Three-dimensional gait analyzer

Abstract

The utility model relates to a three-dimensional gait analyzer, and relates to the field of medical instruments, the three-dimensional gait analyzer comprises a force measuring table, the two sides of the force measuring table are respectively provided with a sliding support in a sliding mode, the top of each sliding support is fixedly connected with a connecting piece, the connecting pieces are arranged parallel to the ground, and the connecting pieces linearly extend in the walking direction of a tested person; the ends, away from the sliding supports, of the connecting pieces are fixedly connected with handheld grips. A receding opening used for exposing the lower half portion of the tested person is formed between the connecting piece and the sliding support. Locking structures used for locking or releasing the sliding support are installed on the two sides of the force measuring table respectively. According to the invention, the situation that the tested person falls down due to imbalance in the three-dimensional gait analysis test process on the force test table can be reduced.

Description

Technical Field

[0001] This application relates to the field of medical devices, and particularly to a three-dimensional gait analyzer. Background Art

[0002] Three-dimensional gait analysis method is a reliable quantitative evaluation method recognized internationally at present, also known as quantitative gait analysis. According to the principle of biomechanics, it applies devices such as infrared cameras, force platforms, and surface electromyography, and through computer background assistance, records the joint movements at specific phases during human walking, especially the lower limb joints, including the movement changes of the hip joint, knee joint, and ankle joint.

[0003] In the prior art, common three-dimensional gait analyzers mainly include a force platform, wearable surface electromyography test electrodes, a surface electromyograph, multiple reflective marker points, and multiple far-infrared light point cameras. Among them, the force platform is fixedly installed on the ground in the test room, and multiple far-infrared light point cameras are installed around the force platform. Moreover, multiple far-infrared light point cameras are respectively connected to an auxiliary computer through a wireless network module, and the wearable surface electromyography test electrodes are connected to a surface electromyography tester through a wireless network module. During the test, the tested person wears the wearable surface electromyography test device on the limb surface, attaches multiple reflective marker points to the body surface of the tested person, receives the infrared rays reflected by the reflective marker points through the far-infrared light point cameras, performs three-dimensional reconstruction according to the corresponding model analysis method, obtains the three-dimensional movement trajectories of various parts of the human body, and displays them through the auxiliary computer.

[0004] However, in the existing three-dimensional gait analyzers, when the tested person walks on the force platform for three-dimensional gait testing, in order to avoid the reflective marker points on the body surface of the tested person being blocked, there cannot be accompanying or supporting personnel during the process of the tested person walking on the force platform. For the population in the process of rehabilitation, the step of walking alone on the force platform is of relatively high difficulty, and the tested person is prone to lose balance and fall during the test. Moreover, installing handrails on both sides of the force platform is likely to block the reflective marker points attached to the lower limb body surface of the tested person, so there is room for improvement. Utility Model Content

[0005] In order to reduce the occurrence of the situation where the tested person falls due to losing balance during the three-dimensional gait analysis test on the force platform, this application provides a three-dimensional gait analyzer.

[0006] The three-dimensional gait analyzer provided by this application adopts the following technical solutions:

[0007] A three-dimensional gait analyzer, comprising a force platform, wherein sliding brackets are respectively and slidably installed on both sides of the force platform, a connecting member is fixedly connected to the top of the sliding bracket, the connecting member is arranged parallel to the ground, the connecting member extends linearly along the walking direction of the person to be measured, and handgrips are fixedly connected to one ends of the connecting member away from the sliding brackets;

[0008] An avoidance opening for exposing the lower half of the body of the person to be measured is formed between the connecting member and the sliding bracket;

[0009] Locking structures for locking or releasing the sliding brackets are respectively installed on both sides of the force platform.

[0010] By adopting the above technical solution, during the actual three-dimensional gait analysis process, when the person to be measured steps onto the force platform, they can hold the handgrips with both hands and control the locking structure to release the sliding brackets. During the walking process of the person to be measured, the connecting member and the sliding brackets can be simultaneously pushed to slide. Since the connecting member extends linearly along the walking direction of the person to be measured, the connecting member and the sliding brackets can be arranged in an approximately inverted L shape, which can reduce the situation that the reflective marking points installed on the lower limbs of the person to be measured are blocked. When the person to be measured is unbalanced and skews during the walking process, the person to be measured can lock the sliding brackets through the locking structure. At this time, the sliding brackets are fixed, which can form a support for the person to be measured and reduce the situation that the person to be measured falls due to body imbalance.

