Portable gait analysis device based on small animals

Abstract

The utility model relates to a portable gait analysis device based on a small animal, which comprises a slide rail frame, a slide rail, a slide rail, a slide rail, a slide rail, a slide rail, a slide rail, a slide rail and a slide rail, the plurality of force measuring tables are used for measuring the dynamic three-dimensional force data of the foot sole of the animal; the flexible pressure sensor is packaged on the force measuring table, and the flexible pressure sensor is used for measuring a pressure image of the whole walking gait process of the four limbs of the experimental animal; a plurality of force measuring tables are detachably installed on the sliding rail frame according to requirements. The animal movement posture can be obtained, the blank of lack of animal gait, behavior ability research and disease state evaluation and diagnosis instruments at present is effectively filled up, and the defects of complex examination conditions, difficulty in capturing movement tracks, complex analysis process and the like during animal overall condition examination are overcome.

Description

Technical Field

[0001] The utility model relates to the field of animal behavior research, in particular to the field of motor function and medical rehabilitation, and specifically is a portable gait analysis device based on small-sized animals. Background Art

[0002] Gait analysis is a systematic study of animal limb movement, that is, it refers to a periodic form and pattern of human or animal limb movement and advancement (such as walking, running, footsteps, etc.). It can analyze and diagnose abnormal movement behaviors and is an examination method for studying walking patterns. It aims to reveal the key links and influencing factors of gait abnormalities through biomechanical and kinematic means, thereby guiding rehabilitation assessment and treatment.

[0003] Traditional gait detection methods include: balance beam walking test, Bederson scoring method, footprint analysis, treadmill test, cylinder test, ladder walking test, etc. These methods are highly subjective, the evaluation results are inaccurate, and it is impossible to obtain indicators related to the overall animal and time. Animal gait meter is a gait detection method developed in recent years based on computer vision technology. It can simultaneously detect static, dynamic and limb coordination parameters during the spontaneous movement of animals, and can objectively analyze the time changes of animal gait. At present, most of the research objects of animal gait remain in rodents. The gait images and plantar pressure data of animal models such as rats are used to study diseases and develop drugs, providing a good way to evaluate the effects of drugs, treatment plans, and rehabilitation training. The overall condition examination of small animals such as cats and dogs still remains at the stage of doctors observing or palpating animals. The overall condition examination refers to the examination of the comprehensive performance of the appearance and behavior of animals, including: animal physical development, nutritional status, mental state, posture, changes and abnormal performance of movement and behavior. Posture refers to the spatial position and posture of an animal when it is relatively still or in motion. Healthy animals have their own unique postures and behaviors, which are natural, flexible and coordinated. Under pathological conditions, animals have some abnormal postures when standing and lying down. Exercise is mostly used to observe whether the direction and coordination of animal movement are disordered. There is still a lack of instruments for evaluating and diagnosing the behavioral ability and disease status of animals such as cats and dogs. Utility Model Content

[0004] The utility model is to solve the shortcomings of the existing technology and provide a portable gait analysis device based on small animals. It can obtain the animal's movement posture, effectively fill the gap in the current lack of animal gait, behavioral ability research, disease status assessment and diagnosis instruments, and solve the shortcomings of complex inspection conditions, difficult to capture movement trajectories, and complex analysis processes when checking the overall condition of animals.

[0005] The utility model solves the technical problem with the following technical solutions:

[0006] A portable gait analysis device based on small animals, the device comprising:

[0007] A slide rail frame, wherein the slide rail frame is installed and spliced ​​with a custom walking path;

[0008] A number of force platforms, wherein the force platforms are used to measure dynamic three-dimensional force data of the plantar surface of an animal;

[0009] A flexible pressure sensor is encapsulated on the force measuring platform, and the flexible pressure sensor is used to measure the pressure image of the whole process of the experimental animal's limbs walking gait;

[0010] A number of force plates are movably mounted on the slide rail frame as required.

[0011] Furthermore, the size of the flexible pressure sensor is consistent with the size of the top cover of the force measuring platform, and the flexible pressure sensors are arranged in an array.

