A fixing device for animal medical experiments

Abstract

This invention discloses a fixation device for animal medical experiments, comprising a support frame, a square tube fixedly connected to the bottom of the support frame, a first motor fixedly connected to the side of the square tube, a one-way threaded rod fixedly connected to the output end of the first motor, a sliding frame threadedly connected to the one-way threaded rod, a connecting rack fixedly connected to one side of the sliding frame, and an external toothed ratchet ring meshing with the connecting rack. The support frame is fixedly connected to a first bevel gear, and a disc is fixedly connected to the side of the first bevel gear away from the support frame. This invention effectively avoids experimental interference caused by blood stains and odors, ensuring data accuracy. The device features an automatic post-experiment cleaning mechanism that quickly cleans blood stains and odors from components such as the support frame and flip clamp, preventing residual odors from irritating subsequent experimental animals, reducing abnormal reactions such as animal restlessness and stress, stabilizing physiological indicators such as heart rate and blood pressure, and ensuring the accuracy and consistency of data from multiple batches of experiments.

Description

Technical Field

[0001] This invention relates to the field of animal medical experimental technology, and in particular to a fixation device for animal medical experiments. Background Technology

[0002] Animal medicine experiments serve as a crucial bridge connecting basic medical research and clinical applications, playing an irreplaceable role in drug development, disease mechanism exploration, medical device testing, and vaccine safety verification. Stable immobilization of laboratory animals is a prerequisite for the smooth conduct of various animal medicine experiments. Whether it's intravenous blood collection, intraperitoneal injection, surgery, or imaging monitoring and long-term physiological indicator tracking, it's essential to restrain laboratory animals such as mice, rats, rabbits, and dogs to prevent operational errors, sample contamination, or data deviation caused by their struggles.

[0003] However, bloodstains are highly likely to occur during the measurement of intracranial pressure, intrathoracic pressure, intraperitoneal pressure, and arterial pressure in laboratory animals. In large-scale experiments, residual bloodstains emit an irritating odor, which can cause subsequent exposure to the animal to exhibit abnormal reactions such as restlessness and stress, leading to fluctuations in physiological indicators such as heart rate and blood pressure, severely interfering with the accuracy and stability of experimental data. If researchers clean up bloodstains simultaneously during the experiment, it will interrupt the experimental process, increase the time required to handle each animal, and significantly reduce the overall efficiency of batch experiments. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technical problems in the prior art by providing a fixation device for animal medical experiments.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fixation device for animal medical experiments includes a support frame. A square tube is fixedly connected to the bottom of the support frame, and a first motor is fixedly connected to the side of the square tube. A one-way threaded rod is fixedly connected to the output end of the first motor. A sliding frame is threadedly connected to the one-way threaded rod. A connecting rack is fixedly connected to one side of the sliding frame, and the connecting rack is engaged with an external toothed ratchet ring. The support frame is fixedly connected to a first bevel gear. A disc is fixedly connected to the side of the first bevel gear away from the support frame. A mounting groove is provided on the side of the disc, and a spring is fixedly connected inside the mounting groove. A connecting plate is fixedly connected to the end of the spring away from the mounting groove, and the connecting plate rotates. A fixed block is connected to the bracket, which is fixedly connected to the setting slot. A second bevel gear is meshed with the first bevel gear, and the second bevel gear is fixedly connected to the reciprocating threaded rod. A cleaning strip is threaded onto the surface of the reciprocating threaded rod. A sliding rod is slidably connected to the bracket, and a setting plate is fixedly connected to one end of the sliding rod. An outer box is slidably connected to the setting plate, and a fixed box is pipe-connected to the outer box. A moving plate is slidably connected inside the fixed box, and a connecting rod is fixedly connected to one side of the moving plate. A cleaning arc disk for cleaning the surface of the flip clamp is fixedly connected to the side of the connecting rod away from the moving plate, and a compression spring is fixedly connected to one side of the moving plate.

[0006] The above technical solution further includes: The bracket is fixedly connected to the rotatable base, the second bevel gear is rotatably connected to the mounting block, and the cleaning strip is slidably connected to the bracket.

[0007] An outer box is fixedly connected to the side of the bracket. An inert gas is placed in the interlayer between the outer box and the mounting plate. The inert gas has chemically stable properties. A gas supply pipe is connected to the outer box. A fixed box is fixedly connected to the end of the gas supply pipe away from the outer box.

