JP2021078962A - Ankle foot orthosis and coupling member for ankle foot orthosis - Google Patents

Abstract

To provide an ankle foot orthosis and coupling members for the ankle foot orthosis capable of supporting appropriate motion exercise according to rehabilitation periods by arbitrarily adjusting movable ranges of plantar flexion and dorsiflexion of the ankle foot orthosis.SOLUTION: An ankle foot orthosis 1 comprises a plantar worn part 2 to be worn on a plantar part; and a lower leg worn part 3 to be worn to the lower leg part, where the plantar worn part 2 and the lower leg worn part 3 are coupled by an inner foot coupling part 4 and an outer foot coupling part 5. The inner foot coupling part 4 and the outer foot coupling part 5 include turning regulation parts for regulating turning ranges in the plantar flexion direction and dorsiflexion direction, and the turning regulation parts can arbitrarily adjust the turning ranges in the plantar flexion side and the dorsiflexion side according to the rehabilitation periods.SELECTED DRAWING: Figure 1

Description

The present invention relates to an ankle foot orthosis and a connecting member for an ankle foot orthosis. More specifically, the present invention relates to an ankle foot orthosis and a connecting member for an ankle foot orthosis that can support appropriate exercise training according to the rehabilitation time by arbitrarily adjusting the movable range of the plantar dorsiflexion of the ankle foot orthosis. It is a thing.

Hemiplegia or peripheral nerve palsy due to stroke, cerebral hemorrhage, or cerebral infarction can cause disorders in which the ankle joint cannot move freely on its own initiative. Patients with such disorders cannot move their weight smoothly because their toes hang down when walking (hanging feet), which makes walking difficult.

Conventionally, patients with such symptoms of drooping legs have difficulty walking due to their toes getting caught on the floor, so ankle foot orthosis is generally used as an auxiliary tool to realize walking that is close to healthy. Has been done.

As such ankle foot orthosis, metal ankle foot orthosis has been mainly used in the past. However, metal ankle foot orthoses were heavy, did not always look good, and were not easy to use. Therefore, in recent years, ankle foot orthoses made of plastic or synthetic resin, which are lightweight and look good, have become the mainstream.

For example, Patent Document 1 discloses an ankle foot orthosis that is made of a relatively hard synthetic resin and in which a sole plate portion on which the sole is placed and a lower leg attachment portion to be attached to the lower leg are continuously integrally molded. Has been done. According to this ankle foot orthosis, the weight of the entire orthosis is reduced and the appearance is improved, and since the sole plate and the lower leg attachment part are integrally molded, the ankle plantar flexion motion (in the direction in which the toes hang down). Both bending) and dorsiflexion (bending in the direction that the toes are lifted) are blocked, and it is possible to correct the drooping leg.

However, as in the ankle foot orthosis described in Patent Document 1, if the ankle joint is firmly fixed and both the plantar flexion motion and the dorsiflexion motion are blocked, the ankle joint becomes almost immobile and walking. Has the drawback of being unnatural. In particular, for patients in the acute phase and the convalescent phase who start walking training, training with such ankle foot orthosis may conversely hinder recovery.

Therefore, for example, Patent Document 2 discloses an ankle foot orthosis having an auxiliary function for assisting the plantar flexion motion of the foot after the heel of the patient is placed on the ground.

Specifically, the ankle foot orthosis is composed of a lower leg attachment part, a sole plate part attached to the sole, a damper, and a connecting shaft, and a guide block, a link, and an ankle foot orthosis are attached to the movable end of the damper. Has a guide rail that extends in the anterior-posterior direction of the patient when worn on the patient. The lower end of the link is fixed to the sole plate, and the upper end is slidably engaged with the guide rail. In such a connecting mechanism, the link engaged with the guide rail in conjunction with the swing of the sole plate portion is fixed to the lower leg mounting portion by moving the guide block linearly along the longitudinal direction of the lower leg. The damper is functioning, and it is possible to assist the plantar flexion movement of the foot after the heel is placed on the ground.

In addition, with the progress of material development in recent years, carbon (carbon fiber reinforced plastic) as a material that is lighter than plastic or synthetic resin and has excellent strength is attracting attention, and bottom dorsiflexion using carbon as a material. The present inventor has proposed an ankle foot device capable of exercise (Patent Document 3) and a method for manufacturing the same (Patent Document 4).

By the way, the movement of the ankle actually progresses while the plantar dorsiflexion movement of the ankle joint rotates slightly in the supination and inward directions. This is because the height positions of the inner ankle (inner malleolus) and the outer malleolus (outer malleolus) of the ankle part are different (the outer malleolus is located closer to the ground side than the inner malleolus).

