Sample detection device

Abstract

This utility model discloses a sample detection device, belonging to the field of medical device technology. The device includes a main body and a sampling component. A tube is connected inside the main body, and a sealing film is connected to the tail end of the tube. The tube and the sealing film form a storage cavity for holding a test solution. The sampling component is used to collect samples. The sampling component can be inserted into the storage cavity from the head end of the tube until it moves to a first position, causing the sample on the sampling component to lyse with the test solution in the storage cavity. The head end of the sampling component adheres to the inner wall of the tube to seal the storage cavity. This utility model, by adhering the head end of the sampling component to the inner wall of the tube to seal the storage cavity, avoids displacement and leakage caused by transportation vibration, improving the sealing performance of the storage cavity. Furthermore, when the sampling component moves from the second position to the third position, the puncture path is perpendicular, and the lysis, positioning, and puncture are physically isolated, preventing process sequence errors.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a sample detection device. Background Technology

[0002] Traditional fecal sample collection devices typically use small, box-shaped containers for sampling, which then require laboratory personnel to dilute the samples and drop them into a reaction chamber to observe the test results. This operational mode, which separates the sampling and testing processes, has significant drawbacks: on the one hand, the excessively long sample transport time leads to low testing efficiency; on the other hand, the separation process can easily cause sample contamination and deterioration of bioactive substances.

[0003] In recent years, new devices integrating sampling and detection functions have emerged on the market. This integrated device mainly consists of the following components: a top cover, a sealed tube, a limiting block, a piston mechanism, a test strip slot, a sealing diaphragm, a base, and a sampling rod. The top cover features a unique double-ring design, comprising an inner ring and a C-shaped outer ring. The inner ring diameter precisely matches the inner diameter of the tube cavity, achieving an airtight seal through the smooth tube wall; the annular gap between the inner and outer rings precisely matches the outer diameter of the tube. The sampling rod is fixed at the center of the inner ring, its diameter tightly fitting the central circular hole of the partition layer. During detection, the user presses down on the sampling rod, driving the piston downwards. The piston rod tip pierces the sealing diaphragm, allowing the pre-filled quantitative detection solution in the piston groove to accurately flow into the receiving slot of the base.

[0004] However, the existing technology has the following technical defects: First, the solution sealing relies on a single piston structure, which is prone to leakage due to vibration during transportation; Second, the sealing film piercing operation relies entirely on the user's touch to press in a straight line, which is prone to deviation and incomplete piercing.

[0005] Based on the aforementioned technical deficiencies, there is an urgent need to develop a new type of sample detection device to effectively solve the problems of insufficient sealing reliability and poor operational accuracy in the existing technology. Utility Model Content

[0006] The purpose of this invention is to provide a sample testing device that has the advantages of good sealing effect and no tilting when the sealing film is punctured, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the specific technical solution of the sample detection device of this utility model is as follows:

[0008] A sample detection device includes a main body and a sampling component. A tube is connected inside the main body, and a sealing film is connected to the tail end of the tube. The tube and the sealing film form a storage cavity for holding a test solution. The sampling component is used to collect samples. The sampling component can be inserted into the storage cavity from the head end of the tube until the sampling component moves to a first position, causing the sample on the sampling component to lyse with the test solution in the storage cavity. The head end of the sampling component adheres to the inner wall of the tube to seal the storage cavity. A test strip is provided inside the main body. After the sample and test solution are lysed, the sampling component rotates to a second position with itself as the center. Then, the sampling component moves to a third position towards the tail end of the tube to puncture the sealing film. The lysed sample liquid flows to the test strip and reacts with the test strip.

[0009] In an optional implementation,

[0010] A base is provided at the tail end of the main body, and the base is connected to the main body. A connecting cavity is provided inside the base. When the sampling component punctures the sealing film, the lysed sample liquid flows through the connecting cavity to the test strip to react with the test strip.

[0011] In an optional implementation,

[0012] The connecting cavity is equipped with a flow channel, through which the lysed sample solution flows to the test strip to react with the test strip.

[0013] In an optional implementation,

[0014] A slot is provided inside the tube, and when the sampler moves to the third position, the sampler engages with the slot.

[0015] In an optional implementation,

[0016] The main body is provided with a positioning groove and a limiting groove. When the sampler moves to the first position, the sampler engages with the positioning groove. When the sampler rotates to the second position, the sampler can slide along the limiting groove, so that the sampler can switch from the second position to the third position.

[0017] In an optional implementation,

[0018] The sampling device includes a handheld part and a reaction part. The handheld part and the reaction part are fixedly connected. The reaction part is used for sample collection. The reaction part is inserted into the storage chamber through the handheld part, so that the sample on the sampling device is broken down with the test solution in the storage chamber. The end of the reaction part can puncture the sealing film.

