Animal gait analysis device

Abstract

The utility model discloses an animal gait analysis device, and belongs to the technical field of medical research. Comprising a limb marking cage and a linear gait analysis footpath, and the gait analysis footpath is connected behind the limb marking cage; the limb marking cage comprises a supporting bottom frame, a left surrounding plate, a right surrounding plate, a front lifting door, a rear lifting door and a cover plate, a hollow cavity is defined by the supporting bottom frame, the left surrounding plate, the right surrounding plate, the front lifting door, the rear lifting door and the cover plate, a vertically-through hole shaped like a Chinese character'tian 'is formed in the supporting bottom frame, and a groove position used for containing ink is formed below the hole shaped like the Chinese character'tian'. A drawing plate is movably arranged on the hole shaped like the Chinese character'tian '; the gait analysis footpath comprises a bottom plate, a surrounding plate, a front door plate and a rear door plate, the bottom plate, the surrounding plate, the front door plate and the rear door plate define a hollow cavity, an inlet is formed in the front door plate, and an outlet is formed in the rear door plate. It can be guaranteed that an animal walks linearly during a gait experiment, and gait confusion of an operative limb and other limbs is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical research, and particularly relates to an animal gait analysis device. Background Art

[0002] Skeletal muscle is one of the most abundant tissues in the human body and has the ability to regenerate itself following tissue damage. The regenerative capacity of skeletal muscle tissue is limited by the extent of the injury: severe damage can result in a permanent loss of muscle mass, thereby reducing, or in the worst case, completely impairing, muscle function. This disabling pathological condition, known as volumetric muscle loss (VML), is also a pathological condition that prevents myofiber regeneration and can occur after severe primary trauma (e.g., impact, blast, or penetrating injuries) or surgical ablation of sarcomas.

[0003] Since large experimental animal models such as pigs, goats, and sheep are similar to humans in anatomy and skeletal muscle proteomics, and their limb length, spinal cord morphology, and body weight are larger than those of rodents, they can better simulate the biomechanical forces of walking experienced by adult humans. Skeletal muscle tissue engineering medical research based on gait analysis of these animal models has great reference value for the treatment of skeletal muscle diseases in the human body.

[0004] However, at present, there are limited conditions for conducting gait analysis on large experimental animals after nerve and muscle damage. The equipment commonly used in gait experiments can be divided into three categories: motion capture systems, surface electromyography systems, and plantar pressure measurement systems. These three types of equipment all use high-precision sensors in conjunction with computers, and are relatively expensive. When used in laboratories, their maintenance costs are high. At the same time, when using such high-end equipment, it has high requirements for basic configurations such as communications and electricity in the environment, which makes it inconvenient for large animals to conduct experiments in familiar environments or even daily life environments. Environmental changes have a greater impact on animal emotions, and animals are prone to escape, run around, and other behaviors in unfamiliar environments, which will affect gait analysis.

[0005] In addition, when conducting a gait analysis experiment, it is usually necessary to immerse the animal's surgical limb in an ink box for marking, so as to facilitate the acquisition of the animal's surgical limb's gait when the animal is walking. Because animals are prone to stress reactions such as struggling, running and jumping under mandatory human control, when the existing gait analysis device marks the animal's surgical limb, the animal will spill the ink box on the ground due to stress reactions, and the animal's limbs will be marked with ink, resulting in multiple footprints on the gait paper, making it impossible to distinguish the footprints of the surgical limb and the non-surgical limb. In the process from the animal walking out of the pig cage to the animal walking smoothly to the end of the gait analysis, the unfamiliar environment, different smells and temperatures will cause it to have a stress reaction, and the slight changes in the external environment will easily make its spirit in a state of tension and attract its attention, resulting in behaviors such as running around, colliding, stagnating, etc., which makes it impossible to complete the entire gait process (in a straight line). Utility Model Content

[0006] In order to solve the above problems, the purpose of the utility model is to provide an animal gait analysis device to avoid confusion between the footprints of the operated limb and other limbs of the animal during the gait analysis experiment.

[0007] Another object of the utility model is to provide an animal gait analysis device, which can ensure that the animal walks in a straight line during a gait analysis experiment.

