Laboratory mouse euthanasia experiment cabin

Abstract

The utility model discloses a laboratory mouse euthanasia experiment cabin, which belongs to the technical field of animal laboratories and comprises a placement table, an experiment cabin and a ventilation component. Wherein at least two layers of placing spaces are formed on the placing table from top to bottom; at least one experiment cabin is arranged in each layer of placing space, an accommodating cavity is formed in each experiment cabin, and an experiment mouse can be placed in each accommodating cavity; the experiment module is divided into a rat experiment module and a mouse experiment module, and the volume of a containing cavity of the rat experiment module is larger than that of a containing cavity of the mouse experiment module; the rat experiment module and the mouse experiment module are used for placing experiment rats with different sizes; the ventilation assembly communicates with the containing cavity and can introduce gas into the containing cavity. Through cooperation of the plurality of experiment cabins, the rat experiment cabin and the mouse experiment cabin, laboratory mice of different sizes and numbers can be classified and separated, so that the requirement of experiment accuracy is met.

Description

Technical Field

[0001] The utility model relates to the technical field of animal laboratories, in particular to an experimental chamber for euthanasia of experimental mice. Background Art

[0002] In the fields of medicine and biology, because the gene sequences of laboratory mice are highly similar to those of humans, experimenters often conduct experiments on laboratory mice to provide experimental basis for the research and development of new drugs and the exploration of the mysteries of life sciences. In order to obtain various research data, in most cases, it is necessary to euthanize the laboratory mice and then take samples for testing. During the euthanasia process, it is necessary to observe laboratory mice of different types and sizes, to ensure that the laboratory mice have been euthanized, and to obtain relevant data or perform autopsies as soon as possible. Therefore, the timing of euthanasia needs to be relatively accurate, and at the same time comply with the welfare ethics of experimental animals and protect the occupational health and safety of experimenters.

[0003] The existing euthanasia test chamber is mainly designed for batch processing of experimental mice, and it is not convenient to use it directly for a small number of experimental mice of various types. On the one hand, the commonly used euthanasia equipment has a special disposal room, which is not in the same room as the detection experiment, which is not convenient for experimental personnel to observe and operate. On the other hand, the existing test chamber can only be widely used for large-scale elimination of experimental mice, and cannot achieve small-scale rapid and accurate control of euthanasia of experimental mice of different sizes and numbers, and cannot meet the needs of experimental stages. Utility Model Content

[0004] The utility model aims to provide a laboratory mouse euthanasia test chamber to solve the technical problem that the laboratory chamber in the prior art cannot accurately classify and euthanize the laboratory mice.

[0005] As conceived above, the technical solution adopted by the utility model is:

[0006] A laboratory mouse euthanasia test chamber, comprising:

[0007] A placing table, wherein at least two layers of placing spaces are formed on the placing table from top to bottom;

[0008] An experimental cabin, wherein at least one of the experimental cabins is arranged in each layer of the placement space, and a receiving cavity is formed in the experimental cabin, and an experimental mouse can be placed in the receiving cavity; the experimental cabin is divided into a rat experimental cabin and a mouse experimental cabin, and the volume of the receiving cavity of the rat experimental cabin is larger than the volume of the receiving cavity of the mouse experimental cabin; the rat experimental cabin and the mouse experimental cabin are used to place experimental mice of different sizes;

[0009] A ventilation component is connected to the accommodating chamber, and the ventilation component can introduce gas into the accommodating chamber.

[0010] Wherein, the experimental chamber includes a plurality of isolation plates, and the plurality of isolation plates are jointly arranged to form the accommodating cavity, and at least part of the isolation plates are transparent plates.

[0011] Wherein, the isolation plate between two adjacent experimental cabins is a sunshade.

[0012] Among them, a first placement opening is opened on the side wall of the mouse experimental cabin, the first placement opening is connected to the accommodating cavity, and the height of the first placement opening from the bottom wall of the experimental cabin is not less than a first distance value.

[0013] Among them, a second placement port is opened on the side wall of the rat experimental chamber, the second placement port is connected to the accommodating cavity, and the opening cross-section of the second placement port gradually decreases from top to bottom.

