JP2019055035A - Lower limb orthotic for walking training - Google Patents

Abstract

To provide a lower limb orthotic for walking training capable of suppressing deterioration in efficiency of walking training attributed to the orthotic mounted on an affected leg coming into contact with a healthy leg in the lower limb orthotic for walking training.SOLUTION: A lower limb orthotic 1 for walking training includes a first orthotic 2 mounted on the leg to the foot in one lower limb of a walking trainee, and a second orthotic 3 mounted at least on the foot in the other lower limb of the walking trainee. The second orthotic 3 includes a protection plate 50 for covering the rear part of the foot and the rear lower part of the thigh in the other lower limb. The protection plate 50 includes a plate 52 for the foot for covering the rear part of the foot in the other lower limb, and a plate 51 for the thigh for covering the rear lower part of the thigh in the other lower limb, the plate 51 for the thigh being rotatable with respect to the plate 52 for the foot.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lower limb orthosis for walking training.

  For training trainees, especially trainees suffering from hemiplegia, there are known leg braces for walking training that are attached to the lower limbs (affected legs) of the trainee's hemiplegic side and rehabilitate the affected leg. . In Patent Document 1, a thigh link that is worn along the thigh of a trainee, a lower leg link that is swingably connected to the thigh link and that is worn along the lower thigh, and a foot that is attached to the foot. A leg training device for gait training is provided.

JP 2017-108991 A

  The lower limb orthosis for walking training intended for trainees suffering from hemiplegia is mounted on the affected leg only as in Patent Document 1, and the lower limb (healthy leg) on the side different from the affected leg. A configuration in which no brace is attached is common. In such a configuration, if the orthosis worn on the affected leg in the lower limb orthosis for walking training comes into contact with the healthy leg during walking training, the smooth movement of the ankle joint in the healthy leg is restricted, and the efficiency of the walking training is reduced. May decrease.

  The present invention has been made in view of the above background, and walking that can suppress a decrease in the efficiency of walking training caused by the orthosis worn on the affected leg in the lower limb orthosis for walking training coming into contact with the healthy leg. The purpose is to provide a lower limb orthosis for training.

  The present invention relates to a lower limb orthosis for walking training, the first orthosis worn from the leg to the foot on one of the lower limbs of the gait trainer, and the first attached to at least the foot on the other lower limb of the gait trainer. And the second brace has a protective plate covering a rear part of the foot and a rear lower part of the lower leg in the other lower limb, and the protective plate is a foot in the other lower limb. A leg plate covering the rear part of the lower leg and a lower leg plate covering the rear lower part of the lower leg of the other leg, the leg plate being rotatable with respect to the foot plate It is configured.

  In the other leg of the gait trainer, by wearing a second brace having a protective plate covering the rear part of the foot and the rear lower part of the lower leg, the first brace is placed on the other leg of the trainer during training. The lower limbs of the trainee can be protected from the impact of collision. In addition, since the lower leg plate is configured to be rotatable with respect to the foot plate, the lower leg plate is designed to follow the movement of the ankle joint of the trainee during training. Rotate with respect to the plate. Therefore, the smooth movement of the trainee's ankle joint is not hindered during training. Thereby, the fall of the efficiency of the gait training resulting from the brace | limb mounted on the affected leg in the lower limb orthosis for walking training contacting a healthy leg can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the fall of the efficiency of the walk training resulting from the brace | limb mounted | worn with the leg affected in the leg training device for walking training by contacting a healthy leg can be suppressed.