[0008] To achieve the above purpose, the technical solution of the utility model is as follows:

[0009] The utility model provides an animal gait analysis device, comprising a limb marking cage and a linear gait analysis walkway, wherein the gait analysis walkway is connected to the rear of the limb marking cage.

[0010] Furthermore, the limb marking cage includes: a supporting frame, a left panel, a right panel, a front sliding door, a rear lifting door, and a cover plate. The supporting frame, the left panel, the right panel, the front sliding door, the rear lifting door, and the cover plate are enclosed to form a hollow cavity. The supporting frame is provided with a field hole that passes through from top to bottom. A slot for placing ink is provided below the field hole, and a drawer is movably provided on the field hole.

[0011] In the present application, ink boxes loaded with inks of different colors are placed in the slots below the four holes of the zigzag hole. After the animal is driven into the limb marking cage, the animal's limbs are respectively located on the four holes of the zigzag hole. The draw plate is removed, and the animal's limbs are immersed in different ink boxes and dyed with inks of different colors, thereby distinguishing the operated limb from other limbs and facilitating the observation of the gait of the operated limb.

[0012] Furthermore, the support base is provided with an insertion and withdrawal groove on the field hole, and the withdrawal plate is movably installed in the insertion and withdrawal groove.

[0013] Further, the cross-shaped hole includes a left front hole, a right front hole, a left rear hole, and a right rear hole. The left front hole, the right front hole, the left rear hole, and the right rear hole combine to form a cross-shaped structure. A plugging chute is provided on the side wall of each of the left front hole, the right front hole, the left rear hole, and the right rear hole. Four plugging plates are provided, and the four plugging plates are movably installed one by one in the four plugging chutes.

[0014] Further, a reinforcing bracket is also installed at the bottom of the support chassis. The reinforcing bracket is in a cross-shaped structure, and the cross-shaped hole of the reinforcing bracket corresponds to the cross-shaped hole on the support chassis in position.

[0015] Further, a brake roller is also installed at the bottom of the reinforcing bracket.

[0016] Further, a lower mesh plate is also laid above the support chassis. The four limbs of the animal extend into the cross-shaped hole through the mesh holes on the mesh plate.

[0017] Further, the cover plate is made of a mesh plate, which can facilitate the ventilation of the animal.

[0018] Further, a first positioning tube is vertically provided above each of the four corners of the support chassis. Positioning holes are also provided at the four corners of the support chassis. The first positioning tube is provided directly above the positioning hole. The limb marking cage further includes two U-shaped first positioning pins, which are arranged oppositely, and the first positioning pins are respectively inserted into the first positioning tubes and the positioning holes on both sides.

[0019] Further, both the left enclosure plate and the right enclosure plate are in a "凵" shape structure. The first positioning tube is attached to the inner sides of the left enclosure plate and the right enclosure plate, and a clamping groove is formed between the first positioning tube and the left enclosure plate and the right enclosure plate. The front lifting door and the rear lifting door are both movably inserted into the clamping groove.

[0020] Further, a grip hole is provided at one end of the plugging plate, the front lifting door, and the rear lifting door, and the grip hole is exposed outside the limb marking cage. The staff can hold the grip hole and insert or pull out the plugging plate, the front lifting door, and the rear lifting door from the limb marking cage to realize the assembly of the limb marking cage.

[0021] Further, the assembly method of the limb marking cage of the present application:

[0022] 1. First, fix the brake rollers to the four corners below the reinforcing bracket by welding;

[0023] 2. Weld the support chassis above the reinforcing bracket and leave the plugging chutes;

[0024] 3. Insert the plugging plate into the plugging chute, and the plugging plate can slide in and out of the support chassis;

[0025] 4. Lay the lower mesh plate on the supporting frame;

[0026] 5. Weld the first positioning tube to the inner side of the left and right panels, and then enclose the left and right panels on the supporting frame;

[0027] 6. Insert the first positioning pin into the positioning holes at the four corners of the first positioning tube and the supporting frame;

[0028] 7. Finally, insert the front sliding door and the rear lifting door into the clamping grooves on both sides of the first positioning pin.

