Mouse fixing device

Abstract

The invention belongs to the technical field of experimental equipment, and relates to a mouse fixing device which comprises a fixing platform and further comprises four limb fixing assemblies which are arranged at the four corners of the bottom of the fixing platform respectively, and each limb fixing assembly comprises a supporting rod, two supporting claws, two movable claws and a drawing piece. The second end of the supporting rod extends towards the periphery of the bottom of the fixed platform, the two supporting claws are oppositely arranged, the upper ends of the supporting claws are fixedly connected with the second end of the supporting rod, a gap is formed between the two supporting claws, the lower ends of the supporting claws are open, and the supporting claws have bending elasticity; the upper ends of the two movable claws are hinged through the hinge piece, the lower end of each movable claw is connected with the lower end of the corresponding supporting claw, one end of the drawing piece is connected with the hinge piece, the drawing piece is pulled upwards, the two supporting claws bend inwards and deform so that the two movable claws can be buckled oppositely, and the four limbs of the laboratory mouse can be fixed.

Description

Technical Field

[0001] The present invention belongs to the technical field of experimental equipment, and particularly relates to a rat fixator. Background Art

[0002] In medical research, mice are often used as experimental animals. Mice have a fast reproduction rate and a short life cycle, and can reproduce a large number of offspring in a relatively short time, which is very beneficial for large-scale experimental research. The gene sequences of mice are highly similar to those of humans, especially in terms of physiology and genetics, making them an ideal model for studying the mechanisms of human diseases. They can be used to simulate many human diseases, such as cancer, cardiovascular diseases, diabetes, neurodegenerative diseases, etc. By studying the causes, development, and treatment methods of these diseases in mice, important clues can be provided for the treatment of human diseases.

[0003] In biological experiments, such as gene editing experiments or cell transplantation experiments, it is necessary to precisely fix the experimental mice to ensure the accuracy of experimental operations and the reliability of experimental results; in medical experiments, such as drug R & D experiments or disease model establishment experiments, it is necessary to fix the experimental mice for a long time to observe the efficacy of drugs or the development process of diseases; in addition, there are some special experimental requirements, such as when conducting behavioral research on experimental mice, it is necessary to slightly fix the experimental mice to observe their behavioral performances.

[0004] During experiments, researchers usually grasp the experimental mice by hand and then place them on a perforated plate, and fix the four limbs of the experimental mice through ropes, tapes, or rubber bands on the plate to restrict their activities. However, when grasping, due to the resistance and struggle of the experimental mice, it is sometimes difficult to fix the experimental mice or it is easy to be injured by the experimental mice. Summary of the Invention

[0005] In view of this, the present invention provides a rat fixator, which is convenient for fixing experimental mice.

[0006] The technical solution of the present invention is as follows: A rat fixator includes a fixed platform and further includes four groups of limb fixing components, which are respectively arranged at the four corner positions at the bottom of the fixed platform. Each group of the limb fixing components includes: A support rod, whose first end is connected to the fixed platform and the second end extends towards the outer periphery of the bottom of the fixed platform; Two support claws, which are arranged oppositely. The upper ends of the support claws are fixedly connected to the second end of the support rod. There is a gap between the two support claws and the lower ends are open. The support claws have bending elasticity; Two movable claws, which are oppositely arranged and located between the two support claws. The upper ends of the two movable claws are hinged by a hinge member, and the lower end of each movable claw is connected to the lower end of the corresponding support claw. The movable claws are arc-shaped, and the concave surfaces of the two movable claws face each other; A pulling member, one end of which is connected to the hinge member; Pull the pulling member upward, drive the movable claws to move upward through the hinge member, and the two support claws bend inwardly and deform so that the two movable claws are relatively buckled.

[0007] Preferably, the support claw includes a rigid section and a flexible section that are integrally connected. The rigid section is fixed to the support rod, the flexible section is fixed to the movable claw, and the flexible section has bending elasticity.

