Biochemical testing equipment

Abstract

The utility model provides a biochemical testing device, which relates to the technical field of body fluid sample testing devices, including a cup cover, a cup body, a cup bottom separation mechanism and a test strip; the test strip is pre-installed in the cup bottom, and the test strip does not need to be manually assembled during use; a through hole is provided on the separation mechanism, and the inner diameter of the through hole is smaller than the diameter of the spherical water droplet formed by the surface tension of the liquid to be tested in the cup body, and the separation mechanism separates the liquid to be tested from the test strip, ensuring that the liquid to be tested will not contact the test strip during the sampling process. After the sampling is completed, pressure is applied to the cup cover to squeeze the air in the cup body, so that part of the liquid to be tested in the cup body flows into the cup bottom through the through hole, ensuring the detection of the test strip and the liquid to be tested, and at the same time, the liquid to be tested in the cup body will not be contaminated, and a second test can be performed, which alleviates the technical problems of inconvenient body fluid transportation, cumbersome operation steps, easy misoperation, and test failure in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of body fluid sample testing devices, in particular to a biochemical testing device. Background Art

[0002] With the popularization of in vitro diagnostic products, people's demand for in vitro diagnostic products tends to be diversified and simplified, especially the simplification has the characteristics of simple and easy operation. Urine examination is a medical detection method, including routine urine analysis. Urinalysis usually uses multiple test strips to quickly screen and analyze urine, that is, routine urine analysis. The test strip method is a simple and rapid urine screening method. At present, the routine urine test strips check items include pH, protein, occult blood, specific gravity, glucose, ketone bodies, urobilinogen, nitrate, white blood cells, and some test strips also integrate bilirubin and vitamin C; urine examination is of great value for clinical diagnosis, judgment of efficacy and prognosis. Due to different urine examination items, the requirements and processing of urine specimens are also different.

[0003] In the prior art, the instant quantitative sampler can be used to test urine by the user. The sampler includes a urine cup, a folding tube and a test tube. The bottom of the urine cup is directly connected to the folding tube, which is easy to leave urine residue in the folding tube, which is unhygienic. At the same time, the connection between the folding tube and the test tube and the transportation of urine are inconvenient and complicated to operate. In the routine urine test, the test tube has a low liquid level due to the diameter of the tube. The test paper or other equipment cannot directly penetrate into the test tube for testing, and needs to be transferred to other instruments with a small diameter, resulting in cumbersome operation steps and easy misoperation, resulting in test failure. Utility Model Content

[0004] The utility model aims to provide a biochemical testing device to alleviate the technical problems existing in the prior art, such as inconvenient body fluid transportation, complicated operation steps, easy misoperation and test failure.

[0005] The utility model provides a biochemical testing device, comprising: a cup cover, a cup body, a cup bottom partition mechanism and a test strip;

[0006] The cup body is connected to the cup bottom, the partition mechanism is located in the cup body, and the partition mechanism is used to separate the cup body and the cup bottom;

[0007] The test strip is located in the bottom of the cup, the cup body is used to contain the liquid to be tested, and the partition mechanism is provided with a through hole, the inner diameter of which is smaller than the diameter of a spherical water droplet formed by the surface tension of the liquid to be tested in the cup body, so that the liquid to be tested on the partition mechanism is confined in the cup body;

[0008] The cup cover is connected to one end of the cup body away from the cup bottom. The cup cover is used to form atmospheric compression on the cup body so that the liquid to be tested in the cup body flows into the cup bottom through the through hole. The test strip is used to perform contact reaction test on the liquid to be tested.

[0009] In a preferred embodiment of the present utility model, the partition mechanism includes a partition plate;

[0010] The partition plate is linked to the inner wall of the cup body, the partition plate is arranged in a cone shape, and the partition plate is a concave structure along the inner wall of the cup body to the center, and the through hole is located at the central concave point of the partition plate of the conical structure.

[0011] In a preferred embodiment of the present utility model, the cup bottom includes a cup seat and a card slot;

[0012] A detection cavity is formed between the cup seat and the partition plate, the card slot is located on a side surface of the cup seat facing the partition plate, and the test strip is connected to the cup seat through the card slot.