[0029] Furthermore, the gait analysis walkway includes a bottom plate, a panel, a front door plate, and a rear door plate, the bottom plate, the panel, the front door plate, and the rear door plate enclose a hollow cavity, the front door plate is provided with an inlet, the rear door plate is provided with an outlet, the front door plate and the rear door plate are both provided with pull-out grooves, the pull-out grooves are located on the sides of the inlet and the outlet, and the pull-out grooves are provided with pull-out door plates. In the present application, after the animal has its surgical limb marked with ink in a limb marking cage, it enters the gait analysis walkway through the inlet of the front door plate, walks in the gait analysis walkway, and completes the gait process.

[0030] Furthermore, a limiting slide rail is installed on the top surface of the base plate, and the bottom of the enclosure plate is slidably connected to the limiting slide rail, which can facilitate the sliding installation of the enclosure plate.

[0031] Furthermore, a reinforcement frame is installed on the bottom surface of the base plate, and a roller with a brake is installed on the bottom of the reinforcement frame.

[0032] Furthermore, the enclosures are arranged on both sides above the base plate, and multiple enclosures are arranged on both sides of the base plate, the enclosures on both sides are connected through the front door plate and the rear door plate, and the enclosures on the same side are connected in sequence, and second limiting tubes are arranged on the left and right sides of the inner sides of the enclosures, the front door plate and the rear door plate, and the gait analysis walkway also includes a U-shaped second positioning pin, and the second positioning pin is movably inserted into the second limiting tubes on both sides to realize the connection between two adjacent enclosures and realize the connection between the enclosure and the front door plate and the rear door plate.

[0033] Furthermore, the outer side walls of the front door panel and the rear door panel are each provided with two "L"-shaped insertion strips, and the two "L"-shaped insertion strips are arranged opposite to each other to form the pull-out groove.

[0034] Furthermore, the drawer door panel is of an "L"-shaped structure, so that one side thereof is located outside the drawer groove, thereby facilitating extraction and insertion of the drawer door panel.

[0035] Furthermore, the bottom plates are provided with five pieces, and the five bottom plates are connected in sequence to form a linear structure, thereby forming a linear gait analysis walkway, which is convenient for animals to walk along a straight line.

[0036] Furthermore, each of the base plates is provided with a reinforcement frame, and adjacent reinforcement frames are connected via reinforcement buckles.

[0037] Furthermore, the assembly method of the gait analysis walkway of the present application is as follows:

[0038] 1. Weld the brake rollers to the four corners under each reinforcement frame, and then weld the bottom plate to the reinforcement frame;

[0039] 2. Weld the limit rails to the long side of the bottom plate and connect them to each reinforcement frame through two reinforcement buckles;

[0040] 3. Enclose the enclosure, front door panel, and rear door panel on the bottom plate, and insert the second positioning pin into the second limiting tube to realize the assembly of the enclosure, front door panel, rear door panel, and bottom plate;

[0041] 4. Install the pull-out door panels onto the front door panels and rear door panels respectively to complete the assembly.

[0042] Compared with the prior art, the utility model can mark the operated limb of the animal through the limb marking cage before the animal gait experiment, distinguish the operated limb from other limbs, and avoid confusion in the animal's gait; and can ensure that the animal walks in a straight line during the gait experiment through a linear gait analysis trail; at the same time, the gait analysis device has a simple structure, and can basically isolate the behaviors of people and animals in the outside world on the trail, and can even be assembled and tested directly near the living area of ​​large animals, so that the difference between the experimental environment and the animal's living environment is small, and the animal will not be in a state of stress (abnormal behaviors such as roaring and colliding) due to excessive changes in odor, temperature and surrounding environment, thereby causing great errors in the experiment. It is not only conducive to accurately marking the operated limb, but also allows the animal to be in a constant area that is not affected by the external environment during the gait analysis experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of a gait analysis device.

[0044] Figure 2 It is a schematic diagram of the structure of the limb marking cage.

[0045] Figure 3 It is an exploded view of the limb marking cage.

