A biosafety cabinet partitioned operation device to prevent cross-contamination

Abstract

This utility model relates to the field of biological detection technology and discloses a partitioned operation device for a biosafety cabinet to prevent cross-contamination. It includes a cabinet body, a fan mounted on the top of the cabinet body, and an operating table mounted inside the cabinet body. One side of the cabinet body has a liftable door. An exhaust grille is inclinedly mounted on the operating table near the door. Several first partitions are movably mounted vertically on the operating table. A fixing element for securing the first partitions is mounted on the side of the cabinet body away from the door. This utility model effectively reduces the risk of aerosol cross-contamination.

Description

Technical Field

[0001] This utility model relates to the field of biological detection technology, and in particular to a partitioned operation device for a biosafety cabinet to prevent cross-contamination. Background Technology

[0002] Biosafety cabinets are core equipment for biosafety in biological experiments. Through directional airflow, high-efficiency filtration, and a sealed design, they protect operators, experimental samples, and the environment from contamination by harmful microorganisms (such as bacteria, viruses, and fungi). Their structure must meet the protection requirements of different biosafety levels (BSL-1 to BSL-4). The core consists of five main modules: an airflow control system, a filtration system, the cabinet structure, the operating area, and auxiliary functional components. These components work together to achieve the three major goals of "personnel safety, sample safety, and environmental safety."

[0003] The existing biosafety cabinets have an integrated operating area, requiring all test samples to be placed inside the cabinet for testing. Therefore, when testing multiple samples containing microorganisms, there is a risk of aerosol cross-contamination. Utility Model Content

[0004] The purpose of this invention is to provide a biosafety cabinet partition operation device that prevents cross-contamination, thereby reducing the risk of aerosol cross-contamination.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: including a cabinet, a fan installed on the top of the cabinet, and an operating table installed inside the cabinet. A liftable cabinet door is provided on one side of the cabinet. An exhaust mesh plate is inclinedly installed on the end of the operating table near the cabinet door. Several first partitions are movably installed on the operating table in the vertical direction. A fixing member for fixing the first partitions is provided on the side of the cabinet away from the cabinet door.

[0006] A further feature of this invention is that the fixing member includes a first elastic connecting strip that is adsorbed and connected to the inner wall of the cabinet and a first connecting groove formed on the first elastic connecting strip. The first elastic connecting strip is arranged vertically on the inner wall of the cabinet, and the end of the first partition away from the cabinet door is engaged with the first connecting groove.

[0007] A further feature of this invention is that a second partition is movably disposed on one side of the first partition, and a plurality of elongated sliding blocks are disposed on the side of the second partition near the first partition along the horizontal direction, and a plurality of sliding grooves that can cooperate with the sliding blocks are opened on the first partition along the horizontal direction.

[0008] A further feature of this invention is that the longitudinal cross-sectional area of ​​the end of the sliding block closest to the second partition is smaller than the longitudinal cross-sectional area of ​​the end of the sliding block furthest from the second partition.

[0009] A further feature of this invention is that the bottom of the second partition near the cabinet door is provided with an inclined portion that can be movably attached to the exhaust mesh plate.

[0010] A further feature of this invention is that the bottom ends of both the first partition and the second partition are provided with a detachable first sealing strip that can fit into the operating table, and the bottom ends of both the first partition and the second partition are provided with a second connecting groove that can cooperate with the first sealing strip.

[0011] A further feature of this invention is that the top of both the first partition and the second partition is provided with a detachable second sealing strip that can fit against the inner wall of the cabinet, and the top of both the first partition and the second partition is provided with a third connecting groove that can cooperate with the second sealing strip.

[0012] A further feature of this invention is that a long strip-shaped second elastic connecting strip is provided on the inner wall of the cabinet body on the side away from the cabinet door in a horizontal direction. The second elastic connecting strip is adsorbed and connected to the inner wall of the cabinet body. The second elastic connecting strip is provided with a plurality of fourth connecting grooves that can cooperate with the first partition plate one by one. One end of the first partition plate is engaged with the adjacent fourth connecting groove.