[0008] Preferably, a limiting hole is provided at the second end of the support rod. The limiting hole is located between the two support claws, and the pulling member passes through the limiting hole.

[0009] Preferably, an anti-slip layer is provided on the surface of the movable claw.

[0010] Preferably, a telescopic assembly is provided between the support rod and the fixed platform. The moving member of the telescopic assembly is connected to the support rod and is used to adjust the length of the support rod extending out of the fixed platform.

[0011] Preferably, it further includes an adjusting column, a sliding ring and a locking structure. The adjusting column is provided at the top of the fixed platform. The sliding ring is sleeved on the adjusting column and slides up and down. One end of each of the four pulling members is fixed to the sliding ring. The locking structure is provided on the adjusting column and is used to position the sliding ring.

[0012] Preferably, a receiving groove is provided on the adjusting column. The locking structure includes a limiting plate and an elastic member. The receiving groove is used to receive the limiting plate. The lower end of the limiting plate is rotatably connected to the side wall of the receiving groove. One end of the elastic member is connected to the inner wall of the receiving groove, and the other end is connected to one side of the top of the limiting plate. The elastic member is used to push the limiting plate out of the receiving groove.

[0013] Preferably, it further includes a propulsion structure. The propulsion structure includes a first connecting rod, a second connecting rod, a first collar and a push rod. The first connecting rod and the second connecting rod are arranged in a scissor shape and are hinged to each other. One end of the first connecting rod is provided with a first hand-held part, and the other end is connected to the first collar. The first collar is sleeved on the adjusting column, and the first collar is located between the sliding ring and the fixed platform. One end of the second connecting rod is provided with a second hand-held part, and the other end is hinged to one end of the push rod. The other end of the push rod is hinged to the sliding ring.

[0014] Preferably, a support panel is fixed to one end of the adjustment column away from the fixed platform. The support panel is inclined, and the inclination angle is 30°-60°.

[0015] Preferably, it further includes a head fixing component, which includes two baffles. The baffles are arranged at the front part of the fixed platform. The baffles are connected to the fixed platform, and the two baffles are arranged at intervals for clamping the head of the experimental mouse.

[0016] Compared with the prior art, a rat fixing device provided by the present invention has the following beneficial effects: By respectively arranging limb fixing components at the four corners of the bottom of the fixed platform, in the limb fixing components, support claws are arranged at the outer ends of the support rods. The support claws are used to support the movable claws to ensure that the movable claws are in an open state before clamping. And when clamping, by simultaneously pulling up the four pulling parts upwards, under the bending elastic action of the support claws, the movable claws can be closed to clamp the four legs of the experimental mouse, so as to realize the fixation of the four limbs of the experimental mouse, limit the movement of the experimental mouse, facilitate the fixation of the experimental mouse, effectively disperse the force generated when the experimental mouse struggles, ensure that the four limbs of the experimental mouse will not easily break free during the experiment, and in the fixation process, the hands of people do not need to directly contact the limbs of the experimental mouse to avoid being injured by the experimental mouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the limb fixing component of the present invention.

[0019] Figure 3 It is a schematic diagram of the buckle structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the propulsion structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the telescopic component of the present invention.

[0022] Figure 6 It is a bottom view of the overall structure of the present invention.

[0023] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Fixed platform; 2. Support rod; 201. Limit hole; 202. Gear; 203. Rack; 204. Cover plate; 3. Support claw; 301. Rigid section; 302. Flexible section; 4. Movable claw; 5. Pull-out member; 6. Slip ring; 7. Locking structure; 701. Limit plate; 702. Elastic member; 8. Adjusting column; 9. Propelling structure; 901. First connecting rod; 902. Second connecting rod; 903. First collar; 904. Push rod; 905. Second collar; 10. Baffle; 11. Support panel. Detailed implementation mode

[0024] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0026] In addition, it should be noted that the connections involved in the present invention can be achieved by conventional connection methods and do not involve any innovation.