[0046] Figure 4 is a cross-sectional view of a limb marking cage.

[0047] Figure 5yes Figure 4 A partial enlarged view of the AA point in the middle.

[0048] Figure 6 It is a structural schematic diagram of the assembly of a supporting chassis, a reinforcing bracket, and a roller with a brake.

[0049] Figure 7 It is a structural diagram of the right enclosure.

[0050] Figure 8 It is a schematic diagram of the structure of the gait analysis trail.

[0051] Fig. 9 An exploded view of the gait analysis trail.

[0052] Fig.10 It is a structural schematic diagram of a limit slide rail.

[0053] Fig.11 It is a structural diagram of the front door panel from the first perspective.

[0054] Fig.12 It is a structural diagram of the front door panel from a second perspective.

[0055] Fig.13 It is a structural schematic diagram of a drawer door panel.

[0056] Fig.14 It is a structural diagram of the enclosure.

[0057] Fig.15 It is a structural schematic diagram of a roller with a brake.

[0058] Description of labels:

[0059] 1. Limb marking cage; 11. Support chassis; 12. Left enclosure; 13. Right enclosure; 14. Front sliding door; 15. Rear lifting door; 16. Cover plate; 17. Field hole; 171. Left front hole; 172. Right front hole; 173. Left rear hole; 174. Right rear hole; 18. Slot; 19. Drawer plate; 110. Drawer slide; 111. Strengthening bracket; 112. Roller with brake; 113. Lower net plate; 114. First positioning tube; 115. Positioning hole; 116. First positioning pin; 117. Clamping groove; 118. Grip hole;

[0060] 2. Gait analysis walkway; 21. Bottom plate; 22. Enclosure; 23. Front door panel; 24. Rear door panel; 25. Inlet; 26. Exit; 27. Pull-out groove; 28. Pull-out door panel; 29. ​​Limiting slide rail; 210. Reinforcement frame; 211. Roller with brake; 212. Second limiting tube; 213. Second positioning pin; 214. Insert strip. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0062] To achieve the above purpose, the technical solution of the utility model is as follows:

[0063] See also Figure 1-15 As shown, this embodiment provides a gait analysis device for Bama miniature pigs, including: a limb marking cage 1, a linear gait analysis walkway 2, and the gait analysis walkway 2 is connected to the back of the limb marking cage 1.

[0064] like Figure 2-7 The limb marking cage 1 includes: a supporting frame 11, a left panel 12, a right panel 13, a front sliding door 14, a rear lifting door 15, and a cover plate 16. The supporting frame 11, the left panel 12, the right panel 13, the front sliding door 14, the rear lifting door 15, and the cover plate 16 enclose a hollow cavity. A vertically penetrating field hole 17 is provided on the supporting frame 11, and a slot 18 for placing ink is provided below the field hole 17. A drawer 19 is movably provided on the field hole 17.

[0065] In the present application, ink cartridges loaded with inks of different colors are placed in the slots 18 below the four holes of the zigzag hole 17. After the Bama miniature pig is driven into the limb marking cage 1, the four limbs of the Bama miniature pig are respectively located on the four holes of the zigzag hole 17. The draw plate 19 is removed, and the four limbs of the Bama miniature pig are respectively immersed in different ink cartridges and dyed with inks of different colors, or only the operated limb is immersed in the ink cartridge, so as to distinguish the operated limb from other limbs and facilitate the observation of the gait of the operated limb.

[0066] Furthermore, the support base frame 11 is provided with an insertion and withdrawal groove 110 on the field hole 17 , and the withdrawal plate 19 is movably installed in the insertion and withdrawal groove 110 .

[0067] Furthermore, the field hole 17 includes a left front hole 171, a right front hole 172, a left rear hole 173, and a right rear hole 174, which are combined to form a field-shaped structure, and a pull-in slide groove 110 is provided on the side walls of the left front hole 171, the right front hole 172, the left rear hole 173, and the right rear hole 174, and four pull-out plates 19 are provided, and the four pull-out plates 19 are movably installed in the four pull-in slide grooves 110 in a one-to-one manner.

