Feces sampling and pretreatment device

Abstract

The excrement sampling and pretreatment device comprises a bottle body, an upper cover body provided with a driving tooth part, a lower cover body, a driving part, a sampling part, a scraping part and a mixing part. According to the device, a plurality of sampling parts with different lengths are used for rotatably digging excrement samples with different depths, and the scraping part is used for automatically scraping redundant samples when the sampling parts are inserted into the bottle body, so that accurate quantification is realized. The driving part drives the rod body to rotate and move up and down through the rotation of the upper cover body, so that a filter screen in the mixing part is driven to do piston motion, high-speed eddy current is generated in a bottle to scour a sample on the sampling part, so that the sample falls off and is uniformly mixed, and meanwhile, a crushing blade mechanically crushes particulate matters. The integrated functions of representative sampling, automatic quantification, full-closed efficient uniform mixing and pretreatment are realized, the problems of inaccurate quantification, non-uniform mixing, high biological safety risk and the like in the traditional operation are effectively solved, and the efficiency and quality of sample pretreatment are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of disease detection, and in particular relates to a fecal sampling and pretreatment device. Background Technology

[0002] In the field of disease detection, fecal testing plays a crucial role in the early screening of certain diseases. The collection and pretreatment of fecal samples are critical preliminary steps. Traditional fecal sampling devices are typically single-function, relying on user judgment for sample volume, resulting in insufficient representativeness and inaccurate quantification. Subsequent sample transfer and mixing processes often require manual operation, which is not only cumbersome and inefficient but also highly susceptible to biosafety risks such as sample contamination and aerosol diffusion. Furthermore, it is difficult to ensure thorough and uniform mixing of the sample and preservation solution, affecting the accuracy of subsequent test results. Current technology lacks an integrated device that combines representative sampling, accurate quantification, and fully enclosed automated mixing and pretreatment functions. Summary of the Invention

[0003] The purpose of this invention is to provide a fecal sampling and pretreatment device.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: A fecal sampling and pretreatment device, comprising a bottle body, an upper cover, a lower cover, a driving component, a sampling component, a scraping component, and a mixing component; The bottle body is provided with the lower cap at the top, the upper part of the bottle body is provided with the scraping component, and the lower part of the bottle body is provided with the mixing component; The lower cover has a circular array of several sampling components at the top circumference, with the lower half of each sampling component passing through the scraping component and located on top of the mixing component. The upper cover is rotatably provided on the top of the lower cover, and the upper cover engages with the sampling component; The drive component is located at the axial center of the upper cover, and the drive component passes through the scraping component and is connected to the mixing component; Rotating the upper cover causes the sampling component to rotate, which in turn causes the mixing component to move up and down and rotate, thereby fully mixing the sample on the sampling component with the solution at the bottom.

[0005] Furthermore, a fixing cylinder is provided at the axial center of the upper cover body, and the inner wall of the fixing cylinder has a plurality of sliding grooves arranged in the vertical direction in a circular array. The driving component includes a driving rod, which includes a rod body. Several fixed sliders are arranged in a circular array on the outer side wall of the top of the rod body, and the fixed sliders are slidably engaged with the sliding groove.

[0006] Furthermore, the driving component also includes a limiting ring, which is detachably provided through the axis of the lower cover, and a limiting pin is provided radially on the inner sidewall of the limiting ring; An inclined annular groove is provided on the outer wall of the rod, and the limiting pin is slidably disposed in the inclined annular groove.

[0007] Furthermore, a connecting rod is fixedly provided in the vertical direction of the bottom axis of the rod body, and two connecting strips are symmetrically arranged radially on the outer side wall of the bottom of the connecting rod; The mixing component includes a pulverizing component and a filter screen; The crushing component includes a rod and a crushing blade. Two inverted L-shaped limiting blocks are symmetrically provided at the top center of the rod, and the inverted L-shaped limiting blocks are slidably engaged with the connecting strip. The bottom sidewall of the rod has a plurality of crushing blades arranged in a circular array, and the bottom of the rod is rotatably connected to the filter screen axis.

[0008] Furthermore, the bottle body includes an upper bottle body and a lower bottle body, the top of the upper bottle body is threadedly connected to the lower cap, and the bottom of the upper bottle body is threadedly connected to the lower bottle body; A sealing ring is fitted on the outer wall of the filter screen, and the sealing ring slides in conjunction with the inner wall of the bottom of the upper bottle.

[0009] Furthermore, the upper bottle body includes a large end at the top and a small end at the bottom, and the scraping component is rotatably provided inside the large end.