[0013] In a preferred embodiment of the utility model, the card slot includes an end card slot and a middle card slot;

[0014] The end slots are arranged in a U shape, and there are two groups of end slots. The two groups of end slots are arranged opposite to each other, and the two groups of end slots are used to be clamped with the two ends of the test strip, and the middle slot is used to be clamped with the two side walls opposite to the test strip.

[0015] In a preferred embodiment of the present utility model, the partition mechanism further includes a limiting plate;

[0016] One end of the limiting plate is connected to the partition plate, and the other end of the limiting plate is in contact with the card slot. The limiting plate is used to limit the test strip in the card slot.

[0017] In a preferred embodiment of the present utility model, the number of the limiting plates is set corresponding to the sum of the number of the end slots and the middle slots.

[0018] In a preferred embodiment of the present invention, a receiving groove is formed in the cup holder at a position corresponding to the through hole.

[0019] In a preferred embodiment of the present invention, an overflow groove is provided on the cup holder, and the overflow groove is communicated with the containing groove.

[0020] In a preferred embodiment of the present invention, the cup cover has a sealing groove at one end facing the cup body, the cup cover is butted against the cup body, and the sealing groove is annularly sealed along the side wall of the cup body.

[0021] In a preferred embodiment of the present invention, a flexible layer is provided on the surface of the cup cover, and the cup cover changes the atmospheric pressure in the cup body through the flexible layer.

[0022] The biochemical testing device provided by the utility model comprises: a cup cover, a cup body, a cup bottom separation mechanism and a test strip; the cup body is connected to the cup bottom, the separation mechanism is located in the cup body, and the separation mechanism is used to separate the cup body and the cup bottom; the test strip is located in the cup bottom, and the test strip is pre-installed in the cup bottom, and there is no need to manually assemble the test strip during use; the cup body is used to accommodate a liquid to be tested, and a through hole is opened on the separation mechanism, and the inner diameter of the through hole is smaller than the diameter of a spherical water droplet formed by the surface tension of the liquid to be tested in the cup body, so that the liquid to be tested on the separation mechanism is confined in the cup body; the separation mechanism is used to separate the liquid to be tested from the test strip, so as to ensure that the liquid to be tested does not contact the test strip during sampling, The test strip and the cup cover are connected with one end of the cup body away from the bottom of the cup. The cup cover is used to form atmospheric compression on the cup body so that the liquid to be tested in the cup body flows into the bottom of the cup through the through hole. The test strip is used to perform contact reaction test on the liquid to be tested. After sampling, pressure is applied to the cup cover to squeeze the air in the cup body so that part of the liquid to be tested in the cup body flows into the bottom of the cup through the through hole, ensuring that the contact between the test strip and the liquid to be tested begins detection. At the same time, the liquid to be tested in the cup body will not be contaminated, and a second test can be performed, which alleviates the technical problems of inconvenient fluid transportation, cumbersome operation steps, easy misoperation and test failure in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the overall structure of a biochemical testing device provided by an embodiment of the utility model;

[0025] Figure 2 A schematic cross-sectional view of a biochemical testing device provided by an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the structure of the biochemical testing device provided by the embodiment of the utility model without the cup bottom;

[0027] Figure 4 A schematic structural diagram of the cup bottom of a biochemical testing device provided in an embodiment of the utility model.

[0028] Icon: 100-cup cover; 110-sealing groove; 120-flexible layer; 200-cup body; 300-cup bottom; 310-cup seat; 311-accommodating groove; 312-overflow groove; 320-card slot; 321-end card slot; 322-middle card slot; 400-partitioning mechanism; 410-partitioning plate; 411-through hole; 420-limiting plate; 500-test strip. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-Figure 4 As shown, a biochemical testing device provided in this embodiment includes: a cup cover 100, a cup body 200, a cup bottom 300, a partition mechanism 400 and a test strip 500; the cup body 200 is connected to the cup bottom 300, the partition mechanism 400 is located in the cup body 200, and the partition mechanism 400 is used to separate the cup body 200 and the cup bottom 300; the test strip 500 is located in the cup bottom 300, the cup body 200 is used to contain the liquid to be tested, and the partition mechanism 400 is provided with a through hole 411 The inner diameter of the through hole 411 is smaller than the diameter of the spherical water droplet formed by the surface tension of the liquid to be tested in the cup body 200, so that the liquid to be tested on the partition mechanism 400 is confined in the cup body 200; the cup cover 100 is connected to the end of the cup body 200 away from the cup bottom 300, and the cup cover 100 is used to form atmospheric compression in the cup body 200, so that the liquid to be tested in the cup body 200 flows into the cup bottom 300 through the through hole 411, and the test strip 500 is used to perform a contact reaction test on the liquid to be tested.