[0068] Furthermore, a reinforcing bracket 111 is installed at the bottom of the supporting base frame 11 . The reinforcing bracket 111 is a 'T'-shaped structure, and the 'T'-shaped holes 17 of the reinforcing bracket 111 correspond to the positions of the 'T'-shaped holes 17 on the supporting base frame 11 .

[0069] Furthermore, brake rollers 112 are installed at the bottom of the reinforcement bracket 111.

[0070] Furthermore, a lower mesh plate 113 is laid above the support chassis 11, and the four limbs of the Bama miniature pigs extend into the cross-shaped holes 17 through the mesh holes on the mesh plate.

[0071] Furthermore, the cover plate 16 is made of a mesh plate, which can facilitate the ventilation of the Bama miniature pigs.

[0072] Furthermore, a first positioning tube 114 is vertically arranged above each of the four corners of the support chassis 11, positioning holes 115 are also arranged at the four corners of the support chassis 11, the first positioning tube 114 is arranged directly above the positioning holes 115, and the limb marking cage further includes two U-shaped first positioning pins 116. The first positioning pins 116 are arranged oppositely, and the first positioning pins 116 are respectively inserted into the first positioning tubes 114 and the positioning holes 115 on both sides.

[0073] Furthermore, both the left enclosure plate 12 and the right enclosure plate 13 are in a "U" shape structure. The first positioning tube 114 is fitted and arranged on the inner sides of the left enclosure plate 12 and the right enclosure plate 13, and a clamping groove 117 is formed between the first positioning tube 114 and the left enclosure plate 12 and the right enclosure plate 13. The front lifting door 14 and the rear lifting door 15 are both movably inserted into the clamping groove 117.

[0074] Furthermore, a grip hole 118 is arranged at one end of the draw plate 19, the front lifting door 14, and the rear lifting door 15, and the grip hole 118 is exposed outside the limb marking cage. The staff can hold the grip hole 118 and insert or withdraw the draw plate 19, the front lifting door 14, and the rear lifting door 15 into or out of the limb marking cage to realize the assembly of the limb marking cage 1.

[0075] Furthermore, the assembly method of the limb marking cage 1 of the present application:

[0076] 1. First, fix the brake rollers 112 at the four corners below the reinforcement bracket 111 by welding.

[0077] 2. Weld the support chassis 11 above the reinforcement bracket 111 and leave a draw-in and draw-out chute 110.

[0078] 3. Insert the draw plate 19 into the draw-in and draw-out chute 110, and the draw plate 19 can slide in and out of the support chassis 11.

[0079] 4. Lay the lower mesh plate 113 on the support chassis 11.

[0080] 5. Weld the first positioning tube 114 on the inner sides of the left enclosure plate 12 and the right enclosure plate 13, and then enclose the left enclosure plate 12 and the right enclosure plate 13 around the support chassis 11.

[0081] 6. Insert the first positioning pin 116 into the first positioning tube 114 and the positioning holes 115 at the four corners of the support frame 11;

[0082] 7. Finally, insert the front sliding door 14 and the rear lifting door 15 into the clamping grooves 117 on both sides of the first positioning pin 116.

[0083] like Figure 8-15 , the gait analysis trail 2 includes a bottom plate 21, a panel 22, a front door plate 23, and a rear door plate 24, the bottom plate 21, the panel 22, the front door plate 23, and the rear door plate 24 enclose a hollow cavity, the front door plate 23 is provided with an inlet 25, the rear door plate 24 is provided with an outlet 26, the front door plate 23 and the rear door plate 24 are both provided with a pull-out groove 27, the pull-out groove 27 is located on the side of the inlet 25 and the outlet 26, and the pull-out groove 27 is provided with a pull-out door plate 28. In this application, after the Bama miniature pigs are marked with ink on the surgical limbs in the limb marking cage 1, they enter the gait analysis trail 2 through the inlet 25 of the front door plate 23, walk in a straight line in the gait analysis trail 2, and complete the gait process. The panel 22 can basically isolate the behavior of people and pigs in the outside world in the trail, ensuring that the pigs are in a constant area affected by the external environment, making the gait experiment more realistic.