[0013] A further feature of this invention is that the number of the second elastic connecting strips is two, with the two second elastic connecting strips located at both ends of the first elastic connecting strip.

[0014] A further feature of this invention is that both the first partition and the second partition are made of transparent PPSU material.

[0015] The beneficial effects of this utility model are:

[0016] 1. By setting up a first partition and fixing components, when different microbial samples need to be tested, several first partitions can be set up according to the experimental requirements. The fixing components fix the first partitions. At the same time, the top and bottom of the first partitions are respectively attached to the inner wall of the cabinet and the operating table, so that the first partitions divide the interior of the cabinet into several spaces. Meanwhile, the fan maintains a slight negative pressure state by absorbing air from the cabinet through the air extraction mesh. Therefore, through the physical isolation of the first partitions and the slight negative pressure state inside the cabinet, when multiple microbial samples need to be tested, each sample can be placed separately, which can greatly reduce the risk of cross-contamination of aerosols during the operation.

[0017] 2. By setting the first elastic connecting strip and the first connecting groove, when the first partition needs to be set, firstly, several first elastic strips are pasted vertically on the inner wall of the cabinet on the side away from the cabinet door. Then, one end of each first partition is sequentially engaged in the first connecting groove of each first elastic connecting strip, thereby realizing the detachable fixing of the first partition. The operation is simple and convenient.

[0018] 3. By setting up a second partition, sliding blocks, and sliding grooves, the width of the first partition only needs to be set to about half the width of the cabinet due to the first partition and the sliding second partition. When multiple microbial samples need to be tested, multiple first partitions can be fixed in sequence in the cabinet using the first elastic connecting strip. Then, the sliding blocks on the second partition are engaged horizontally with the sliding grooves of the first partition. Each microbial sample is then placed in the small compartment formed by the first partition. When the sample needs to be tested, the second partitions located on both sides of the sample are pulled outwards, so that the second partition and the first partition close together to block the sides of the sample, preventing aerosols that may be generated during sample testing from entering the operating space of other microbial samples. Therefore, setting up a second partition can work with the first partition to physically isolate the sides of the microbial sample. At the same time, pushing the second partition can reduce the space required for the sample when it is not being operated. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of a biosafety cabinet partition operation device for preventing cross-contamination according to this utility model;

[0021] Figure 2 yes Figure 1 Enlarged diagram of A in the middle;

[0022] Figure 3 This is a partial cross-sectional structural diagram of an embodiment of a biosafety cabinet partition operation device for preventing cross-contamination according to this utility model;

[0023] Figure 4 yes Figure 3 Enlarged diagram of B in the diagram;

[0024] Figure 5 This is a partial cross-sectional structural diagram of an embodiment of a biosafety cabinet partition operation device for preventing cross-contamination according to this utility model.

[0025] In the diagram, 1. Cabinet; 2. Fan; 3. Workbench; 4. Cabinet door; 5. Exhaust grille; 6. First partition; 7. Fixing component; 7a. First elastic connecting strip; 7b. First connecting groove; 8. Second partition; 9. Sliding block; 10. Sliding groove; 11. Inclined part; 12. First sealing strip; 13. Second connecting groove; 14. Second sealing strip; 15. Third connecting groove; 16. Second elastic connecting strip; 17. Fourth connecting groove. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] This invention provides a partitioned operation device for a biosafety cabinet to prevent cross-contamination, such as... Figures 1 to 5 As shown, the device includes a cabinet 1, a fan 2 mounted on the top of the cabinet 1, and an operating table 3 located inside the cabinet 1. A liftable cabinet door 4 is provided on one side of the cabinet 1. An exhaust grille 5 is inclinedly mounted on the end of the operating table 3 near the cabinet door 4. Several first partitions 6 are movably mounted on the operating table 3 in the vertical direction. A fastener 7 for fixing the first partitions 6 is provided on the side of the cabinet 1 away from the cabinet door 4.

