JP6859909B2 - Lower limb orthosis for walking training - Google Patents

Description

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

For trainers, especially those who suffer from hemiplegia, there is known a walking training lower limb orthosis that is attached to the lower limb (affected leg) on the hemiplegic side of the trainer to rehabilitate the affected leg. .. Patent Document 1 describes a thigh link (thigh frame) that is attached along the thigh of a trainee and a crus link (lower leg) that is swingably connected to the thigh link and is attached along the lower leg. A lower limb device for walking training is described, which comprises a frame) and a foot link (foot frame) to be attached to the foot.

JP-A-2017-108991

By the way, in the lower limb orthosis for walking training, it is known that the foot frame has the same shape as a general shoe, that is, a shape in which a tubular member covering the toe is arranged in a portion corresponding to the toe. ing. When the foot frame had such a shape, the trainee had to move the tip of the foot horizontally and put it in the tubular member. However, for example, for a trainee suffering from hemiplegia, it is a highly difficult operation to move the toes horizontally and put them in the tubular member. For this reason, it was difficult to attach the foot frame to a trainee suffering from hemiplegia.

The present invention has been made in view of the above background, and an object of the present invention is to provide a lower limb orthosis for walking training in which a foot frame can be easily attached to the foot of a trainee.

According to the present invention, in a walking training lower limb device worn so as to cover at least the foot to the lower leg of the trainee's lower limbs, a bottom plate portion for placing the sole of the foot of the trainee and the bottom plate portion. It is configured to be rotatable with respect to the bottom plate portion via the foot frame having the ankle joint mechanisms provided on both the left and right sides of the trainer, and extends along the legs of the trainee. The foot frame further comprises a pair of belts extending from the heel side portion of the bottom plate portion to fasten the trainee's ankle.

Since the belt extends rearward from the heel side portion of the bottom plate portion, there is no obstacle in the traveling direction in which the trainee advances the foot portion into the foot frame. This allows the trainee to easily allow the foot to enter the foot frame. Then, after the trainee easily enters the foot into the foot frame, the trainee's ankles are fastened with a pair of belts. As a result, the foot frame can be easily attached to the foot of the trainee.

According to the present invention, the foot frame can be easily attached to the foot of the trainee.

It is a perspective view which shows the schematic structure of the lower limb orthosis for walking training which concerns on this embodiment. It is a schematic diagram which enlarged the part surrounded by the broken line A in FIG. It is a schematic diagram which enlarged the part surrounded by the broken line B in FIG. It is a schematic diagram which shows a mode that a trainee puts a foot part into a foot frame with a belt temporarily fixed. It is a schematic diagram which shows the fixing state of the foot part by a belt when the belt is not temporarily fixed to the inside of a column. It is a schematic diagram which shows the fixing state of the foot part by a belt when the belt is temporarily fixed to the inside of a column.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In order to clarify the explanation, the following description and drawings have been omitted or simplified as appropriate. In each drawing, the same elements are designated by the same reference numerals, and duplicate explanations are omitted as necessary. Further, in the following figure, 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. The front and back, left and right, and up and down are based on the trainee wearing the lower limb orthosis for walking training.

Further, in the following description, "leg" is used as a term for the thigh and lower leg, "foot" is used as a term for the part from the ankle to the toe, and "lower limb" is used for the leg and foot. Used as a term to indicate a part.

FIG. 1 is a perspective view showing a schematic configuration of a walking training lower limb orthosis 2. Here, the lower limb orthosis 2 for walking training is included in a walking training device that performs walking training of a trainer such as a stroke hemiplegic patient, and is attached to the affected leg of the trainer to assist the trainer's walking. belongs to. As shown in FIG. 1, the walking training lower limb orthosis 2 includes a thigh frame 40, a thigh fixing belt 30, a lower leg frame 23, a foot frame 50, and a motor unit 26.

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

The lower leg frame 23 extends along the lower leg of the trainee and 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 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 portion of the trainee's lower limbs and the lower leg frame 23. The foot frame 50 is attached to the foot of the trainee's leg.

The configuration of the lower limb orthosis 2 for walking training described above is an example, and is not limited to this. The walking training lower limb orthosis 2 may be configured to include at least the foot frame 50 and the lower leg frame 23 in the lower limbs of the trainee so as to cover the lower leg from the foot.

Next, a detailed configuration of the foot frame 50, which is a feature of the present invention, will be described.
FIG. 2 is an enlarged schematic view of a portion surrounded by the broken line A in FIG. As shown in FIG. 2, the foot frame 50 has a bottom plate portion 51 and an ankle joint mechanism 27. The bottom plate portion 51 is for placing the sole of the foot on the trainee's foot. The ankle joint mechanism 27 is provided on the columns 53 erected on both the left and right sides of the bottom plate portion 51. The foot frame 50 is connected to the above-mentioned lower leg frame 23 via an ankle joint portion 24. As a result, the lower leg frame 23 is configured to be rotatable with respect to the bottom plate portion 51 of the foot frame 50.

The foot frame 50 further comprises a pair of belts 52 extending from the heel side portion 51a of the bottom plate portion 51 to fasten the trainee's ankle. A hook-and-loop fastener 52a is provided at the tip of the belt 52. The side surface portion 52b of the belt 52 other than the tip end portion is provided with a hook-and-loop fastener having a male-female relationship opposite to that of the surface fastener 52a at the tip portion.