[0084] Furthermore, a limiting slide rail 29 is installed on the top surface of the bottom plate 21 , and the bottom of the enclosure 22 is slidably connected to the limiting slide rail 29 , which can facilitate the sliding installation of the enclosure 22 .

[0085] Furthermore, a reinforcing frame 210 is installed on the bottom surface of the bottom plate 21 , and a roller 211 with a brake is installed on the bottom of the reinforcing frame 210 .

[0086] Furthermore, the enclosures 22 are arranged on both sides above the base plate 21, and multiple enclosures 22 are arranged on both sides of the base plate 21. The enclosures 22 on both sides are connected through the front door plate 23 and the rear door plate 24, and the enclosures 22 on the same side are connected in sequence. The left and right sides of the inner sides of the enclosures 22, the front door plate 23 and the rear door plate 24 are provided with second limiting tubes 212, and the gait analysis walkway 2 also includes a U-shaped second positioning pin 213, which is movably inserted into the second limiting tubes 212 on both sides to realize the connection between the two adjacent enclosures 22, and to realize the connection between the enclosure 22 and the front door plate 23 and the rear door plate 24.

[0087] Furthermore, two “L”-shaped inserting strips 214 are disposed on the outer side walls of the front door panel 23 and the rear door panel 24 , and the two “L”-shaped inserting strips 214 are disposed opposite to each other to form a pull-out groove 27 .

[0088] Furthermore, the drawer door panel 28 is an “L”-shaped structure, with one side of the drawer door panel 28 being located outside the drawer slot 27 , so that the drawer door panel 28 can be easily removed and inserted.

[0089] Furthermore, five bottom plates 21 are provided, and the five bottom plates 21 are connected in sequence to form a linear structure, thereby forming a linear gait analysis trail 2, which is convenient for the Bama miniature pig to walk along a straight line. Correspondingly, five reinforcing frames 210 and the enclosures 22 on the left and right sides are provided.

[0090] Furthermore, each base plate 21 is provided with a reinforcement frame 210 , and adjacent reinforcement frames 210 are connected via reinforcement buckles.

[0091] Furthermore, the assembly method of the gait analysis trail 2 of the present application is as follows:

[0092] 1. Weld the brake rollers 211 to the four corners below each reinforcement frame 210, and then weld the bottom plate 21 to the reinforcement frame 210;

[0093] 2. Weld the limit rail 29 to the long side of the bottom plate 21 and connect each reinforcement frame 210 through two reinforcement buckles;

[0094] 3. Enclose the enclosure 22, the front door panel 23, and the rear door panel 24 on the bottom panel 21, and insert the second positioning pin 213 into the second position limiting tube 212 to realize the assembly of the enclosure 22, the front door panel 23, the rear door panel 24, and the bottom panel 21;

[0095] 4. Then install the drawer door panel 28 onto the front door panel 23 and the rear door panel 24 respectively, and the assembly is completed.

[0096] Compared with the prior art, the utility model can mark the surgical limbs of Bama miniature pigs through the limb marking cage 1 before the gait experiment of Bama miniature pigs, distinguish the surgical limbs from other limbs, and avoid confusion in the gait of Bama miniature pigs; and can ensure that the Bama miniature pigs walk in a straight line during the gait experiment through the linear gait analysis trail 2. At the same time, the gait analysis device has a simple structure, and can basically isolate the behaviors of people and animals in the trail from the outside world, and can even be directly assembled near the living area of ​​large animals to conduct experiments, so that the difference between the experimental environment and the animal living environment is small, so that the animals are not in a state of stress (abnormal behaviors such as roaring and colliding) due to excessive changes in smell, temperature and surrounding environment, thereby causing great errors in the experiment. Therefore, the gait analysis device is not only conducive to accurately marking the surgical limbs, but also allows the pigs to be in a constant area that is not affected by the external environment during the experimental process of gait analysis.