[0008] An output motor is installed above the sliding frame. A worm gear is fixedly connected to the output end of the output motor. A worm wheel is meshed with the worm gear. A stabilizing frame is rotatably connected to one end of the worm wheel. The stabilizing frame is fixed above the sliding frame. A connecting gear is fixedly connected to the end of the worm gear away from the stabilizing frame. A rack is meshed with the connecting gear. The rack is slidably connected to the sliding frame.

[0009] A second motor is provided on the side of the rack frame, and a flip clamp is fixedly connected to the output end of the second motor. Both ends of the flip clamp are provided with grippers for holding animals.

[0010] The device features symmetrically slidably connected rack frames above the sliding frame. Each rack frame is equipped with a second motor and a flip clamp on its side, with gripping claws at both ends of the flip clamp, enabling symmetrical clamping and fixation of the animal's body and legs. Simultaneously, the second motor drives the flip clamp to rotate, ensuring the contaminated claws face upwards and the clean claws downwards. This prevents cross-infection from contaminated claws contacting the animal, ensuring both secure fixation and adaptability to the clamping needs of experimental animals of different sizes. It also prevents positional displacement caused by animal struggles, providing stable support for precise measurements such as intracranial pressure and arterial pressure.

[0011] A cleaning tank is fixedly connected to the side of the fixed box. An electric cleaning brush is installed inside the cleaning tank. A washing trough is opened on the top of the bracket. The washing trough is used to clean the brush at the bottom of the cleaning strip. A square groove is opened at the bottom of the cleaning strip for inserting the brush.

[0012] On one hand, the cleaning tank fixed to the side of the mounting box has a built-in electric cleaning brush that can automatically clean and disinfect the cleaning arc disc after friction cleaning, ensuring the cleaning effect of the cleaning arc disc on the flipping clamp. On the other hand, the washing tank opened above the bracket can clean the brush at the bottom of the cleaning strip, and the square groove design at the bottom of the cleaning strip allows for quick insertion and removal of the brush, ensuring the stability of the brush's cleaning ability. Through the dual cleaning and disinfection design of the clamp and cleaning components, bloodstains, body fluid residues, and odors are effectively removed, avoiding fluctuations in physiological indicators of animals caused by odor stress in large-scale experiments, and ensuring the accuracy of experimental data.

[0013] A rack frame is symmetrically slidably connected above the sliding frame, and two sets of flip clamps are set above the support frame for holding the animal.

[0014] An inert gas compression chamber is provided between the side of the movable plate away from the compression spring and the fixed box.

[0015] An inert gas compression chamber between the moving plate and the fixed box drives the moving plate to slide back and forth through the compression and reflux of the inert gas. This, in turn, drives the cleaning arc disc to complete the contact cleaning and resetting disinfection of the flip clamp. The inert gas is stable and will not react chemically with bloodstains or disinfectant. Furthermore, the driving process eliminates the risk of mechanical jamming. Compared to traditional spring or motor drives, the cleaning action is smoother, allowing for precise control of the contact force of the cleaning arc disc, preventing damage to the flip clamp's grippers. Simultaneously, it links the cleaning process with the device's resetting process, improving cleaning efficiency.

[0016] The bracket is slidably connected to the connecting rack.

[0017] The support frame and connecting rack are slidably connected, ensuring stability when the sliding frame drives the connecting rack, and guaranteeing the precision of the meshing transmission between the connecting rack and the external toothed ratchet ring, thereby achieving automatic reciprocating cleaning of the cleaning strip. The entire cleaning process requires no manual intervention. The device can simultaneously complete operations such as cleaning the support surface, disinfecting the grippers, and cleaning the brushes during animal release and sliding frame reset, avoiding manual interruption of the experimental process for cleaning, shortening the experimental cycle for a single animal, and significantly improving the turnaround efficiency for large-scale experiments.

[0018] The present invention has the following beneficial effects: 0. In this invention, experimental interference caused by bloodstain odor is effectively avoided, ensuring data accuracy. The device uses an automatic post-experiment cleaning mechanism to quickly clean bloodstains and odors from components such as the support and flip clamp, preventing residual odors from irritating subsequent experimental animals, reducing abnormal reactions such as animal restlessness and stress, stabilizing physiological indicators such as heart rate and blood pressure, and ensuring the accuracy and consistency of experimental data from multiple batches.