[0027] The subject matter of the present invention relates to a rat trap. In medical research, rats are often used as experimental animals. Rats have a fast reproduction rate and a short life cycle, and can reproduce a large number of offspring in a relatively short time, which is very beneficial for large-scale experimental research. The gene sequences of rats are highly similar to those of humans, especially in terms of physiology and genetics, which makes them an ideal model for studying the mechanisms of human diseases and can be used to simulate many human diseases such as cancer, cardiovascular diseases, diabetes, neurodegenerative diseases, etc. By studying the causes, development and treatment methods of these diseases in rats, important clues can be provided for the treatment of human diseases.

[0028] In biological experiments, such as gene editing experiments or cell transplantation experiments, it is necessary to precisely fix experimental mice to ensure the accuracy of experimental operations and the reliability of experimental results. In medical experiments, such as drug R & D experiments or disease model establishment experiments, it is necessary to fix experimental mice for a long time to observe the efficacy of drugs or the development process of diseases. In addition, there are some special experimental requirements. For example, when conducting behavioral research on experimental mice, it is necessary to slightly fix the experimental mice to observe their behavioral performances.

[0029] During experiments, researchers usually grasp the experimental mice by hand and then place them on a perforated plate. The four limbs of the experimental mice are fixed through ropes, tapes or rubber bands on the plate to restrict their activities. However, when grasping, due to the resistance and struggle of the experimental mice, it is sometimes difficult to fix the experimental mice or it is easy to be injured by the experimental mice.

[0030] For the above reasons, the present invention provides a mouse fixator to facilitate solving the above-mentioned technical problems. The following combines Figures 1 to 6 to elaborate on the present invention in detail.

[0031] Embodiment 1 This embodiment provides a mouse fixator, as Figure 1 shown, which includes a fixing platform 1 and also includes four groups of limb fixing components, which are respectively arranged at the four corner positions of the bottom of the fixing platform 1. Each group of limb fixing components includes a support rod 2, two support claws 3, two movable claws 4, and a pulling member 5.

[0032] Among them, the first end of the support rod 2 is connected to the fixing platform 1, and the second end extends towards the outer periphery of the bottom of the fixing platform 1. The two support claws 3 are arranged oppositely. The upper end of the support claw 3 is fixedly connected to the second end of the support rod 2. There is a gap between the two support claws 3 and the lower end is open. The support claw 3 has bending elasticity. The two movable claws 4 are arranged oppositely and are located between the two support claws 3. The upper ends of the two movable claws 4 are hinged through a hinge member. The lower end of each movable claw 4 is connected to the lower end of the corresponding support claw 3. One end of the pulling member 5 is connected to the hinge member. By pulling the pulling member 5 upwards, the movable claw 4 is driven to move upwards through the hinge member, and the two support claws 3 bend inwards and deform so that the two movable claws 4 are relatively buckled. The pulling member 5 can be a pull rope, and the hinge member can be a movable shaft. The lower end of the pull rope is connected to the corresponding movable shaft.

[0033] The movable claw 4 is in a left - right semi - "C" shape. The distal end of the movable claw 4 is connected to the distal end (soft part) of the support claw 3, which can increase the firmness of the movable claw 4. One end of the pull rope is connected to the connection part of the left - right movable claws 4. Using the lever principle, by pulling the pull rope upwards, the movable claw 4 can be adjusted to ensure that the lower - connected movable claw 4 can control the four limbs of the experimental mouse, effectively dispersing the force generated when the experimental mouse struggles and ensuring that the four limbs of the experimental mouse will not easily break free during the experiment.

[0034] In order to improve the stability of the device during use, in this embodiment, the support claw 3 includes a rigid section 301 and a flexible section 302 that are integrally connected. The rigid section 301 is fixed to the support rod 2, and the flexible section 302 is fixed to the movable claw 4. The flexible section 302 has bending elasticity. In this embodiment, an anti-slip layer is provided on the surface of the movable claw 4. The anti-slip layer can be an anti-slip pad with a soft material.