[0014] The second storage opening includes an upper end and a lower end, the upper end and the lower end are both arc-shaped, and the inner diameter of the upper end is greater than the inner diameter of the lower end.

[0015] Among them, two layers of placement space are formed on the placement table, and a rat experiment cabin is arranged in the placement space located on the lower layer, and two mouse experiment cabins are adjacently arranged in the placement space located on the upper layer. The two mouse experiment cabins are separated by a blocking plate, and the blocking plate is movably connected to the mouse experiment cabin. Moving the blocking plate can change the size of the accommodating cavity.

[0016] Among them, a ventilation component is separately provided for each of the experimental chambers, and the ventilation component includes a ventilation part and a control part. The ventilation part is connected to the accommodating cavity, and the control part can control the ventilation part to introduce gas into the accommodating cavity.

[0017] Among them, it also includes an exhaust component, which includes an exhaust gas treatment pipe and an exhaust fan. Each of the experimental cabins is provided with an exhaust port, and each of the exhaust ports is provided with the exhaust fan. Multiple experimental cabins share one exhaust gas treatment pipe, and each of the exhaust ports is connected to the exhaust gas treatment pipe.

[0018] Wherein, a lifting part is arranged at the bottom of the placing table, and the lifting part can drive the placing table to rise and fall in a vertical direction.

[0019] Beneficial effects of the utility model:

[0020] The experimental chamber for euthanasia of experimental mice proposed in the utility model has multiple layers of placement space formed on the placement table, and different experimental chambers can be placed in each layer of placement space according to different experimental requirements, and different numbers of experimental mice can be placed in each experimental chamber according to data collection requirements, so as to help to carry out detection experiments on experimental mice of different numbers and types in different time periods and stages according to the plan. In addition, the experimental chamber is divided into a rat experimental chamber and a mouse experimental chamber, and the experimental mice can be euthanized in different experimental chambers according to their species, and the experimental mice of the same strain can also be placed in the same experimental chamber, which can further improve the accuracy of the control variables, so as to improve the accuracy of the experimental data, and meet the requirements of experimental animal welfare ethics. In addition, the accommodating chamber is connected by the ventilation component, and carbon dioxide gas can be discharged into the experimental chamber. Through the coordination between multiple experimental chambers and the rat experimental chamber and the mouse experimental chamber, it is possible to achieve simultaneous euthanasia of experimental mice of different sizes and numbers to meet the needs of experimental accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the experimental mouse euthanasia experimental chamber provided by the embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the experimental mouse euthanasia experimental chamber and the chamber door provided in the embodiment of the utility model;

[0023] Figure 3 It is a front view of the experimental chamber for euthanasia of experimental mice provided by an embodiment of the utility model;

[0024] Figure 4 It is a side view of the experimental mouse euthanasia experimental chamber provided by an embodiment of the utility model.

[0025] In the figure:

[0026] 10. Placement table;

[0027] 201, rat test chamber; 202, mouse test chamber; 21, isolation board; 22, first storage port; 23, second storage port; 24, cabin door; 25, observation window; 26, locking piece;

[0028] 30. Control department;

[0029] 40. Waste gas treatment pipe. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is 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 that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0034] The embodiment of the utility model provides an experimental mouse euthanasia experimental chamber, which is used for isolating experimental mice of different numbers and sizes.

[0035] See also Figure 1 and Figure 2 The experimental chamber for euthanasia of experimental mice provided by the embodiment of the utility model includes a placement table 10, an experimental chamber and a ventilation component. Among them, at least two layers of placement space are formed on the placement table 10 from top to bottom; at least one experimental chamber is arranged in each layer of placement space, and a receiving cavity is formed in the experimental chamber, and the experimental mice can be placed in the receiving cavity; the experimental chamber is divided into a rat experimental chamber 201 and a mouse experimental chamber 202, and the volume of the receiving cavity of the rat experimental chamber 201 is larger than the volume of the receiving cavity of the mouse experimental chamber 202; the rat experimental chamber 201 and the mouse experimental chamber 202 are used to place experimental mice of different sizes; the ventilation component is connected to the receiving cavity, and the ventilation component can pass gas into the receiving cavity. Through the coordinated cooperation between multiple experimental chambers and the rat experimental chamber 201 and the mouse experimental chamber 202, it is possible to achieve simultaneous euthanasia of experimental mice of different sizes and numbers to meet the needs of experimental accuracy.