[0010] Furthermore, the sampling component includes a drive tooth and an intermediate rod, and the bottom of the inner wall of the upper cover is provided with an annular drive tooth portion; The rotatable circumferential array extending through the top of the lower cover has several intermediate rods, and the top of each intermediate rod is fixedly provided with a drive tooth, which meshes with the annular drive tooth portion.

[0011] Furthermore, the sampling component also includes a half rod and a spoon, with the half rod fixedly disposed at the bottom of the middle rod and the spoon fixedly disposed at the bottom of the half rod.

[0012] Furthermore, the scraping component includes a ring disk and a gathering member. A plurality of the gathering members are arranged in a circumferential array on the ring disk. The gathering members are rotatably connected to the ring disk, and the half rod is slidably disposed inside the gathering member.

[0013] Furthermore, the converging component includes a conical sleeve, a semi-annular small port, and an arc-shaped large port; The conical sleeve is rotatably connected to the annular disk; The tapered sleeve has a large arc-shaped port at the top and a small semi-annular port at the bottom. The shape of the semi-annular small port is adapted to the shape of the half rod, and the semi-annular small port slides in conjunction with the half rod.

[0014] This invention offers the following advantages: It provides an integrated fecal sampling and pretreatment device that combines sampling, quantification, mixing, and pretreatment functions, completely revolutionizing traditional operation methods. The device uses sampling components of varying lengths in a circular array to simultaneously acquire representative samples from both the surface and deeper layers of feces, solving the problem of large deviations in single-point sampling. Its core innovation lies in a unique scraping component that automatically and precisely scrapes away and prevents excess sample exceeding the designed capacity from entering the bottle during the sampling component's insertion, achieving sample standardization and quantification. Furthermore, the device employs a clever mechanical transmission design, converting the rotational motion of the top cover into high-speed up-and-down piston motion of the mixing component. Combined with the pumping effect formed by the filter and sealing ring, this generates a powerful vortex within the bottle, instantly flushing away and thoroughly mixing the sample adhering to the sampling component, achieving efficiency far exceeding manual operation. Simultaneously, the pulverizing blade at the bottom of the mixing component mechanically shears large particles such as fibers, further ensuring the homogeneity of the solution. The entire process is completed within a fully enclosed system, eliminating the need for user contact with the sample, significantly improving operational safety and convenience, and preventing cross-contamination and aerosol generation. The bottle features a split design, facilitating the removal of the mixed solution and meeting the demands of modern laboratories for automated and standardized pretreatment processes. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 yes Figure 1 Enlarged view at point B in the middle; Figure 4 It is a 3D view of the sampling component; Figure 5 It is a 3D diagram of the drive lever; Figure 6 It is a 3D view of the crushing component; Figure 7 This is a 3D view of the convergence component; Figure 8 This is a schematic diagram showing the connection between the upper and lower covers. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0017] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0018] like Figure 1-8 As shown, a fecal sampling and pretreatment device includes a bottle body, an upper cover 1, a lower cover 4, a driving component, a sampling component 5, a scraping component, and a mixing component. The lower cover 4 is located at the top of the bottle body and is threadedly connected to the bottle body. The scraping component is located in the upper half of the bottle body, which can scrape away excess sample (i.e., feces, hereinafter the same) from the sampling component 5 to achieve quantitative analysis. The mixing component is located in the lower half of the bottle body. Several sampling components 5 are arranged in a circular array around the top of the lower cover 4. Each sampling component 5 has a different length to facilitate sampling at different depths and ensure the rationality of sampling. The lower half of the sampling component 5 passes through the scraping component and is located at the top of the mixing component and within the sample solution. During the removal process, excess sample is trapped on the upper part of the scraping component; the upper cover 1 is rotatably provided on the top of the lower cover 4, and the upper cover 1 engages with the sampling component 5. When the upper cover 1 rotates, it drives the sampling component 5 to rotate, and the spoon 504 can scoop up the sample during the rotation; the driving component is provided at the axis of the upper cover 1, and the driving component passes through the scraping component and is connected to the mixing component. When the upper cover 1 rotates, it drives the rod 201 to rotate, thereby driving the connected crushing component 9 to rotate and cut and crush the sample solution; during the rotation of the rod 201, the limiting pin 301 will slide relative to the inclined annular groove 203. Since the limiting pin 301 is stationary, the rod 201 will move up and down (the inclined annular groove 203 is as follows). Figure 5 The diagram shows a tapered groove (with varying heights), which moves the filter 10 up and down. During this movement, the filter 10 acts like a pump, with its piston-like motion generating a powerful, directional liquid flow. This flow is responsible for global, wide-range fluid circulation and rinsing, ensuring that there are no dead zones in the entire bottle. The sample solution generates a high-speed vortex that washes over the spoon 504 and the sample, thoroughly rinsing off the sample adhering to the spoon and dispersing it into the sample solution. This ensures that the sample on the sampling component 5 is fully mixed with the solution at the bottom of the bottle.

