JPS58198344A - Electromotive foot joint excerciser - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric ankle joint exerciser used for functional recovery, training, etc. of the ankle joints of humans who have motor paralysis due to symptoms such as stroke hemiplegia.

Traditionally, many patients with hemiplegia due to stroke have physical and mental dysfunction, and the treatment for this is complicated, but the characteristically most common symptom is ankle inversion. Due to this deformity, the appearance of this condition paralyzed the movement of the ankle joints, making it impossible for him to walk using his own blades.

Currently, this functional rehabilitation training is being carried out by medical professionals such as physical therapists to loosen and stretch the abnormal muscle tension of the Do-sanjun muscle, which is the cause of varus deformity, and to correct the stretching of the foot MjlD in a dorsiflexed position. A manual treatment method is used to suppress abnormal muscle tension by manually holding the Achilles' spell in extension several times to promote flexion.

However, with manual treatment methods, it is cumbersome to continue treatment for a long period of time, and there are many constraints such as treatment time and consistency, so to solve this problem, there is a device that can automatically perform treatment etc. etc. was hoped for.

This invention has been made to solve the above-mentioned problems, and includes a sole plate that is connected to a support for the underlined part of the human body and supports the heel and sole of the ankle joint related to the drive mechanism. It is an object of the present invention to provide an electric ankle joint exerciser that can correct and treat varus deformity and the like by applying appropriate exercise force to the ankle joint of the therapist.

In order to achieve the purpose of visiting the country, this invention has an underlined part holding stand which has means for attaching it to Ii (Ii), and has a displacement part so that the top surface thereof can be adjusted up and down. A side-shaped abbreviated type that supports the heel and the sole of the foot on the ankle rotation axis of the driving table, which is located on one side of the holding table and is positioned so as to match or approximate the physiological joint axis of the therapist. The gist of the present invention is that a sole plate made of a plate is installed so as to be able to rotate in one direction, and that the sole plate is connected to a driving means so as to be able to rotate at a specific angle.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure WA1 shows the automatic ankle joint exerciser according to this invention in a state where the lower leg and toe portion of the therapist are attached.
When mounted on the exercise equipment, it is usually worn with the ankle joint in one rotational axis so that the muscle tension of the biceps surae, which is the posterior muscle of the lower leg, is relaxed.

As shown in the figure, the electric ankle exerciser according to the present invention has a fixed bar l that can be attached to a bed.
An upper leg holding stand 2 attached to a III steel surface and formed to hold the lower leg of a human body, and this holding stand 2 (7)
tiir /i to drive unit connecting rod 3 and connecting rod fixing screw 4
Basically, the driving body 7 has a driving unit identification band 5 on both sides and has a fixed frame 6d for a sole plate O supporting the heel and the sole of the foot. The ankle joint part 8b of the human body on the plantar plate 6 is flexed and 11
It has a uniaxial mechanical joint, ie, an ankle joint rotation axis 9, so as to rotate in the direction of reach.

This ankle joint 1 axis of rotation 9 is located at the tip of the external jaw of the ankle joint and the lower end of the internal tibia so that it is located at a point that coincides with or approximates the physiological joint axis of the ankle joint part 8b of the human body, J6 (f = J-shaped dorsal leg fixing bell) 10, foot dorsal fixing belt 11. Forefoot fixation bell) 12
It is designed to allow natural dorsiflexion of the foot joint 8b of the lower limb of the human body held by the foot.

Further, the movement is driven by the operation of a motor 13 as shown in FIG.
The sole plate 6 fixed by the sole plate fixing frame 6a is moved up and down by driving the sole plate drive rack 16 controlled by the overspeed movement stop switch 15 etc. In this case, the sole plate 6 and the ankle rotation axis 9 operate in unison. An angle sensor 25 coaxial with the ankle rotation axis 9 is installed.