[0031] It should be noted that the biochemical testing device provided in this embodiment can sample, collect and test the liquid to be tested separately. Specifically, the cup body 200 serves as a sampling structure for the liquid to be tested, and the liquid to be tested can be contained in the cup body 200, wherein the cup bottom 300 is pre-installed with a test strip 500, and two independent cavities are formed between the cup body 200 and the cup bottom 300 by a partition mechanism 400, and a through hole 411 is provided on the partition mechanism 400, and the through hole 411 can hinder the liquid to be tested from passing through when the cup body 200 is in an open environment, that is, the liquid to be tested in the cup body 200 can form a spherical water droplet based on the surface tension of the liquid to be tested under the balanced effect of atmospheric pressure and cannot pass through the through hole 411, and the cup body 200 and the partition mechanism 400 are used to form a spherical water droplet based on the surface tension of the liquid to be tested. The structure 400 realizes the sampling and collection of the liquid to be tested; when the liquid to be tested is collected in the cup body 200, the cup cover 100 is snap-fitted with the cup body 200 to form a sealed connection with the cup body 200, that is, the cup cover 100 can squeeze the atmospheric environment of the cup body 200 during the snap-fitting process, so that the liquid to be tested flows into the cup bottom 300 through the through hole 411 under the action of atmospheric pressure, and the liquid to be tested that enters the cup bottom 300 contacts and reacts with the test strip 500 to complete the test; at the same time, the liquid to be tested that remains in the cup body 200 does not contact and react with the test strip 500, and the liquid to be tested is not contaminated, and a secondary test can be performed; optionally, the liquid to be tested can be urine or other body fluids.

[0032] The biochemical testing device provided in this embodiment includes: a cup cover 100, a cup body 200, a cup bottom 300, a partition mechanism 400 and a test strip 500; the cup body 200 is connected to the cup bottom 300, the partition mechanism 400 is located in the cup body 200, and the partition mechanism 400 is used to separate the cup body 200 and the cup bottom 300; the test strip 500 is located in the cup bottom 300, and the test strip 500 is pre-installed in the cup bottom 300, and there is no need to manually assemble the test strip 500 during use; the cup body 200 is used to accommodate the liquid to be tested, and a through hole 411 is opened on the partition mechanism 400, and the inner diameter of the through hole 411 is smaller than the diameter of the spherical water droplet formed by the surface tension of the liquid to be tested in the cup body 200, so that the liquid to be tested on the partition mechanism 400 is confined in the cup body 200; the liquid to be tested is separated from the test strip 500 by the partition mechanism 400 to ensure that the liquid to be tested is taken out. During the sampling process, the liquid to be tested will not contact the test strip 500. The cup cover 100 is connected to the end of the cup body 200 away from the cup bottom 300. The cup cover 100 is used to form an atmospheric squeeze in the cup body 200, so that the liquid to be tested in the cup body 200 flows into the cup bottom 300 through the through hole 411, and the test strip 500 is used to perform a contact reaction test on the liquid to be tested. After the sampling is completed, pressure is applied to the cup cover 100 to squeeze the air in the cup body 200, so that part of the liquid to be tested in the cup body 200 flows into the cup bottom 300 through the through hole 411, ensuring that the contact detection between the test strip 500 and the liquid to be tested begins. At the same time, the liquid to be tested in the cup body 200 will not be contaminated, and a second test can be performed, which alleviates the technical problems of inconvenient body fluid transportation, cumbersome operation steps, and easy misoperation, which cause test failure in the prior art.