[0019] In an optional implementation,

[0020] The reaction section includes a rod section and a blade section. The first end of the rod section is fixedly connected to the hand-held part, and the last end of the rod section is fixedly connected to the blade section. The sealing film can be punctured through the blade section.

[0021] In an optional implementation,

[0022] The rod section is provided with a sample slot and a sealing slot. The sample is taken through the sample slot, and a sealing ring is connected to the sealing slot. When the sample is inserted into the storage cavity for pyrolysis, the sealing ring fits against the inner wall of the tube, thus sealing the storage cavity.

[0023] In an optional implementation,

[0024] A disc is connected to the rod section, and a buckle is connected to the disc. When the sample is moved to the third position, the buckle engages with the slot.

[0025] In an optional implementation,

[0026] A limiting component is fixedly connected to the handheld part. When the sampler moves to the first position, the limiting component engages with the positioning groove. When the sampler rotates to the second position, the limiting component and the limiting groove are on the same straight line, and the sampler can slide along the limiting groove, so that the sampler can switch from the second position to the third position.

[0027] This invention has the following advantages: by fitting the head end of the sampling piece to the inner wall of the tube, the storage cavity is sealed, avoiding displacement and leakage caused by transportation vibration, thus improving the sealing performance of the storage cavity. Furthermore, after the sample and test solution are pyrolyzed, the sampling piece rotates to the second position with itself as the center, ensuring that the puncture path is perpendicular when the sampling piece moves from the second position to the third position, and physically isolating the pyrolysis, positioning, and puncture processes to avoid process sequence errors. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the detection device of this utility model;

[0030] Figure 2 This is a schematic diagram of the exploded structure of the detection device of this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the sampling component of this utility model;

[0032] Figure 4 This is a cross-sectional structural diagram of the main body of this utility model;

[0033] Figure 5 This is a schematic diagram of the main body of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the strip card and test strip of this utility model;

[0035] Figure 7 This is a cross-sectional structural diagram of the base of this utility model.

[0036] Icons: 1-Main body; 11-Reaction zone; 12-Detection zone; 13-Tube body; 131-Inlet section; 132-Conical section; 133-Sealing section; 134-Card slot; 14-Positioning slot; 15-Limiting slot; 2-Sampling component; 21-Reaction section; 211-Sealing slot; 212-Sample slot; 213-Knife edge section; 214-Disc; 215-Snap fastener; 22-Handheld part; 23-Limiting component; 5-Packing strip holder; 6-Test strip; 7-Base; 71-Guide channel; 72-Positioning rib; 8-Sealing film. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0041] The following is a reference to the appendix. Figure 1 To be continued Figure 7 This invention describes a sample detection device.

[0042] Existing technology relies on a single piston to block the solution. Transportation vibrations can easily cause seal displacement, which can lead to leakage. Furthermore, when piercing the sealing film 8, the existing technology relies on the user's feel for straight-line pressing, which can easily lead to misalignment and incomplete piercing.

[0043] Therefore, this detection device includes a main body 1 and a sampling element 2. A tube 13 is connected inside the main body 1, and a sealing film 8 is connected to the tail end of the tube 13. The tube 13 and the sealing film 8 form a storage cavity for holding the test solution. The sampling element 2 is used for sample collection. The sampling element 2 can be inserted into the storage cavity from the head end of the tube 13 until the sampling element 2 moves to the first position, so that the sample on the sampling element 2 is broken down with the test solution in the storage cavity. The head end of the sampling element 2 is attached to the inner wall of the tube 13 to seal the storage cavity. A test strip 6 is provided inside the main body 1. After the sample and test solution are broken down, the sampling element 2 rotates to the second position with itself as the center. Then the sampling element 2 moves to the tail end of the tube 13 to the third position to puncture the sealing film 8. The broken sample liquid flows to the test strip 6 and reacts with the test strip 6. Specifically, the sealing film 8 is an aluminum foil film, and the sealing film 8 is sealed by heat pressing.

[0044] Specifically, the main body 1 is divided into a reaction zone 11 and a detection zone 12 by a tube 13. The inside of the tube 13 is the reaction zone 11, and the outside of the tube 13 is the detection zone 12.

[0045] By fitting the head end of the sampling piece 2 to the inner wall of the tube body 13, the storage cavity is sealed, avoiding displacement and leakage caused by transportation vibration, thus improving the sealing performance of the storage cavity. Furthermore, the storage cavity is automatically sealed when the sampling piece 2 is inserted into the storage cavity from the head end of the tube body 13.

[0046] Furthermore, after the sample and test solution are pyrolyzed, the sampling element 2 rotates to the second position with itself as the center to ensure that the puncture path is perpendicular when the sampling element 2 moves from the second position to the third position, and to physically isolate the pyrolysis, positioning and puncture to avoid the process being out of order.

