Box cover of in-vitro diagnostic kit and in-vitro diagnostic kit

Abstract

The utility model relates to the technical field of in-vitro diagnosis, in particular to a kit cover of an in-vitro diagnosis kit and the in-vitro diagnosis kit. The box cover comprises a cover plate which comprises a through hole; the membrane assembly is used for sealing the through hole, the membrane assembly comprises a membrane element and a connecting element, and the membrane element is detachably connected with the connecting element; and / or the connecting element is detachably connected with the cover plate. Due to the fact that the membrane element and the connecting element are detachably connected, and / or the connecting element and the cover plate are detachably connected, the membrane element can be detached from the cover plate after being installed on the cover plate, the cover plate and the membrane element are separated from each other, and therefore the cover plate and / or the membrane element can be replaced conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of in vitro diagnostics, and in particular to a box cover of an in vitro diagnostic kit and an in vitro diagnostic kit. Background Art

[0002] An in vitro diagnostic kit includes a base and a lid. The base has one or more reagent storage cavities, each of which can independently store reagents required for in vitro diagnosis. The lid is placed on top of the base to seal the one or more reagent storage cavities.

[0003] In the prior art, the box cover includes a cover plate and a membrane element. The cover plate has one or more through holes, which correspond one to one with the reagent storage chambers. The membrane element is arranged on the cover plate and closes the corresponding through holes, thereby sealing the reagent storage chamber corresponding to the through holes.

[0004] However, the cover plate and the membrane element are fixedly connected, which is not conducive to the replacement of the cover plate and the membrane element. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a box cover for an in vitro diagnostic kit and an in vitro diagnostic kit, so that the cover plate and the membrane element are easy to replace.

[0006] In a first aspect, the lid of the in vitro diagnostic kit provided in the embodiments of the present application comprises:

[0007] a cover plate, the cover plate comprising a through hole; and

[0008] A membrane assembly is used to close the through hole, and the membrane assembly includes a membrane element and a connecting element, wherein,

[0009] The membrane element and the connecting element are detachably connected; and / or

[0010] The connection between the connecting element and the cover plate is detachable.

[0011] Compared with the prior art, the lid of the in vitro diagnostic kit of the embodiment of the present application has the following advantages:

[0012] Since the membrane element and the connecting element are detachably connected, and / or the connecting element and the cover plate are detachably connected, the membrane element can be removed from the cover plate after being installed on the cover plate, so that the cover plate and the membrane element are separated from each other, thereby facilitating the replacement of the cover plate and / or the membrane element.

[0013] In a second aspect, an in vitro diagnostic kit provided in an embodiment of the present application includes the box cover according to the first aspect.

[0014] The beneficial effects of the in vitro diagnostic kit of the embodiment of the present application can refer to the beneficial effects of the box cover of the in vitro diagnostic kit according to the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the in vitro diagnostic kit of Example 1 of the present application is shown.

[0016] Figure 2 Shown Figure 1 Cross-sectional view at XX in the middle.

[0017] Figure 3 A top view of the cartridge holder of embodiment 1 of the present application is shown.

[0018] Figure 4 A bottom view of the box cover of Example 1 of the present application is shown.

[0019] Figure 5 Shown Figure 2 A partial enlarged view of point A in the middle.

[0020] Figure 6 A longitudinal cross-sectional view of the connection between the box base and the box cover of Example 2 of the present application is shown.

[0021] Figure 7 A longitudinal cross-sectional view of the connection between the box base and the box cover of Example 3 of the present application is shown.

[0022] Figure 8 A longitudinal cross-sectional view of the connection between the box base and the box cover of Example 4 of the present application is shown.