[0033] On the basis of the above embodiments, further, in a preferred embodiment of the utility model, the partition mechanism 400 includes a partition plate 410; the partition plate 410 is connected to the inner wall of the cup body 200, the partition plate 410 is arranged in a cone shape, and the partition plate 410 is a concave structure along the inner wall of the cup body 200 to the center, and the through hole 411 is located at the central concave point of the partition plate 410 of the conical structure.

[0034] In this embodiment, the cup body 200 can be a cylindrical structure, that is, the partition plate 410 is arranged in a ring along the inner wall of the cup body 200, and the partition plate 410 and the cup body 200 can be integrally formed, and the partition plate 410 is used to ensure the separation effect between the cup body 200 and the cup bottom 300; the partition plate 410 adopts a conical structure, wherein the partition plate 410 is a concave structure along the direction from the cup cover 100 to the cup bottom 300, that is, the distance between one end of the partition plate 410 located on the inner wall of the cup body 200 and the cup bottom 300 is greater than the distance between the center of the partition plate 410 and the cup bottom 300, and by setting the through hole 411 at the central concave point of the partition plate 410 with a conical structure, the liquid to be tested in the cup body 200 will all gather at the position of the through hole 411, that is, extend to the four sides of the cup body 200 with the through hole 411 as the center, thereby ensuring that the liquid to be tested is preferentially transported to the cup bottom 300 through the through hole 411 under stress.

[0035] Furthermore, the cup bottom 300 can be made of a transparent material to facilitate observation of the reaction status of the test strip 500. Since the partition plate 410 is a conical plate, when the cup body 200 is inverted, the liquid to be tested in the cup bottom 300 will be dispersed along the surface of the conical plate to the surrounding area of ​​the cup bottom 300 cavity, thereby avoiding the discomfort caused by seeing urine when observing the test strip 500.

[0036] In a preferred embodiment of the present invention, the cup bottom 300 includes a cup seat 310 and a card slot 320; a detection cavity is formed between the cup seat 310 and the partition plate 410, the card slot 320 is located on the side surface of the cup seat 310 facing the partition plate 410, and the test strip 500 is connected to the cup seat 310 through the card slot 320.

[0037] In this embodiment, the cup holder 310 is sealed with the cup body 200, and there is a gap between the cup holder 310 and the partition plate 410, so that a detection cavity is formed between the cup holder 310 and the partition plate 410. The card slot 320 is located on the surface of the cup holder 310, and the card slot 320 can be used to card and install the test strip 500, thereby ensuring the stability of the test strip 500 in the test cavity.

[0038] It should be noted that the test strip 500 can have various forms, such as an immunological or chemical test form for detecting analytes in a sample, such as drugs or related metabolites indicating a physical condition. A test strip 500 can use a variety of materials for liquid transfer; one material of the test strip 500 can be superimposed on another material of the test strip 500, for example, filter paper is superimposed on nitrocellulose; or, an area of ​​the test strip 500 containing at least one material is located behind another area containing at least one different material; the test strip 500 can achieve feedback by adding a solution of a substance that generates a signal to the surface of the application area or immersing one or more materials in a signal solution; since the test strip 500 can adopt a biochemical strip in the prior art, the material of the test strip 500 is not limited here.

[0039] In a preferred embodiment of the present invention, the card slot 320 includes an end card slot 321 and a middle card slot 322; the end card slot 321 is arranged in a U shape, and the end card slot 321 has two groups, and the two groups of end card slots 321 are arranged opposite to each other. The two groups of end card slots 321 are used to be clamped with the two ends of the test strip 500, and the middle card slot 322 is used to be clamped with the two opposite side walls of the test strip 500.

[0040] In this embodiment, the test strip 500 can be a long strip structure, and the distance between the two end slots 321 is adapted to the length of the test strip 500, so that the two ends of the test strip 500 can be clamped in the two end slots 321 of the U-shaped structure, and the middle slot 322 can form a clamping connection in the width direction of the test strip 500, thereby ensuring the stability of the test strip 500 when installed on the cup holder 310.

[0041] Optionally, the number of the intermediate slots 322 can be provided in one or more groups according to the length of the test strip 500 , and the multiple groups of intermediate slots 322 are arranged at intervals along the length direction of the test strip 500 .