[0047] A base 7 is provided at the tail end of the main body 1. The base 7 is connected to the main body 1. A connecting cavity is provided inside the base 7. When the sampling component 2 punctures the sealing film 8, the lysed sample liquid flows through the connecting cavity to the test strip 6 to react with the test strip 6. Specifically, the main body 1 and the base 7 are connected by cold extrusion through the installation and fixing inclined surface.

[0048] A strip holder 5 is connected inside the connecting cavity. The strip holder 5 is used to install the test strip 6. The end of the strip holder 5 away from the connecting cavity extends into the detection area 12. Specifically, a positioning rib 72 is fixedly connected inside the connecting cavity. The strip holder 5 is inserted into the positioning rib 72, and then the strip holder 5 is fixedly connected to the positioning rib 72 by screws.

[0049] The testing area 12 is equipped with an observation window to observe the reading of the test strip 6.

[0050] The connecting cavity is provided with a flow guide 71. The lysed sample solution flows through the flow guide 71 to the test strip 6 to react with the test strip 6. Preferably, the flow guide 71 is inclined so that the lysed sample solution is guided through the flow guide 71.

[0051] The tube body 13 is provided with an inlet section 131, a tapered section 132 and a sealing section 133. The inlet section 131 is fixedly connected to the large-diameter end of the tapered section 132, and the sealing section 133 is fixedly connected to the small-diameter end of the tapered section 132. When the sampling piece 2 is inserted into the storage cavity from the first end of the tube body 13, it is first inserted through the inlet section 131, and then the position of the sampling piece 2 is gradually constrained by the tapered section 132. When the sampling piece 2 is inserted into place, the first end of the sampling piece 2 fits against the sealing section 133, so that the storage cavity is sealed.

[0052] A slot 134 is provided inside the tube body 13. When the sampler 2 moves to the third position, the sampler 2 engages with the slot 134. Specifically, the slot 134 is provided on the inlet section 131.

[0053] The main body 1 is provided with a positioning groove 14 and a limiting groove 15. When the sampling member 2 moves to the first position, the sampling member 2 engages with the positioning groove 14. When the sampling member 2 rotates to the second position, the sampling member 2 can slide along the limiting groove 15, so that the sampling member 2 switches from the second position to the third position.

[0054] The limiting groove 15 is a straight groove with a length equal to the stroke of the sample 2 as it moves from the second position to the third position.

[0055] The sampling component 2 includes a handheld part 22 and a reaction part 21. The handheld part 22 is fixedly connected to the reaction part 21. The reaction part 21 is used for sample collection. The reaction part 21 is inserted into the storage cavity through the handheld part 22, so that the sample on the sampling component 2 is broken down with the test solution in the storage cavity. The end of the reaction part 21 can puncture the sealing film 8.

[0056] The reaction section 21 includes a rod section and a blade section 213. The first end of the rod section is fixedly connected to the hand-held part 22, and the last end of the rod section is fixedly connected to the blade section 213. The sealing film 8 can be punctured through the blade section 213.

[0057] A sample groove 212 is provided on the rod section for sampling. Specifically, the sample groove 212 is a threaded groove to improve the sample adhesion.

[0058] A sealing groove 211 is provided on the rod section, and a sealing ring is connected to the sealing groove 211. When the sampling piece 2 is inserted into the storage cavity for pyrolysis, the sealing ring fits against the inner wall of the tube body 13, thus sealing the storage cavity. Specifically, when the sampling piece 2 is inserted into the storage cavity for pyrolysis, the sealing ring fits against the sealing section 133, thus sealing the storage cavity. Furthermore, when the sampling piece 2 rotates around itself, the radial pressure of the sealing ring increases, and the leakage rate decreases by orders of magnitude.

[0059] A disc 214 is connected to the rod section, and a buckle 215 is connected to the disc 214. When the sample 2 moves to the third position, the buckle 215 engages with the slot 134.

[0060] A limiting member 23 is fixedly connected to the handheld part 22. When the sampler 2 moves to the first position, the limiting member 23 engages with the positioning groove 14. When the sampler 2 rotates to the second position, the limiting member 23 and the limiting groove 15 are on the same straight line, and the sampler 2 can slide along the limiting groove 15, so that the sampler 2 can switch from the second position to the third position. Specifically, when the limiting member 23 is inserted into the positioning groove 14, the limiting member 23 blocks the piercing action to ensure that the lysis is completed. Then, the sampler 2 is rotated to the second position, and the sampler 2 can slide along the limiting groove 15, so that the sampler 2 can switch from the second position to the third position to pierce the sealing film 8. The lysed sample liquid flows to the test strip 6 and reacts with the test strip 6.