[0023] Reference numerals:

[0024] 100, box seat;

[0025] 110, elastic buckle; 120, reagent storage chamber; 130, opening; 140, partition; 150, slot;

[0026] 200, box cover;

[0027] 210, cover plate; 211, through hole; 212, first connecting portion; 213, first peripheral wall; 213a, protrusion; 214, hook-shaped element; 215, third connecting portion;

[0028] 220. Membrane assembly; 221. Membrane element; 2211. Incision; 222. Connecting element; 2221. Second connecting portion; 2222. Second peripheral wall; 2222a. Protrusion; 2223. Third peripheral wall; 2224. Top wall; 2225. Connecting groove; 2226. Fourth connecting portion; 2227. Fourth peripheral wall; 2228. Fifth peripheral wall; 2229. Bottom wall; 223. Latch. DETAILED DESCRIPTION

[0029] The technical solutions of the embodiments of the present application will be further described below with reference to the accompanying drawings and through specific implementation methods. It will be understood that the specific embodiments described herein are merely for explaining the embodiments of the present application and are not intended to limit the embodiments of the present application. It should also be noted that, for ease of description, the accompanying drawings only show portions relevant to the embodiments of the present application, not all of them.

[0030] Some directional words are defined in the embodiments of the present application. Unless otherwise stated, the directional words used, such as "up", "down", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of the embodiments of the present application.

[0031] In the embodiments of the present application, unless otherwise expressly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0033] Example 1

[0034] In vitro diagnostic kits (hereinafter referred to as kits) are consumables in the field of in vitro diagnostic technology and are used to store one or more reagents required for in vitro diagnosis. The types of reagents are well known in the art and will not be detailed here.

[0035] During use, the reagent kit is usually placed in a sample analyzer (not shown), and a reagent needle (not shown) of the sample analyzer can be inserted into the interior of the reagent kit from top to bottom to absorb the reagent.

[0036] Figure 1 Schematic diagram of the in vitro diagnostic kit of Example 1 of the present application is shown. Figure 1 As shown, the test kit includes a box base 100 and a box cover 200. The box base 100 is a hollow structure with an upper opening so as to accommodate the reagent inside the box base 100. The box cover 200 is arranged on the top of the box base 100, sealing the upper part of the box base 100 to prevent the reagent inside the box base 100 from contacting the outside air.

[0037] like Figure 1 As shown, an elastic snap 110 is provided on the outer wall of the cassette base 100. Specifically, the elastic snap 110 can be provided on the outer side wall of the cassette base 100. The lower end of the elastic snap 110 is fixedly connected to the outer wall of the cassette base 100, and the upper end of the elastic snap 110 is a free end. There is a distance between the upper end of the elastic snap 110 and the outer wall of the cassette base 100, so that the upper end of the elastic snap 110 can move toward or away from the outer wall of the cassette base 100 to change the distance between the upper end of the elastic snap 110 and the outer wall of the cassette base 100.

[0038] like Figure 1 As shown, a step is provided on the right side wall of the elastic buckle 110 , and the step is used to connect with the mounting slot (not shown) of the sample analyzer.

[0039] The provision of the elastic buckle 110 facilitates installation and removal of the reagent kit and the sample analyzer.

[0040] Specifically, when the test kit needs to be placed on the sample analyzer, the upper end of the elastic clip 110 can be moved toward the outer wall of the box base 100, so that the step on the elastic clip 110 moves toward the outer wall of the box base 100 to avoid interference between the step and the mounting groove. Then the box base 100 is placed in the mounting groove of the sample analyzer, and then the elastic clip 110 is released. The upper end of the elastic clip 110 moves in a direction away from the outer wall of the box base 100, so that the step of the elastic clip 110 abuts against the mounting groove, thereby fixing the box base 100 in the mounting groove.

[0041] When the reagent box needs to be taken out of the sample analyzer, the upper end of the elastic clip 110 can be moved toward the outer wall of the box base 100, so that the step on the elastic clip 110 is separated from the installation groove. The step and the installation groove do not interfere with each other in the vertical direction, so the reagent box can be taken out upward.

[0042] Generally, the cassette base 100 is manufactured in an integrally formed manner, such as by injection molding. The material of the cassette base 100 can be hard plastic, such as polypropylene (PP).