[0042] In a preferred embodiment of the present invention, the partition mechanism 400 further includes a limit plate 420 ; one end of the limit plate 420 is connected to the partition plate 410 , and the other end of the limit plate 420 abuts against the slot 320 , and the limit plate 420 is used to limit the test strip 500 in the slot 320 .

[0043] In this embodiment, the limiting plate 420 can be vertically arranged relative to the cup body 200, that is, one end of the limiting plate 420 is fixedly connected to the partition plate 410, and the other end of the limiting plate 420 can abut on the surface of the card slot 320, that is, the limiting plate 420 can abut against the test strip 500 in the card slot 320, and the abutment and limiting of the limiting plate 420 ensures the stability of the test strip 500 in the card slot 320, thereby preventing the test strip 500 from shifting when flushed by the liquid to be tested, so as to avoid the situation where the test strip 500 is not in place.

[0044] Optionally, the limiting plate 420 and the partition plate 410 may be connected in various ways, such as integral molding, bonding or plug-in, etc. Preferably, the limiting plate 420 and the partition plate 410 are connected by integral molding.

[0045] In a preferred embodiment of the present invention, the number of the limiting plates 420 is set corresponding to the sum of the number of the end slots 321 and the middle slots 322 .

[0046] In this embodiment, the limit plates 420 can be arranged at intervals along the length direction of the test strip 500, and each limit plate 420 can correspond to an installation position of a slot 320, that is, a test strip 500 has at least three limit plates 420, which respectively form abutment limits on the two ends of the test strip 500 at the position of the end slot 321, and form abutment limits on the middle of the test strip 500 at the position of the middle slot 322, thereby ensuring the installation stability of the test strip 500 located in the slot 320.

[0047] Optionally, a plurality of test strips 500 may be arranged along the surface of the cup bottom 300 , and each test strip 500 is fixed by a plurality of card slots 320 , and the card slots 320 on each test strip 500 are abutted against and limited by a limiting plate 420 .

[0048] In a preferred embodiment of the present invention, a receiving groove 311 is formed on the cup holder 310 at a position corresponding to the through hole 411 .

[0049] In this embodiment, a receiving groove 311 is provided on the cup base 310, and the receiving groove 311 can receive the liquid to be tested flowing into the through hole 411. The receiving groove 311 can ensure the accommodation and temporary retention of the liquid to be tested. At the same time, the volume of the receiving groove 311 is smaller than the total volume of the liquid to be tested flowing into the cup bottom 300, so as to ensure that the liquid to be tested can overflow the receiving groove 311 and contact and react with the test strip 500.

[0050] In a preferred embodiment of the present invention, an overflow groove 312 is formed on the cup holder 310 , and the overflow groove 312 is communicated with the receiving groove 311 .

[0051] In this embodiment, the overflow groove 312 can temporarily store the excess liquid to be tested that flows into the cup base 310. The overflow groove 312 can be extended along the surface of the cup base 310. At the same time, the total volume of the overflow groove 312 and the containing groove 311 is smaller than the total volume of the liquid to be tested that flows into the cup bottom 300, so as to ensure that the liquid to be tested can overflow the overflow groove 312 and contact and react with the test strip 500.

[0052] In a preferred embodiment of the present invention, the cup cover 100 has a sealing groove 110 at one end facing the cup body 200 , the cup cover 100 is butted against the cup body 200 , and the sealing groove 110 is annularly sealed along the side wall of the cup body 200 .

[0053] In this embodiment, the cup cover 100 and the cup body 200 can be connected to each other by means of a threaded connection. At the same time, the cup cover 100 ensures the sealing of the opening of the cup body 200 through a sealing groove 110, wherein the sealing groove 110 can be formed by a sealing protrusion and the side wall of the cup cover 100. When the cup cover 100 is screwed into the seal along the opening of the cup body 200, the atmosphere in the cup body 200 will be squeezed to ensure that the liquid to be tested in the cup body 200 enters the interior of the cup bottom 300 through the through hole 411; the cup cover 100 and the cup body 200 that are sealed can ensure that when the cup body 200 is inverted, the liquid to be tested in the cup body 200 will not flow out.