[0012] Furthermore, the force measuring platform includes a top cover plate, a force sensor, an intermediate connecting piece, and a supporting base. The plane size of the top cover plate is 300*500~400*600mm. The supporting base is installed at the four corners of the lower part of the top cover plate. The supporting base, the force sensor and the top cover plate are fixed together by the intermediate connecting piece. The force sensor is located inside the supporting base.

[0013] Furthermore, the slide rail frame is formed by welding pipes with a diameter of 50-80 mm, which are spliced ​​along two inner and outer paths. The welded pipes include straight pipes and right-angle bent pipes. The two adjacent pipes are connected into one by plug-in or mortise and tenon, and bolt fixing. The inner and outer paths form a track supporting the force platform; a number of slide rail guide blocks are arranged on the track, and each force platform requires four slide rail guide blocks to be fixed to the slide rail frame; the bottom of the slide rail guide block cooperates with the slide rail frame and can slide on the slide rail frame; the upper part of the slide rail guide block is provided with a base groove which can be embedded in the support base.

[0014] Furthermore, the length of the straight tube is not less than the length of the top cover plate; a number of force measuring platforms are assembled continuously or at intervals on the slide rail frame.

[0015] Furthermore, the flexible pressure sensor is encapsulated in a panel, and the panel is fixed on the top cover of the force measuring platform. The panel includes a flexible pressure sensor, a rebound sponge layer, a PVC board, and a linen layer from bottom to top. The panel and the top cover are fixedly connected by bolts and nuts.

[0016] Furthermore, the thickness of the PVC board is 1.5-2.5 mm, the thickness of the rebound sponge is 1.2-2.0 mm, and the thickness of the flexible sensor is 2-3 mm.

[0017] Furthermore, the force measuring platform is a portable force measuring platform, and weighs 10-15 kg.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model is a portable gait analysis device for small animals, which is assembled from a flexible pressure sensor, a force platform, and a slide rail frame. The gait analysis device can be spliced ​​and debugged according to needs.

[0020] 2. The flexible pressure sensor in the utility model can detect the pressure image of the whole process of walking or gait of the experimental animals' limbs, and the force platform can collect the force information of the limbs of the experimental animals in the whole process of movement behavior. After data processing and analysis, multi-dimensional gait analysis of experimental animals is realized, thereby improving the objectivity of the movement analysis of experimental animals, and providing a data analysis template and parameter indicator system for application research based on animal gait tactile information.

[0021] 3. Additional aspects and advantages of the present invention will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the portable gait analysis device for small animals of the utility model;

[0023] FIG2(a) is a schematic diagram of the structure of a portable gait analysis device for small animals according to the present invention, which is only connected to a force platform.

[0024] FIG2( b ) is a schematic structural diagram of the AA section in FIG2( a );

[0025] Figure 3 This is a schematic diagram of the main structure of a portable gait analysis device for small animals according to an embodiment of the utility model;

[0026] Figure 4 It is a rear structural schematic diagram of a portable gait analysis device for small animals according to an embodiment of the utility model;

[0027] Figure 5 This is an exploded diagram of the panel package of a portable gait analysis device for small animals according to an embodiment of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the slide rail guide block of the portable gait analysis device for small animals according to an embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram of the cooperation between the guide block of the slide rail and the slide rail frame of the portable gait analysis device for small animals according to an embodiment of the utility model;

[0030] Figure 8 It is a schematic cross-sectional structure diagram of a force measuring platform and a slide rail frame in one embodiment of the utility model;

[0031] In the figure: 1 slide rail frame, 2 force platform, 3 panel, 4 slide rail guide block, 21 top cover plate, 22 force sensor, 23 support base, 24 lead interface, 25 intermediate connector, 31 flexible pressure sensor, 32 rebound sponge, 33 PVC board, 34 linen layer, 41 base groove, 42 slide rail groove. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below in conjunction with the accompanying drawings and through specific implementation methods, but this does not limit the protection scope of the claims of the present invention.

