Excrement sample detection device

Abstract

The utility model relates to the technical field of inspection and detection devices, in particular to an excrement sample detection device which comprises a device body and a bin cover, a diluent bin body and a display cavity located on the side edge of the diluent bin body are arranged in the device body, a reaction bin is arranged at the bottom of the display cavity, and a reagent strip extending into the bottom of the reaction bin is arranged in the display cavity. A sliding channel is axially arranged at the bottom of the diluent bin body; the middle section of the sliding channel is communicated with the bottom of the reaction bin; a piston rod is arranged in the sliding channel in a sliding mode and comprises an upper plug section and a lower plug section, and a quantitative bin is arranged between the upper plug section and the lower plug section. Compared with the prior art, the quantitative diluent extraction device has the beneficial effects that the piston rod with the quantitative bin slides in the sliding channel, quantitative diluent is extracted from mixed diluent in the diluent bin body and reacts with the reagent strip, and the quantitative diluent extraction device has the advantages of quantitative outflow, small detection result error and higher accuracy, and is convenient and rapid in operation process.

Description

Technical Field

[0001] This utility model relates to the field of inspection and testing equipment technology, and in particular to an inspection device. Background Technology

[0002] Fecal testing refers to the medical analysis of feces to understand the function of the digestive system and to assist in the diagnosis of gastrointestinal infections, bleeding, and early screening for colorectal cancer. Apart from some necessary tests that require specialized instruments, such as fecal occult blood and Helicobacter pylori testing, the most commonly used clinical testing methods are monoclonal antibody immunoassay and colloidal gold assay. Currently, there are also mature test strip methods, which allow the test strip to be directly immersed in a fecal suspension, so that the mixture reacts with the reagents on the test strip to produce a colored band. The result can then be interpreted by directly observing the negative control line or comparing it with the standard color band.

[0003] In the prior art, patent number CN202123087110.0, entitled "An Integrated Device for Fecal Sampling and Detection," discloses a carrier, a sampling device, and a detection device. The carrier contains a mixing chamber and a display chamber. The mixing chamber holds a buffer solution and houses the detachable sampling device. The detection device is installed at the bottom of the carrier and connected to both the mixing and display chambers. A test strip from the detection device flows into the display chamber. This method involves mixing the sample taken from the spiral sampling rod with the buffer solution, then pressing the spiral sampling rod to push out the sealing plug, which falls into the detection device, allowing the uniformly mixed sample solution to flow in and react with the test strip.

[0004] To ensure that the fecal sample and buffer solution are mixed evenly, a large amount of buffer solution is often used. However, in the above method, once the plug is opened, the mixed sample solution will all flow into the test strip and react with the reagents on the test strip. It is impossible to control the quantitative outflow of the sample solution. This requires a high sensitivity of the reagents on the test strip. Otherwise, if the sample solution is too large, the test results obtained after reacting with the reagents will have a large error. Utility Model Content

[0005] To address the problem of large errors in test results caused by the inability to quantitatively expel the mixed sample liquid in existing sample testing devices, this invention provides a fecal sample testing device.

[0006] To achieve the above objectives, the following technical solution is provided:

[0007] A fecal sample testing device includes a main body and a cover. The main body has a diluent chamber and a display cavity located on the side of the diluent chamber. A reaction chamber is located at the bottom of the display cavity. A reagent strip extending into the bottom of the reaction chamber is located inside the display cavity. A sliding channel is axially provided at the bottom of the diluent chamber, and the middle section of the sliding channel is connected to the bottom of the reaction chamber. A piston rod is slidably provided in the sliding channel. The piston rod includes an upper stop section and a lower stop section. A quantitative chamber is provided between the upper stop section and the lower stop section.

[0008] Furthermore, the sampler includes a sampling rod inside the cover, a guide channel at the top of the diluent compartment, a funnel-shaped opening at the top of the guide channel, and a sealing ring on the sampling rod that matches the guide channel.

[0009] Furthermore, the middle section of the sliding channel is connected to the bottom of the reaction chamber via an inclined guide plate.

[0010] Furthermore, the opening of the sliding channel near the end of the compartment cover is funnel-shaped.

[0011] Furthermore, the bottom of the main body of the device is provided with a guide cylinder, and a bottom cover is fitted on the outside of the guide cylinder. The piston rod is installed inside the bottom cover, and a concave ring is provided on the inner side of the opening end of the bottom cover. A positioning ring that cooperates with the concave ring is provided on the guide cylinder.

[0012] Furthermore, a reagent strip fixing plate is provided inside the display cavity.