[0019] like Figure 1 ,2 As shown, a fixed cylinder 101 is provided at the inner axis of the upper cover 1. The inner wall of the fixed cylinder 101 has a plurality of vertically arranged sliding grooves 1011 arranged in a circular array. The driving component includes a driving rod 2, which includes a rod body 201. A plurality of fixed sliders 202 are arranged in a circular array on the outer side wall of the top of the rod body 201. The fixed sliders 202 slide in cooperation with the sliding grooves 1011. During the rotation of the upper cover 1, due to the restriction of the sliding grooves 1011 and the fixed sliders 202, the rod body 201 will rotate along with it, but this does not affect its vertical sliding. A fixed slot can also be added to the top of the upper cover 1. The fixed slot is adapted to the drive shaft of an external motor, allowing the upper cover 1 to rotate at high speed via the external motor, resulting in a better mixing effect.

[0020] like Figure 1 , 3 As shown, the driving component also includes a limiting ring 3. The limiting ring 3 is detachably provided through the axis of the lower cover 4. A limiting pin 301 is provided radially on the inner sidewall of the limiting ring 3. An inclined annular groove 203 is provided on the outer wall of the rod 201, and the limiting pin 301 is slidably disposed in the inclined annular groove 203. The limiting ring 3 and the lower cover 4 can be connected by a thread, and the limiting pin 301 is inserted from the outer sidewall of the limiting ring 3 into the inclined annular groove 203. In the actual assembly operation of the driving component, the rod 201 is inserted into the limiting ring 3, then the limiting pin 301 is inserted from the radial through hole into the inclined annular groove 203, then the limiting ring 3 is connected to the lower cover 4, the fixed slider 202 slides into the slide groove 1011, and then the upper cover 1 is connected to the lower cover 4. Figure 8 As shown, an inverted T-shaped annular groove (top wedge) can be provided at the top of the lower cover 4, and a matching inverted T-shaped annular block (bottom wedge) can be provided at the bottom of the upper cover 1. When the inverted T-shaped annular block is pressed down, the limiting strips on both sides of the top of the inverted T-shaped annular groove shift slightly to both sides so that the T-shaped annular block can be embedded in the inverted T-shaped annular groove. In addition, in order to make the piston movement frequency of the filter screen 10 higher, the annular groove 203 can be set to be wavy, and the frequency can be changed by adjusting the number of cycles.

[0021] like Figure 1 , 5As shown in Figure 6, a connecting rod 204 is fixedly provided in the vertical direction of the bottom axis of the rod body 201, and two connecting strips 205 are symmetrically arranged radially on the bottom outer side wall of the connecting rod 204; the mixing component includes a crushing component 9 and a filter screen 10; the crushing component 9 includes a rod 901 and a crushing blade 903, and two inverted L-shaped limiting blocks 902 are symmetrically arranged at the top center of the rod 901, and the inverted L-shaped limiting blocks 902 are slidably engaged with the connecting strips 205; a plurality of crushing blades 903 are arranged in a circular array on the bottom side wall of the rod 901, and the bottom of the rod 901 is rotatably connected to the axis of the filter screen 10. Initially, the crushing component 9 is placed in the appropriate position. After the rod 201 contacts the rod 901, during clockwise rotation (from top to bottom), the connecting strip 205 will embed into the inverted L-shaped limiting block 902, causing the rod 901 to rotate together. Simultaneously, the up-and-down movement of the connecting rod 204 will also cause the rod 901 to move up and down. When rotating in the opposite direction, the two will disengage. For ease of connection, the side of the connecting strip 205 closest to the inverted L-shaped limiting block 902 can be wedge-shaped. The crushing blade 903 is in close contact with the top of the filter screen 10. When a larger sample block is brought to this area by the main vortex, the crushing blade 903 comes into play, cutting the larger sample block through direct mechanical shearing force. A sealing ring 1001 is fitted on the outer wall of the filter screen 10. The sealing ring 1001 slides against the inner wall of the bottom of the upper bottle body 6, forming a piston effect, forcing the liquid to flow up and down through the filter screen 10, generating strong vortices and shearing forces, accelerating mixing.

