken tube 306. The state of the diluent and the fecal sample inside the dilution chamber 101 can be observed through the observation window 108 interface. The device does not need to be opened, avoiding the entry of external air and bacteria, thus ensuring the purity of the sample and the accuracy of the detection.

[0047] The working principle of this invention is as follows: When a patient needs to have a stool sample collected while out and about, they rotate the threaded cap 304 to disconnect the threaded connection between the cap 304 and the dilution bottle 100. They then press down on the linkage rod 203, which punctures the diaphragm 103 using the blade 204. Rotating the knob 202 causes the linkage rod 203 and the blade 204 to rotate synchronously, cutting the diaphragm 103. Water from the first cooling chamber 104 flows into the second cooling chamber 105, where ammonium nitrate dissolves and absorbs heat, creating a cooling effect inside the dilution chamber 101. In a low-temperature environment, hold the threaded cap 304 and collect a fecal sample through the sampling head 303. After collection, place the sampling head 303 carrying the fecal sample into the dilution chamber 101, connect the threaded cap 304 and the dilution bottle 100 with threads, squeeze the solution tube 305 and the broken tube 306 to break the broken tube 306, and the diluent inside the solution tube 305 flows into the dilution chamber 101 through the broken tube 306. The patient can then send the fecal sample for testing without the need to carry an additional low-temperature insulation device.

[0048] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A fecal sample collection device, characterized in that: The device includes a dilution bottle (100), wherein a dilution chamber (101) and a mixing chamber (102) are sequentially formed from the inside to the outside of the dilution bottle (100). A separator membrane (103) is fixed inside the mixing chamber (102). The mixing chamber (102) is divided into a first cooling chamber (104) and a second cooling chamber (105) by the separator membrane (103). The first cooling chamber (104) is located above the second cooling chamber (105). The first cooling chamber (104) is filled with a first refrigerant, and the second cooling chamber (105) is filled with a second refrigerant. The device also includes: A dividing assembly (200) is assembled at the upper end inside the dilution bottle (100); A sampling component (300) is mounted on the upper end of a dilution bottle (100) and located on the upper end of a dividing component (200); The first and second refrigeration media, when mixed, can absorb heat and reduce the temperature inside the dilution chamber (101).

2. The fecal sample collection device according to claim 1, characterized in that: The first refrigerant is at least one of the following substances: ammonium nitrate, potassium nitrate, and ammonium chloride; the second refrigerant is water.

3. The fecal sample collection device according to claim 1, characterized in that: The dilution bottle (100) is made of one of the following materials: PP, HDPE, and the separator (103) is made of one of the following materials: LDPE, PP, aluminum foil, PE composite film.

4. The fecal sample collection device according to claim 1, characterized in that: A heat-insulating film layer is fixed to the outside of the dilution bottle (100).

5. A fecal sample collection device according to claim 4, characterized in that: The second cooling chamber (105) has an observation window (108) inside, the heat insulation film layer has a clearance hole, and the clearance hole and the observation window (108) are adapted to each other. The observation window (108) is configured to be able to observe the inside of the dilution chamber (101).

6. A fecal sample collection device according to claim 1, characterized in that: The dividing assembly (200) includes a cover plate (201), a knob (202), a linkage rod (203), and a cutter head (204). The cover plate (201) is rotatably connected to the upper end of the first cooling chamber (104), and the cover plate (201) seals the mixing chamber (102), so that a sealed space is formed inside the mixing chamber (102). The knob (202) is fixed to the upper end of the cover plate (201). A guide hole (205) is provided inside the cover plate (201). The linkage rod (203) is slidably connected to the inside of the guide hole (205). The cutter head (204) is fixed inside the linkage rod (203), and the cutter head (204) and the dividing membrane (103) are adapted to each other. In the initial state, the cutter head (204) and the dividing membrane (103) do not contact each other.

7. A fecal sample collection device according to claim 6, characterized in that: The knob (202) has multiple anti-slip textures evenly distributed on its outer side. The lower end of the cover plate (201) is fixed with a sealing ring (206), and the linkage rod (203) passes through the interior of the sealing ring (206).

8. A fecal sample collection device according to claim 7, characterized in that: The sealing ring (206) is made of any one of the following materials: butyl rubber, silicone.

9. A fecal sample collection device according to claim 6, characterized in that: The sampling assembly (300) includes a plug (301), a connecting rod (302), and a sampling head (303). The plug (301) is assembled at the upper end of the dilution chamber (101). The connecting rod (302) is fixed at the lower end of the plug (301). The sampling head (303) is fixed at the lower end of the connecting rod (302) on the outside. A threaded cap (304) is fixed at the lower end of the plug (301) on the outside, and the threaded cap (304) is threadedly connected to the dilution bottle (100). A solution tube (305) is fixed at the upper end of the plug (301) on the outside. A broken tube (306) is fixed inside the plug (301), and the upper end of the broken tube (306) extends through the plug (301) into the solution tube (305).

10. A fecal sample collection device according to claim 9, characterized in that: The lower end of the plug (301) is provided with a relief groove (307), and the relief groove (307) and the knob (202), as well as the relief groove (307) and the linkage rod (203), are all compatible with each other.

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