[0036] Since multiple layers of placement space are formed on the placement table 10, different numbers of experimental chambers can be placed in each layer of placement space according to different experimental requirements, and different numbers of experimental mice can be placed in each experimental chamber according to the experimental requirements, which helps to carry out detection experiments on experimental mice of different numbers and types in different time periods and stages according to the plan. In addition, the experimental chamber is divided into a rat experimental chamber 201 and a mouse experimental chamber 202, which can be euthanized in different experimental chambers according to different varieties of experimental mice, and experimental mice of the same strain can also be placed in the same experimental chamber, which can further improve the accuracy of the control variables to improve the accuracy of the experimental data. In addition, the accommodating chamber is connected through the ventilation component, and the required carbon dioxide gas can be discharged into the experimental chamber. Through the setting of multiple experimental chambers, and the coordinated cooperation between the rat experimental chamber 201 and the mouse experimental chamber 202, it is possible to achieve simultaneous euthanasia of experimental mice of different sizes and numbers to meet the needs of experimental accuracy.

[0037] During the euthanasia process, the experimenter needs to observe and record the behavior and activity status of the experimental mice in the experimental cabin to analyze and determine whether the animal is dead. Therefore, in order to facilitate the experimenter to observe, the experimental cabin includes a plurality of isolation panels 21, and the plurality of isolation panels 21 are jointly arranged to form a containing cavity, and at least part of the isolation panels 21 are transparent panels. The experimental cabin is formed by enclosing a plurality of isolation panels 21, which is convenient for processing, disassembly and transportation of the experimental cabin. In the present embodiment, each experimental cabin is surrounded by isolation panels 21 to form a rectangular shape, which can not only improve the stability during placement, but also facilitate the stacking of multiple experimental cabins, and has a high space utilization rate. In other embodiments, prismatic, cylindrical and other experimental cabins can also be selected according to actual requirements, and there is no restriction here. The isolation panel 21 is selected as a transparent panel to facilitate the experimenter to observe the state of the experimental mice inside the experimental cabin. In some embodiments, transparent panels can be selected for the entire experimental cabin, so that the situation in the experimental cabin can be observed from all directions.

[0038] Furthermore, in this embodiment, not only the technical level of improving the experimental operation is focused on, but more importantly, the improvement of animal welfare is focused on, which reflects the respect for the dignity of animal life and the consideration of scientific research ethics. Specifically, the isolation board 21 between the two adjacent experimental cabins is a sunshade, and a physically isolated cabin is constructed by the sunshade, which prevents the experimental mice in different experimental cabins from seeing each other during the euthanasia process, thereby alleviating the fear and anxiety that the animals may experience at the last moment, thereby reducing their psychological harm, which not only reflects the humanitarian spirit of treating experimental animals, but also meets the growing attention and requirements of modern society for animal welfare. In addition, the remaining isolation boards 21 are transparent boards, which are convenient for experimental personnel to conduct all-round observations outside the experimental cabin, and convenient for observing and recording experimental data at any time.

[0039] In addition, there are air holes on the experimental cabin, and there are detachable plugging parts on the air holes. When ventilation experiments are not needed, the plugging parts can be removed to ensure air circulation in the experimental cabin, which ensures the breathing of the experimental mice in the experimental cabin on the one hand; on the other hand, it ensures ventilation in the experimental cabin, keeps the internal environment of the cabin dry, and prevents the growth of microorganisms. When ventilation experiments are required, plugging parts can be installed to ensure the sealing state of the experimental cabin, prevent experimental gas leakage from causing harm to the experimenters, and cause inaccurate recorded data, affecting the experimental results.

[0040] During the experiment, in order to increase the sample size, improve the universality of the experiment and avoid contingency, due to the different physiological states of experimental rats and experimental mice, both experimental rats and experimental mice need to be euthanized separately.

[0041] In the process of placing the experimental mice into the experimental chamber, the methods of placing the experimental rats and experimental mice are different due to the different body sizes. Generally speaking, according to the experimental operation habits, the experimental mice are held by the experimental personnel and placed into the mouse experimental chamber 202, and the experimental rats are usually lifted by the tails of the experimental rats and placed into the rat experimental chamber 201. Therefore, in order to adapt to the placing process of different experimental mice, different placement ports are set on different experimental chambers.