[0035] The design of the anti-slip pad at the end of the movable claw 4 and the flexible section 302 of the support claw 3 can avoid hurting the experimental mouse while ensuring the fixing effect, meet the ethical requirements of experimental animals, and ensure the welfare of experimental animals.

[0036] Soft pads are provided at all positions in contact with the experimental mouse. This design not only increases the stability of the device during use, prevents the experimental mouse from being injured due to the shaking of the device, but also effectively protects the body of the experimental mouse. The material of the anti-slip layer is soft and has a certain elasticity. When the body of the experimental mouse contacts the support feet, the anti-slip pad can play a buffering role, reducing the pressure and friction force of the support feet on the body of the experimental mouse, thereby avoiding injuries such as abrasions and bruises to the body of the experimental mouse.

[0037] In order to further improve the clamping stability, a limiting hole 201 is provided at the second end of the support rod 2. The limiting hole 201 is located between the two support claws 3, and the pulling member 5 passes through the limiting hole 201. It can ensure that the stretching direction of the pulling member 5 is upward, avoiding the inclination of the movable claw 4.

[0038] In order to limit the movement range of the head of the experimental mouse, a head fixing assembly is further included, which includes two baffles 10. The baffles 10 are arranged at the front part of the fixing platform 1. The baffles 10 are connected to the fixing platform 1, and the two baffles 10 are spaced apart for clamping the head of the experimental mouse. Ensure that during the experiment, the head of the experimental mouse will not affect the accuracy of the experimental results due to struggling or shaking. As Figure 1 shown, the baffle 10 is shaped like a "Z" and extends towards the head direction.

[0039] Usage method of this embodiment For the mouse fixer provided in this embodiment, before the experiment, lift the tail of the experimental mouse and gently place it on the ground. When the head, body position, and three points are in a straight line, quickly align the base of the fixing platform 1 of the device with the back of the experimental mouse. At the same time, the four movable claws 4 press on the four limbs, and the two baffles 10 clamp the head to control its movement. Then, pull up the pulling member 5 simultaneously. The four movable claws 4 are relatively clamped under the inward supporting force of the support claws 3, and the movable claws 4 clamp and fix the four limbs of the experimental mouse, thereby realizing the fixation of the experimental mouse.

[0040] The main part of the bracket is in a structure similar to the Chinese character "tu". Two baffles 10 extending towards the head direction in a structure similar to the Chinese character "Z" are used to fix the head of the experimental mouse. The fixing platform 1 extends four feet towards the limbs from the inside, in a structure similar to the Chinese character "X". The present invention can flexibly adjust the fixing force of the movable claws 4 on the limbs of the experimental mouse according to experimental requirements, which not only ensures the stability of the experimental mouse during the experiment, but also avoids causing harm to the experimental mouse due to excessive fixation.

[0041] Embodiment 2 On the basis of Embodiment 1, in order to be able to lift the four pulling ropes upwards simultaneously, in this embodiment, an adjusting column 8, a sliding ring 6 and a locking structure 7 are further included. The adjusting column 8 is arranged on the top of the fixing platform 1. The sliding ring 6 is sleeved on the adjusting column 8 and slides up and down. One end of each of the four pulling ropes is fixed to the sliding ring 6. The locking structure 7 is arranged on the adjusting column 8 and is used to position the sliding ring 6.

[0042] Since the four pulling ropes are fixed to the sliding ring 6 at the same time, during operation, only by moving the sliding ring 6 can the four pulling ropes be lifted simultaneously.