[0054] In a preferred embodiment of the present invention, a flexible layer 120 is disposed on the surface of the cup cover 100 , and the cup cover 100 changes the atmospheric pressure in the cup body 200 through the flexible layer 120 .

[0055] In this embodiment, the flexible layer 120 can be a part of the surface of the cup cover 100, that is, the flexible layer 120 can be deformed by external extrusion. The deformation of the flexible layer 120 can better squeeze the air in the cup body 200 and increase the atmospheric pressure in the cup body 200, so as to control the capacity of the liquid to be tested in the cup body 200 entering the cup bottom 300; optionally, the flexible layer 120 can be a rubber layer or a plastic layer.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A biochemical testing device, characterized in that: include: A cup cover (100), a cup body (200), a cup bottom (300), a partition mechanism (400) and a test strip (500); The cup body (200) is connected to the cup bottom (300), the partition mechanism (400) is located in the cup body (200), and the partition mechanism (400) is used to separate the cup body (200) and the cup bottom (300); The test strip (500) is located in the cup bottom (300); the cup body (200) is used to contain a liquid to be tested; a through hole (411) is provided on the partition mechanism (400); the inner diameter of the through hole (411) is smaller than the diameter of a spherical water droplet formed by the surface tension of the liquid to be tested in the cup body (200), so that the liquid to be tested on the partition mechanism (400) is confined in the cup body (200); The cup cover (100) is connected to one end of the cup body (200) away from the cup bottom (300), and the cup cover (100) is used to form an atmospheric squeeze in the cup body (200) so that the liquid to be tested in the cup body (200) flows into the cup bottom (300) through the through hole (411), and the test strip (500) is used to perform a contact reaction test on the liquid to be tested.

2. The biochemical testing device according to claim 1, characterized in that: The partition mechanism (400) comprises a partition plate (410); The partition plate (410) is connected to the inner wall of the cup body (200), the partition plate (410) is arranged in a conical shape, and the partition plate (410) is concave along the inner wall of the cup body (200) to the center, and the through hole (411) is located at the central concave point of the partition plate (410) of the conical structure.

3. The biochemical testing device according to claim 2, characterized in that: The cup bottom (300) comprises a cup seat (310) and a slot (320); A detection cavity is formed between the cup holder (310) and the partition plate (410), the card slot (320) is located on a side surface of the cup holder (310) facing the partition plate (410), and the test strip (500) is connected to the cup holder (310) via the card slot (320).

4. The biochemical testing device according to claim 3, characterized in that: The card slot (320) comprises an end card slot (321) and a middle card slot (322); The end clamping groove (321) is arranged in a U shape, and has two groups of end clamping grooves (321). The two groups of end clamping grooves (321) are arranged opposite to each other, and the two groups of end clamping grooves (321) are used to clamp with the two ends of the test strip (500), and the middle clamping groove (322) is used to clamp with the two side walls opposite to each other of the test strip (500).

5. The biochemical testing device according to claim 4, characterized in that: The partition mechanism (400) further includes a limiting plate (420); One end of the limiting plate (420) is connected to the partition plate (410), and the other end of the limiting plate (420) is in contact with the card slot (320). The limiting plate (420) is used to limit the test strip (500) in the card slot (320).

6. The biochemical testing device according to claim 5, characterized in that: The number of the limiting plates (420) is arranged corresponding to the sum of the number of the end clamping slots (321) and the middle clamping slots (322).

7. The biochemical testing device according to claim 3, characterized in that: The cup holder (310) is provided with a receiving groove (311) at a position corresponding to the through hole (411).

8. The biochemical testing device according to claim 7, characterized in that: The cup base (310) is provided with an overflow groove (312), and the overflow groove (312) is communicated with the containing groove (311).

9. The biochemical testing device according to any one of claims 1 to 8, characterized in that: The cup cover (100) has a sealing groove (110) at one end facing the cup body (200); the cup cover (100) is butted against the cup body (200), and the sealing groove (110) forms an annular seal along the side wall of the cup body (200).

10. The biochemical testing device according to claim 9, characterized in that: A flexible layer (120) is provided on the surface of the cup cover (100), and the cup cover (100) changes the atmospheric pressure in the cup body (200) through the flexible layer (120).

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