[0097] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An animal gait analysis device, characterized in that: Including: A limb marking cage and a linear gait analysis walkway, the gait analysis walkway being connected after the limb marking cage; The limb marking cage includes: a support chassis, a left enclosure panel, a right enclosure panel, a front lifting door, a rear lifting door, and a cover plate. The support chassis, the left enclosure panel, the right enclosure panel, the front lifting door, the rear lifting door, and the cover plate enclose to form a hollow cavity. A cross-shaped hole penetrating up and down is provided on the support chassis. A slot for placing ink is provided below the cross-shaped hole. A pull-out plate is movably arranged on the cross-shaped hole; The gait analysis walkway includes a bottom plate, an enclosure panel, a front door panel, and a rear door panel. The bottom plate, the enclosure panel, the front door panel, and the rear door panel enclose to form a hollow cavity. An inlet is provided on the front door panel, and an outlet is provided on the rear door panel. Pull-out slots are provided on both the front door panel and the rear door panel. The pull-out slots are located on the sides of the inlet and the outlet. Pull-out door panels are provided on the pull-out slots; 2. An animal gait analysis device as claimed in claim 1, characterized in that: The support chassis is provided with insertion and sliding grooves on the cross-shaped hole, and the pull-out plate is movably installed in the insertion and sliding grooves; 3. An animal gait analysis device as claimed in claim 2, characterized in that: In step S4, the cross-shaped hole includes a left front hole, a right front hole, a left rear hole, and a right rear hole. The left front hole, the right front hole, the left rear hole, and the right rear hole are combined to form a cross-shaped structure. One insertion and sliding groove is provided on the side walls of the left front hole, the right front hole, the left rear hole, and the right rear hole. Four pull-out plates are provided, and the four pull-out plates are movably installed one by one in the four insertion and sliding grooves; 4. The animal gait analysis device according to claim 1, characterized in that: A strengthening bracket is further installed at the bottom of the support chassis. The strengthening bracket is of a cross-shaped structure, and the cross-shaped hole of the strengthening bracket corresponds to the cross-shaped hole on the support chassis in position; 5. An animal gait analysis device as claimed in claim 4, characterized in that: Brake rollers are further installed at the bottom of the strengthening bracket; A lower mesh plate is further laid above the support chassis, and the four limbs of the animal extend into the cross-shaped hole through the mesh holes on the mesh plate; 6. The animal gait analysis device according to claim 1, characterized in that: One first positioning tube is vertically provided above each of the four corners of the support chassis. Positioning holes are further provided at the four corners of the support chassis. The first positioning tube is provided directly above the positioning hole. The limb marking cage further includes two U-shaped first positioning pins, which are oppositely arranged, and the first positioning pins are respectively inserted into the first positioning tubes and the positioning holes on both sides; 7. An animal gait analysis device as claimed in claim 6, characterized in that: Both the left enclosure panel and the right enclosure panel are of a "凵" - shaped structure. The first positioning tube is attached to the inner sides of the left enclosure panel and the right enclosure panel, and a clamping groove is formed between the first positioning tube and the left enclosure panel and the right enclosure panel. The front lifting door and the rear lifting door are both movably inserted into the clamping groove; 8. The animal gait analysis device according to claim 1, characterized in that: A limiting slide rail is further installed on the top surface of the bottom plate, and the bottom of the enclosure panel is slidably connected in the limiting slide rail; 9. The animal gait analysis device according to claim 1, characterized in that: The enclosure panel is arranged on both sides above the bottom plate. A plurality of the enclosure panels are provided on both sides of the bottom plate. The enclosure panels on both sides are connected by the front door panel and the rear door panel. The enclosure panels on the same side are sequentially connected. Second limiting tubes are provided on the left and right sides of the inner surfaces of the enclosure panel, the front door panel, and the rear door panel. The gait analysis walkway further includes a U-shaped second positioning pin, and the second positioning pin is movably inserted into the second limiting tubes on both sides; 10. The animal gait analysis device according to claim 1, characterized in that: The outer side walls of the front door panel and the rear door panel are each provided with two "L"-shaped insert strips, and the two "L"-shaped insert strips are arranged opposite to each other to form the pull-out groove; The drawer door panel is of an "L"-shaped structure, with one side of the drawer door panel being located outside the drawer slot, making it convenient to extract and insert the drawer door panel.

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