[0033] The utility model is a portable gait analysis device based on small animals (see Figure 1 ),include:

[0034] Slide rail frame 1, the slide rail frame is installed and spliced ​​with a custom walking path;

[0035] A number of force platforms 2, wherein the force platforms are used to measure dynamic three-dimensional force data of the plantar of an animal;

[0036] A flexible pressure sensor 31 is encapsulated on the force measuring platform, and the flexible pressure sensor is used to measure the pressure image of the whole process of the experimental animal's limbs walking gait;

[0037] A number of force measuring platforms can be detachably mounted on the slide rail frame as required.

[0038] The working principle of the utility model is as follows: when using the portable gait analysis device based on small-sized animals, the force platform is taken out, and after the force platform and the flexible pressure sensor are packaged, the slide rail frame is built according to the desired movement route, and a corresponding number of force platforms are placed, and the signal lines and power lines are correctly connected. The force platform can work after the power is turned on; the force platform and the flexible pressure sensor are electrically connected to a computer, and the test can be started by setting parameters such as synchronous input / output through the computer. It is more convenient to use and meets the requirements of portable gait analysis of small-sized animals.

[0039] The tested experimental animal walks or moves on the device, the flexible pressure sensor on the force platform obtains the gait contact image of the tested experimental animal, and the force sensor of the force platform obtains the mechanical information of the tested experimental animal. Through data analysis, three moments (Mx, My, Mz), the coordinates of the center of force COP, pure torque Tz, movement speed, acceleration, vertical jump height, power and other dynamic and static indicators can be obtained. The specific calculation method can be achieved according to the existing technology.

[0040] The utility model can obtain multiple gait parameters of animals, including step length, step frequency, step sequence, limb distance, pressure, center of gravity offset, etc., and provide data analysis templates and parameter indicator systems for small animal medical clinical diagnosis, efficacy evaluation, mechanism research, motion measurement and medical rehabilitation, etc., and has extremely wide application value.

[0041] In the utility model, the flexible pressure sensor has the characteristics of large-area preparation, high sensitivity, and a large range. The size of the flexible pressure sensor is designed and packaged according to the size of the force platform. The flexible pressure sensor is a capacitive flexible pressure sensor, which is a sensor array composed of multiple pressure-sensitive sensors arranged in an array.

[0042] In the utility model, the force measuring platform comprises a top cover plate, and the size of the plane of the top cover plate is 300*500-400*600mm.

[0043] In the utility model, the slide rail frame is respectively formed by splicing straight tubes and right-angle bent tubes together, and the required tracks can be spliced ​​as needed. The slide rail guide block is nested on the slide rail frame to fix the above-mentioned force measuring platform.

[0044] Example 1

[0045] The present embodiment is a portable gait analysis device for small animals, comprising a slide rail frame with two inner and outer paths formed by splicing straight tubes and right-angle bent tubes, the inner and outer paths forming a track supporting a force platform; a number of slide rail guide blocks 4 are arranged on the track, and each force platform requires four slide rail guide blocks to be fixed to the slide rail frame; the bottom of the slide rail guide block cooperates with the slide rail frame and can slide on the slide rail frame; the upper part of the slide rail guide block 4 is provided with a base groove 41 that can be embedded in the support base, and the lower part is provided with a slide rail groove 42 that can cooperate with the slide rail frame.

[0046] The force measuring platform includes a top cover plate 21, a force sensor 22, an intermediate connector 25, a support base 23, and a lead interface 24. Countersunk screw holes are provided at the four corners of the top cover plate. Countersunk screws are passed through the corresponding countersunk screw holes to fix the panel and the top cover plate 21 together. The force measuring platform is made of a metal frame as a whole. The lead interface 24 is used to connect the detection signals of the force sensor and the flexible pressure sensor 31 to the outside world.

[0047] A flexible pressure sensor 31 is encapsulated in the panel 3, and the panel includes the flexible pressure sensor 31, a rebound sponge layer 32, a PVC board 33, and a linen layer 34 from bottom to top, which can prevent the flexible pressure sensor from being damaged and avoid delamination.