It is a perspective view which shows schematic structure of the leg training device for walk training concerning this Embodiment. It is a side view of the 2nd orthosis in the lower extremity orthosis for walk training concerning this Embodiment. It is a schematic diagram which shows the state which mounted | wore the leg and leg | foot part in the other leg of a trainee with the 2nd brace | limb 3 in the leg brace | limb for walking training concerning this Embodiment. In the 2nd orthosis of the lower extremity orthosis for walking training concerning this Embodiment, it is a schematic diagram which shows a state when the plate for lower legs rotates back with respect to the plate for legs. It is a schematic diagram explaining an example of the joining method of the shoes and the foot | leg plate of the 2nd brace 3 in the lower limb orthosis for walk training concerning this Embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. For clarity of explanation, the following description and drawings are omitted and simplified as appropriate. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted as necessary. In the following figures, the X-axis positive direction is forward, the X-axis negative direction is backward, the Y-axis positive direction is left, the Y-axis negative direction is right, the Z-axis positive direction is upward, and the Z-axis negative direction is downward. , And. In addition, front and rear, left and right, and upper and lower are based on a trainee wearing a lower limb orthosis for walking training.

  In the following description, “leg” is used as a term indicating the thigh and lower leg, “foot” is used as a term indicating a part from the ankle to the toe, and “lower leg” is used as the leg and the foot. It is used as a term indicating parts.

  FIG. 1 is a perspective view showing a schematic configuration of a lower limb orthosis 1 for walking training. As shown in FIG. 1, the lower extremity orthosis 1 for walking training has a first orthosis 2 and a second orthosis 3. The first brace 2 is worn from the leg portion to the foot portion of one lower limb of the walking trainer (the lower limb of the right side of the trainer in FIG. 1). The second brace 3 is attached to at least the foot of the lower leg of the walking trainer (the left leg of the trainer in FIG. 1). Here, one leg of the gait trainer is a paralyzed lower leg (affected leg), and the other leg of the gait trainer is a non-paralyzed leg (healthy leg).

Next, the configuration of the first appliance 2 will be described with reference to FIG.
As shown in FIG. 1, the first brace 2 includes a thigh frame 40, a thigh fixing belt 30, a crus frame 23, a foot frame 25, and a motor unit 26.

  The thigh frame 40 is disposed along the front side or the back side of the trainee's thigh. In FIG. 1, the thigh frame 40 is disposed along the front side of the trainee's thigh. The thigh fixing belt 30 is connected to the thigh frame 40 at a connecting portion, and fixes the trainee's thigh to the thigh frame 40. The connecting portion has a connecting position adjusting mechanism for adjusting the connecting position with the thigh fixing belt 30 in the left-right direction (Y-axis direction) of the trainee. Further, the thigh frame 40 is provided with a horizontally long first frame 28 extending in the left-right direction (Y-axis direction) for connecting to a wire of a pulling mechanism in the walking training apparatus.

  The lower leg frame 23 is rotatably connected to the thigh frame 40 via the knee joint portion 22. The lower leg frame 23 is attached to the lower leg of the trainee's lower leg. The motor unit 26 rotationally drives the knee joint portion 22. Further, the lower leg frame 23 is provided with a lower leg fixing belt 29 for fixing the lower leg of the trainee's lower leg and the lower leg frame 23.

  The foot frame 25 is connected to the lower leg frame 23 via an ankle joint 24. The foot frame 25 is attached to the foot of the trainee's lower limb. The foot frame 25 is provided with a load sensor. The load sensor is a vertical load sensor that detects a vertical load applied to the sole of the foot frame 25, for example. The load sensor outputs the detected load value applied to the sole of the foot frame 25 to the control unit of the walking training apparatus. The ankle joint portion 24 may be provided with an adjustment mechanism 27 that adjusts the movable range and a motor unit that rotationally drives the ankle joint portion 24.

  The configuration of the first appliance 2 described above is an example, and the present invention is not limited to this. The first brace 2 only needs to include at least the thigh frame 40 and the thigh fixing belt 30.

Next, with reference to FIG.1 and FIG.2, the structure of the 2nd orthosis 3 which is the characterizing part in this invention is demonstrated.
FIG. 2 is a side view of the second appliance 3. As shown in FIGS. 1 and 2, the second appliance 3 has a protection plate 50. The protective plate 50 includes a crus plate 51 that covers the rear lower part of the lower leg and a foot plate 52 that covers the rear part of the foot in the other leg of the trainee.