[0013] The beneficial effects of this utility model are as follows: This solution uses a piston rod with a quantitative chamber to slide inside the sliding channel, extracting a quantitative amount of diluent from the diluted solution mixed in the diluent chamber, which then reacts with the reagent strip. It has the advantages of quantitative outflow, small error in detection results, and greater accuracy, and the operation process is convenient and quick. Attached Figure Description

[0014] Appendix Figure 1 This is an external structural diagram of the fecal sample detection device of this utility model;

[0015] Appendix Figure 2 This is a cross-sectional view of the internal structure of the fecal sample detection device of this utility model;

[0016] Appendix Figure 3 for Figure 2 A structural cross-sectional view of another state;

[0017] Appendix Figure 4 for Figure 2 A sectional perspective view;

[0018] In the diagram: 1. Main body of the device; 2. Compartment cover; 3. Diluent compartment; 4. Display chamber; 5. Reaction chamber; 6. Reagent strip; 7. Sliding channel; 8. Bottom cover; 9. Piston rod; 10. Upper stopper section; 11. Lower stopper section; 12. Quantitative compartment; 13. Sampling rod; 14. Guide channel; 15. Sealing ring; 16. Drain plate; 17. Guide cylinder; 18. Threaded adhesive head; 19. Concave ring; 20. Positioning ring; 21. Reagent strip fixing plate. Detailed Implementation

[0019] The present invention provides a detailed description of a fecal sample detection device in conjunction with specific embodiments.

[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a fecal sample testing device includes a main body 1 and a cover 2. The main body 1 has a diluent chamber 3 and a display cavity 4 located on the side of the diluent chamber 3. The bottom of the display cavity 4 has a reaction chamber 5. A reagent strip 6 extending into the bottom of the reaction chamber 5 is provided inside the display cavity 4. A sliding channel 7 is provided axially at the bottom of the diluent chamber 3. The middle section of the sliding channel 7 is connected to the bottom of the reaction chamber 5. A piston rod 9 is slidably provided in the sliding channel 7. The piston rod 9 includes an upper stop section 10 and a lower stop section 11. A quantitative chamber 12 is provided between the upper stop section 10 and the lower stop section 11.

[0021] In this plan, such as Figure 2 , Figure 3 As shown, after taking a fecal sample using the sampling rod 13, the end of the sampling rod 13 with the sample is inserted into the diluent solution inside the diluent chamber 3 for mixing. At this time, the piston rod 9 extends into the sliding channel 7, exposing the upper stopper section 10 in the sliding channel 7. This allows the quantitative chamber 12 to connect with the diluent solution. The quantitative chamber 12 is then filled with the mixed diluent solution. Then, the piston rod 9 is pulled down, and the piston rod 9 can move downward along the sliding channel 7. After the upper stopper section 10 enters the sliding channel 7, it seals the upper end of the quantitative chamber 12, preventing excess diluent solution from entering downward. When the lower sealing end of the quantitative chamber 12 reaches the connection between the sliding channel 7 and the reaction chamber 5, the diluent solution can flow from the quantitative chamber 12 into the reaction chamber 5 and react with the reagent on the reagent strip 6. A color band appears on the reagent strip 6, and the result can be interpreted by comparing the color band with the standard color chart.

[0022] In this embodiment, the main body 1 of the device is a transparent tubular body. Both the upper stopper section 10 and the lower stopper section 11 are sealed to the inner wall of the sliding channel 7 using sealing rings 15. The metering chamber 12 is a cylindrical cavity formed by the concave piston rod 9 between the upper stopper section 10 and the lower stopper section 11, and the size of the chamber matches the preset metering capacity. In this embodiment, the diluent in the diluent chamber 3 contains approximately 2-3 ml of diluent, and the metering chamber capacity is approximately 80 μL (corresponding to the solution volume used in the reaction of reagent strip 6). The upper stopper section 10 has a sealing ring 15 on its outer ring, which prevents any remaining diluent in the diluent chamber 3 from flowing downwards into the reaction chamber 5 after the upper stopper section 10 enters the sliding channel 7. The lower stopper section 11 has two sealing rings 15 on its outer ring to prevent leakage of the diluent to the outside of the main body 1 of the device.

[0023] Preferably, the device includes a sampling rod 13 inside the cover 2, a guide channel 14 on the upper part of the diluent container 3, the upper opening of the guide channel 14 being funnel-shaped, and a sealing ring 15 on the sampling rod 13 that mates with the guide channel 14. The bottom end of the sampling rod 13 has a threaded adhesive head 18 for collecting fecal samples. The sampling rod 13 is fixedly connected to the inside of the cover 2, which can be done by ultrasonic welding. After the cover 2 is installed on the main body 1, the bottom end of the sampling rod 13 can be aligned with the guide channel 14. The funnel-shaped opening of the guide channel 14 not only scrapes away excess feces from the sampling rod 13 but also makes it easier for the sampling rod 13 to be inserted into the diluent container 3. Once the sampling rod 13 is in place, the sealing ring 15 on the sampling rod 13 prevents the diluent from flowing back out and also prevents odors from escaping. When the device is not in use, the sampling rod 13 is installed on the main body 1 of the device along with the chamber cover 2. When in use, the chamber cover 2 and the sampling rod 13 are removed, and the sample is inserted into the diluent chamber 3 after sampling, which provides an integrated function of sampling and detection.