[0028] Furthermore, the fastener 7 includes a first elastic connecting strip 7a that is adsorbed and connected to the inner wall of the cabinet 1 and a first connecting groove 7b opened on the first elastic connecting strip 7a. The first elastic connecting strip 7a is arranged vertically on the inner wall of the cabinet 1, and the end of the first partition 6 away from the cabinet door 4 is engaged with the first connecting groove 7b.

[0029] Furthermore, a second partition 8 is movably disposed on one side of the first partition 6. A plurality of elongated sliding blocks 9 are disposed horizontally on the side of the second partition 8 near the first partition 6. A plurality of sliding grooves 10 are formed on the first partition 6 in the horizontal direction, which can cooperate with the sliding blocks 9 one by one.

[0030] Furthermore, the longitudinal cross-sectional area of ​​the end of the sliding block 9 closest to the second partition 8 is smaller than the longitudinal cross-sectional area of ​​the end of the sliding block 9 furthest from the second partition 8.

[0031] Furthermore, the bottom of the second partition 8 near the cabinet door 4 is provided with an inclined portion 11 that can be movably attached to the exhaust mesh plate 5.

[0032] Furthermore, the bottom ends of the first partition 6 and the second partition 8 are each provided with a detachable first sealing strip 12 that can fit into the operating table 3, and the bottom ends of the first partition 6 and the second partition 8 are each provided with a second connecting groove 13 that can cooperate with the first sealing strip 12.

[0033] Furthermore, the top of both the first partition 6 and the second partition 8 is provided with a detachable second sealing strip 14 that can fit against the inner wall of the cabinet 1, and the top of both the first partition 6 and the second partition 8 is provided with a third connecting groove 15 that can cooperate with the second sealing strip 14.

[0034] Furthermore, a long strip of second elastic connecting strip 16 is provided horizontally on the inner wall of the cabinet body 1 on the side away from the cabinet door 4. The second elastic connecting strip 16 is adsorbed and connected to the inner wall of the cabinet body 1. The second elastic connecting strip 16 is provided with a plurality of fourth connecting grooves 17 that can cooperate with the first partition 6 one by one. One end of the first partition 6 is engaged with the adjacent fourth connecting groove 17.

[0035] Furthermore, the number of the second elastic connecting strips 16 is 2, with the two second elastic connecting strips 16 located at both ends of the first elastic connecting strip 7a.

[0036] Furthermore, both the first partition 6 and the second partition 8 are made of transparent PPSU material.

[0037] When different microbial samples need to be tested, firstly, two second elastic connecting strips 16 are respectively pasted horizontally to the top and bottom of the inner wall of the cabinet 1. Then, multiple first sealing strips 12 are respectively engaged with the second connecting grooves 13 at the bottom of the first partition 6 and the second partition 8. Multiple second sealing strips 14 are respectively engaged with the third connecting grooves 15 at the top of the first partition 6 and the second partition 8. Then, several first elastic connecting strips 7a are sequentially pasted vertically to the inner wall of the cabinet 1 (the two ends of the first elastic connecting strips 7a are respectively attached to two second elastic connecting strips 16). Then, one end of several first partitions 6 is sequentially engaged with the first connecting groove 7b and the adjacent fourth connecting groove 17, thereby fixing the first partition 6. Then, several sliding blocks 9 on the second partitions 8 are sequentially engaged horizontally with the sliding grooves 10 of the first partition 6, realizing the sliding connection between the second partition 8 and the first partition 6 (at this time, the top of the first partition 6 and the second partition 8 are engaged). The first partition 6 and the bottom of the second partition 8 are attached to the inner wall of the cabinet 1 via the second sealing strip 14, and the bottom of the first partition 6 and the second partition 8 are attached to the inner wall of the operating table 3 via the first sealing strip 12. Then, multiple samples are placed in the partition space formed by the first partition 6. Finally, when the sample needs to be tested, the second partition 8 located on both sides of the sample is pulled outward, so that the second partition 8 and the first partition 6 are closed to block the side of the sample, preventing aerosols that may be generated during the sample operation from entering the operating space of other microbial samples. Therefore, by setting the first partition 6 and the fixing part 7, the first partition 6 divides the inside of the cabinet 1 into several spaces. At the same time, the fan 2 maintains a slight negative pressure state by evacuating the inside of the cabinet 1 through the air extraction mesh plate 5. Therefore, by combining the physical isolation of the first partition 6 with the slight negative pressure state inside the cabinet 1, when multiple microbial samples need to be tested, each sample can be placed separately, which can greatly reduce the risk of cross-contamination of aerosols during the operation.