However, in the ankle foot orthosis disclosed in Patent Document 2 and Patent Document 3, the attachment position of the lower leg attachment portion that holds the calf portion of the foot and the connection portion that connects the sole plate portion that holds the sole of the foot is different. It did not take into account the height positions of the inner and outer fruits.

That is, since the outer fruit is located on the side closer to the ground side with respect to the inner fruit, the virtual straight line connecting the inner fruit and the outer fruit has a predetermined inclination angle with respect to the horizontal axis. Therefore, the center position of the connection portion on the outer malleolus side should be located closer to the ground than the center position of the connection portion on the medial malleolus side. The connection part on the inner fruit side and the connection part on the outer fruit side were attached at the same height position. Therefore, not only the supogenic action and the supination action associated with the smooth plantar dorsiflexion movement are hindered and appropriate rehabilitation exercise cannot be performed, but also it causes discomfort and pain when wearing the ankle foot orthosis.

Therefore, the inventor of the present patent application proposes an ankle foot orthosis for the purpose of supporting proper walking by promoting the supogenic action and the supination action of the foot, and a method for manufacturing the ankle foot orthosis. Patent Document 5). Specifically, the sickness is caused by the rotation axes of the medial and lateral connecting members connecting the sole and lower leg orthoses of the ankle foot orthosis substantially corresponding to the outer and inner malleolus points, respectively. Smooth plantar dorsiflexion is achieved without inhibiting the supination and pronation of the foot.

Japanese Unexamined Patent Publication No. 9-103443 Japanese Unexamined Patent Publication No. 2011-98014 Japanese Unexamined Patent Publication No. 2017-196187 Japanese Unexamined Patent Publication No. 2016-107614 Japanese Patent Application No. 2018-0885

By the way, patients suffering from stroke generally receive appropriate rehabilitation according to the rehabilitation period classified into the acute phase, convalescent phase, and living phase to improve their physical function and ability and recover their deteriorated mental and physical functions. In addition, it is required to increase the degree of independence of various activities in daily life.

For example, with regard to the plantar dorsiflexion movement of the ankle, in the acute phase, the range of motion should be narrowed as much as possible to rest as much as possible, and as the transition to the recovery phase and the life phase, the range of motion should be gradually widened. It is expected to recover physical ability more efficiently.

However, in the connecting member disclosed in Patent Document 5, the movable region of plantar dorsiflexion is uniform, and it is not possible to set an appropriate movable region according to the rehabilitation time. It was not always possible to provide appropriate exercise training according to the patient's rehabilitation time.

The present invention was devised in view of the above points, and it is possible to support appropriate exercise training according to the rehabilitation time by arbitrarily adjusting the movable range of the plantar dorsiflexion of the ankle foot orthosis. It is an object of the present invention to provide an ankle foot orthosis and a connecting member for the ankle foot orthosis.

In order to achieve the above object, the ankle foot device of the present invention is provided on the sole mounting portion mounted on the sole portion, the lower leg mounting portion mounted on the lower leg portion, and the medial foot of the sole mounting portion. The first in-foot bracket to be arranged, the second in-foot bracket to be arranged inside the foot of the lower leg mounting portion, so as to be rotatable in a predetermined rotation range from the reference position in the plantar flexion direction and the dorsiflexion direction. At least one of the foot connection portion connecting the first foot bracket and the second foot bracket, the first foot bracket and the second foot bracket in the plantar flexion direction or the dorsiflexion direction. On the inward connecting portion having the inward rotation restricting portion that regulates the rotation range in the direction, the first outer foot bracket arranged on the lateral side of the sole mounting portion, and the lateral side of the foot of the lower leg mounting portion. The second outer foot bracket to be arranged, the first outer foot bracket and the second outer foot bracket are connected so as to be rotatable in a predetermined rotation range in the plantar flexion direction and the dorsiflexion direction from the reference position. A foot having an extra-foot connection portion, an extra-foot rotation restricting portion that regulates a rotation range of the first extra-foot bracket and the second extra-foot bracket in at least one direction in the plantar flexion direction or the dorsiflexion direction. It is provided with a foot outer connecting portion having an outer connecting portion.

Here, the sole mounting portion mounted on the sole portion, the lower leg mounting portion mounted on the lower leg portion, the first instep bracket arranged on the medial side of the sole mounting portion, and the foot of the lower leg mounting portion. The second in-foot bracket arranged inside, the first in-foot bracket and the second in-foot bracket are connected so that they can rotate within a predetermined rotation range in the plantar flexion direction and the dorsiflexion direction from the reference position. By providing the in-foot connecting portion having the in-foot connecting portion, the sole mounting portion can be rotated in the sole dorsiflexion direction with respect to the lower leg mounting portion. At this time, for example, by providing the rotation axis of the in-foot connecting portion at a position substantially corresponding to the inner malleolus end point of the affected foot, the supination action and the supination action of the affected foot are not hindered and smooth plantar dorsiflexion movement is performed. It can be realized.