In addition, in order to eliminate inconveniences such as the ankle joint rotation axis 9 and the physiological joint axis of the patient's joints not matching or reaching a similar point due to the shape of the patient's lower axis 8d or toe portion 8C, etc. ,
On the sole fi6, the toe part 8C, which has been used for various treatments, is placed, and the ankle rotation axis 17 is placed so that the physiological joint axis of the first leg 47 can be placed on the ankle rotation axis 9. is provided on the bottom surface of the rubber 17, and can be bent as appropriate depending on the thickness, number, etc. of the rubber 17.

Historically, the lower part holding stand 2 has, as shown in FIG.
While observing the patient's limb holding position held by the lower leg adjustment hole 18, adjust the lower leg holding knob lL.
: Using J, upper φF and m3 sections can be created in 3 stages.
The patient's physiological joint axis is made to match or approximate the ankle joint U rotation axis 9 described in iii.

In this way, a multi-layer structure is constructed by connecting the supporting base 2 and the driving body 7 which pivotally supports the fixed frame 6a of the footrest.
The tortoise ankle joint motion system according to this invention is as follows: 1. As mentioned above, K j
Since it is used for medical treatment, it is generally used with the attachment fixed to the small pet b at the 4th IA.

Next, an operation system for operating the interlocking device according to the present invention according to the pathological condition will be explained.

As shown in Fig. 5, the 41F+ lineage Hinoki is &I
J-value Hox (in consideration of foot dorsiflexion, plantar movement, joint opening, and counterconversion), the dorsiflexion angle adjuster 20 and the plantarflexion angle Md l
The set values for u if yu 21 are set to a height of 1111, 3oJX, and a low flexion angle of 60 degrees, based on the range of motion of the ankle joints of a normal person.

In addition, this angle adjustment takes into consideration detailed movements for the safety of bones and soft tissues related to human foot joints, and allows the joint angle to be increased or decreased at intervals of 2.5 degrees.

In addition, if we consider from a neurophysiological perspective the abnormal muscle tone that is most necessary for stroke hemiplegia, we can see that the abnormal muscle tone that is most necessary for stroke hemiplegia is that the ankle varus deformity is added to the stationary maintenance of the foot posture and extension movement. Both the foot dorsiflexion rest time and the plantar flexion rest time in the dorsiflexion rest adjuster 22 and the plantar flexion rest adjuster 22 are set to between 0 and 30 seconds so that the extension movable rest time can be adjusted according to the degree of tension. This makes it possible to increase the pause time to +Eff1O.

Furthermore, in order to objectively evaluate the degree of abnormal muscle tension, the display board 28a of the paralyzed ankle muscle tension resistance that occurs during exercise can be detected and the degree of abnormal muscle tension can be confirmed. At the same time, if the overload detection unit 31 detects that the therapist's foot joint muscle tension resistance value is large and the exercise is overloaded, a signal is sent to the control unit η, and the exercise stop switch 15 is activated. After activating and temporarily stopping the linkage, set an appropriate extension uI# and stationary holding time, and set an appropriate joint angle to suppress the extension of abnormal muscle tension.
It is possible to detect t+m degrees and its effects.

Note that the above-mentioned operating system according to the present invention has the following adjustment functions from the viewpoint of safety, which increases its practical value.

The joint angle adjustment of the mountain part is &II function.

+21 @mJt moves once and takes 55as/sec
It has a relatively slow speed, and is set at four speeds so as not to irritate the muscles and legs.

'Yafil M's passenger capacity is 300jlF/cIm, and if it exceeds this, an emergency stop will occur automatically with the activation of the emergency stop switch J2.

(41) When the therapist feels pain in his or her lower limbs for some reason, he or she can immediately stop the exercise by switching the emergency stop switch to the emergency stop switch 32 in the control box C or the continuous exercise stop switch. 15 and can be equipped for emergency use.

(5) When the angle delk structure 20, 21, 22, 23 etc. malfunction or excessive movement occurs, the control box C
The internal movement stop switch 15 is activated,
Accidents can be prevented.