Since the belt 52 extends rearward from the heel side portion 51a of the bottom plate portion 51, it becomes an obstacle in the traveling direction (arrow C in the figure) in which the trainee advances the foot portion into the foot frame 50. There is no. After the trainee enters the foot into the foot frame 50, the trainee's ankles are fastened with a pair of belts 52. At the time of fastening, the hook-and-loop fastener 52a at the tip portion of one belt 52 and the hook-and-loop fastener 52b at the side surface portion 52b of the other belt 52 are adhered to each other. In this way, the foot frame can be easily attached to the foot of the trainee. A pair of instep belts 54 may be provided on both sides in front of the foot frame 50 to cover the instep of the trainee's foot. The pair of instep belts 54 are provided with hook-and-loop fasteners 54a and 54b, which have opposite male-female relationships, respectively.

FIG. 3 is an enlarged schematic view of the portion surrounded by the broken line B in FIG. As shown in FIG. 3, on the inner surface of the support column 53 erected on both the left and right sides of the bottom plate portion 51, the male-female relationship with the side surface portion 52b of the belt 52 is opposite (that is, the surface fastener 52a at the tip portion). A hook-and-loop fastener 53a (with the same male-female relationship) may be provided. In this way, the side surface portion 52b of the belt 52 can be adhered to the hook-and-loop fastener 53a, and the belt 52 can be temporarily fixed to the inside of the support column 53.

FIG. 4 is a schematic view showing a state in which the trainee advances the foot portion into the foot frame 50 in a state where the belt 52 is temporarily fixed to the inside of the support column 53. As shown in FIG. 4, even if the belt 52 is temporarily fixed to the inside of the support column 53, there is an obstacle in the traveling direction (arrow D in the figure) in which the trainee enters the foot into the foot frame 50. Absent.

5 and 6 are schematic views illustrating the effect of temporarily fixing the belt 52 to the inside of the support column 53. FIG. 5 is a schematic view showing a state in which the foot portion is fixed by the belt 52 when the belt 52 is not temporarily fixed to the inside of the support column 53. Further, FIG. 6 is a schematic view showing a state in which the foot portion is fixed by the belt 52 when the belt 52 is temporarily fixed to the inside of the support column 53.

As shown in FIG. 5, when the belt 52 is not temporarily fixed, if the gap W between the columns 53 erected on the left and right sides of the bottom plate 51 and the side surface of the trainer's foot is narrow, the belt 52 trains. When fastening the foot of the person, it is necessary to rotate the belt 52 from the outside of the support column 53 to the front. This is because the gap W between the support column 53 and the side surface of the trainee's foot is narrow, so that after the trainee has entered the foot into the foot frame 50, the belt 52 is attached to the support column 53 and the trainee's foot. This is because it cannot be brought forward through between the sides. When the trainer's foot is attached to the foot frame 50 by rotating the belt 52 forward from the outside of the support column 53 in this way, the trainee's foot is placed on the foot frame due to the gap between the support column 53 and the trainee's foot. It is not fixed properly to 50.

On the other hand, as shown in FIG. 6, when the belt 52 is temporarily fixed, the tip of the belt 52 is already inside the support column 53 before the trainee enters the foot. Therefore, even if the gap W between the support columns 53 erected on the left and right sides of the bottom plate portion 51 and the side surfaces of the trainee's foot is narrow, when the trainer's foot is fastened with the belt 52, the belt 52 By removing the temporary fixing, the belt 52 can be turned forward from the inside of the support column 53.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit. In the above embodiment, a hook-and-loop fastener is used to temporarily fix the belt 52 to the columns 53 erected on both the left and right sides of the bottom plate portion 51, but the present invention is not limited to this, and other methods may be used. .. For example, a magnet and a metal (magnetic material) may be used for temporary fixing. In this case, for example, a magnet is provided inside the support column 53, and metal is provided on a part of the belt 52. Further, a hook mechanism may be used for temporary fixing. In this case, a hole or a ring is provided inside the support column 53, and a hook is provided on a part of the belt 52.

When the instep belt 54 that covers the instep of the trainee's foot is provided, the instep belt 54 may be temporarily fixed to the support column 53. Further, in order to fix the foot of the trainee, a fixing belt other than the belt 52 and the instep belt 54 may be further arranged.

Similar to the belt 52 that fixes the foot frame 50 to the trainer's foot, the belt for fastening the trainer's thigh to the thigh frame 40 is placed at a predetermined position that does not interfere with the entry of the trainer's leg. It may be temporarily fixed. Further, the belt for fastening the lower leg portion of the trainee to the lower leg frame 23 may be temporarily fixed at a predetermined position that does not hinder the entry of the leg portion of the trainee.

2 Lower limb orthosis for walking training 22 Knee joint 23 Lower leg frame 24 Ankle joint 25 Foot flat frame 26 Motor unit 27 Ankle joint mechanism 28 1st frame 29 Lower leg fixing belt 30 Thigh fixing belt 40 Thigh frame 50 Foot frame 51 Bottom plate 51a Heel side 52 Belt 53 Strut 54 Instep belt

Claims (1)

In the walking training lower limb orthosis worn at least from the foot to the lower leg in the trainer's lower limbs
A foot frame having a bottom plate portion on which the sole of the foot of the trainee is placed and ankle joint mechanisms provided on both the left and right sides of the bottom plate portion.
The lower leg frame, which is configured to be rotatable with respect to the bottom plate portion via the ankle joint mechanism and extends along the leg portion of the trainee, is provided.
The foot frame extends from the heel portion of the bottom plate, further have a pair of belts for fastening the ankle of the trainee,
One of the pair of belts passes through a gap between the ankle joint mechanism provided on the left side of the bottom plate portion and the left side surface of the trainee's ankle.
The other of the pair of belts passes through a gap between the ankle joint mechanism provided on the right side of the bottom plate portion and the right side surface of the trainee's ankle.
The pair of belts are lower limb orthoses for walking training that fasten the ankles of the trainee.

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