Further, the in-foot connecting portion has an in-foot rotation restricting portion that regulates the rotation range of the first in-foot bracket and the second in-foot bracket in at least one direction in the plantar flexion direction or the dorsiflexion direction. , The movable area of plantar dorsiflexion can be arbitrarily set according to the rehabilitation time.

That is, for example, in the acute phase of the initial stage of rehabilitation, priority is given to narrowing the rotation range as much as possible (fixing the ankle as necessary) and resting, and with the transition from the acute phase to the recovery phase, the direction of dorsiflexion The movable area can be arbitrarily set so as to allow exercise and also to allow exercise in the plantar flexion direction in addition to the dorsiflexion direction with the transition from the recovery period to the life period.

Further, the sole mounting portion mounted on the sole portion, the lower leg mounting portion mounted on the lower leg portion, the first outer foot bracket arranged on the outer side of the foot of the sole mounting portion, and the outer side of the foot of the lower leg mounting portion. The first foot outer bracket and the second foot outer bracket are arranged so as to be rotatable in a predetermined rotation range in the plantar flexion direction or the dorsiflexion direction from the reference position. By providing the foot outer connecting portion having the foot outer connecting portion to be connected, the sole mounting portion can be rotated in the sole dorsiflexion direction with respect to the lower leg mounting portion. At this time, for example, by providing the rotation axis of the foot external connection portion at a position substantially corresponding to the outer malleolus end point of the affected foot, the supination action and the supination action of the affected foot are not hindered and smooth plantar dorsiflexion movement is performed. It can be realized.

Further, the foot outer connecting portion has a foot outer rotation restricting portion that regulates the rotation range of the first foot outer bracket and the second foot outer bracket in at least one direction in the plantar flexion direction or the dorsiflexion direction. As described above, the movable region of plantar dorsiflexion can be arbitrarily set according to the rehabilitation time.

Further, the tips of the in-foot rotation restricting portion face each other when the in-foot connecting portion is in the rotation center position which is the reference position, and the first in-foot bracket to the second in-foot bracket and the second in-foot bracket When the foot has a pair of in-foot protrusions protruding from the in-foot bracket toward the first in-foot bracket by a predetermined amount of protrusion, the first in-foot bracket and the second in-foot bracket are provided. By adjusting the amount of protrusion of the in-foot protrusion, it is possible to set an arbitrary range of movement of the plantar dorsiflexion according to the rehabilitation time.

Further, when the foot outer rotation restricting part is in the rotation center position which is the reference position, the tips of the foot outer rotation restricting part face each other, and the first foot outer bracket to the second foot outer bracket and the second foot outer bracket When the foot has a pair of protrusions protruding from the foot bracket toward the first foot bracket by a predetermined protrusion amount, the first foot bracket and the second foot bracket are provided. By adjusting the amount of protrusion of the extrafoot protrusion, it is possible to set an arbitrary range of movement of the plantar dorsiflexion according to the rehabilitation time.

Further, the in-foot rotation restricting portion has an in-foot plantar flexion side rotation restricting portion and an in-foot dorsiflexion side rotation restricting portion, and the in-foot plantar flexion side rotation restricting portion is more than an in-foot connecting portion. The pair of first in-foot protrusions located on the heel side of the affected foot and the in-foot dorsiflexion-side rotation restricting part are located on the toe side of the affected foot with respect to the in-foot connection part. When a protruding portion is included, rotation to the plantar flexion side and the dorsiflexion side is regulated by adjusting the protrusion amount of the first in-foot protrusion and the second in-foot protrusion to a predetermined value. Can be done.

Further, the foot outer rotation restricting part has a foot outer plantar flexion side rotation restricting part and a foot outer dorsiflexion side rotation restricting part, and the foot outer plantar flexion side rotation restricting part is more than the foot outer connection part. The pair of first extrafoot protrusions located on the heel side of the affected foot and the pair of extrafoot dorsiflexion side rotation restricting portions are located on the toe side of the affected foot with respect to the extrafoot connection portion. When a protruding portion is included, rotation to the plantar flexion side and the dorsiflexion side is regulated by adjusting the protrusion amount of the first extrafoot protrusion and the second extrafoot protrusion to a predetermined value. Can be done.

Further, the in-foot protrusion is the in-foot protrusion when a screw groove screwed into the screw hole formed in the first in-foot bracket and the second in-foot bracket is formed on the outer periphery. The amount of protrusion can be changed by a simple operation of rotating the protrusion in the foot with respect to the screw hole, and the amount of protrusion can be accurately adjusted to an arbitrary amount.