  The lower leg plate 51 includes a main body portion 54 and a connecting portion 53. The main body 54 is a substantially semi-cylindrical member that follows the shape of the rear lower part of the lower leg in the other leg of the trainee. The connecting portion 53 is a member for connecting the main body portion 54 and the foot plate 52, and is disposed so as to protrude downward (Z-axis minus direction) from the positions on both sides of the main body portion 54. The connection part 53 has the rotating shaft 53a mentioned later.

  The connection part 53 and the main-body part 54 are joined via the hook-and-loop fastener. Specifically, either the male or female surface fastener is provided on the joint surface of the connecting portion 53 with the main body portion 54. In addition, a surface fastener having a male-female relationship opposite to the surface fastener provided on the joint surface of the connecting portion 53 is provided on the surface of the main body portion 54 (at least the surfaces on both sides). Thereby, the attachment position of the connection part 53 with respect to the main-body part 54 can be finely adjusted to the front-back direction (X-axis direction) and the up-down direction (Z-axis direction). In the crus plate 51, the main body portion 54 and the connecting portion 53 may be integrally formed.

  The foot plate 52 is a substantially semi-cylindrical member that follows the shape of the rear part of the leg portion of the other leg of the trainee. On both sides of the foot plate 52, there are formed long holes 52a whose longitudinal direction is the longitudinal direction (X-axis direction). In addition, a protrusion 52 b is formed on the rear upper part of the foot plate 52. The rotation shaft 53a in the connecting portion 53 of the lower leg plate 51 described above is rotatably supported by the elongated hole 52a. Thereby, the lower leg plate 51 is configured to be rotatable with respect to the foot plate 52. Further, by finely adjusting the position of the rotating shaft 53a in the front-rear direction (X-axis direction) along the elongated hole 52a, the position of the rotating shaft 53a can be easily matched with the position of the ankle joint of the trainee.

  The main body portion 54 and the connecting portion 53 of the lower leg plate 51 and the foot plate 52 have sufficient strength to protect the trainee's lower limbs from the impact when the first brace 2 collides during training. It is made of a material such as metal or plastic. In addition, in order to raise the effect which protects a trainee's leg from the impact when the 1st brace 2 collides with the other leg of a trainee, in the main-body part 54 and the plate 52 for legs, rather than the connection part 53. You may form the part located back from the material harder than the part located ahead rather than the connection part 53. FIG.

  As shown in FIG. 2, hook and loop fasteners are provided at both end portions 55 a of the belt 55. A surface fastener having a male-female relationship opposite to the surface fasteners at both end portions 55a of the belt 55 is provided on the surface 53b of the connecting portion 53 on the opposite side of the joining portion with the main body portion 54. Thereby, the lower leg plate 51 and the belt 55 can be joined.

  Further, as shown in FIG. 2, surface fasteners are provided at both end portions 56 a of the belt 56. In predetermined regions 52 c on both sides of the foot plate 52, surface fasteners having a male-female relationship opposite to the surface fasteners at both end portions 56 a of the belt 56 are provided. As a result, the foot plate 52 and the belt 56 can be joined.

  In addition, in the hook-and-loop fastener used for each part mentioned above, it is desirable to make it a female form so that it may not hurt even if a trainee etc. touch if an adhesive surface is arrange | positioned facing outward.

  FIG. 3 is a schematic diagram showing a state in which the second brace 3 is worn on the lower leg and the foot of the other leg of the trainee. As shown in FIG. 3, the lower leg plate 51 is fixed to the trainee's lower leg by a belt 55. The foot plate 52 is fixed to the trainee's foot by a belt 56. The position of the rotation shaft 53a as the rotation center for rotating the crus plate 51 with respect to the foot plate 52 is made to coincide with the position of the ankle joint of the trainee. For this reason, during training, the lower leg plate 51 rotates relative to the foot plate 52 so as to follow the movement of the ankle joint of the trainee. Therefore, the smooth movement of the trainee's ankle joint is not hindered during training.