[0043] The elastic buckle 110 can be integrally formed with the box base 100 , that is, the box base 100 and the elastic buckle 110 can be formed simultaneously by one-time injection molding.

[0044] Figure 2Shown Figure 1 Cross-sectional view at AA in the middle. Figure 3 FIG. 1 shows a top view of the cartridge holder 100 according to embodiment 1 of the present application. Figure 2 and Figure 3 As shown, the cartridge holder 100 includes a plurality of reagent storage chambers 120 , which can be arranged side by side. Two adjacent reagent storage chambers 120 are separated by a partition 140 , so that each reagent storage chamber 120 is independent of each other and will not communicate with each other, so that the reagent in one reagent storage chamber 120 will not enter another reagent storage chamber 120 , so that different reagents can be stored in different reagent storage chambers 120 .

[0045] It should be noted that, in the schematic diagram not shown, the cartridge holder 100 may include only one reagent storage chamber 120 .

[0046] like Figure 2 and Figure 3 As shown, the cartridge holder 100 further includes an opening 130 at the top, and each reagent storage cavity 120 corresponds to an opening 130 , through which reagents can be added to the corresponding reagent storage cavity 120 , and the reagent needle of the sample analyzer can be inserted into the reagent storage cavity 120 .

[0047] Figure 4 FIG. 2 shows a bottom view of the box cover 200 according to embodiment 1 of the present application. Figure 4 Combined with Figure 3 As shown, the box cover 200 includes a cover plate 210 and a membrane assembly 220. The cover plate 210 includes through holes 211 corresponding to the openings 130, for example Figure 3 There are three openings 130 in the cover 210, so the cover 210 has three through holes 211. The membrane assembly 220 includes membrane elements 221, and the membrane elements 221 correspond to the through holes 211 one by one, for example Figure 4 The three membrane elements 221 correspond to the three through holes 211 , respectively. The membrane elements 221 substantially cover the through holes 211 , and the reagent needle of the sample analyzer can pass through the membrane elements 221 and extend downward into the cartridge holder 100 .

[0048] like Figure 4 As shown, generally, the membrane element 221 is provided with a through cutout 2211 , through which a reagent needle of a sample analyzer can easily pass through the membrane element 221 to absorb the reagent in the reagent storage chamber 120 .

[0049] In addition, the membrane element 221 is made of elastic material and thus has a certain elasticity. When there is no other object (such as a reagent needle) in the incision 2211, the membrane element 221 can rebound, thereby closing the incision 2211 to protect the reagent.

[0050] Typically, the cover plate 210 is made of a rigid plastic, such as polypropylene (PP), through a single injection molding process. The membrane element 221 is made of an elastic material, such as a thermoplastic elastomer (TPE), through a single injection molding process. The cover plate 210 and membrane element 221 are molded separately and then secured to each other. In other words, in this embodiment of the present application, the cover plate 210 and membrane element 221 are molded separately, rather than being integrally molded.

[0051] The term "integrated molding arrangement" means that the cover plate 210 and the membrane element 221 are formed simultaneously by one injection molding. Such a cover plate 210 and the membrane element 221 are an integral part at the moment of manufacturing completion and do not need to be assembled to form a whole.

[0052] In addition, it should be noted that, in the embodiment of the present application, the cover plate 210 and the membrane element 221 are not fixedly connected by bonding, welding, etc., and the cover plate 210 and the membrane element 221 can be separated from each other.

[0053] The connection relationship between the cover plate 210 and the membrane element 221 is described in detail below.

[0054] Figure 5 Shown Figure 2 A partial enlarged view of point A in the middle, specifically, Figure 5 A longitudinal cross-sectional view of the connection between the box seat 100 and the box cover 200 and the connection between the cover plate 210 and the membrane assembly 220 of embodiment 1 of the present application is shown.