Further, the foot outer protrusion is a foot outer protrusion when a screw groove screwed into the first foot bracket and the screw hole formed in the second foot bracket is formed on the outer periphery. The amount of protrusion of the foot can be changed by a simple operation of rotating the protruding portion of the foot with respect to the screw hole, and the amount of protrusion can be accurately adjusted to an arbitrary amount.

In order to achieve the above object, the connecting member for the ankle foot orthosis of the present invention connects the sole attachment portion attached to the sole portion constituting the ankle foot orthosis and the lower leg attachment portion attached to the lower leg portion. The first bracket, the second bracket, and the first bracket so as to be rotatable in a predetermined rotation range in the plantar flexion direction and the dorsiflexion direction from the reference position in the connecting member for the ankle foot orthosis. And a connection portion for connecting the second bracket, and a rotation restricting portion for restricting a rotation range of the first bracket and the second bracket in at least one direction in the plantar flexion direction or the dorsiflexion direction. ..

Here, the first bracket and the second bracket are connected so as to be rotatable in a predetermined rotation range in the plantar flexion direction and the dorsiflexion direction with the connection portion as the rotation axis as the base point. By providing the connecting portion, the sole mounting portion can be rotated in the plantar dorsiflexion direction with respect to the lower leg mounting portion.

Further, as described above, the connecting member has a rotation restricting portion that regulates the rotation range of the first bracket and the second bracket in at least one direction in the plantar flexion direction or the dorsiflexion direction, so that the rehabilitation time can be adjusted. The movable area of plantar dorsiflexion can be arbitrarily set accordingly.

Further, in the rotation restricting portion, when the first connecting portion and the second connecting portion are at the rotation center position, the tips face each other, and the first bracket to the second bracket and the second bracket When having a pair of protrusions protruding toward the first bracket with a predetermined protrusion amount, the protrusion amount of the protrusions provided on the first bracket and the second bracket can be arbitrarily adjusted. , Any range of plantar dorsiflexion can be set according to the rehabilitation period.

Further, when the protruding portion has a screw groove formed on the outer periphery of the first bracket and the screw hole formed in the second bracket, the protruding portion is changed when the protruding amount is changed. , It can be performed by a simple operation of rotating the protruding portion with respect to the screw hole, and can be accurately adjusted to an arbitrary protruding amount.

The ankle foot orthosis and the connecting member for the ankle foot orthosis according to the present invention can support appropriate exercise training according to the rehabilitation time by arbitrarily adjusting the movable range of the plantar dorsiflexion of the ankle foot orthosis. It has become something like that.

It is a front perspective view of the ankle foot orthosis which concerns on embodiment of this invention. It is a side view of the ankle foot orthosis which concerns on embodiment of this invention. It is an exploded enlarged view of the connection part of the ankle foot orthosis which concerns on embodiment of this invention. It is an enlarged view of the foot protrusion part which concerns on embodiment of this invention. It is a rear view of the ankle foot orthosis which concerns on embodiment of this invention. It is a figure explaining the method of using the connecting member for ankle foot orthosis which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention relating to the ankle foot orthosis and the connecting member for the ankle foot orthosis will be described with reference to the drawings, and the present invention will be understood. In each figure, for convenience of explanation, in a state where the ankle foot device is attached to the affected leg of the patient, the direction from the bottom of the foot to the lower leg is upward, and the opposite direction of upward is downward, upward, and so on. The axial direction represented by the downward direction is defined as the vertical axis, and the axial direction perpendicular to the vertical axis is defined as the horizontal axis.

First, the overall configuration of the ankle foot orthosis 1 according to the embodiment to which the present invention is applied will be described with reference to FIGS. 1 to 3. For convenience of explanation, the ankle foot orthosis 1 for the right foot will be described here. The ankle foot orthosis 1 is made of a thermoplastic synthetic resin material, and is mainly composed of a sole mounting portion 2, a lower leg mounting portion 3, an intrafoot connecting portion 4, and an external connecting portion 5.

The sole mounting portion 2 covers the foot resting portion 21 on which the sole of the affected foot is placed, the inner and outer malleolus of the affected foot, and the Achilles tendon, and is erected from the foot resting portion 21 along the vertical axis. It is composed of a covering portion 22.

At the upper end of the medial side of the foot of the foot covering portion 22, a first medial foot medial recess 23 into which the first infoot bracket 41, which is a part of the infoot connecting portion 4 to be described later, is fitted is recessed. A second foot outer recess 24 into which the first foot outer bracket 51, which is a part of the foot outer connecting portion 5 described later, is inserted is recessed in the upper end portion of the foot outer side of the covering portion 22.