[0024] Preferably, the middle section of the sliding channel 7 is connected to the bottom of the reaction chamber 5 via an inclined guide plate 16. The guide plate 16 is located below the connection between the middle section of the sliding channel 7 and the bottom of the reaction chamber 5 to facilitate the flow of the diluent in the metering chamber 12 to the bottom of the reaction chamber 5. The inclination angle of the guide plate 16 can be between 30° and 70°.

[0025] Preferably, the opening of the sliding channel 7 near the end of the cover 2 is funnel-shaped, so that when the piston rod 9 moves downward, the upper plug section 10 can smoothly enter the sliding channel 7.

[0026] Better, such as Figure 1 , Figure 2 , Figure 3As shown, the bottom of the main body 1 of the device is provided with a guide cylinder 17, and a bottom cover 8 is fitted on the outside of the guide cylinder 17, so the bottom cover 8 can move downward along the guide cylinder 17. The piston rod 9 is fixedly installed inside the bottom cover 8, and a concave ring 19 is provided on the inner side of the opening end of the bottom cover 8. A positioning ring 20 that cooperates with the concave ring 19 is provided on the guide cylinder 17. When the bottom cover 8 drives the piston rod 9 to move downward, the positioning ring 20 on the guide cylinder 17 engages with the concave ring 19 on the bottom cover 8, which will produce a tactile feedback to remind the user that the movement distance has been reached, and to prevent the upper plug section 10 of the piston rod 9 from moving to the connection port between the sliding channel 7 and the reaction chamber 5, so that excess diluent inside the diluent chamber 3 can enter the connection port. At the same time, it can also prevent the remaining diluent volume from leaking out of the main body 1 of the device.

[0027] In this embodiment, the display cavity 4, the diluent chamber 3, and the reaction chamber 5 are all made of transparent material to facilitate observation of the flow of the diluent. A reagent strip fixing plate 21 is provided inside the display cavity 4. The reagent strip 6 is generally long and narrow. After being inserted into the display cavity 4, the reagent strip fixing plate 21 is placed in place to hold the reagent strip 6 in place, so that the reagent strip 6 is close to the inner wall of the display cavity 4 and remains vertical, so as to facilitate observation of the test results.

Claims

1. A device for detecting a fecal sample, comprising a device body (1) and a cartridge cover (2), the device body (1) is internally provided with a diluent cartridge body (3) and a display cavity (4) located at the side of the diluent cartridge body (3), the bottom of the display cavity (4) is provided with a reaction cartridge (5), and the inside of the display cavity (4) is provided with a reagent strip (6) extending into the bottom of the reaction cartridge (5), characterized in that, An axial sliding channel (7) is arranged at the bottom of the diluent container (3), and the middle section of the sliding channel (7) is communicated with the bottom of the reaction container (5); a piston rod (9) is slidably arranged in the sliding channel (7), and the piston rod (9) comprises an upper plug section (10) and a lower plug section (11), and a metering container (12) is arranged between the upper plug section (10) and the lower plug section (11).

2. The fecal sample detection device of claim 1, wherein The inside of the container cover (2) is provided with a sampling rod (13), and the upper part of the diluent container (3) is provided with a guide channel (14), and the upper opening of the guide channel (14) is funnel-shaped, and the sampling rod (13) is provided with a sealing ring (15) matched with the guide channel (14).

3. The fecal sample detection device of claim 1 or 2, wherein The middle section of the sliding channel (7) is communicated with the bottom of the reaction container (5) through an inclined drainage plate (16).

4. The fecal sample detection device of claim 1 or 2, wherein The opening of the sliding channel (7) near the container cover (2) is funnel-shaped.

5. The fecal sample detection device of claim 3, wherein The opening of the sliding channel (7) near the container cover (2) is funnel-shaped.

6. The fecal sample detection device of claim 1, 2, or 5, wherein, A guide cylinder (17) is arranged at the bottom of the device main body (1), the guide cylinder (17) is sleeved with a bottom cover (8) on the outside, the piston rod (9) is installed in the bottom cover (8), a concave ring (19) is arranged on the inner side of the open end of the bottom cover (8), and a positioning ring (20) matched with the concave ring (19) is arranged on the guide cylinder (17).

7. The fecal sample detection device of claim 3, wherein A guide cylinder (17) is arranged at the bottom of the device main body (1), the guide cylinder (17) is sleeved with a bottom cover (8) on the outside, the piston rod (9) is installed in the bottom cover (8), a concave ring (19) is arranged on the inner side of the open end of the bottom cover (8), and a positioning ring (20) matched with the concave ring (19) is arranged on the guide cylinder (17).

8. The fecal sample detection device of claim 4, wherein, A guide cylinder (17) is arranged at the bottom of the device main body (1), the guide cylinder (17) is sleeved with a bottom cover (8) on the outside, the piston rod (9) is installed in the bottom cover (8), a concave ring (19) is arranged on the inner side of the open end of the bottom cover (8), and a positioning ring (20) matched with the concave ring (19) is arranged on the guide cylinder (17).

9. The fecal sample detection device of claims 1, 2, 5, 7, or 8, wherein, A reagent strip fixing plate (21) is arranged in the display cavity (4).

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