[0038] By setting the first elastic connecting strip 7a and the first connecting groove 7b, when the first partition 6 needs to be set, firstly, several first elastic strips are pasted vertically on the inner wall of the cabinet 1 on the side away from the cabinet door 4. Then, one end of each first partition 6 is sequentially engaged in the first connecting groove 7b of each first elastic connecting strip 7a, thereby achieving detachable fixing of the first partition 6. The operation is simple and convenient.

[0039] By setting up a second partition 8, a sliding block 9, and a sliding groove 10, the width of the first partition 6 only needs to be set to about half the width of the cabinet 1 due to the first partition 6 and the sliding second partition 8. When multiple microbial samples need to be tested, multiple first partitions 6 can be fixed in sequence inside the cabinet 1 by the first elastic connecting strip 7a. Then, the sliding block 9 on the second partition 8 is engaged horizontally with the sliding groove 10 of the first partition 6. Each microbial sample is then placed in the small compartment formed by the first partition 6. When the sample needs to be tested, the second partitions 8 located on both sides of the sample are pulled outward, so that the second partition 8 and the first partition 6 are closed to block the sides of the sample, preventing aerosols that may be generated during the sample testing process from entering the operating space of other microbial samples. Therefore, setting up the second partition 8, etc., can work with the first partition 6 to physically isolate the sides of the microbial sample. At the same time, pushing the second partition 8 can reduce the space required for the sample when it is not being operated.

[0040] By setting the sliding block 9 as a trapezoid with a wider outer edge and a narrower inner edge, the stability of the connection between the second partition 8 and the first partition 6 can be increased, preventing the second partition 8 from separating from the first partition 6 during the sliding process and improving the safety of operation.

[0041] By setting the inclined part 11, one end of the second partition 8 can be attached to the air extraction mesh plate 5 through the inclined part 11, thereby further increasing the isolation effect between the operating space formed by the first partition 6 and the second partition 8 and other samples, and further reducing the possibility of cross-contamination of aerosols that may be generated during the operation.

[0042] By setting the first sealing strip 12 and the second sealing strip 14, the tightness of the connection between the top and bottom ends of the first partition 6 and the second partition 8 and the inner wall of the cabinet 1 and the operating table 3 is improved, thereby improving the sealing of the operating space during operation. (It should be noted that the first sealing strip 12 and the second sealing strip 14 are both made of wear-resistant elastic materials with a certain hardness, such as silicone rubber sealing strips, which can ensure the sealing effect and reduce the frictional resistance during the pushing and pulling of the second partition 8.)

[0043] By setting two second elastic connecting strips 16, an I-shape is formed between the second elastic connecting strip 16 and the first elastic connecting strip 7a, thereby greatly improving the connection effect between the first elastic connecting strip 7a and the second elastic connecting strip 16 and the inner wall of the cabinet 1, and thus improving the fixing effect of the first partition 6. (It should be noted that both the first elastic sealing strip and the second elastic sealing strip are made of safe materials that can stably adhere to the inner wall and have no residual adsorption, such as silicone-based adsorption materials, which can ensure a stable connection with the inner wall of the cabinet 1, thereby ensuring the fixing effect of the first partition 6.)

[0044] By making the first partition 6 and the second partition 8 transparent PPSU material, each operating space formed by the first partition 6 and the second partition 8 is transparent and visible, thereby avoiding affecting the operator's field of vision. At the same time, the use of PPSU material meets biosafety requirements, is lightweight, and is resistant to chemical corrosion, thus meeting the need for physical isolation through the first partition 6 and the second partition 8.