The lower leg mounting portion 3 is a rear support type, has a substantially U-shaped cross section with the front side open, and abuts on the rear surface contact portion 31 of the lower leg that contacts the rear surface of the lower leg and both side surfaces of the lower leg portion. The lower leg side contact portion 32 is integrally formed.

Here, the lower leg mounting portion 3 does not necessarily have to be a front support type that supports the rear surface of the lower leg portion. For example, it may be a front support type lower leg mounting portion having a lower leg front contact portion that contacts the front surface of the lower leg portion and the rear surface side is open.

At the lower end of the medial side of the foot of the lower leg mounting portion 3, a first medial foot medial recess 33 into which the second infoot bracket 42, which is a part of the infoot connecting portion 4 described above, is fitted is recessed. A second foot lateral recess 34 into which the second foot outer bracket 52, which is a part of the foot outer connecting portion 5, is fitted, is recessed in the lower end of the foot outer side of the lower leg mounting portion 3. There is.

The sole mounting portion 2 and the lower leg mounting portion 3 have a first belt body 25 and a second belt body 35 for fixing the affected foot to the ankle foot orthosis 1. The first belt body 25 and the second belt body 35 are flexible belt members having a predetermined width and length, and one end side is a free end so that they can be engaged with, for example, a metal holder portion (not shown). The other end side is fixed to the sole mounting portion 2 and the lower leg mounting portion 3 by a known fixing means such as a rivet.

When the ankle foot orthosis 1 is attached to the affected foot, the foot of the affected foot is attached to the sole attachment portion 2 and the lower leg portion of the affected foot is attached to the lower leg attachment portion 3, and then the first belt is attached. The free ends of the body 25 and the second belt body 35 are inserted into the holder portion, the tip end side is folded back, and the body 25 and the second belt body 35 are fixed at an arbitrary position by a fixing means such as a surface fastener.

Here, the first belt body 25 and the second belt body 35 do not necessarily have to be fixed at arbitrary positions by a hook-and-loop fastener or the like. For example, it may be configured to be locked in a predetermined fixed position. However, since it can be attached and detached at a variable position by a hook-and-loop fastener, the locking position can be appropriately selected according to the patient's pathological condition, the use of rehabilitation training, the situation, and the like.

The in-foot connecting portion 4 is a jig for connecting the medial side of the foot of the sole mounting portion 2 and the medial side of the foot of the lower leg mounting portion 3, and is combined with the first in-foot bracket 41 made of a substantially rectangular plate-like body. It is composed of a second foot bracket 42.

The first in-foot bracket 41 is fitted into the first medial foot recess 23 as described above, and is fixed to the upper end of the medial foot of the sole mounting portion 2. Further, the second in-foot bracket 42 is fitted into the first medial foot recess 33 and is fixed to the lower end of the medial foot of the lower leg mounting portion 3. Then, the first in-foot bracket 41 and the second in-foot bracket 42 are rotatably supported by the shaft (the connection portion between the first in-foot bracket 41 and the second in-foot bracket 42 is "inside the foot". It is defined as "connection part 43".).

The foot outer connecting portion 5 is a jig for connecting the outer foot of the sole mounting portion 2 and the outer foot of the lower leg mounting portion 3, and is combined with the first foot outer bracket 51 made of a substantially rectangular plate-like body. It is composed of a second foot outer bracket 52.

The first foot outer bracket 51 is fitted into the second foot outer recess 24, and is fixed to the upper end of the foot outer side of the sole mounting portion 2 by a bolt 53. Further, the second foot outer bracket 52 is fitted into the second foot outer recess 34, and is fixed to the lower end of the foot outer side of the lower leg mounting portion 3 by a bolt. The first foot outer bracket 51 and the second foot outer bracket 52 are rotatably supported by bolts (the connection portion between the first foot outer bracket 51 and the second foot outer bracket 52 is "". It is defined as "outer foot connection 53".)

As shown in FIG. 5, when the rotation axis substantially corresponding to the in-foot connection portion 43 is a1 and the rotation axis substantially corresponding to the outer foot connection portion 53 is a2, the rotation axis a1 is inside the affected foot. Approximately corresponds to the fruit end point, and the rotation axis a2 substantially corresponds to the outer fruit end point of the affected foot. At this time, the virtual straight line L connecting the rotation axis a1 and the rotation axis a2 has an inclination angle of approximately 8 to 13 ° with respect to the horizontal axis H.

Here, it is not always necessary to provide the rotation shaft a1 and the rotation shaft a2 at positions substantially corresponding to the inner fruit end point and the outer fruit end point. However, by providing the rotation axes a1 and a2 at positions substantially corresponding to the inner fruit end point and the outer fruit end point, the movement of the ankle foot orthosis 1 can be made closer to the movement of the affected foot, and thus the supination of the affected foot. Smooth plantar dorsiflexion can be achieved without inhibiting the action or supination.