[0061] The test strip 6 and the test solution stored in the storage chamber of the tube 13 are separated by the sealing film 8 before use, which realizes the separation of dry and wet, increases the sealing performance, prevents the test solution from evaporating and extends the shelf life.

[0062] Operating procedures for this testing device:

[0063] First, the sample is taken using the sampling device 2. Then, the sampling device 2 with the sample is inserted into the tube body 13, and at this time, the limiting device 23 is inserted into the positioning groove 14. At the same time, the sealing ring is attached to the inner wall of the tube body 13, so that the sample and the test solution are fully pyrolyzed. After the sample and the test solution are fully pyrolyzed, the sampling device 2 rotates to the second position with itself as the center, so that the sampling device 2 can slide along the limiting groove 15. Then, the sampling device 2 moves along the limiting groove 15 to switch from the second position to the third position. The sealing film 8 is cut through the cutting edge 213 of the sampling device 2. The pyrolyzed sample liquid reacts with the test strip 6 through the rupture and the guide groove 71. A colored band appears on the plate, and then the reading is observed through the observation window.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sample detection device, characterized by, It includes the main body (1) and the sampling part (2); The main body (1) is connected to a tube (13), and the tail end of the tube (13) is connected to a sealing film (8). The tube (13) and the sealing film (8) form a storage cavity for holding the test solution. The sampling element (2) is used for sample collection. The sampling element (2) can be inserted into the storage cavity from the head end of the tube (13) until the sampling element (2) moves to the first position, so that the sample on the sampling element (2) is mixed with the test solution in the storage cavity. The sample is pyrolyzed, and the first end of the sampling element (2) is attached to the inner wall of the tube body (13) to seal the storage cavity. The main body (1) is provided with a test strip (6). After the sample and test solution are pyrolyzed, the sampling element (2) rotates to the second position with itself as the center. Then the sampling element (2) moves to the third position at the tail end of the tube body (13) to puncture the sealing film (8). The pyrolyzed sample liquid flows to the test strip (6) and reacts with the test strip (6).

2. The sample detection device according to claim 1, characterized in that, The main body (1) is provided with a base (7) at its tail end. The base (7) is connected to the main body (1). A connecting cavity is provided in the base (7). When the sampling component (2) punctures the sealing film (8), the lysed sample liquid flows through the connecting cavity to the test strip (6) to react with the test strip (6).

3. The sample detection device according to claim 2, characterized in that, The connecting cavity is provided with a guide groove (71), through which the lysed sample liquid flows to the test strip (6) to react with the test strip (6).

4. The sample detection device according to claim 1, characterized in that, The tube body (13) has a slot (134) inside. When the sampling component (2) moves to the third position, the sampling component (2) engages with the slot (134).

5. The sample detection device according to claim 4, characterized in that, The main body (1) is provided with a positioning groove (14) and a limiting groove (15). When the sampling member (2) moves to the first position, the sampling member (2) engages with the positioning groove (14). When the sampling member (2) rotates to the second position, the sampling member (2) can slide along the limiting groove (15) to switch the sampling member (2) from the second position to the third position.

6. The sample detection device according to claim 5, characterized in that, The sampling device (2) includes a handheld part (22) and a reaction part (21). The handheld part (22) and the reaction part (21) are fixedly connected. The reaction part (21) is used for sample collection. The reaction part (21) is inserted into the storage cavity through the handheld part (22) so that the sample on the sampling device (2) is broken down with the test solution in the storage cavity. The end of the reaction part (21) can puncture the sealing film (8).

7. The sample detection device according to claim 6, characterized in that, The reaction section (21) includes a rod section and a blade section (213). The first end of the rod section is fixedly connected to the hand-held part (22), and the last end of the rod section is fixedly connected to the blade section (213). The sealing film (8) can be punctured through the blade section (213).

8. The sample detection device according to claim 7, characterized in that, The rod section is provided with a sample groove (212) and a sealing groove (211). The sample is taken through the sample groove (212). A sealing ring is connected to the sealing groove (211). When the sampler (2) is inserted into the storage cavity for pyrolysis, the sealing ring fits against the inner wall of the tube (13) to seal the storage cavity.

9. The sample detection device according to claim 7, characterized in that, A disc (214) is connected to the rod section, and a buckle (215) is connected to the disc (214). When the sample (2) moves to the third position, the buckle (215) engages with the slot (134).

10. The sample detection device according to claim 6, characterized in that, A limiting member (23) is fixedly connected to the handheld part (22). When the sampling member (2) moves to the first position, the limiting member (23) engages with the positioning groove (14). When the sampling member (2) rotates to the second position, the limiting member (23) and the limiting groove (15) are on the same straight line, and the sampling member (2) can slide along the limiting groove (15) so that the sampling member (2) can switch from the second position to the third position.

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