[0042] See also Figure 1 and Figure 3 Specifically, regarding the mouse experimental cabin 202, a first placement port 22 is provided on the side wall of the mouse experimental cabin 202, the first placement port 22 is connected to the accommodating cavity, and the height of the first placement port 22 from the bottom wall of the experimental cabin is not less than the first distance value. It can be understood that the opening area of ​​the first placement port 22 should be slightly larger than the cross-sectional area of ​​a normal adult human fist, so that it is convenient for the experimenter to hold the experimental mouse and put it into the mouse experimental cabin 202. In order to prevent the experimental mice in the mouse experimental cabin 202 from escaping, the height of the first placement port 22 from the bottom wall of the experimental cabin is not less than the first distance value, so as to prevent the experimental mice from jumping out of the first placement port 22 and escaping. In this embodiment, the range of the first distance value is 10cm-20cm, which exceeds the jumping height of general experimental mice and can prevent the experimental mice from escaping. In other embodiments, it can be adjusted according to the size of the experimental cabin and the size and quality of the experimental mice, which are not limited here.

[0043] For ease of processing, the first placement opening 22 is set to be square, and the opening cross-section of the first placement opening 22 is in the range of 50 square centimeters to 70 square centimeters. In other embodiments, it can be set according to actual conditions and is not limited here. In order to prevent the edge of the first placement opening 22 from causing damage to the hands of the experimenter during the placement process, the four corners of the first placement opening 22 are rounded, thereby improving smoothness; in addition, a protective layer is set on the inner circle of the first placement opening 22 to provide a protective effect.

[0044] Regarding the rat experimental chamber 201, a second placement port 23 is provided on the side wall of the rat experimental chamber 201, and the second placement port 23 is connected to the accommodating cavity, and the opening cross section of the second placement port 23 gradually decreases from top to bottom. Since the experimental rats are placed into the rat experimental chamber 201 by the experimenters lifting the experimental rats by their tails, the cross section of the second placement port 23 gradually decreases from top to bottom, so that it is convenient to put the experimental rats into the experimental chamber from the upper part of the second placement port 23, and the lower placement port has a smaller opening, so that it can limit the experimental rats and prevent the experimental rats from escaping. In other embodiments, the second placement port 23 can be set to an inverted triangle or an inverted trapezoid.

[0045] Furthermore, in order to prevent the notch of the second placement opening 23 from causing harm to the experimenter and the experimental rat during the placement process, in this embodiment, the second placement opening 23 includes an upper end and a lower end, both of which are arc-shaped, and the inner diameter of the upper end is greater than the inner diameter of the lower end. The arc shape has better smoothness and is more in line with the shape of a human hand, making it easier to place the experimental rat into the rat experimental chamber 201.

[0046] See also Figure 2 In order to further prevent the experimental mice from escaping from the experimental cabin, the experimental cabin also includes a cabin door 24, which is arranged at the exit end of the experimental cabin, and is hinged to the side wall of the experimental cabin, and the cabin door 24 can open or close the experimental cabin. In order to prevent the cabin door 24 from blocking the line of sight and hindering the experimenter from observing the situation in the cabin, the cabin door 24 is provided with an observation window 25, and the observation window 25 is installed with transparent glass to facilitate the experimenter to observe. In addition, the cabin door 24 is provided with a locking member 26 for locking or opening the cabin door 24.

[0047] Regarding the number and placement of the experimental chambers, the number and arrangement of the rat experimental chambers 201 and the mouse experimental chambers 202 placed in each layer of the placement space can be selected according to the size of the placement table 10 and the placement space, and the number of layers of the placement space can also be selected according to requirements. In addition, all rat experimental chambers 201 or all mouse experimental chambers 202 can be set according to the experimental requirements, and there is no limitation here.

