Feces quantitative collection device

Abstract

The present invention discloses a feces quantitative collection device, comprising a mixing tube, a sampling tube, and a cannula; the mixing tube has an open upper end, and a diaphragm is provided at the open end; the sampling tube has an open lower end, and a tube cover is provided at the lower end of the sampling tube. The tube cover is detachably mounted on the lower end of the sampling tube, forming a collection cavity between the lower end of the sampling tube and the tube cover, and a plurality of apertures are provided on the outer side of the collection cavity; the sampling tube is mounted on the cannula, and the cannula is detachably mounted on the mixing tube; an appropriate amount of medical liquid is placed in the enclosed space below the diaphragm, and the medical liquid is located in the mixing tube; feces are quantitatively collected through the cooperation of the tube cover and the apertures, and isolation is controlled by the diaphragm. The device has a simple structure, convenient sampling, accurate quantitative determination, and can disperse the sample and diluent or preservation solution in an appropriate proportion.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, and in particular to a feces quantitative collection device. Background Art

[0002] The detection of fecal samples is of great value in clinical diagnosis. In recent years, the research on intestinal microorganisms and human health has entered a new stage. The microorganisms in feces may be both potential diagnostic markers and effective medicines for treating diseases. Therefore, the correct collection of fecal samples is particularly important. The fecal collection devices currently available on the market are relatively simple and have many defects: there is no quantitative design, the amount collected may be too much or too little, and quantitative sample collection cannot be guaranteed. There is no quantitative basis for the components and microorganisms to be tested; the sample is not isolated from the diluent or preservation solution, and the contact time cannot be controlled, resulting in the degradation of some target detection components due to premature dilution; the mixing ratio of the sample and the diluent or preservation solution cannot be controlled, resulting in inconsistent dilution ratios between samples; there is no mixing device; the sample diluent or preservation solution is prone to spillage.

[0003] Patent document 1 (CN106501018A) discloses a feces sampling device, comprising a sampling bottle with a cavity and a sampling rod inserted in the sampling bottle; the sampling bottle is provided with a baffle that divides its cavity into a sampling space and an isolation space, the sampling space is filled with a diluent, one end of the sampling rod passes through the baffle from the isolation space and is immersed in the diluent in the sampling space, and the other end of the sampling rod is threadedly connected and fixed to the bottle mouth of the sampling bottle; the end of the sampling rod located in the sampling space is provided with a feces storage tank, the feces storage tank includes a plurality of straight grooves and a plurality of transverse grooves, the straight grooves are parallel to the length direction of the sampling rod, and the transverse grooves are perpendicular to the length direction of the sampling rod. A sealing ring is provided between the annular protrusion and the annular baffle to separate the annular protrusion from the annular baffle and to seal the sampling space. The bottle mouth of the sampling bottle is provided with an internal thread, and the sampling rod is provided with an external thread that matches the internal thread. The end of the sampling rod is provided with a groove. This patent uses a storage tank to collect feces in a quantitative manner, but it cannot ensure that the feces automatically fill the entire storage tank. Loose feces are difficult to adhere to, and the purpose of quantitative collection cannot be achieved.

[0004] Patent document 2 (CN203191221U) discloses a feces quantitative collection bottle, including a bottle cap, a rubber cap, a transparent plastic bottle body and a bottle base. The rubber cap is provided with four symmetrical circular tubes, the lower wall of the circular tubes is provided with a groove, a support is provided inside the circular tube, the lower part of the support is provided with a convex ring, the upper end of the support is provided with a pressure plate, the outer edge of the lower end of the four symmetrical circular tubes is provided with a circular groove, the circular groove is provided with a disc-shaped protrusion, the disc-shaped protrusion is provided with a sleeve with a gradually reduced diameter, and the center of the rubber cap is provided with a connecting rod. The invention relates to a hollow cavity, a threaded connection is provided at the lower section of the connecting cavity, a hollow tube is provided on the threaded connection, a cylindrical collecting cavity is provided at the lower section of the hollow tube, a piston plate is provided in the cylindrical collecting cavity, a piston rod is provided on the piston plate, the piston rod passes through the hollow tube, a slot is provided at the upper section of the piston rod, an elastic positioning arm is provided at the edge of the connecting cavity, a scale is provided on the transparent plastic bottle body, a water inlet is provided at the edge of the rubber cover, an elastic sealing membrane is provided on the water inlet, a funnel is provided at the lower section of the transparent plastic bottle body, a filter is provided at the root of the funnel, and a water outlet is provided at the lower section of the funnel. This patent uses a cylindrical collecting cavity to quantitatively collect feces, but the collecting cavity with a lower opening is not suitable for collecting loose feces, and cannot ensure that the feces fills the entire cavity. The preservative liquid needs to be added separately after the dilution liquid, which is cumbersome to operate and has poor quantitative reliability.