[0011] Preferably, the sliding bracket includes a sliding seat and a sliding rod. Installation boxes are respectively and fixedly connected to both sides of the force platform. An installation cavity is arranged in the installation box. Lead screws are respectively and rotatably installed in the installation boxes. The sliding seat is installed on the lead screw, and the sliding seat is slidably installed in the installation cavity. The sliding rod is fixedly installed on the top of the sliding seat, and a guide groove for the sliding rod to extend out is formed through the top of the installation box.

[0012] By adopting the above technical solution, through the mutual cooperation and use of the sliding seat and the lead screw, when the person to be measured walks on the force platform for gait analysis testing, the locking structure releases the lead screw. During the process of the person to be measured pushing the connecting member, the lead screw rotates, which can make the sliding seat slide along the axial direction of the lead screw, and the sliding rod and the connecting member can move along with the person to be measured; when the person to be measured is unbalanced and the body is tilted, the person to be measured locks the lead screw through the locking structure. The non-rotation of the lead screw can fix the position of the sliding seat, and further realize the fixation of the positions of the connecting member and the sliding rod, forming a support for the person to be measured and preventing the person to be measured from falling.

[0013] Preferably, rollers are respectively and rotatably installed on both sides of the sliding seat, and sliding grooves are respectively formed on the inner side walls of the installation boxes. The two rollers are respectively embedded in the two sliding grooves;

[0014] On opposite inner groove walls of the sliding groove, anti - detachment parts are fixedly installed respectively, and the anti - detachment parts are limited to the side of the roller close to the sliding seat.

[0015] By adopting the above - mentioned technical solution, during the sliding process of the sliding seat, the rollers on both sides of the sliding seat roll in the sliding groove, which can convert the sliding friction between both sides of the sliding seat and the inner wall of the installation cavity into rolling friction, improving the smoothness of the sliding of the sliding seat; and because the rollers are restricted by the sliding groove and the anti - detachment parts, the situation of the sliding seat shifting in position during the sliding process can be reduced, improving the stability of the sliding of the sliding seat.

[0016] Preferably, a limiting part is integrally formed at the bottom of the sliding seat, and a limiting groove adapted to the limiting part is formed on the inner wall of the bottom of the installation box body.

[0017] By adopting the above - mentioned technical solution, the cooperation and use of the limiting part and the limiting groove can further limit the position of the sliding seat, reducing the situation of the sliding seat shaking during the sliding process, and further improving the stability of the sliding action of the sliding seat.

[0018] Preferably, both sides of the limiting part and the limiting groove are arranged in an outward - expanding shape along the direction close to the ground.

[0019] By adopting the above - mentioned technical solution, the outward - expanding setting of the limiting part and the limiting groove can reduce the situation that the limiting part disengages from the limiting groove during the sliding process of the sliding seat.

[0020] Preferably, an installation shaft is fixedly connected to the end of the lead screw, a partition plate is fixedly connected in the installation box body, and a locking gear is fixedly installed at the end of the installation shaft passing through the partition plate;

[0021] The locking structure includes an electromagnetic lock fixedly installed on the inner wall of the installation box body, and lock rods are respectively fixedly connected to the driving ends of the electromagnetic lock;

[0022] Control buttons for controlling the electromagnetic lock are respectively fixedly installed on the top of the handheld grip.

[0023] By adopting the above - mentioned technical solution, the tested person can control the electromagnetic lock to extend or retract the lock rod by pressing the control button. When the electromagnetic lock extends the lock rod so that the lock rod is limited between the teeth of the locking gear, the locking gear and the lead screw can be locked, making the sliding seat unable to slide on the lead screw; when the electromagnetic lock retracts the lock rod so that the lock rod slides out from between the teeth of the locking gear, the sliding seat can be pushed to slide on the lead screw through the connecting piece and the sliding rod.

[0024] Preferably, a protective part is fixedly installed on the top of the installation box body, and the protective part is arranged along the edge of the guide groove.