Next, the detailed structure of the in-foot connecting portion 4 and the outer-foot connecting portion 5 will be described with reference to FIGS. 3 and 4, but the in-foot connecting portion 4 and the outer-foot connecting portion 5 have the same structure. Therefore, for convenience of explanation, the description will be made based on the foot outer connecting portion 5. In the configuration of the in-foot connecting portion 4, "outside the foot" shall be read as "inside the foot" in the names of the respective parts described below.

As shown in FIG. 3, a first foot outer convex portion 511 is formed so as to protrude from the first foot outer bracket 51 constituting the foot outer connecting portion 5, and the first foot outer convex portion 511 has a first. The foot outer step portion 512 of 1 is formed. On the other hand, in the second foot outer bracket 52 as well as the first foot outer bracket 51, the second foot outer convex portion 521 is formed so as to protrude, and the second foot outer convex portion 521 has the second foot outer protrusion 521. A step portion 522 is formed.

Since the joint surface of the first foot outer step portion 512 and the second foot outer step portion 522 is formed with an inclined surface inclined to the same slope, the first foot outer bracket 51 and the second foot outer step portion 51 and the second foot outer step portion are formed. The brackets 52 are fitted so as to form the same plane without gaps so as to be alternately meshed with each other, and are rotatably supported by bolts.

Here, the first foot outer step portion 512 and the second foot outer step portion 522 are necessarily fitted so that the first foot outer bracket 51 and the second foot outer bracket 52 form the same plane. It is not necessary to have a step, and a step may be formed. However, since the first foot outer bracket 51 and the second foot outer bracket 52 are fitted so as to form the same plane, the foot outer connecting portion 5 can be installed even in a space-saving manner.

Further, the joint surface of the first foot outer step portion 512 and the second foot outer step portion 522 does not necessarily have to be formed with an inclined surface inclined to the same slope. However, since the inclined surface is formed, the fastening between the first foot outer step portion 512 and the second foot outer step portion 522 becomes stronger, so that the first foot outer step portion 512 and the first foot outer step portion 512 and the first It is preferable that the joint surface of the foot outer step portion 522 is formed with an inclined surface.

The first foot outer step portion 512 and the second foot outer step portion 522 are fitted in a staggered manner, and the mounting hole 513 formed in the first foot outer convex portion 511 and the second foot outer convex portion The mounting holes 523 formed in 521 are polymerized, and as shown in FIG. 3, bolts 61a and nuts 62 are inserted and fixed.

The head of the bolt 61a is a countersunk screw and has a hexagonal hole that can be rotated by a hexagon wrench. The male screw has, for example, a pitch of about 0.5 mm.

The nut 62 is a disk having a flat head, and on the back surface of the head, a female screw into which a male screw of a bolt 61a can be screwed is screwed into an inner diameter, and a convex pillar having a substantially quadrangular cross section in outer shape. It has a part (not marked).

As a specific mounting method of the fastening portion 6, the bolt 61a is inserted into the mounting hole 513 and the mounting hole 523 from one side surface in a state where the mounting hole 514 and the mounting hole 524 are overlapped. Further, the convex pillar portion of the nut 62 is inserted into the mounting hole 513 and the mounting hole 523 from the other side surface, and the male screw of the bolt 61a and the female screw of the nut 62 are screwed and tightened and fixed.

After the first foot outer bracket 51 and the second foot outer bracket 52 are fastened by the fastening portion 6, the foot outer connecting portion 5 is rotated with respect to the sole mounting portion 2 and the lower leg mounting portion 3 by bolts 61b and 61c. Fix it impossible.

Next, the foot outer rotation restricting part 54 of the foot outer connecting part 5 will be described. The extrafoot rotation restricting unit 54 regulates the rotation range of the first extrafoot bracket 51 and the second extrafoot bracket 52 in the plantar flexion direction or the dorsiflexion direction, and rotates in the plantar flexion direction. It is composed of an external plantar flexion rotation regulating unit 541 that regulates and an external dorsiflexion rotation regulating unit 542 that regulates rotation in the dorsiflexion direction.

The foot outer plantar flexion rotation restricting portion 541 is formed on the heel side of the affected foot in the vertical direction with respect to the foot outer connection portion 53 in a state where the foot outer connection portion 5 is attached to the ankle foot orthosis 1. The foot outer screw hole 541a is composed of a pair of first foot outer protrusions 541b formed of set screws having a screw groove formed on the outer periphery thereof.

Further, the extrafoot dorsiflexion rotation restricting portion 542 is a second extrafoot screw formed in the vertical direction on the toe side of the affected foot in a state where the extrafoot connection portion 5 is attached to the ankle foot orthosis 1. A screw groove screwed into the hole 542a is composed of a pair of second out-of-foot protrusions 542b made of set screws formed on the outer periphery.