[0022] Furthermore, the bottle body includes an upper bottle body 6 and a lower bottle body 11. The upper bottle body 6 is threadedly connected to the lower cap 4 at its top, and the upper bottle body 6 is threadedly connected to the lower bottle body 11 at its bottom. The upper bottle body 6 and the lower bottle body 11 are designed separately to facilitate the removal of the mixed sample solution through the lower bottle body 11. Large particles or fibers in the sample that cannot be mixed remain on the upper part of the filter screen 10, while only the mixed sample solution is retained in the lower layer.

[0023] like Figure 1 As shown, the upper bottle body 6 includes a large end at the top and a small end at the bottom, with the scraping component rotatably disposed within the large end. The scraping component is located at the junction of the large and small ends, can be removed from the upper part, and can rotate, but cannot move downwards.

[0024] like Figure 1 , 4As shown, the sampling component 5 includes a drive tooth 501 and an intermediate rod 502. An annular drive tooth portion 102 is provided at the bottom of the inner wall of the upper cover 1. A rotatable circular array with several intermediate rods 502 extending through the top of the lower cover 4 is provided. The drive tooth 501 is fixedly mounted on the top of each intermediate rod 502, and the drive tooth 501 meshes with the annular drive tooth portion 102. The sampling component 5 also includes a half-rod 503 and a spoon portion 504. The half-rod 503 is fixedly mounted at the bottom of the intermediate rod 502, and the spoon portion 504 is fixedly mounted at the bottom of the half-rod 503. The half-rod 503 is only half of the intermediate rod 502, and the axis of the complete half-rod 503 coincides with the axis of the intermediate rod 502. The spoon portion 504 is a fitted hemispherical shape, capable of scooping up samples during rotation. Each initial surface faces the rod body 201 to facilitate alignment with the receiving component 8 (at this time, the half-rod 503 and the semi-annular small port 802 have only a small angular deviation). Even if there is a small angular deviation between the half rod 503 (spoon part 504) and the semi-annular small port 802, they will still be coupled by the adaptive rotation of the sampling component 5 and the scraping component during the falling process.

[0025] like Figure 1 , 7 As shown, the scraping component includes a ring disk 7 and a collection member 8. Several collection members 8 are arranged in a circumferential array on the ring disk 7. Each collection member 8 is rotatably connected to the ring disk 7, and a half-rod 503 is slidably disposed within each collection member 8. The rotation axis of the collection member 8 coincides with the rotation axis of the corresponding sampling component 5, allowing them to rotate synchronously. The collection member 8 includes a conical sleeve 801, a semi-annular small port 802, and an arc-shaped large port 803. The conical sleeve 801 is rotatably connected to the ring disk 7. The arc-shaped large port 803 is located at the top of the conical sleeve 801, and the semi-annular small port 802 is located at the bottom of the conical sleeve 801. The shape of the semi-annular small port 802 is adapted to the half-rod 503, and the semi-annular small port 802 slides in conjunction with the half-rod 503. The center of the semi-annular small port 802 coincides with the rotation axis. The large arc-shaped port 803 and the small semi-circular port 802 are connected by a layout. After the sampling component 5 is initially aligned with the large arc-shaped port 803, it falls and contacts the conical sleeve 801, causing it to rotate, so that the spoon part 504 at the bottom of the sampling component 5 is aligned with the small semi-circular port 802, making it easier for it to pass through.

[0026] Working principle: In the initial state, the drive rod 2 is at its highest point. The sampling component 5 is inserted into different layers of the sample. After rotating the upper cover 1 once, the spoon 504 scoops up the sample and removes it. The upper cover 1, lower cover 4, drive component, and sampling component 5 are then inserted into the bottle body as a whole. The sampling component 5 and drive rod 2 pass through the scraping component, which scrapes away excess sample from the sampling component 5. The lower cover 4 is tightened and threaded onto the upper bottle body 6. At this time, the connecting rod 204 abuts against the rod 901. Rotating clockwise ( Figure 6 (As shown from top to bottom) The upper cover 1 allows the connecting strip 205 to be embedded in the inverted L-shaped limiting block 902. Then, continue to rotate the upper cover 1 quickly clockwise to start the mixing component, thereby fully mixing the sample solution and the sample. After a period of time, twist the lower bottle 11 to detach it from the upper bottle 6, transferring the sample solution inside to the next process.