[0025] By adopting the above technical solution, the protective part forms an extension of the inner wall of the guide groove, which can provide a good protection effect for the sliding rod and reduce the occurrence of the sliding rod tilting under force during the sliding process.

[0026] In summary, a three-dimensional gait analyzer of the present application includes at least one of the following beneficial technical effects:

[0027] 1. During the actual three-dimensional gait analysis process, the person to be measured steps on the force measuring platform, can hold the hand-held grip with both hands, and control the locking structure to release the sliding bracket. During the walking process of the person to be measured, the connecting piece and the sliding bracket can be pushed to slide together. Since the connecting piece extends linearly along the walking direction of the person to be measured, the connecting piece and the sliding bracket can be arranged in an approximately inverted L shape, which can reduce the occurrence of the reflective marker points installed on the lower limb surface of the person to be measured being blocked; when the person to be measured tilts due to imbalance during the walking process, the person to be measured can lock the sliding bracket through the locking structure. At this time, the sliding bracket is fixed, which can support the person to be measured and reduce the occurrence of the person to be measured falling due to body imbalance.

[0028] 2. During the sliding process of the sliding seat, the rollers on both sides of the sliding seat roll in the chute, which can convert the sliding friction between both sides of the sliding seat and the inner wall of the installation cavity into rolling friction, improving the smoothness of the sliding of the sliding seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram showing the overall structure of the force measuring platform in an embodiment of the present application.

[0030] Figure 2 is a schematic diagram showing the main structure inside the installation box body in an embodiment of the present application.

[0031] Figure 3 is a schematic diagram showing the positional relationship between the locking gear and the electromagnetic lock in an embodiment of the present application.

[0032] Description of the reference numerals: 1, force measuring platform; 11, installation box body; 12, lead screw; 13, guide groove; 14, chute; 15, anti-disengagement part; 16, limiting groove; 17, locking gear; 18, protective part; 2, sliding bracket; 21, sliding seat; 22, sliding rod; 23, roller; 24, limiting part; 3, connecting piece; 4, hand-held grip; 5, avoidance opening; 6, locking structure; 61, electromagnetic lock; 62, lock rod; 63, control button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will Figures 1-3 further describe the present application in detail.

[0034] Embodiment

[0035] An embodiment of the present application discloses a three-dimensional gait analyzer. Refer toFigure 1 , including a force measuring platform 1, sliding brackets 2 are slidably installed on both sides of the force measuring platform 1, a connecting member 3 is fixedly connected to the top of the sliding bracket 2, the connecting member 3 is arranged parallel to the ground, the connecting member 3 extends linearly along the direction of the tested person's walking, and handgrips 4 are fixedly connected to the ends of the connecting member 3 far away from the sliding brackets 2; an avoidance opening 5 for exposing the lower half of the tested person's body is formed between the connecting member 3 and the sliding bracket 2; locking structures 6 for locking or releasing the sliding brackets 2 are respectively installed on both sides of the force measuring platform 1.

[0036] During the actual three-dimensional gait analysis process, the tested person steps onto the force measuring platform 1, can hold the handgrips 4 with both hands, and control the locking structure 6 to release the sliding brackets 2. During the walking process of the tested person, the connecting member 3 and the sliding brackets 2 can be simultaneously pushed to slide. Since the connecting member 3 extends linearly along the direction of the tested person's walking, the connecting member 3 and the sliding brackets 2 can be arranged in an approximately inverted L shape, which can reduce the situation that the reflective marking points installed on the lower limbs of the tested person are blocked.

[0037] When the tested person is unbalanced and skews during the walking process, the tested person can lock the sliding brackets 2 through the locking structure 6. At this time, the sliding brackets 2 are fixed, which can support the tested person and reduce the situation that the tested person falls due to body imbalance.

[0038] Refer to Figure 1 and Figure 2 , the sliding bracket 2 includes a sliding seat 21 and a sliding rod 22. Installation boxes 11 are respectively fixedly connected to both sides of the force measuring platform 1. An installation cavity is arranged in the installation box 11. Lead screws 12 are respectively rotatably installed in the installation boxes 11. The sliding seat 21 is installed on the lead screw 12, and the sliding seat 21 is slidably installed in the installation cavity. The sliding rod 22 is fixedly installed on the top of the sliding rod 22. A guide groove 13 for the sliding rod 22 to extend out is formed through the top of the installation box 11.