[0048] In this embodiment, two layers of placement space are formed on the placement table 10, a rat experiment cabin 201 is arranged in the placement space located in the lower layer, and two mouse experiment cabins 202 are arranged adjacently in the placement space located in the upper layer, and the two mouse experiment cabins 202 are separated by a blocking plate, and the blocking plate is movably connected to the mouse experiment cabin 202, and the size of the accommodating cavity can be changed by moving the blocking plate. Since the weight of the experimental rat is greater than the weight of the experimental mouse, the rat experiment cabin 201 is arranged at the bottom of the mouse experiment cabin 202, which is convenient for the experimenter to place the experimental rat, and the two mouse experiment cabins 202 are arranged adjacently to improve the space utilization rate. In this embodiment, the blocking plate is plugged into the mouse experiment cabin 202, and the blocking plate is slidably connected to the inner wall of the mouse experiment cabin 202. By moving the blocking plate along the length direction of the mouse experiment cabin 202, the size of the accommodating cavity of the two mouse experiment cabins 202 can be changed, so as to be suitable for different experimental requirements.

[0049] In addition, in this embodiment, the size of the two mouse test chambers 202 is equal to the size of one rat test chamber 201. In the middle of the inner wall of the rat test chamber 201, two slide grooves are arranged opposite to each other. After the blocking plate is plugged into the slide groove, one rat test chamber 201 can be transformed into two mouse test chambers 202, which is convenient for flexible adjustment and placement. According to the needs of the experiment, the number of rat test chambers 201 and mouse test chambers 202 can be adjusted by pulling and inserting the blocking plate, which saves costs and improves operating efficiency. It is worth noting that when the mouse test chamber 202 and the rat test chamber 201 are interchanged and adjusted, the isolation plate 21 corresponding to the required placement port is also required to be replaced, so as to adaptively adjust the placement ports required for experimental mice of different sizes.

[0050] See also Figure 1 and Figure 4 During the experiment, in order to meet the staged experiments, it is necessary to introduce experimental gases into different experimental chambers at different time periods. Therefore, a ventilation component is separately provided for each experimental chamber, and the ventilation component includes a ventilation part and a control part 30. The ventilation part is connected to the accommodating cavity, and the control part 30 can control the ventilation part to introduce gas into the accommodating cavity. Since a ventilation component is separately provided for each experimental chamber, gas can be introduced into different experimental chambers in stages according to the experimental requirements, thereby improving the flexibility of the experimental process.

[0051] In addition, an independent control system is provided in the control unit 30, and the control system controls various parameters by PLC. At the same time, in order to facilitate the experimenter to carry out effective control during observation, the control system also sets an adjustable flow meter for the ventilation component of each experimental cabin separately, and controls and closes the flow rate and fluid speed separately as needed, so that the experimental operation can be carried out effectively and quickly as needed. Through the control system, the safety and efficiency of the experimental operation are ensured, and the introduction of the experimental gas can be stopped or adjusted in time during the experiment, which is convenient for dealing with emergencies, protects the occupational health of the experimenter, and has high safety. At the same time, the accuracy and repeatability of the experiment are also improved. In addition, by accurately controlling the process of euthanasia, it is ensured that each step can be carried out under strict monitoring, which greatly reduces the pain of the experimental mice, prevents the painful death of the experimental mice due to too much or too little experimental gas, thereby protecting animal welfare and improving the reliability of the experimental results. At the same time, the implementation of this design helps to promote the ethical standards of animal experiments in the field of scientific research and promote the sustainable development of scientific research activities.

[0052] After the experiment is completed, the experimental chamber is filled with a large amount of experimental gas. By installing the exhaust gas treatment pipe 40, the experimental gas can be discharged to the designated location immediately to prevent the experimenter from accidentally inhaling the experimental gas when opening the experimental chamber and causing physical damage, thereby protecting the experimenter's occupational health and improving safety.

[0053] Specifically, the laboratory mouse euthanasia test chamber also includes an exhaust assembly, which includes an exhaust gas treatment pipe 40 and an exhaust fan. Each laboratory chamber is provided with an exhaust port, and each exhaust port is provided with an exhaust fan. Multiple laboratory chambers share one exhaust gas treatment pipe 40, and each exhaust port is connected to the exhaust gas treatment pipe 40. When the experiment is finished, the exhaust fan is started, and the exhaust fan rotates to form a negative pressure inside the laboratory chamber, thereby extracting the experimental gas in the laboratory chamber to the exhaust gas treatment pipe 40 and discharging it. Multiple exhaust ports share one exhaust gas treatment pipe 40, which not only saves costs but also improves space utilization.