[0055] Combine Figure 4 and Figure 5 The membrane assembly 220 includes a membrane element 221 and a connecting element 222 . The membrane element 221 corresponds to the through hole 211 . The connecting element 222 is connected to the outer periphery of the membrane element 221 . The connecting element 222 is connected to the cover plate 210 so that the membrane assembly 220 covers the through hole 211 .

[0056] In Example 1 of the present application, the membrane element 221 and the connecting element 222 are integrally formed, i.e., the membrane element 221 and the connecting element 222 are inseparable. The membrane element 221 is connected to the cover plate 210 via the connecting element 222. The membrane element 221 and the cover plate 210 are detachably connected, thereby allowing the membrane element 221 to be installed on the cover plate 210 and to be detached from the cover plate 210.

[0057] In addition, the material of the membrane element 221 is the same as the material of the connecting element 222. However, in other embodiments described below, the material of the membrane element 221 and the material of the connecting element 222 may be different.

[0058] In embodiment 1 of the present application, the cover plate 210 and the connecting element 222 are snap-fitted to achieve a detachable connection.

[0059] Specifically, the snap connection between the cover plate 210 and the connecting element 222 can be achieved by: Figure 5 As shown, the cover plate 210 includes a first connecting portion 212, and the connecting element 222 includes a second connecting portion 2221. The first connecting portion 212 is a protrusion, and the second connecting portion 2221 is a groove. The protrusion and the groove engage with each other to seal the connection between the first connecting portion 212 and the second connecting portion 2221. In this way, not only is the connection between the membrane assembly 220 and the cover plate 210 achieved, but the connection between the membrane assembly 220 and the cover plate 210 becomes tighter, which is beneficial for improving the sealing of the connection.

[0060] It should be noted that, in the schematic diagram not shown, the positions of the protrusion and the groove can be exchanged, that is, the first connecting part 212 is a groove, and the second connecting part 2221 is a protrusion. This can also play the role of connecting the membrane assembly 220 and the cover plate 210, and can also improve the sealing effect of the connection between the membrane assembly 220 and the cover plate 210.

[0061] That is to say, when one of the first connection part 212 and the second connection part 2221 is a protrusion and the other of the first connection part 212 and the second connection part 2221 is a groove, not only the connection between the membrane assembly 220 and the cover plate 210 is achieved, but also the sealing of the connection between the membrane assembly 220 and the cover plate 210 can be improved.

[0062] Combine Figure 4 and Figure 5 The cover plate 210 also includes a first circumferential wall 213 that defines the through hole 211. The connecting element 222 also includes a second circumferential wall 2222 corresponding to the first circumferential wall 213. The second circumferential wall 2222 surrounds the inner side of the first circumferential wall 213. The membrane element 221 is connected to the second circumferential wall 2222 to close the hole defined by the second circumferential wall 2222. The second circumferential wall 2222 and the membrane element 221 jointly cover the through hole 211 of the cover plate 210.

[0063] In Example 1 of the present application, the first connection portion 212 is located on the inner circumference of the first peripheral wall 213, and the second connection portion 2221 is located on the outer circumference of the second peripheral wall 2222. In other words, the inner circumference of the first peripheral wall 213 and the outer circumference of the second peripheral wall 2222 are engaged with each other.

[0064] like Figure 5 As shown, the cover plate 210 may further include a third connecting portion 215, which is configured to be connected to the top of the cassette base 100. For example, the third connecting portion 215 is a plug extending downward, and the top of the cassette base 100 has a downwardly recessed slot 150, and the plug is inserted into the slot 150 to achieve connection between the cover plate 210 and the cassette base 100.

[0065] It should be noted that the positions of the above-mentioned plug and slot 150 can be exchanged, that is, the third connecting portion 215 can be an upwardly recessed slot 150, and the top of the box base 100 has an upwardly extending plug.

[0066] like Figure 5 As shown, the connecting element 222 may further include a fourth connecting portion 2226, which surrounds the inner side of the third connecting portion 215. Similar to the third connecting portion 215, the fourth connecting portion 2226 is also configured to be connected to the top of the cassette base 100. For example, the fourth connecting portion 2226 may be a plug extending downward, which is inserted into the slot 150 at the top of the cassette base 100, thereby achieving the connection between the membrane assembly 220 and the cassette base 100.