[0039] Through the mutual cooperation and use of the sliding seat 21 and the lead screw 12, when the tested person walks on the force measuring platform 1 for gait analysis testing, the locking structure 6 releases the lead screw 12. When the tested person pushes the connecting member 3, the lead screw 12 rotates, which can make the sliding seat 21 slide along the axial direction of the lead screw 12, so that the sliding rod 22 and the connecting member 3 move along with the tested person; when the tested person is unbalanced and the body is tilted, the tested person locks the lead screw 12 through the locking structure 6. The non-rotation of the lead screw 12 can fix the position of the sliding seat 21, and then realize the fixation of the positions of the connecting member 3 and the sliding rod 22, forming a support for the tested person and preventing the tested person from falling.

[0040] Refer to Figure 1 and Figure 3, an installation shaft is fixedly connected to the end of the lead screw 12, a partition is fixedly connected inside the installation box body 11, and a locking gear 17 is fixedly installed at the end of the installation shaft passing through the partition; the locking structure 6 includes an electromagnetic lock 61 fixedly installed on the inner wall of the installation box body 11, and locking rods 62 are fixedly connected to the driving ends of the electromagnetic lock 61 respectively; control buttons 63 for controlling the electromagnetic lock 61 are fixedly installed at the top of the hand-held grip 4 respectively.

[0041] The person to be measured can control the electromagnetic lock 61 to extend or retract the locking rod 62 by pressing the control button 63. When the electromagnetic lock 61 extends the locking rod 62 so that the locking rod 62 is limited between the teeth of the locking gear 17, the locking gear 17 and the lead screw 12 can be locked, so that the sliding seat 21 cannot slide on the lead screw 12; when the electromagnetic lock 61 retracts the locking rod 62 so that the locking rod 62 slides out from between the teeth of the locking gear 17, the sliding seat 21 can be pushed to slide on the lead screw 12 through the connecting piece 3 and the sliding rod 22.

[0042] Refer to Figure 2 , rollers 23 are respectively rotatably installed on both sides of the sliding seat 21, sliding grooves 14 are respectively formed on the inner side wall of the installation box body 11, and the two rollers 23 are respectively embedded in the two sliding grooves 14; anti-disengagement parts 15 are respectively fixedly installed on the two opposite inner groove walls of the sliding groove 14, and the anti-disengagement parts 15 are limited on the side of the roller 23 close to the sliding seat 21.

[0043] During the sliding process of the sliding seat 21, the rollers 23 on both sides of the sliding seat 21 roll in the sliding grooves 14, and the sliding friction between both sides of the sliding seat 21 and the inner wall of the installation cavity can be converted into rolling friction, improving the smoothness of the sliding of the sliding seat 21; and because the rollers 23 are restricted by the sliding grooves 14 and the anti-disengagement parts 15, the situation of the position deviation of the sliding seat 21 during the sliding process can be reduced, improving the stability of the sliding of the sliding seat 21.

[0044] Refer to Figure 2 , a limiting part 24 is integrally formed at the bottom of the sliding seat 21, and a limiting groove 16 adapted to the limiting part 24 is formed on the bottom inner wall of the installation box body 11.

[0045] The limiting part 24 and the limiting groove 16 are used in cooperation with each other, which can further limit the position of the sliding seat 21 and reduce the situation of the sliding seat 21 shaking during the sliding process, and can further improve the stability of the sliding action of the sliding seat 21.

[0046] Refer to Figure 2 , in the embodiment of the present application, both sides of the limiting part 24 and the limiting groove 16 are arranged in an outwardly expanding shape along the direction close to the ground, and the limiting part 24 and the limiting groove 16 are both approximately trapezoidal. The outwardly expanding shape of the limiting part 24 and the limiting groove 16 can reduce the situation of the limiting part 24 disengaging from the limiting groove 16 during the sliding process of the sliding seat 21.

[0047] Refer to Figure 1 , a protection part 18 is fixedly installed on the top of the installation box body 11, and the protection part 18 is arranged along the edge of the guide groove 13. The protection part 18 forms an extension of the inner wall of the guide groove 13, which can form a good protection effect on the sliding rod 22 and reduce the occurrence of the situation that the sliding rod 22 is inclined due to force during the sliding process.