The operation in the above-mentioned operation system is performed by controlling the control box C as shown in the panel diagram and system diagram shown in FIGS. 5 and 6.
Dorsiflexion angle adjustment 20a and plantarflexion angle adjustment 21a are performed using the dorsiflexion angle adjuster 21, and when each interlocking angle is set and the activation switch is pressed, the ankle joint rotation axis moves in the dorsal direction. 9 rotates, the sole plate 6 begins to move, and the coaxially fixed rotation angle sensor δ rotates.

The number of movements is recorded on the display board grave.

As a result, the signals from the dorsiflexion angle adjuster and the rotation angle sensor δ are taken into the comparator circuit, and when the id l level (*pressure) matches, the control unit (sequencer) 27
(Send No. 1 to stop the rotation of the secret motor 13.

At the same time, a dorsiflexion pause timer n measures time, and when the set time is reached, the dorsiflexion pause timer n begins to move in the plantarflexion direction.

The above operations are repeated, and when the treatment time set in the treatment time setting timer is reached, the drive system stops, the movement angle becomes zero, the buzzer sounds, and all operations stop. In the figure, the symbol indicates a stop switch.

The electric ankle joint exerciser according to the present invention is constructed as described above, and is connected to the secretion system so that its rotational axis coincides with or approximates the physiological joint axis of the therapist's ankle joint, that is, the human body. Move upward (dorsiflexed position) and downward (plantar flexed position) through the foot 1f&, which is set up as shown in the figure. It is connected to an operating system that includes a built-in exercise load detector that measures the tensile resistance value of the lower limb and ankle joint muscles of the therapist, which sometimes occurs in patients with hemiplegia due to hemiplegia. It is ideal for functional recovery and treatment.

That is, in order to be suitable for the treatment of deformed feet such as foot varus in patients with hemiplegia due to stroke, etc., the therapist's foot movements are repeatedly extended, moved, and held stationary so as to expand the range of motion, and the ankle joint is It also takes into account the neurophysiological effect of suppressing abnormal muscle tone in key muscles, which corresponds to the pathology of stroke.

In addition, compared to the conventional manual adjustment by medical personnel, the corrected limb position is constant, the fixation effect is reliable, and the movement speed (the time required for one movement, 551Ia/
It is also possible to set the PJT (see) and movement force (30 (lp/cIM) in the same way as manually, and it is also possible to automatically adjust the PJT desired value according to the disease state, and to adjust the number of exercises necessary for treatment and the appropriate This has the advantage that it is easy to set appropriate treatment times.

In addition, the electric interfoot Da motor of the present invention effectively acts on patients with ankle contractures, etc., in patients with orthopedic diseases, etc., other than stroke patients with hemiplegia. By changing or adding the number of motors, movement mechanisms, etc., it can be used not only for treating the ankle joints of the human body, but also for treating eyebrows, B=1, wrist joints, hips, hip joints, etc. .

[Brief Description of the Drawings] Fig. 1 shows a state in which the lower leg and foot of a human lower limb are attached to the electric ankle joint exerciser according to the present invention.
・A side view, FIG. 2 is a side view showing the drive mechanism of the drive device according to the present invention, FIG. 3 is a side view of the lower leg cloth holder according to the present invention, and FIG. FIG. 5 is a front panel view of the control box of the electric ankle joint exerciser according to the present invention, and FIG. ,,J *Panel diagram, 7th
The figure is an operation system diagram of the electric leg 1I41flJ exercise equipment according to the present invention. 2...-Toko part holding stand, 6... Sole plate, 7... Driving body, 9... Foot seal M rotation axis, 25... Angle sensor. Patent Applicant: Sanyo Electronics Industry Co., Ltd. Morinaka
Yoshihiro

Claims (1)

[Claims] It has means for attaching to the bed, and its upper surface is in the vertical position 11.
It has an underlined part holder having a displacement part so that it can be articulated, and is located on the curved edge of the holder so that it can be positioned to coincide with or approximate the physiological joint axis of the therapist. At the first rotation axis of the ankle joint of the rainbow platform, a sole plate consisting of a plate with a side abbreviated shape that supports the heel and the sole of the foot is rotatably installed, and the sole plate can be rotated at a specific angle. An electric ankle movement device characterized by being connected to a secretive means.