The pair of first outer foot protrusions 541b are screwed into the first outer foot screw holes 541a of the first outer foot bracket 51 and the second outer foot bracket 52 so that the tips of the first outer foot protrusions 541b face each other. As shown in FIG. 4, for example, a hexagonal wrench or the like is inserted into the first adjustment hole 541c formed on the tip end side of the first extrafoot protrusion 541b to rotate the vertical axis as a rotation axis. The amount of protrusion from the first external screw hole 541a can be freely adjusted.

Similarly, the pair of second outer foot protrusions 542b are screwed into the second outer foot screw hole 542a of the first outer foot bracket 51 and the second outer foot bracket 52 so that the tips of the second outer foot protrusions 542b face each other. A second foot external screw hole is formed by inserting, for example, a hexagonal wrench into the second adjusting hole 542c formed on the tip end side of the second foot external protrusion 542b and rotating it around the vertical axis. The amount of protrusion from 542a can be freely adjusted.

Here, in necessarily adjusting the amount of protrusion of the first protrusion 541b and the second protrusion 542b, a hexagon wrench or the like is inserted into the adjustment holes 541c and 542c formed at the tip. It is not necessary to adjust the protrusion amount by rotating the vertical shaft as a rotation shaft. For example, as shown in FIG. 4, a hexagon wrench is fitted into a hexagonal hole (not marked) formed at the rear end of the set screw, and the first foot external protrusion 541b and the second foot are fitted. The amount of protrusion may be adjusted from the rear end side of the outer protrusion 542b.

Further, the first extra-foot protrusion 541b and the second extra-foot protrusion 542b do not necessarily have to be composed of set screws. Any member may be used as long as the rotation in the plantar flexion direction and the dorsiflexion direction can be regulated and the rotation range can be freely adjusted.

In the above configuration, for example, in the acute phase of the affected foot, it is necessary to narrow the movable range of the ankle foot orthosis 1 in the plantar flexion direction and the dorsiflexion direction for the purpose of resting. In that case, as shown in FIG. 6A, by maximizing the amount of protrusion of the first extrafoot protruding portion 541b and the second extrafoot protruding portion 542b, the extrafoot connecting portion 5 is moved to the plantar flexion side. Adjust so that it does not rotate to the dorsiflexion side.

In the transition from the acute phase to the convalescent phase, the amount of protrusion of the second extrafoot protrusion 542b is reduced as shown in FIG. 6B in order to widen the range of motion of dorsiflexion. As a result, it is possible to allow movement to the dorsiflexion side while keeping the movable range on the plantar flexion side small.

When shifting from the recovery period to the life period, the amount of protrusion of the first extrafoot protrusion 541b is reduced as shown in FIG. 6 (c) in order to widen the movable range on the plantar flexion side in addition to the dorsiflexion side. This allows movement to both sides of the dorsiflexion side and the plantar flexion side.

In the above embodiment, the foot external rotation regulating unit 54 is configured to be able to regulate the rotation of both the plantar flexion side and the dorsiflexion side, but for example, depending on the condition of the affected foot. In some cases, it may be sufficient to restrict rotation in the direction of only one of the plantar flexion side and the dorsiflexion side. In that case, a foot external rotation regulating unit 54 that regulates rotation only on the plantar flexion side or that regulates rotation only on the dorsiflexion side may be adopted.

As described above, in the method for manufacturing an ankle foot orthosis to which the present invention is applied and the ankle foot orthosis, the supogenic action and the inward action of the foot can be promoted.

1 Ankle foot equipment 2 Foot sole mounting part 21 Foot mounting part 22 Foot covering part 23 First foot medial recess 24 First foot lateral recess 25 First belt body 3 Lower leg mounting part 31 Lower leg rear surface contact part 32 Lower leg Side contact part 33 Second foot medial recess 34 Second foot lateral recess 35 Second belt body 4 In-foot connection 41 First in-foot bracket 42 Second in-foot bracket 43 In-foot connection 5 Feet Outer connection part 51 First foot outer bracket 511 First foot outer convex part 512 First foot outer step part 513 Mounting hole 52 Second foot outer bracket 521 Second foot outer convex part 522 Second foot outer Step 523 Mounting hole 53 Outer foot connection part 54 Outer foot rotation regulation part 541 Outer foot flexion rotation regulation part 541a First foot outer screw hole 541b First foot outer protrusion 541c First adjustment hole 542 Outer foot dorsiflexion rotation control part 542a Second outer foot screw hole 542b Second outer foot protrusion 542c Second adjustment hole 6 Fastening part 61a, 61b, 61c Bolt 62 Nut a1, a2 Rotation shaft

Claims (8)