[0048] The implementation principle of a three-dimensional gait analyzer according to an embodiment of the present application is as follows: during the actual three-dimensional gait analysis process, the person to be measured steps on the force measuring platform 1, can hold the hand-held grip 4 with both hands, and control the locking structure 6 to release the sliding bracket 2. During the walking process of the person to be measured, the connecting member 3 and the sliding bracket 2 can be pushed to slide together at the same time. Since the connecting member 3 extends linearly along the walking direction of the person to be measured, the connecting member 3 and the sliding bracket 2 can be arranged in an approximately inverted L shape, which can reduce the occurrence of the situation that the reflective marking points installed on the lower limb surface of the person to be measured are blocked; when the person to be measured is unbalanced and skewed during the walking process, the person to be measured can lock the sliding bracket 2 through the locking structure 6. At this time, the sliding bracket 2 is fixed, which can support the person to be measured and reduce the occurrence of the situation that the person to be measured falls due to body imbalance.

[0049] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A three-dimensional gait analyzer, characterized in that: The force measuring platform (1) comprises a sliding bracket (2) slidably mounted on both sides of the force measuring platform (1), a connecting piece (3) is fixedly connected to the top of the sliding bracket (2), the connecting piece (3) is arranged parallel to the ground, the connecting piece (3) extends straight along the walking direction of the person being measured, and one end of the connecting piece (3) away from the sliding bracket (2) is fixedly connected to a handheld handle (4); An escape opening (5) for exposing the lower half of the body of the person being tested is formed between the connecting member (3) and the sliding bracket (2); Locking structures (6) for locking or releasing the sliding bracket (2) are respectively installed on both sides of the force measuring platform (1).

2. A three-dimensional gait analyzer according to claim 1, characterized in that: The sliding bracket (2) comprises a sliding seat (21) and a sliding rod (22). The two sides of the force measuring platform (1) are respectively fixedly connected with a mounting box (11). A mounting cavity is arranged in the mounting box (11). A screw rod (12) is rotatably mounted in the mounting box (11). The sliding seat (21) is mounted on the screw rod (12), and the sliding seat (21) is slidably mounted in the mounting cavity. The sliding rod (22) is fixedly mounted on the top of the sliding rod (22). A guide groove (13) for the sliding rod (22) to extend is opened through the top of the mounting box (11).

3. A three-dimensional gait analyzer according to claim 2, characterized in that: Rollers (23) are rotatably mounted on both sides of the sliding seat (21), and slide grooves (14) are formed on the inner side walls of the installation box (11), and the two rollers (23) are respectively embedded and mounted in the two slide grooves (14); Anti-slipping parts (15) are respectively fixedly mounted on two opposite inner groove walls of the sliding groove (14), and the anti-slipping parts (15) are located at a side of the roller (23) close to the sliding seat (21).

4. A three-dimensional gait analyzer according to claim 3, characterized in that: The bottom of the sliding seat (21) is integrally formed with a limiting portion (24), and the bottom inner wall of the installation box (11) is provided with a limiting groove (16) adapted to the limiting portion (24).

5. A three-dimensional gait analyzer according to claim 4, characterized in that: Both sides of the limiting portion (24) and the limiting groove (16) are arranged in an outwardly expanding shape in a direction close to the ground.

6. A three-dimensional gait analyzer according to claim 2, characterized in that: The end of the screw rod (12) is fixedly connected to a mounting shaft, a partition is fixedly connected inside the mounting box (11), and a locking gear (17) is fixedly mounted on the end of the mounting shaft that passes through the partition; The locking structure (6) comprises an electromagnetic lock (61) fixedly mounted on the inner wall of the mounting box (11), and the driving ends of the electromagnetic lock (61) are respectively fixedly connected to locking rods (62); Control buttons (63) for controlling the electromagnetic lock (61) are fixedly mounted on the top of the handheld handle (4).

7. A three-dimensional gait analyzer according to claim 2, characterized in that: A protection portion (18) is fixedly mounted on the top of the installation box (11), and the protection portion (18) is arranged along the edge of the guide groove (13).

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