[0027] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, substitutions, or variations made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A fecal sampling and pretreatment device, characterized in that: Bottle body, upper cap (1), lower cap (4), driving component, sampling component (5), scraping component and mixing component; The bottle body is provided with the lower cap (4) at the top, the upper part of the bottle body is provided with the scraping component, and the lower part of the bottle body is provided with the mixing component; The top circumference of the lower cover (4) has a plurality of sampling components (5) arranged in a circular array, the lower half of the sampling component (5) passing through the scraping component and located on top of the mixing component; The upper cover (1) is rotatably provided on the top of the lower cover (4), and the upper cover (1) engages with the sampling component (5). The drive component is provided at the axis of the upper cover (1), and the drive component passes through the scraping component and is connected to the mixing component; Rotating the upper cover (1) causes the sampling component (5) to rotate, and at the same time causes the mixing component to move up and down and rotate, thereby fully mixing the sample on the sampling component (5) with the bottom solution.

2. The fecal sampling and pretreatment device according to claim 1, characterized in that: The upper cover (1) has a fixed cylinder (101) at the inner axis, and the inner wall of the fixed cylinder (101) has a number of sliding grooves (1011) arranged in the vertical direction. The driving component includes a driving rod (2), the driving rod (2) includes a rod body (201), and a plurality of fixed sliders (202) are arranged in a circular array on the outer side wall of the top of the rod body (201), the fixed sliders (202) slidingly engaging with the groove (1011).

3. The fecal sampling and pretreatment device according to claim 2, characterized in that: The driving component also includes a limiting ring (3), and the limiting ring (3) is detachably provided through the axis of the lower cover (4). A limiting pin (301) is provided radially on the inner side wall of the limiting ring (3). An inclined annular groove (203) is provided on the outer wall of the rod (201), and the limiting pin (301) is slidably provided in the inclined annular groove (203).

4. The fecal sampling and pretreatment device according to claim 2, characterized in that: A connecting rod (204) is fixedly provided in the vertical direction of the bottom axis of the rod body (201), and two connecting strips (205) are symmetrically radially provided on the outer side wall of the bottom of the connecting rod (204). The mixing component includes a crushing component (9) and a filter screen (10). The crushing component (9) includes a rod (901) and a crushing blade (903). The top center of the rod (901) is symmetrically provided with two inverted L-shaped limiting blocks (902). The inverted L-shaped limiting blocks (902) are slidably engaged with the connecting strip (205). The bottom sidewall of the rod (901) has a circumferential array of several crushing blades (903), and the bottom of the rod (901) is rotatably connected to the axis of the filter screen (10).

5. The fecal sampling and pretreatment device according to claim 4, characterized in that: The bottle body includes an upper bottle body (6) and a lower bottle body (11). The upper bottle body (6) is threaded to the top of the lower cap (4), and the lower bottle body (11) is threaded to the bottom of the upper bottle body (6). A sealing ring (1001) is fitted on the outer wall of the filter (10), and the sealing ring (1001) slides in cooperation with the inner wall of the bottom of the upper bottle body (6).

6. The fecal sampling and pretreatment device according to claim 5, characterized in that: The upper bottle body (6) includes a large end at the top and a small end at the bottom, and the scraping component is rotatably provided inside the large end.

7. The fecal sampling and pretreatment device according to claim 1, characterized in that: The sampling component (5) includes a drive tooth (501) and an intermediate rod (502), and the bottom of the inner wall of the upper cover (1) is provided with an annular drive tooth (102). The top of the lower cover (4) has a rotatable circumferential array with several intermediate rods (502), and the top of the intermediate rods (502) is fixedly provided with the driving teeth (501), which mesh with the annular driving teeth (102).

8. The fecal sampling and pretreatment device according to claim 7, characterized in that: The sampling component (5) further includes a half rod (503) and a spoon (504). The half rod (503) is fixedly provided at the bottom of the middle rod (502), and the spoon (504) is fixedly provided at the bottom of the half rod (503).

9. The fecal sampling and pretreatment device according to claim 8, characterized in that: The scraping component includes a ring disk (7) and a gathering member (8). The ring disk (7) has a plurality of gathering members (8) arranged in a circular array. The gathering member (8) is rotatably connected to the ring disk (7). The half rod (503) is slidably provided inside the gathering member (8).

10. The fecal sampling and pretreatment device according to claim 8, characterized in that: The gathering member (8) includes a conical sleeve (801), a semi-annular small port (802), and an arc-shaped large port (803). The conical sleeve (801) is rotatably connected to the annular disk (7); The tapered sleeve (801) has an arc-shaped large port (803) at the top and a semi-annular small port (802) at the bottom. The shape of the semi-annular small port (802) is adapted to the shape of the half rod (503), and the semi-annular small port (802) and the half rod (503) are in sliding fit.

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