[0043] After the pulling rope is lifted upwards to drive the movable claw 4 to buckle, in order to make the movable claw 4 continue to maintain the buckled and clamped state, it is necessary to limit the position of the sliding ring 6. A receiving groove is opened on the adjusting column 8. The locking structure 7 includes a limiting plate 701 and an elastic member 702. The receiving groove is used to receive the limiting plate 701. The lower end of the limiting plate 701 is rotatably connected to the side wall of the receiving groove. One end of the elastic member 702 is connected to the inner wall of the receiving groove, and the other end is connected to one side of the top of the limiting plate 701. The elastic member 702 is used to push the limiting plate 701 out of the receiving groove.

[0044] The elastic member 702 can be a spring. The depth of the receiving groove is sufficient to allow the entire limiting plate 701 to enter the inside of the receiving groove, and the lower end of the limiting plate 702 does not protrude from the receiving groove.

[0045] The usage method of this embodiment For the mouse fixer provided in this embodiment, during operation, the sliding ring 6 can be manually slid upwards. The sliding ring 6 drives the four pulling ropes to be lifted upwards simultaneously, thereby driving the movable claws 4 to relatively buckle to fix the limbs of the experimental mouse. During the process of the sliding ring 6 moving upwards, the limiting plate 701 is pushed into the receiving groove. After the sliding ring 6 moves to a position beyond the limiting plate 701, the limiting plate 701 rotates under the restoring force of the elastic member 702, and the upper end of the limiting plate 701 turns out of the receiving groove. The limiting plate 701 limits the position of the sliding ring 6 to prevent the sliding ring 6 from moving downwards.

[0046] Embodiment 3 Based on the above embodiments, in order to further enhance the convenience of operation, this embodiment further includes a propulsion structure 9. The propulsion structure 9 includes a first connecting rod 901, a second connecting rod 902, a first collar 903, a push rod 904, and a second collar 905. The first connecting rod 901 and the second connecting rod 902 are arranged in a scissor shape and are hinged to form a scissor-shaped handle. One end of the first connecting rod 901 is provided with a first hand-held part, and the other end is connected to the first collar 903. The first collar 903 is sleeved on the adjusting column 8, and the first collar 903 is located between the sliding ring 6 and the fixed platform 1. The second collar 905 is slidably sleeved on the adjusting column 8 and is located between the first collar 903 and the sliding ring 6. One end of the second connecting rod 902 is provided with a second hand-held part, and the other end is hinged to one end of the push rod 904. The other end of the push rod 904 is hinged to the second collar 905.

[0047] The scissor-shaped handle has two grips, which are divided into a main grip and an adjusting grip. The main grip is the first connecting rod 901, and the adjusting grip is the second connecting rod 902. The farthest end of the first connecting rod 901 is the first collar 903. Both the first collar 903 and the second collar 905 are in a left and right semi-"C" shape and are connected by a buckle for easy disassembly. The first collar 903 is internally provided with anti-slip stripes to ensure that the first collar 903 is tightly sleeved on the adjusting column 8 of the fixed platform. The second connecting rod 902 is hinged to the second collar 905 through the push rod 904, and the position of the second collar 905 is adjusted and fixed through the lever principle, thereby controlling the tightness of the movable claw 4. This design that combines the scissor-shaped handle with the movable claw - pull rope - sliding ring system realizes the innovation of the control method of the movable claw 4.

[0048] Usage method of this embodiment During use, the first collar 903 and the second collar 905 are sleeved on the adjusting column 8, and the buckle of the first collar 903 and the second collar 905 is locked to fix the first collar 903, and the second collar 905 can move up and down. The staff holds the first hand-held part and the second hand-held part with one hand to clamp. Since the first collar 903 is fixed, the first hand-held part does not move, and the second hand-held part moves downward. The second hand-held part drives the second connecting rod 902 to rotate. The second connecting rod 902 drives the second collar 905 to move upward through the push rod 904, and the second collar 905 pushes the sliding ring 6 to move upward.