  FIG. 4 is a schematic diagram showing a state when the lower leg plate 51 is rotated rearward with respect to the foot plate 52 in the second orthosis 3. As shown in FIG. 4, when the crus plate 51 rotates backward with respect to the foot plate 52, the rearward rotation of the crus plate 51 is restricted by the protrusion 52 b of the foot plate 52. Is done. Thereby, it is possible to prevent the lower leg plate 51 from rotating more backward than necessary with respect to the foot plate 52.

[Modification 1]
In the lower limb orthosis 1 for gait training shown in FIG. 1, the second orthosis 3 may include a shoe 60 to be attached to the foot portion of the other lower limb of the trainee (the lower limb of the right side of the trainee in FIG. 1). Furthermore, the foot plate 52 included in the protective plate 50 may be configured to be fixed and removable with respect to the shoe 60. If it does in this way, it will become possible to wear | wear with the protection plate 50 only when it is necessary to protect the other leg in a trainee with the protection plate 50 in walking training.

  FIG. 5 is a schematic diagram for explaining an example of a method for joining the shoe 60 and the foot plate 52. As shown in FIG. 5, in the portion 52 d in contact with the shoe 60 inside the foot plate 52, one of male and female surface fasteners is provided. Further, the heel portion 60a of the shoe 60 is provided with a surface fastener having a male-female relationship opposite to the surface fastener provided in the inner portion of the foot plate 52. By configuring the shoe 60 and the foot plate 52 in this manner, the position of the joint portion between the shoe 60 and the foot plate 52 can be easily finely adjusted. Thereby, since the position of the rotating shaft 53a as the rotation center for rotating the crus plate 51 with respect to the foot plate 52 can be more accurately matched with the position of the ankle joint of the trainee, Smooth movement of the ankle joint of the trainee is ensured.

  As described above, the lower limb orthosis 1 for walking training according to this embodiment is equipped with the second brace 3 having the protective plate 50 that covers the rear part of the foot and the rear lower part of the lower leg in the other leg of the walking trainer. By doing so, it is possible to protect the lower leg of the trainee from the impact when the first brace 2 collides with the other leg of the trainee during training. Further, since the crus plate 51 in the protective plate 50 is configured to be rotatable with respect to the foot plate 52, the crus plate 51 follows the movement of the ankle joint of the trainee during training. In this way, it rotates with respect to the foot plate 52. Therefore, the smooth movement of the trainee's ankle joint is not hindered during training. Thereby, the fall of the efficiency of the gait training resulting from the brace | limb mounted on the affected leg in the lower limb orthosis 1 for gait training coming into contact with a healthy leg can be suppressed.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. In the above embodiment, the protective plate 50 includes the lower leg plate 51 that covers the rear lower part of the lower leg and the foot plate 52 that covers the rear part of the foot part in the other leg of the trainee, and the lower leg. The plate 51 is configured to be rotatable with respect to the foot plate 52. In contrast to this configuration, the protective plate 50 is an integral structure in which the lower leg plate 51 and the foot plate 52 are not divided, and only the rigidity of the portion located near the ankle joint is lower than the rigidity of the other portions. Even with this configuration, the same effects as those of the above embodiment can be exhibited.

DESCRIPTION OF SYMBOLS 1 Leg brace 2 for walking training 1st brace 3 2nd brace 22 Knee joint part 23 Lower leg frame 24 Ankle joint part 25 Foot frame 26 Motor unit 27 Adjustment mechanism 28 First frame 29 Lower leg fixing belt 30 Thigh fixation belt 40 Thigh frame 50 Protective plate 51 Lower leg plate 52 Foot plate 52a Long hole 52b Protruding portion 53 Connecting portion 53a Rotating shaft 54 Body portion 55, 56 Belt 60 Shoes

Claims (1)

A first brace that is worn from one leg to the other leg of the walking trainer;
A second brace to be worn on at least the foot of the other leg of the gait trainer,
The second brace has a protective plate that covers the rear part of the foot and the rear lower part of the lower leg in the other lower limb,
The protective plate includes a foot plate that covers a rear part of the foot in the other lower limb, and a crus plate that covers a rear lower part of the lower leg in the other lower limb,
The lower leg brace for walking training, wherein the lower leg plate is configured to be rotatable with respect to the foot plate.

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