[0005] Patent document 3 (CN109490005A) discloses a feces quantitative sampling device, which includes: a sampling head, a sampling handle, and a volume control sleeve; the sampling head is a hollow cylindrical structure, with its first end opening downward and the second end sealed by a bottom cover; the outer circumferential surface of the sampling head is provided with a plurality of slits connecting the inner cavity; the sampling handle includes: a slide rod, the bottom of which is connected to the second end of the sampling head; the volume control sleeve is sleeved outside the slide rod and can slide up and down on the slide rod; the inner diameter of the volume control sleeve is equal to the outer diameter of the sampling head. This patent uses a cylindrical structure with slits to quantify feces, which solves the problem of feces filling the cylindrical cavity, but cannot ensure that the feces are flush with the open end of the cylinder, resulting in inaccurate quantification. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, one of the objectives of the present invention is to provide a device capable of accurately and quantitatively collecting stool samples, thereby solving the problems of quantification and isolation. The device is easy to use, can quantitatively collect stool specimens, and can be properly mixed with the diluent or preservation solution to facilitate storage and transportation.

[0007] One of the purposes of the present invention is achieved by the following technical solution:

[0008] A feces quantitative collection device comprises a mixing tube, a sampling tube and a sleeve; the upper end of the mixing tube is open, and the mixing tube is provided with a diaphragm at the open end; the lower end of the sampling tube is open, and a tube cover is provided at the lower end of the sampling tube, and the tube cover is detachably mounted on the lower end of the sampling tube, forming a collection cavity between the lower end of the sampling tube and the tube cover, and a plurality of pores are provided on the outside of the collection cavity; the sampling tube is mounted on the sleeve, and the sleeve is detachably mounted on the mixing tube, and an appropriate amount of medical liquid is placed in the enclosed space below the diaphragm, and the medical liquid is located in the mixing tube; feces are quantitatively collected by the cooperation of the tube cover and the pores, and isolation is controlled by the diaphragm.

[0009] Furthermore, the sampling tube is provided with a sample scraping sleeve, which is located outside the sampling tube and can slide up and down.

[0010] Furthermore, the upper end of the sampling tube is closed, and an embedding hole is provided on the upper end of the sampling tube, and the embedding hole opens upward; the upper end of the sampling tube is provided with a top cover, and the top cover is provided with a protrusion, and the protrusion is snapped into the embedding hole.

[0011] Furthermore, an annular groove is provided at the upper end of the sleeve, and the top cover is embedded in the annular groove.

[0012] Furthermore, a connecting plate is provided in the middle of the collection tube, a sealing ring is provided on the outer edge of the connecting plate, the connecting plate is located in the sleeve, and the sealing ring is fitted to the sleeve.

[0013] Furthermore, the feces quantitative collection device also includes a straw, which is used to collect loose feces.

[0014] Furthermore, the mixing tube is cylindrical.

[0015] Furthermore, the sleeve is provided with an internal thread, the mixing tube is provided with an external thread, and the sleeve is threadedly connected to the mixing tube.

[0016] Furthermore, the pores are circular and distributed on the outer peripheral wall of the collection cavity.

[0017] Furthermore, the cross-sectional size of the tube cover is the same as the cross-sectional size of the collection chamber.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Feces are quantitatively collected by cooperating with the tube cover and the pores, and isolation is controlled by the diaphragm. The structure is simple, sampling is convenient, and quantitative determination is accurate. Furthermore, the sample and the diluent or preservation solution can be dispersed in an appropriate proportion.