[0049] Embodiment 4 Based on the above embodiments, in order to be able to adapt to experimental mice of different sizes, a telescopic assembly is provided between the support rod 2 and the fixed platform 1. The moving part of the telescopic assembly is connected to the support rod 2 for adjusting the length of the support rod 2 extending out of the fixed platform 1.

[0050] Through the telescopic adjustment function of the support rod 2, the fixation requirements of experimental mice of different sizes can be met, the versatility and adaptability of the equipment can be improved, and the fixation difficulties caused by individual differences in experimental mice can be reduced.

[0051] Among them, the telescopic assembly includes a gear 202, an adjusting knob and a plurality of racks 203. The gear 202 is rotatably set on the fixed platform 1. The adjusting knob and the gear 202 are fixedly connected. The racks 203 are all slidably connected to the fixed platform 1, and the sliding direction is along the direction toward or away from the center of the fixed platform 1. The positions of the plurality of racks 203 are staggered up and down, and the plurality of racks 203 are all meshed with the gear 202. The first end of each support rod 2 is fixedly connected to a corresponding rack 203.

[0052] The adjusting knob can be arranged at the top or bottom of the fixed platform 1 for easy manual operation, and the friction between the adjusting knob and the fixed platform 1 can be increased to limit its rotation, and a cover plate 204 is arranged outside the telescopic assembly. The gear 202 is driven to rotate by manually rotating the adjusting knob.

[0053] How to use this embodiment When in use, the adjustment knob is manually turned to drive the gear 202 to rotate. When the gear 202 rotates, the gear rack 203 meshed therewith is driven to move. The gear rack 203 moves to drive the support rod 2 to move outward or inward synchronously to adapt to large or smaller experimental mice. When replacing experimental mice of different sizes, the extension length of the support rod 2 can be quickly adjusted to adapt to the size of the experimental mouse without complicated operation procedures.

[0054] Example 5 After the experimental mouse is fixed, in order to expose the abdomen of the experimental mouse for experimental operation, a support panel 11 is fixed to one end of the adjustment column 8 away from the fixed platform 1, and the support panel 11 is tilted at an angle of 30°-60°.

[0055] How to use this embodiment After the experimental mouse is fixed, the whole device is turned over so that the support panel 11 is supported on the table, and the two baffles 10 are used as two legs to support the bottom to form a triangular support. The abdomen of the experimental mouse can be exposed and can be used for routine laboratory operations such as anesthesia.

[0056] The present invention ingeniously applies the lever principle to design the movable claw 4 and the pull rope system, and cooperates with the detachable scissor-type handle, enabling the experimenter to easily and accurately adjust the tightness of the movable claw 4, greatly simplifying the operation process and improving the experimental efficiency. It helps the experimenter overcome the fear of laboratory mice and also avoids the risk of being bitten by the hand. It can fix the laboratory mice for a long time and fully expose their abdomens, ensuring the safety of laboratory personnel and reducing fear psychology. At the same time, it is convenient for laboratory personnel to perform routine laboratory operations such as anesthesia. Meanwhile, the operating components of the device, such as the adjustment knob, the movable claw 4, the first hand-held part, and the second hand-held part, etc., are reasonably designed and easy to operate. The experimenter can easily adjust and operate the device, improving the experimental efficiency. The device has a compact structure, a small volume, and a light weight, which is convenient for the experimenter to carry and transport.

[0057] The above-disclosed are only the preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A mouse fixator, comprising a fixing platform (1), characterized in that: It also includes four groups of limb fixing components, which are respectively arranged at four corners of the bottom of the fixing platform (1), and each group of limb fixing components includes: A support rod (2), a first end of which is connected to the fixed platform (1), and a second end of which extends toward the bottom periphery of the fixed platform (1); Two supporting claws (3) are arranged opposite to each other, the upper ends of the supporting claws (3) are fixedly connected to the second end of the support rod (2), there is a gap between the two supporting claws (3) and the lower ends are open, and the supporting claws (3) have bending elasticity; Two movable claws (4), which are arranged opposite to each other and located between the two supporting claws (3), the upper ends of the two movable claws (4) being hinged via a hinge, and the lower end of each movable claw (4) being connected to the lower end of the corresponding supporting claw (3); A drawer (5), one end of which is connected to the hinged member; The drawer (5) is pulled upwards, and the movable claw (4) is driven upwards via the hinge, so that the two support claws (3) are bent inwards and deformed so that the two movable claws (4) are relatively buckled.