The sole attachment part that is attached to the sole and the sole attachment part
The lower leg attachment part to be attached to the lower leg and the lower leg attachment part
A first in-foot bracket arranged on the medial side of the sole mounting portion, a second in-foot bracket arranged on the medial side of the lower leg mounting portion, predetermined in the plantar flexion direction and the dorsiflexion direction from the reference position. An in-foot connection portion that connects the first in-foot bracket and the second in-foot bracket so as to be rotatable within a rotation range, and the bottom of the first in-foot bracket and the second in-foot bracket. An in-foot connecting portion having an in-foot rotation restricting portion that regulates a rotation range in at least one direction in the bending direction or the dorsiflexion direction,
A first outer foot bracket arranged on the lateral side of the sole mounting portion, a second outer foot bracket arranged on the lateral side of the lower leg mounting portion, predetermined in the plantar flexion direction and the dorsiflexion direction from the reference position. The foot connection portion connecting the first foot bracket and the second foot bracket so as to be rotatable within the rotation range, the bottom of the first foot bracket and the second foot bracket. An ankle foot device comprising an extrafoot connection portion having an extrafoot connection portion having an extrafoot rotation restricting portion that regulates a rotation range in at least one direction in a flexion direction or a dorsiflexion direction. The tips of the in-foot rotation restricting portion face each other when the in-foot connecting portion is in the reference position, and the first in-foot bracket, the second in-foot bracket, and the second in-foot are inward. It has a pair of in-foot protrusions that project from the bracket toward the first in-foot bracket by a predetermined amount of protrusion.
When the extrafoot connection portion is in the reference position, the tips of the extrafoot rotation restricting portion face each other, and the first extrafoot bracket, the second extrafoot bracket, and the second extrafoot outer bracket are opposed to each other. The ankle foot orthosis according to claim 1, which has a pair of extrafoot protrusions protruding from the bracket toward the first extrafoot bracket by a predetermined amount of protrusion. The inward rotation restricting portion includes an inward plantar flexion side rotation restricting portion and an inward dorsiflexion side rotation restricting portion.
The in-foot plantar flexion side rotation restricting portion is a pair of first in-foot protrusions located on the heel side of the affected foot with respect to the in-foot connection portion, and the in-foot dorsiflexion side rotation restricting portion is the foot. Includes a pair of second intrafoot protrusions located closer to the toe of the affected foot than the internal connection.
The extrafoot rotation restricting portion includes a foot lateral flexion side rotation restricting portion and a foot lateral dorsiflexion side rotation restricting portion.
The extrafoot flexion side rotation restricting portion is a pair of first extrafoot protrusions located on the heel side of the affected foot with respect to the extrafoot connection portion, and the extrafoot dorsiflexion side rotation restricting portion is the foot. Includes a pair of second extra-foot protrusions located closer to the toe of the affected foot than the external connection.
The ankle foot orthosis according to claim 2. A screw groove screwed into a screw hole formed in the first in-foot bracket and the second in-foot bracket is formed on the outer periphery of the in-foot protrusion.
The second or third aspect of the present invention, wherein the projecting portion of the foot has a screw groove formed on the outer periphery of the first foot bracket and a screw groove formed in the second foot bracket. The described ankle foot orthosis. In the connecting member for the ankle foot orthosis for connecting the sole attachment portion attached to the sole portion and the lower leg attachment portion attached to the lower leg portion constituting the ankle foot orthosis.
The first bracket and
With the second bracket
A connecting portion for connecting the first bracket and the second bracket so that the first bracket and the second bracket can rotate in a predetermined rotation range from the reference position in the plantar flexion direction and the dorsiflexion direction.
A connecting member for ankle foot orthosis, comprising a rotation restricting portion that regulates a rotation range of the first bracket and the second bracket in at least one direction in the plantar flexion direction or the dorsiflexion direction. The tip of the rotation restricting portion faces each other when the first connecting portion and the second connecting portion are in the reference position, and the first bracket to the second bracket and the second bracket The connecting member for an ankle foot orthosis according to claim 5, further comprising a pair of projecting portions projecting from the first bracket toward the first bracket with a predetermined projecting amount. The rotation restricting portion includes a plantar flexion side rotation restricting portion and a dorsiflexion side rotation restricting portion.
The plantar flexion side rotation restricting portion is a pair of first protruding portions located on the heel side of the affected foot with respect to the connecting portion, and the dorsiflexion side rotation restricting portion is on the toe side of the affected foot with respect to the connecting portion. Includes a pair of second protrusions located at
The connecting member for an ankle foot orthosis according to claim 5 or 6. The ankle foot orthosis according to claim 6 or 7, wherein the protruding portion has a screw groove formed on the outer periphery of the first bracket and a screw groove formed in the second bracket. Connecting member.

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