[0020] 2. The accuracy of quantitative collection is ensured by sealing the collection chamber and removing excess overflowed samples. At the same time, the sample is isolated from the medical liquid to facilitate mixing when necessary, making the contact of the sample with the diluent or preservation liquid a controllable operation with high flexibility.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a preferred embodiment of the feces quantitative collection device of the present invention;

[0023] Figure 2 for Figure 1 A structural diagram of a straw in the feces quantitative collection device shown;

[0024] Figure 3 for Figure 1 Schematic diagram of the operation of the feces quantitative collection device for thick feces sampling;

[0025] Figure 4 for Figure 1 The schematic diagram of the operation of the feces quantitative collection device for loose stool sampling is shown;

[0026] Figure 5 for Figure 1 The schematic diagram of the feces quantitative collection device for mixing feces with diluent or preservation solution is shown.

[0027] In the figure: 1. Mixing tube; 11. End thread; 12. Diaphragm; 13. Medical liquid; 14. Metal ball; 2. Sampling tube; 21. Collection chamber; 211. Pore; 212. Tube cover; 22. Scraping sleeve; 221. Conical shield; 23. Connecting plate; 24. Embedded hole; 231. Sealing ring; 3. Sleeve; 31. Internal thread; 32. Annular groove; 33. Top cover; 331. Protrusion; 4. Straw; 5. Sampling tray. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] See also Figure 1 The present application discloses a feces quantitative collection device, comprising a mixing tube 1, a sampling tube 2, a sleeve 3 and a straw 4.

[0032] Please continue reading Figure 2 The mixing tube 1 includes an end thread 11, a diaphragm 12, and a medical liquid 13. In actual use, the medical liquid 13 is a diluent or a preservative, and is used in conjunction with a metal ball 14; the diaphragm 12 seals the medical liquid 13 inside the mixing tube 1; the sampling tube 2 includes a collection chamber 21, a scraping sleeve 22, a middle connecting plate 23 and an embedded hole 24 with an upper end opening upward; the peripheral wall of the collection chamber 21 has a circular or other shaped pore 211, and a tube cover 212 is connected to the opening of the collection chamber 21 for closing the collection chamber 21, so that the volume of the collected sample is accurate and fixed; a connecting plate 23 is provided in the middle of the sampling tube 2, and a sealing ring 231 is provided on the outer edge; the sleeve 3 is a tubular device covered on the outside of the sampling tube 2, and is connected to the outer wall of the sampling tube 2. The connecting plate 23 is connected to the sampling tube 2, and the sampling tube 2 can slide up and down in the sleeve 3; the lower end of the sleeve 3 has an internal thread 31, which is adapted to the end thread 11 of the upper end of the mixing tube 1; the upper end of the sleeve 3 is provided with an annular groove 32; a top cover 33 for fixing the upper part, the top cover 33 is annular with a closed upper end and an open lower end, and the bottom of the annular wall of the top cover 33 can be embedded in the annular groove 32 at the upper end of the sleeve 3; a protrusion 331 that can be embedded in the embedding hole 24 is formed inside the closed end of the top cover; by sealing the collection chamber 21, excess overflowed samples are removed to ensure the accuracy of quantitative collection, and at the same time, the sample is isolated from the medical liquid 13, which is convenient for mixing when necessary, making the sample contact with the diluent or preservative liquid a controllable operation with high flexibility.

[0033] In actual use, a scraping sleeve 22 is provided in the middle and lower portion of the connecting plate 23 in the middle of the sampling tube 2, which can slide up and down. The inner diameter of the scraping sleeve 22 is equal to the outer diameter of the sampling tube 2, and a conical shield 221 with a downward opening is provided on the outer periphery of the scraping sleeve 22. The connecting plate 23 is circular. The pipette 4 is a Pasteur pipette with a volume scale. The sampling tube 2 is mounted on the sleeve 3, which is detachably mounted on the mixing tube 1. An appropriate amount of medical liquid 13 is placed in the enclosed space below the diaphragm 12, and the medical liquid 13 is located within the mixing tube 1. Feces is quantitatively collected through the cooperation of the tube cover 212 and the pores 211, and isolation is controlled by the diaphragm 12. The cross-sectional size of the tube cover 212 is the same as the cross-sectional size of the collection chamber 21. The connecting plate 23 is located within the sleeve 3, and the sealing ring 231 is affixed to the inner side of the sleeve 3.

[0034] Preferably, the peripheral wall of the collection cavity 21 of the sampling tube is provided with circular or other shaped pores 211 so that the sample can easily fill the collection cavity 21 .