[0048] The force sensor 22 is used to obtain mechanical information of the tested experimental animal and display three-dimensional force. The mechanical information can be used to observe whether the animal is standing firmly.

[0049] In this embodiment, the size of the force platform is 300*500mm, the straight tube length is 500mm, and it can withstand a force of 3KN. All force platforms are laid on the slide rail frame in a continuous laying manner. Figure 1 shown.

[0050] The intermediate connector 25 is in the form of bolts and nuts, and the force sensor, the support base and the force platform are fixed together by the intermediate connector. A gasket can be added to the intermediate connector to achieve the purpose of leveling the force platform.

[0051] The force platform of this embodiment weighs only 12.5 kg and is a portable force platform. The force platform is fixed on the slide rail frame, and multiple force platforms can be placed as required to analyze the movement posture data of experimental animals in different routes.

[0052] Example 2

[0053] In this embodiment, the panel 3, the top cover 21, the force sensor 22, and the support base 23 are connected into a whole by an intermediate connector 25. A countersunk screw hole is provided on the panel, and the upper part of the intermediate connector passes through the countersunk screw hole and is fixed by a nut. Figure 8 shown.

[0054] The above describes in detail the preferred specific embodiments of the utility model. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

[0055] Anything not described in the present invention is applicable to the prior art.

Claims

1. A portable gait analysis device for small animals, characterized in that: The device includes: A slide rail frame, wherein the slide rail frame is installed and spliced ​​with a custom walking path; A number of force platforms, wherein the force platforms are used to measure dynamic three-dimensional force data of the plantar surface of an animal; A flexible pressure sensor is encapsulated on the force measuring platform, and the flexible pressure sensor is used to measure the pressure image of the whole process of the experimental animal's limbs walking gait; A number of force measuring platforms can be detachably mounted on the slide rail frame as required.

2. The portable gait analysis device for small animals according to claim 1, characterized in that: The size of the flexible pressure sensor is consistent with the size of the top cover plate of the force measuring platform, and the flexible pressure sensors are arranged in an array.

3. The portable gait analysis device for small animals according to claim 1, characterized in that: The force measuring platform includes a top cover, a force sensor, an intermediate connecting piece, and a supporting base. The plane size of the top cover is 300*500~400*600mm. The supporting base is installed at the four corners of the lower part of the top cover. The supporting base, the force sensor and the top cover are fixed together by the intermediate connecting piece. The force sensor is located inside the supporting base.

4. The portable gait analysis device for small animals according to claim 1, characterized in that: The slide rail frame is formed by welding pipes with a diameter of 50-80 mm, which are spliced ​​along two inner and outer paths. The welded pipes include straight pipes and right-angle bent pipes. The adjacent pipes are connected into one by plug-in or mortise and tenon, and bolt fixing. The inner and outer paths form a track supporting the force measuring platform. A number of slide rail guide blocks are arranged on the track. Each force measuring platform requires four slide rail guide blocks to be fixed to the slide rail frame. The bottom of the slide rail guide block cooperates with the slide rail frame and can slide on the slide rail frame. The upper part of the slide rail guide block is provided with a base groove which can be embedded in the support base.

5. The portable gait analysis device for small animals according to claim 4, characterized in that: The length of the straight tube is not less than the length of the top cover plate; a number of force measuring platforms are assembled continuously or at intervals on the slide rail frame.

6. The portable gait analysis device for small animals according to claim 1, characterized in that: The flexible pressure sensor is encapsulated in a panel, and the panel is fixed on the top cover of the force measuring platform. The panel includes a flexible pressure sensor, a rebound sponge layer, a PVC board, and a linen layer from bottom to top. The panel and the top cover are fixedly connected by bolts and nuts.

7. The portable gait analysis device for small animals according to claim 6, characterized in that: The thickness of the PVC board is 1.5-2.5 mm, the thickness of the rebound sponge is 1.2-2.0 mm, and the thickness of the flexible sensor is 2-3 mm.

8. The portable gait analysis device for small animals according to any one of claims 1 to 7, characterized in that: The force measuring platform is a portable force measuring platform and weighs 10-15 kg.

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