2. The mouse fixer according to claim 1, characterized in that: The supporting claw (3) comprises a rigid section (301) and a flexible section (302) which are integrally connected; the rigid section (301) is fixed to the support rod (2); the flexible section (302) is fixed to the movable claw (4); and the flexible section (302) has bending elasticity.

3. The mouse fixator according to claim 1, characterized in that: The movable claws (4) are arc-shaped, the concave surfaces of the two movable claws (4) are opposite to each other, and the surfaces of the movable claws (4) are provided with an anti-slip layer.

4. The mouse fixer according to claim 1, characterized in that: A limiting hole (201) is provided at the second end of the support rod (2), the limiting hole (201) is located between the two supporting claws (3), and the drawer (5) passes through the limiting hole (201).

5. The mouse fixator according to claim 1, characterized in that: A telescopic assembly is provided between the support rod (2) and the fixed platform (1), and a moving part of the telescopic assembly is connected to the support rod (2) and is used to adjust the length of the support rod (2) extending out of the fixed platform (1).

6. The mouse fixator according to claim 1, characterized in that: It also comprises an adjusting column (8), a slip ring (6) and a locking structure (7), wherein the adjusting column (8) is arranged on the top of the fixed platform (1), the slip ring (6) is slidably sleeved on the adjusting column (8) up and down, one end of each of the four drawer members (5) is fixed to the slip ring (6), and the locking structure (7) is arranged on the adjusting column (8) and is used to position the slip ring (6).

7. The mouse fixator according to claim 6, characterized in that: The adjusting column (8) is provided with a receiving groove, and the locking structure (7) comprises a limiting plate (701) and an elastic member (702), wherein the receiving groove is used to receive the limiting plate (701), the lower end of the limiting plate (701) is rotatably connected to the side wall of the receiving groove, one end of the elastic member (702) is connected to the inner wall of the receiving groove, and the other end is connected to the top side of the limiting plate (701), and the elastic member (702) is used to push the limiting plate (701) out of the receiving groove.

8. The mouse fixator according to claim 6, characterized in that: The invention also comprises a propulsion structure (9), wherein the propulsion structure (9) comprises a first connecting rod (901), a second connecting rod (902), a first sleeve (903), a push rod (904) and a second sleeve (905); the first connecting rod (901) and the second connecting rod (902) are arranged in a scissor-shaped manner and are hingedly connected; a first hand-held portion is arranged at one end of the first connecting rod (901) and the other end is connected to the first sleeve (903); the first sleeve (903) is sleeved on the adjustment column (8) and the first sleeve (903) is located between the slip ring (6) and the fixed platform (1); the second sleeve (905) is slidably sleeved on the adjustment column (8) and is located between the first sleeve (903) and the slip ring (6); a second hand-held portion is arranged at one end of the second connecting rod (902) and the other end is hingedly connected to one end of the push rod (904); the other end of the push rod (904) is hingedly connected to the second sleeve (905).

9. The mouse fixator according to claim 6, characterized in that: A support panel (11) is fixed to one end of the adjustment column (8) that is away from the fixed platform (1); the support panel (11) is arranged to be inclined, and the inclination angle is 30°-60°.

10. The mouse fixator according to claim 1, characterized in that: It also comprises a head fixing assembly, which comprises two baffles (10), wherein the baffles (10) are arranged in front of the fixing platform (1), the baffles (10) are connected to the fixing platform (1), and the two baffles (10) are arranged at intervals to clamp the head of the experimental mouse.

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