[0045] It should be noted that the fan 2, air filtration system, sliding mechanism and pneumatic buffer mechanism between the cabinet door 4 and the cabinet body 1 of the biosafety cabinet are all existing technologies. Therefore, not describing them in detail will not affect the understanding of the technical scope actually protected by this application by those skilled in the art.

[0046] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0047] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A partitioned operation device for a biosafety cabinet to prevent cross-contamination, characterized in that: The device includes a cabinet (1), a fan (2) installed on the top of the cabinet (1), and an operating table (3) installed inside the cabinet (1). A liftable cabinet door (4) is provided on one side of the cabinet (1). An exhaust screen (5) is inclinedly installed on the end of the operating table (3) near the cabinet door (4). Several first partitions (6) are movably installed on the operating table (3) in the vertical direction. A fastener (7) for fixing the first partitions (6) is provided on the side of the cabinet (1) away from the cabinet door (4).

2. The cross-contamination prevention biosafety cabinet partition operation device according to claim 1, characterized in that: The fastener (7) includes a first elastic connecting strip (7a) that is adsorbed and connected to the inner wall of the cabinet (1) and a first connecting groove (7b) opened on the first elastic connecting strip (7a). The first elastic connecting strip (7a) is arranged vertically on the inner wall of the cabinet (1), and the end of the first partition (6) away from the cabinet door (4) is engaged with the first connecting groove (7b).

3. The cross-contamination prevention biosafety cabinet partition operation device according to claim 2, characterized in that: A second partition (8) is movably provided on one side of the first partition (6). Several long strip-shaped sliding blocks (9) are provided on the side of the second partition (8) close to the first partition (6) in the horizontal direction. Several sliding grooves (10) that can cooperate with the sliding blocks (9) are opened on the first partition (6) in the horizontal direction.

4. A biosafety cabinet partitioned operation device for preventing cross-contamination according to claim 3, characterized in that: The longitudinal cross-sectional area of ​​the end of the sliding block (9) closer to the second partition (8) is smaller than the longitudinal cross-sectional area of ​​the end of the sliding block (9) farther away from the second partition (8).

5. A cross-contamination prevention biosafety cabinet partition operation device according to claim 3, characterized in that: The bottom of the second partition (8) near the cabinet door (4) is provided with an inclined part (11) that can be movably attached to the exhaust mesh plate (5).

6. A cross-contamination prevention biosafety cabinet partition operation device according to claim 3, characterized in that: The bottom ends of the first partition (6) and the second partition (8) are provided with a detachable first sealing strip (12) that can fit into the operating table (3), and the bottom ends of the first partition (6) and the second partition (8) are provided with a second connecting groove (13) that can cooperate with the first sealing strip (12).

7. A cross-contamination prevention biosafety cabinet partition operation device according to claim 6, characterized in that: The top of the first partition (6) and the second partition (8) are provided with a detachable second sealing strip (14) that can fit into the inner wall of the cabinet (1). The top of the first partition (6) and the second partition (8) are provided with a third connecting groove (15) that can cooperate with the second sealing strip (14).

8. A biosafety cabinet partitioned operation device for preventing cross-contamination according to claim 2, characterized in that: On the inner wall of the cabinet (1) away from the cabinet door (4), there is a long strip of second elastic connecting strip (16) arranged in the horizontal direction. The second elastic connecting strip (16) is adsorbed and connected to the inner wall of the cabinet (1). The second elastic connecting strip (16) has several fourth connecting grooves (17) that can cooperate with the first partition (6) one by one. One end of the first partition (6) is engaged with the adjacent fourth connecting groove (17).

9. A biosafety cabinet partitioned operation device for preventing cross-contamination according to claim 8, characterized in that: The number of the second elastic connecting strips (16) is 2, and the two second elastic connecting strips (16) are located at both ends of the first elastic connecting strip (7a).

10. A cross-contamination prevention biosafety cabinet partition operation device according to claim 3, characterized in that: Both the first partition (6) and the second partition (8) are made of transparent PPSU material.

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