[0067] In addition, when the cover 210 includes a third connecting portion 215 and the connecting element 222 includes a fourth connecting portion 2226, the lower end of the fourth connecting portion 2226 can extend below the lower end of the third connecting portion 215, so that the third connecting portion 215, the fourth connecting portion 2226 and the top of the box base 100 are abutted in sequence, which can further improve the sealing of the connection between the box base 100 and the box cover 200.

[0068] It can be seen that not only the connection between the cover plate 210 and the membrane element 221 can be installed through the snap connection between the cover plate 210 and the connecting element 222, but also the connection between the box cover 100 and the box base 100 can be installed through the snap connection between the cover plate 210, the connecting element 222 and the box base 100.

[0069] like Figure 4 As shown, when there are multiple through holes 211 , the membrane elements 221 may be connected to each other via a connecting element 222 . Specifically, the membrane elements 221 may be connected together via a fourth connecting portion 2226 .

[0070] It should be noted that in Example 1 of the present application, the connection between the box base 100 and the box cover 200, and the connection between the cover plate 210 and the membrane assembly 220 are both interference fits, thereby improving the sealing of the connections.

[0071] Example 2

[0072] Figure 6 A longitudinal cross-sectional view of the connection between the cassette base 100 and the cassette cover 200 and the connection between the cover plate 210 and the membrane assembly 220 of embodiment 2 of the present application is shown.

[0073] In Example 2 of the present application, the material of the membrane element 221 is different from the material of the connecting element 222 , and the membrane element 221 and the connecting element 222 are integrally formed, for example, by injection molding, ultrasonic welding, or the like.

[0074] The connecting element 222 and the cover plate 210 are detachably connected by snap-fit ​​connection.

[0075] Specifically, if Figure 6 As shown, the second peripheral wall 2222 surrounds the outer side of the first peripheral wall 213 , the first connecting portion 212 is located on the outer peripheral surface of the first peripheral wall 213 , and the second connecting portion 2221 is located on the inner peripheral surface of the second peripheral wall 2222 .

[0076] like Figure 6 As shown, the first connecting portion 212 can be a protrusion 213a on the outer circumferential surface of the first peripheral wall 213, and the second connecting portion 2221 can be a groove above the protrusion 2222a on the inner circumferential surface of the second peripheral wall 2222. Alternatively, the first connecting portion 212 can be a groove below the protrusion 213a on the outer circumferential surface of the first peripheral wall 213, and the second connecting portion 2221 can be a protrusion 2222a on the second outer circumferential wall. In other words, the outer circumferential surface of the first peripheral wall 213 and the inner circumferential surface of the second peripheral wall 2222 are connected in a snap-fit ​​manner.

[0077] like Figure 6 As shown, in Example 2 of the present application, the connecting element 222 further includes a third peripheral wall 2223, which surrounds the inner side of the first peripheral wall 213. The membrane element 221 is disposed on the third peripheral wall 2223. The membrane element 221 and the third peripheral wall 2223 together cover the through hole 211 of the cover plate 210. The second peripheral wall 2222 and the third peripheral wall 2223 are spaced apart and connected by a top wall 2224. The second peripheral wall 2222, the top wall 2224, and the third peripheral wall 2223 together form a connecting groove 2225, into which the upper end of the first peripheral wall 213 is inserted. The outer peripheral surface of the first peripheral wall 213 is engaged with the inner peripheral surface of the second peripheral wall 2222, and the inner peripheral surface of the first peripheral wall 213 is engaged with the outer peripheral surface of the third peripheral wall 2223. As a result, a double-layer seal is formed between the connecting element 222 and the cover plate 210, further improving the sealing effect.

[0078] Example 3

[0079] Figure 7 A longitudinal cross-sectional view of the connection between the box base 100 and the box cover 200 of Example 3 of the present application is shown.