[0035] Preferably, a tube cover 212 is provided at the opening of the sampling tube 2. The tube cover 212 is circular and flexibly connected to the opening of the sampling tube 2. Specifically, in this embodiment, the tube cover is detachably mounted on the lower end of the sampling tube. The area of ​​the tube cover 212 is equal to the cross-section of the collection chamber 21 and is used to seal the collection chamber 21. The volume of quantitative sampling is V sampling volume = V collection chamber + V pore. Wherein V sampling volume represents the volume of feces to be collected, V collection chamber represents the volume of the collection chamber, and V pore represents the volume of the pore. Since the volume of the collection chamber and the volume of the pore are fixed, and the tube cover 212 is provided at the lower end, quantitative measurement is ensured.

[0036] Please continue reading Figure 3-Figure 5 When sampling is required, first remove the mixing tube 1 and use the sampling tube 2 to sample thick stool. If loose stool is encountered, use the pipette 4 to sample. When sampling thick stool, open the tube cover 212, hold the sleeve 3 and insert the sampling tube 2 into the feces until the sample overflows from the pore 211 of the collection cavity, then press the tube cover 212 at the bottom of the sampling tray 5 to close the collection cavity 21, and then use the scraping sleeve 22 to slide down and scrape off the excess sample, and screw the cover onto the mixing tube 1; when sampling loose stool, use the Pasteur pipette 4 to absorb an appropriate amount (equal to the sampling volume of the collection cavity) of sample, drop it into the fixed space above the diaphragm 12 of the mixing tube 1, and screw the sleeve 3 onto the mixing tube 1; when the stool sample needs to be mixed with the diluent or preservative 13, remove the top cover 33 and press the top of the sampling tube 2 hard to pierce the diaphragm 12, repeatedly invert and mix, and the stool sample will be evenly dispersed in the liquid according to proportion. The structure is novel, the design is ingenious, the applicability is strong, and it is easy to promote.

[0037] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A feces quantitative collection device, comprising a mixing tube, a sampling tube, and a cannula; characterized in that: The feces quantitative collection device further comprises a straw, which is used to collect loose feces; The upper end of the mixing tube is open, and a diaphragm is provided at the open end of the mixing tube; The lower end of the sampling tube is open, and a tube cover is provided at the lower end of the sampling tube, and the tube cover can be detachably installed at the lower end of the sampling tube, and a collection chamber is formed between the lower end of the sampling tube and the tube cover, and the cross-section of the tube cover is the same as the cross-section of the collection chamber, and a plurality of holes are provided on the outside of the collection chamber, and the holes are circular and distributed on the outer peripheral wall of the collection chamber; the sampling tube is provided with a scraping sleeve, and the scraping sleeve is located on the outside of the sampling tube and can slide up and down; a connecting plate is provided in the middle of the sampling tube, and a sealing ring is provided on the outer edge of the connecting plate, and the connecting plate is located in the sleeve, and the sealing ring is fitted into the sleeve; the upper end of the sampling tube is closed, and an embedded hole is provided at the upper end of the sampling tube, and the embedded hole opens upward; a top cover is provided at the upper end of the sampling tube, and the top cover is provided with a protrusion, and the protrusion is snapped into the embedded hole; The sampling tube is installed in the sleeve, and the sleeve can be detachably installed in the mixing tube. The sleeve is a tubular device covered on the outside of the sampling tube and connected to the sampling tube through a connecting plate. The sampling tube slides up and down in the sleeve; the lower end of the sleeve has an internal thread, which is adapted to the end thread of the upper end of the mixing tube, and the upper end of the sleeve is provided with an annular groove for fixing the upper top cover; the top cover is annular with a closed upper end and an open lower end, and the bottom of the annular wall of the top cover is embedded in the annular groove at the upper end of the sleeve, and a protrusion that can be embedded in the embedding hole is formed inside the closed end of the top cover; An appropriate amount of medical liquid is provided in the closed space below the diaphragm, and the medical liquid is located in the mixing tube; feces are quantitatively collected through the cooperation between the tube cover and the pores, and isolation is controlled by the diaphragm.

2. The feces quantitative collection device according to claim 1, characterized in that: The mixing tube is cylindrical.

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