[0019] 1. This invention improves the overall efficiency of batch experiments and reduces manual operation costs. Experimenters do not need to interrupt the process to simultaneously clean bloodstains. The device can automatically complete bloodstain cleaning, gripper disinfection, and component reset during animal release and sliding frame reset, eliminating manual cleaning steps, shortening the experimental cycle for a single animal, and achieving seamless integration of cleaning and experimental processes, significantly improving the turnaround efficiency of large-scale experiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a fixation device for animal medical experiments proposed in this invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the side structure in this invention; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the back structure in this invention; Figure 6 for Figure 5 Enlarged diagram of point C in the middle.

[0021] In the diagram: 1. Rotatable base; 2. Bracket; 3. First motor; 4. Square tube; 5. One-way threaded rod; 6. Sliding frame; 7. Connecting rack; 8. External toothed ratchet ring; 81. Disc; 9. Setting slot; 10. Spring; 11. Connecting plate; 12. Fixing block; 13. First bevel gear; 14. Second bevel gear; 15. Mounting block; 16. Reciprocating threaded rod; 17. Cleaning strip; 18. Rack frame; 19. Connecting gear; 20. Worm gear; 21. Stabilizing frame; 22. Worm; 23. Second motor; 24. Flip clamp; 25. Fixing box; 26. Moving plate; 27. Compression spring; 271. Connecting rod; 28. Cleaning arc plate; 29. ​​Cleaning tank box; 30. Outer box; 31. Sliding rod; 32. Setting plate; 33. Gas pipeline. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-6 As shown, this invention is a fixation device for animal medical experiments, including a support 2. A square tube 4 is fixedly connected to the bottom of the support 2. A first motor 3 is fixedly connected to the side of the square tube 4. A one-way threaded rod 5 is fixedly connected to the output end of the first motor 3. A sliding frame 6 is threadedly connected to the one-way threaded rod 5. A connecting rack 7 is fixedly connected to one side of the sliding frame 6. An external toothed ratchet ring 8 is meshed with the connecting rack 7. The support 2 is fixedly connected to a first bevel gear 13. A disc 81 is fixedly connected to the side of the first bevel gear 13 away from the support 2. A setting groove 9 is opened on the side. A spring 10 is fixedly connected inside the setting groove 9. A connecting plate 11 is fixedly connected to the end of the spring 10 away from the setting groove 9. A fixing block 12 is rotatably connected to the connecting plate 11. The fixing block 12 is fixedly connected to the setting groove 9. The first bevel gear 13 is meshed with the second bevel gear 14. The second bevel gear 14 is fixedly connected to the reciprocating threaded rod 16. The surface of the reciprocating threaded rod 16 is threaded with a cleaning strip 17. The bracket 2 is slidably connected to the sliding rod 31. One end of the sliding rod 31 is fixedly connected to the setting plate 32. The setting plate 32 is slidably connected to the outer box 30. The outer box 30 is pipe-connected to the fixing box 25. The fixed box 25 is slidably connected to the moving plate 26. One side of the moving plate 26 is fixedly connected to the connecting rod 271. The side of the connecting rod 271 away from the moving plate 26 is fixedly connected to the cleaning arc disk 28 for cleaning the surface of the flip clamp 24. One side of the moving plate 26 is fixedly connected to the compression spring 27.

[0024] In one embodiment, for the bracket 2, the bracket 2 is fixedly connected to the rotatable base 1, the second bevel gear 14 is rotatably connected to the mounting block 15, and the cleaning strip 17 is slidably connected to the bracket 2.

[0025] In one embodiment, for the bracket 2, an outer box 30 is fixedly connected to the side of the bracket 2. An inert gas is provided in the interlayer between the outer box 30 and the mounting plate 32. The inert gas has the characteristic of chemical stability. A gas supply pipe 33 is pipe-connected to the outer box 30. A fixed box 25 is fixedly connected to the end of the gas supply pipe 33 away from the outer box 30.

[0026] In one embodiment, for the sliding frame 6, an output motor is provided above the sliding frame 6, and a worm 22 is fixedly connected to the output end of the output motor. The worm 22 is meshed with a worm wheel 20, and one end of the worm wheel 20 is rotatably connected to a stabilizing frame 21. The stabilizing frame 21 is fixed above the sliding frame 6, and a connecting gear 19 is fixedly connected to the end of the worm 22 away from the stabilizing frame 21. The connecting gear 19 is meshed with a rack frame 18, and the rack frame 18 is slidably connected to the sliding frame 6.