[0080] like Figure 7As shown, in Example 3 of the present application, the membrane element 221 and the connecting element 222 are two independent parts. The membrane element 221 and the connecting element 222 are detachably connected by a snap connection. The connecting element 222 is fixedly connected to the cover plate 210 by ultrasonic welding.

[0081] like Figure 7 As shown, an accommodating space is formed between the connecting element 222 and the cover plate 210 , the shape of the periphery of the membrane element 221 is adapted to the shape of the accommodating space, and the periphery of the membrane element 221 is embedded in the accommodating space, so that the membrane element 221 and the connecting element 222 are snap-fitted.

[0082] In addition, as an alternative to accommodating space, e.g. Figure 7 As shown, the inner ring of the connecting element 222 is provided with a plurality of latches 223 , and the outer ring of the membrane element 221 is provided with a plurality of insertion holes, and the latches 223 are inserted into the insertion holes, so that the membrane element 221 and the connecting element 222 are in a snap-fit ​​connection.

[0083] It should be noted that the accommodating space, the latch member and the socket can be used in combination with each other.

[0084] Example 4

[0085] Figure 8 A longitudinal cross-sectional view of the connection between the box base 100 and the box cover 200 of Example 4 of the present application is shown.

[0086] like Figure 8 As shown, in Example 4 of the present application, the membrane element 221 and the connecting element 222 are two separate parts. The membrane element 221 and the connecting element 222 are detachably connected via a snap-fit ​​connection. Furthermore, the membrane element 221 and the cover plate 210 are also detachably connected via a snap-fit ​​connection. The connecting element 222 and the cover plate 210 are fixedly connected via ultrasonic welding.

[0087] like Figure 8 As shown, in Example 4 of the present application, the connecting element includes a fourth circumferential wall, a fifth circumferential wall and a bottom wall, the fourth circumferential wall is connected to the cover plate, the fifth circumferential wall surrounds the inner circumference of the fourth circumferential wall, the fourth circumferential wall and the fifth circumferential wall are connected through the bottom wall, the outer circumferential surface of the membrane element is snap-connected with the inner circumferential surface of the fourth circumferential wall, and the inner circumferential surface of the membrane element is snap-connected with the outer circumferential surface of the fifth circumferential wall.

[0088] Beneficial effects

[0089] Since the membrane element 211 and the connecting element 222 are detachably connected, and / or the connecting element 222 and the cover plate 210 are detachably connected, the membrane element 221 can be removed from the cover plate 210 after being installed on the cover plate 210, so that the cover plate 210 and the membrane element 221 are separated from each other, thereby facilitating the replacement of the cover plate 210 and / or the membrane element 221.

[0090] The engagement structure formed by the protrusions and grooves between the cover plate 210 and the membrane assembly 220 improves the sealing performance of the cover plate 210 .

[0091] In addition, the engaging structure between the cartridge holder 100 and the cover 210 improves the sealing performance of the entire reagent cartridge.

[0092] In addition, the overall structure of the test kit is simple, the processing of each component is simple, and the overall airtightness and reliability are high after assembly.

[0093] The above is a description of the embodiments of the present application. Through the above description of the disclosed embodiments, professionals and technicians in this field can implement or use the embodiments of the present application. Various modifications to these embodiments will be apparent to professionals and technicians in this field. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present application. Therefore, the embodiments of the present application will not be limited to these embodiments shown herein, but will conform to the widest range consistent with the principles and novel points disclosed herein.

Claims

1. A lid for an in vitro diagnostic kit, characterized in that: The box cover comprises: a cover plate, the cover plate comprising a through hole; and A membrane assembly is used to close the through hole, and the membrane assembly includes a membrane element and a connecting element, wherein, The membrane element and the connecting element are detachably connected; and / or The connection between the connecting element and the cover plate is detachable.