[0054] When installing and disassembling the experimental cabin, in order to prevent the number of layers of the placement space from being too high, which makes it difficult for the experimenters to install or take it, a lifting part is provided at the bottom of the placement table 10, and the lifting part can drive the placement table 10 to rise and fall in the vertical direction, so as to facilitate the disassembly and assembly process of the multi-layer experimental cabin by controlling the lifting and lowering of the placement table 10.

[0055] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laboratory mouse euthanasia test chamber, characterized in that: include: A placement table (10), wherein at least two layers of placement space are formed on the placement table (10) from top to bottom; An experimental cabin, wherein at least one of the experimental cabins is arranged in each layer of the placement space, and a receiving cavity is formed in the experimental cabin, and an experimental mouse can be placed in the receiving cavity; the experimental cabin is divided into a rat experimental cabin (201) and a mouse experimental cabin (202), and the volume of the receiving cavity of the rat experimental cabin (201) is greater than the volume of the receiving cavity of the mouse experimental cabin (202); the rat experimental cabin (201) and the mouse experimental cabin (202) are used to place experimental mice of different sizes; A ventilation component is connected to the accommodating chamber, and the ventilation component can introduce gas into the accommodating chamber.

2. The experimental mouse euthanasia test chamber according to claim 1, characterized in that: The experimental chamber comprises a plurality of isolation plates (21), wherein the plurality of isolation plates (21) are collectively arranged to form the accommodating cavity, and at least some of the isolation plates (21) are transparent plates.

3. The experimental mouse euthanasia test chamber according to claim 2, characterized in that: The isolation plate (21) between two adjacent experimental chambers is a light shielding plate.

4. The experimental mouse euthanasia test chamber according to claim 1, characterized in that: A first placement opening (22) is provided on the side wall of the mouse experimental chamber (202), the first placement opening (22) is connected to the accommodating cavity, and the height of the first placement opening (22) from the bottom wall of the experimental chamber is not less than a first distance value.

5. The experimental mouse euthanasia test chamber according to claim 1, characterized in that: A second placement opening (23) is provided on the side wall of the rat experimental chamber (201), the second placement opening (23) is connected to the accommodating cavity, and the opening cross-section of the second placement opening (23) gradually decreases from top to bottom.

6. The experimental mouse euthanasia test chamber according to claim 5, characterized in that: The second storage opening (23) comprises an upper end and a lower end, the upper end and the lower end are both arc-shaped, and the inner diameter of the upper end is greater than the inner diameter of the lower end.

7. The experimental mouse euthanasia test chamber according to claim 1, characterized in that: Two layers of placement space are formed on the placement table (10), one rat experiment cabin (201) is arranged in the placement space located at the lower layer, and two mouse experiment cabins (202) are adjacently arranged in the placement space located at the upper layer, the two mouse experiment cabins (202) are separated by a blocking plate, the blocking plate is movably connected to the mouse experiment cabin (202), and the size of the accommodating cavity can be changed by moving the blocking plate.

8. The laboratory mouse euthanasia test chamber according to any one of claims 1 to 7, characterized in that: A ventilation assembly is separately provided for each of the experimental chambers, and the ventilation assembly comprises a ventilation part and a control part (30), the ventilation part is connected to the accommodating chamber, and the control part (30) can control the ventilation part to introduce gas into the accommodating chamber.

9. The laboratory mouse euthanasia test chamber according to any one of claims 1 to 7, characterized in that: It also includes an exhaust component, which includes an exhaust gas treatment pipe (40) and an exhaust fan. Each of the experimental chambers is provided with an exhaust port, and each of the exhaust ports is provided with the exhaust fan. Multiple experimental chambers share one exhaust gas treatment pipe (40), and each of the exhaust ports is connected to the exhaust gas treatment pipe (40).

10. The experimental mouse euthanasia test chamber according to claim 1, characterized in that: A lifting part is provided at the bottom of the placement platform (10), and the lifting part can drive the placement platform (10) to rise and fall in a vertical direction.

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