[0027] In one embodiment, for the rack frame 18, a second motor 23 is provided on the side of the rack frame 18, and a flip clamp 24 is fixedly connected to the output end of the second motor 23. Both ends of the flip clamp 24 are provided with grippers for holding animals.

[0028] In this embodiment, the device symmetrically slides above the sliding frame 6 with rack frames 18. Each rack frame 18 is equipped with a second motor 23 and a flip clamp 24 on its side, and both ends of the flip clamp 24 are equipped with gripping claws, which can realize symmetrical clamping and fixation of the animal's body and legs. At the same time, the second motor 23 can drive the flip clamp 24 to flip, so that the contaminated claws face upwards and the clean claws face downwards, avoiding cross-infection caused by the contaminated claws contacting the animal. This not only ensures the firmness of fixation, but also adapts to the clamping needs of experimental animals of different sizes, prevents the animal from shifting its position due to struggling, and provides stable support for accurate measurement operations such as intracranial pressure and arterial pressure.

[0029] In one embodiment, for the aforementioned fixed box 25, a cleaning tank box 29 is fixedly connected to the side of the fixed box 25. An electric cleaning brush is provided inside the cleaning tank box 29. A washing tank is provided above the bracket 2. The washing tank is used to clean the brush at the bottom of the cleaning strip 17. A square groove is provided at the bottom of the cleaning strip 17 for inserting the brush.

[0030] In this embodiment, on the one hand, the cleaning tank 29 fixed to the side of the fixing box 25 has a built-in electric cleaning brush, which can automatically clean and disinfect the cleaning arc disk 28 after friction cleaning, ensuring the cleaning effect of the cleaning arc disk 28 on the flip clamp 24; on the other hand, the washing tank opened above the bracket 2 can clean the brush at the bottom of the cleaning strip 17, and the square groove design at the bottom of the cleaning strip 17 allows for quick insertion and removal of the brush, ensuring the stability of the brush's cleaning ability. Through the dual cleaning and disinfection design of the clamp and the cleaning components, bloodstains, body fluid residues and odors are effectively removed, avoiding fluctuations in physiological indicators of animals caused by odor stress in large-scale experiments, and ensuring the accuracy of experimental data.

[0031] In one embodiment, for the aforementioned sliding frame 6, a rack frame 18 is symmetrically slidably connected above the sliding frame 6, and two sets of flip clamps 24 provided above the support 2 are used to clamp the animal.

[0032] In one embodiment, for the aforementioned movable plate 26, an inert gas compression chamber is provided between the side of the movable plate 26 away from the compression spring 27 and the fixed box 25.

[0033] In this embodiment, the inert gas compression chamber between the moving plate 26 and the fixed box 25 can drive the moving plate 26 to slide back and forth through the compression and backflow of inert gas, thereby driving the cleaning arc disk 28 to complete the contact cleaning and reset disinfection of the flip clamp 24. The inert gas is stable and will not react chemically with bloodstains or disinfectant, and there is no risk of mechanical jamming during the driving process. Compared with traditional spring or motor drives, the cleaning action is smoother, and the contact force of the cleaning arc disk 28 can be precisely controlled to avoid damage to the gripper of the flip clamp 24. At the same time, the cleaning process and the device reset process are linked, improving cleaning efficiency.

[0034] In one embodiment, the bracket 2 is slidably connected to the connecting rack 7.

[0035] In this embodiment, the bracket 2 is slidably connected to the connecting rack 7, ensuring the stability of the sliding frame 6 when it drives the connecting rack 7 to move, and guaranteeing the accuracy of the meshing transmission between the connecting rack 7 and the external toothed ratchet ring 8, thereby achieving automatic reciprocating cleaning of the cleaning strip 17. The entire cleaning process requires no manual intervention. The device can simultaneously complete operations such as cleaning the bracket surface, disinfecting the grippers, and cleaning the brush during the animal release and the resetting of the sliding frame 6, avoiding manual interruption of the experimental process for cleaning, shortening the experimental cycle of a single animal, and significantly improving the turnover efficiency of large-scale experiments.

[0036] The working principle of the fixation device for animal medical experiments in this invention is as follows: First, the operator places the animal on top of the support 2. Then, the output end of the first motor 3 is controlled to rotate. The output end of the first motor 3 drives the one-way threaded rod 5 to rotate. The rotation of the one-way threaded rod 5 drives the sliding frame 6 to gradually approach the support 2. When the rack frame 18 above the sliding frame 6 is aligned with the animal, the first motor 3 is controlled to stop rotating. Then, the output motor at the bottom of the worm 22 is controlled. The output motor drives the worm 22 to mesh with the worm wheel 20. The worm wheel 20 rotates and drives the connecting gear 19 to mesh with the rack frame 18. The rack frame 18 slides downward, thereby driving the flip clamp 24 on the side of the second motor 23 to fix the animal. Two sets of flip clamps 24 are provided on the surface of the sliding frame 6, which are used to fix the animal's body and legs respectively.