2. The box cover according to claim 1, characterized in that: The membrane element and the connecting element are integrally formed, the material of the membrane element is the same as that of the connecting element, and the connecting element is snap-fitted to the cover plate.

3. The box cover according to claim 2, characterized in that: When the box cover is configured to be installed on the box seat of the in vitro diagnostic kit, there is a snap-fit ​​connection between the connecting element and the box seat, and between the cover plate and the box seat.

4. The box cover according to claim 1, characterized in that: The membrane element and the connecting element are integrally formed, the material of the membrane element and the material of the connecting element are different, and the connecting element and the cover plate are snap-fitted.

5. The box cover according to claim 4, characterized in that: When the box cover is configured to be installed on the box seat of the in vitro diagnostic kit, the cover plate and the box seat are ultrasonically welded.

6. The box cover according to claim 1, characterized in that: The membrane element and the connecting element are connected by snap-fitting, and the connecting element and the cover plate are connected by ultrasonic welding.

7. The box cover according to claim 1, characterized in that: The membrane element and the connecting element, and the membrane element and the cover plate are connected by snap-fitting, and the connecting element and the cover plate are connected by ultrasonic welding.

8. The box cover according to any one of claims 2 to 4, characterized in that: The cover plate includes a first connecting portion, and the connecting element includes a second connecting portion. One of the first connecting portion and the second connecting portion is a protrusion, and the other of the first connecting portion and the second connecting portion is a groove. The protrusion and the groove engage with each other to seal the connection between the first connecting portion and the second connecting portion.

9. The box cover according to claim 8, characterized in that: The cover plate further includes a first peripheral wall defining the through hole, and the connecting element further includes a second peripheral wall, the second peripheral wall surrounding the inner side of the first peripheral wall. Wherein, the inner circumferential surface of the first circumferential wall and the outer circumferential surface of the second circumferential wall are snap-fitted.

10. The box cover according to claim 8, characterized in that: The cover plate further includes a first peripheral wall defining the through hole, and the connecting element further includes a second peripheral wall, the second peripheral wall surrounding the outer side of the first peripheral wall. Wherein, the outer peripheral surface of the first peripheral wall and the inner peripheral surface of the second peripheral wall are snap-fitted.

11. The box cover according to claim 8, characterized in that: The cover plate further includes a first peripheral wall defining the through hole, and the connecting element further includes a second peripheral wall, a third peripheral wall, and a top wall, wherein the second peripheral wall surrounds the outside of the first peripheral wall, the third peripheral wall surrounds the inside of the first peripheral wall, and the second peripheral wall and the third peripheral wall are connected via the top wall. The outer circumferential surface of the first circumferential wall and the inner circumferential surface of the second circumferential wall are in a snap-fit ​​connection, and the inner circumferential surface of the first circumferential wall and the outer circumferential surface of the third circumferential wall are in a snap-fit ​​connection.

12. The box cover according to claim 6 or 7, characterized in that: An accommodating space is formed between the connecting element and the cover plate. The shape of the periphery of the membrane element is adapted to the shape of the accommodating space, and the periphery of the membrane element is embedded in the accommodating space.

13. The box cover according to claim 6 or 7, characterized in that: The inner ring of the connecting element is provided with a plurality of latch members, and the outer ring of the membrane element is provided with a plurality of insertion holes, and the latch members are inserted into the insertion holes.

14. The box cover according to claim 6 or 7, characterized in that: The connecting element also includes a fourth circumferential wall, a fifth circumferential wall and a bottom wall. The fourth circumferential wall is connected to the cover plate, the fifth circumferential wall surrounds the inner circumference of the fourth circumferential wall, and the fourth circumferential wall and the fifth circumferential wall are connected through the bottom wall. The outer circumferential surface of the membrane element is engaged with the inner circumferential surface of the fourth circumferential wall, and the inner circumferential surface of the membrane element is engaged with the outer circumferential surface of the fifth circumferential wall.

15. An in vitro diagnostic kit, characterized in that A box cover comprising the box cover according to any one of claims 1 to 14.

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