[0037] Meanwhile, as the sliding frame 6 moves, it drives the connecting rack 7 to move as well. The movement of the connecting rack 7 engages with the external toothed ratchet ring 8, causing the external toothed ratchet ring 8 to rotate clockwise. Each time the teeth inside the external toothed ratchet ring 8 encounter the connecting plate 11, the connecting plate 11 is pressed by the teeth inside the external toothed ratchet ring 8, causing the connecting plate 11 to rotate around the fixed block 12. Since there are gaps between the teeth inside the external toothed ratchet ring 8, when the connecting plate 11 is pressed and rotated, it compresses the spring 10, accumulating elastic potential energy. When the connecting plate 11 is between two teeth, the spring 10 pushes the connecting plate 11 to return to its original rotation. Thus, even though the external toothed ratchet ring 8 rotates while the sliding frame 6 drives the connecting rack 7 to move, it cannot drive the circular... The disc 81 rotates. After the animal experiment is completed, the surface of the support 2 may be stained with blood, body fluids, etc. First, the output motor at the bottom of the worm 22 is controlled to rotate in the opposite direction. Then, the worm 22 meshes with the worm wheel 20 in the opposite direction, thereby driving the connecting gear 19 to rotate in the opposite direction. The connecting gear 19 drives the rack frame 18 to mesh in the opposite direction. Then, the flipping clamp 24 on the side of the rack frame 18 gradually moves away from the animal. Then, during the upward movement of the rack frame 18, the second motor 23 is controlled to drive the flipping clamp 24 to rotate in the opposite direction, so that the contaminated clamps face upward and the uncontaminated ones face downward. The output end of the first motor 3 is controlled to rotate. Then, the first motor 3 will drive the one-way threaded rod 5 to rotate in the opposite direction. Then, the one-way threaded rod 5 meshes with the sliding frame 6. The sliding frame 6 gradually moves away from the support 2, causing the connecting rack 7 to move in the opposite direction. The connecting rack 7 then rotates the external toothed ratchet ring 8 in the opposite direction. At this time, the teeth inside the external toothed ratchet ring 8 push the connecting plate 11 towards the edge of the groove 9, preventing the connecting plate 11 from rotating. The connecting plate 11 is continuously pushed by one of the teeth inside the external toothed ratchet ring 8 as it rotates. The external toothed ratchet ring 8 then drives the disc 81 to rotate counterclockwise. The disc 81 then drives the first bevel gear 13 to rotate, meshing with the second bevel gear 14. During the rotation of the second bevel gear 14, it drives the reciprocating threaded rod 16 to rotate. Meanwhile, the sliding frame 6 returns to its initial position... During the initial positioning process, the cleaning strip 17 slides back and forth along the surface of the reciprocating threaded rod 16. When the cleaning strip 17 is completely against one side of the bracket 2, it compresses the sliding rod 31. The sliding rod 31 then pushes the setting plate 32 to completely compress the inert gas inside the outer box 30 into the space between the fixed box 25 and the moving plate 26. The moving plate 26 then pushes the connecting rod 271. A cleaning arc disk 28 is provided on one side of the connecting rod 271. After the cleaning arc disk 28 detaches from the cleaning tank box 29, it is completely against one side of the rack frame 18. During the sliding process, the moving plate 26 compresses the compression spring 27. When the cleaning strip 17 gradually moves away from one side of the bracket 2, the sliding rod 31 is no longer compressed, and the compression spring 27 releases its elastic potential energy.Then, the moving plate 26 will drive the cleaning arc plate 28 on the side of the connecting rod 271 to reset. The cleaning arc plate 28 then cleans the contaminated side of the flip clamp 24 by friction before re-entering the cleaning tank 29 for disinfection. During the process of the compression spring 27 pushing the moving plate 26, inert gas is re-transported along the gas supply pipe 33 into the space between the setting plate 32 and the outer box 30. The inert gas completely enters the space between the setting plate 32 and the outer box 30, ultimately resetting the sliding rod 31. After the cleaning strip 17 is fully reset, it enters the washing tank on the surface of the bracket 2 for disinfection. A removable brush is located at the bottom of the cleaning strip 17 for easy replacement if damaged.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixation device for animal medical experiments, characterized in that, The system includes a bracket (2), a square tube (4) fixedly connected to the bottom of the bracket (2), a first motor (3) fixedly connected to the side of the square tube (4), a one-way threaded rod (5) fixedly connected to the output end of the first motor (3), a sliding frame (6) threadedly connected to the one-way threaded rod (5), a connecting rack (7) fixedly connected to one side of the sliding frame (6), an external toothed ratchet ring (8) meshing with the connecting rack (7), the bracket (2) fixedly connected to a first bevel gear (13), a disc (81) fixedly connected to the side of the first bevel gear (13) away from the bracket (2), a setting groove (9) is provided on the side, a spring (10) fixedly connected inside the setting groove (9), a connecting plate (11) fixedly connected to the end of the spring (10) away from the setting groove (9), a fixing block (12) rotatably connected to the connecting plate (11), and the fixing block (12) and... The set slot (9) is fixedly connected, the first bevel gear (13) is meshed with the second bevel gear (14), the second bevel gear (14) is fixedly connected with the reciprocating threaded rod (16), the surface of the reciprocating threaded rod (16) is threaded with a cleaning strip (17), the bracket (2) is slidably connected with a sliding rod (31), one end of the sliding rod (31) is fixedly connected with a set plate (32), the set plate (32) is slidably connected with an outer box (30), the outer box (30) is pipe-connected with a fixed box (25), the fixed box (25) is slidably connected with a moving plate (26), one side of the moving plate (26) is fixedly connected with a connecting rod (271), the side of the connecting rod (271) away from the moving plate (26) is fixedly connected with a cleaning arc disk (28) for cleaning the surface of the flip clamp (24), and one side of the moving plate (26) is fixedly connected with a compression spring (27).

2. The fixation device for animal medical experiments according to claim 1, characterized in that, The bracket (2) is fixedly connected to the rotatable base (1), the second bevel gear (14) is rotatably connected to the mounting block (15), and the cleaning strip (17) is slidably connected to the bracket (2).

3. The fixation device for animal medical experiments according to claim 1, characterized in that, The bracket (2) is fixedly connected to an outer box (30) on its side. An inert gas is provided in the interlayer between the outer box (30) and the setting plate (32). The inert gas has the characteristic of chemical stability. The outer box (30) is connected to a gas supply pipe (33). The end of the gas supply pipe (33) away from the outer box (30) is fixedly connected to a fixing box (25).

4. The fixation device for animal medical experiments according to claim 1, characterized in that, An output motor is provided above the sliding frame (6). A worm gear (22) is fixedly connected to the output end of the output motor. A worm wheel (20) is meshed with the worm gear (22). A stabilizing frame (21) is rotatably connected to one end of the worm wheel (20). The stabilizing frame (21) is fixed above the sliding frame (6). A connecting gear (19) is fixedly connected to the end of the worm gear (22) away from the stabilizing frame (21). A rack frame (18) is meshed with the connecting gear (19). The rack frame (18) is slidably connected to the sliding frame (6).

5. A fixation device for animal medical experiments according to claim 4, characterized in that, The rack frame (18) is provided with a second motor (23) on its side. The output end of the second motor (23) is fixedly connected to a flip clamp (24). Both ends of the flip clamp (24) are provided with grippers for holding animals.

6. A fixation device for animal medical experiments according to claim 1, characterized in that, The fixed box (25) is fixedly connected to the side of the cleaning tank box (29), the cleaning tank box (29) is equipped with an electric cleaning brush, the bracket (2) is provided with a washing tank above it, the washing tank is used to clean the brush at the bottom of the cleaning strip (17), the cleaning strip (17) is provided with a square groove at the bottom, the square groove is used for inserting the brush.

7. A fixation device for animal medical experiments according to claim 1, characterized in that, A rack frame (18) is symmetrically slidably connected above the sliding frame (6), and two sets of flip clamps (24) set above the support (2) are used to hold the animal.

8. A fixation device for animal medical experiments according to claim 1, characterized in that, An inert gas compression chamber is provided between the side of the movable plate (26) away from the compression spring (27) and the fixed box (25).

9. A fixation device for animal medical experiments according to claim 1, characterized in that, The bracket (2) is slidably connected to the connecting rack (7).

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