JP5986240B2 - Lower limb stimulator - Google Patents

Description

  The present invention relates to a lower limb stimulation apparatus capable of stimulating a knee joint and a hip joint in a supine position or a long sitting position.

  Conventionally, the present inventor has developed a lower limb vibration configured to move up and down a motion plate on which a heel portion of a sole can be placed as a health device for automatically improving so-called poor shaking. An apparatus has been proposed (see, for example, Patent Document 1).

Japanese Patent No. 5166624

  However, in the case of the above-described conventional lower limb vibration device, vibration stimulation can be applied to the hip joint by so-called poor rocking motion. Therefore, for users who cannot relax their lower limbs due to injury to the ankle joint or injury to the nearby ligaments or tendons, the sole of the sole of the sole is In a state in which the foot is always placed, the anatomical limb position (zero point) of the sole and dorsiflexion cannot be repeated, and vibration stimulation cannot be applied to the hip joint.

  For this reason, it is conceivable to apply vibration stimulation to the hip joint by placing the entire sole on the motion plate and moving the entire sole up and down. Even in such a case, the ankle joint is soft and flexible. In the case of the user, it is conceivable that the vertical movement caused by the action plate is easily absorbed by the ankle joint, and that effective vibration stimulation cannot be applied to the hip joint.

  Further, in the case of the above-described conventional leg vibration device, only the hip joint stimulation is considered, and effective vibration stimulation cannot be applied to the knee joint.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a lower limb stimulation apparatus that can apply effective stimulation to a knee joint and a hip joint.

The lower limb stimulation apparatus of the present invention for solving the above problems is provided with a pair of sliders that move up and down by driving a motor provided on a base, and the back side of the knee joint can be placed on each slider. A support plate is provided, and the support plate is provided at a lower position where the height from the base to the upper surface of the support plate is low enough to support the back side of the knee joint in the supine or long sitting position. The hip joint can be bent at the moving position, and the vertical position is between the lower moving position and the upper moving position so that the position matches the trajectory centered on the hip joint and the femur as the rotation radius. slider for is provided obliquely 5 to 10 degrees, the support plate provided to the slider, is adapted to vertically degrees 5 degrees to 10 diagonal, in upward position, the bending angle during walking hip Equivalent to The moving distance of the support plate along the slider from the setting position to the upward movement position is in the range of 6 cm to 16 cm .

In the lower limb stimulation apparatus, a slider is provided at an angle of 7.5 degrees with respect to the vertical line, and the support plate provided on the slider is configured to move up and down at an angle of 7.5 degrees with respect to the vertical line. There may be.

In the lower limb stimulation apparatus, the support plate may be 9 cm to 12 cm .

  Further, the lower limb stimulation apparatus includes a chain in which a motor provided on a base and a gear are connected by a crank, the gear can be rotated by a crank driven by the rotation of the motor, and is wound around the gear. Both ends of the gear are provided with sliders that move up and down on both sides of the gear, and each slider is provided with a support plate on which the back side of the knee joint can be placed. The knee joint placed on the support plate may be moved up and down alternately by moving up and down.

  As described above, according to the present invention, the support plate is configured to move up and down diagonally, so that the user can smoothly extend and bend the knee joint. The knee joint and the hip joint can be moved and stimulated by bending.

  Further, the lower limb stimulation apparatus of the present invention moves the support plate up and down 6 to 16 cm, and the knee joint and the hip joint are limited to about 10 to 20 degrees of flexion that moves when walking, and the range of motion is not excessively widened. Therefore, even the elderly with a hard hip joint or a rehabilitation patient after surgery can smoothly move the knee joint and the hip joint.

It is a front view which shows the outline of the whole structure of the leg stimulating device which concerns on this invention. It is a side view which shows the outline of the whole structure of the leg stimulating device which concerns on this invention. It is a side view which shows the use condition in the supine position of the leg stimulating device which concerns on this invention. It is a side view which shows the use condition in the long sitting position of the leg stimulating device which concerns on this invention. It is the schematic explaining the movable range of the hip joint by the leg stimulating device which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show a lower limb stimulation apparatus 1 according to the present invention, and FIGS. 3 and 4 show a usage state of the lower limb stimulation apparatus 1.

  In this lower limb stimulation apparatus 1, a motor 2 provided on a base 10 and a gear 3 are connected by a crank 4, and the gear 3 can be rotated by the crank 4 driven by the rotation of the motor 2. Sliders 6 are provided at both ends of the chain 5 wound around the slider 3. The sliders 6 are each provided with a support plate 7 on which the back side of the knee joint can be placed. By alternately moving up and down, the knee joint is moved up and down alternately, and the support plate 7 is provided at a lower position that can support the back side of the knee joint in the supine or long sitting position. In addition, the hip joint can be bent at the upward movement position, and is inclined up and down by 7.5 degrees with respect to the perpendicular between the downward movement position and the upward movement position.

  The board | substrate 10 is formed in the plate shape of the magnitude | size which can provide the motor 2 stably, and the motor 2 is fixed to the center part. A long plate-like frame 11 is fixed to the front of the motor 2 fixed to the base 10 so as to extend upward from the base 10. The frame 11 is reinforced by ribs 11a and is inclined by 7.5 degrees with respect to the perpendicular.

  The rotating shaft 21 of the motor 2 is projected from the back of the frame 11 to the surface of the frame 11, and the flywheel 22 is fixed to the tip portion protruding from the surface of the frame 11.

  The gear 3 includes a crank gear 31 and a rotation gear 32 that rotates by driving transmission of the crank gear 31. The crank gear 31 is rotatably fixed to the upper part of the frame 11, and a joint portion 31 a extending on the outer periphery of the crank gear 31 and the flywheel 22 of the motor 2 are connected by a crank 4. The crank gear 31 is rotated as shown by an arrow A in FIG. The rotation gear 32 is formed by integrating a small gear 32 a that meshes with the rotation gear 32 and a large gear 32 b that meshes with the chain 5, so that the small gear 32 a meshes with the crank gear 31. It is rotatably fixed to the upper part of the frame 11. Then, the rotation of the crank gear 31 that is rotated by the drive transmission of the crank 4 by the rotation of the motor 2 is transmitted to the rotation gear 32 via the small gear 32a.

  The chain 5 is bridged so that both ends thereof are located on both sides of the large gear 32b of the rotation gear 32, and the chain 5 is sent to one side by the rotation of the rotation gear 32, or the chain 5 is set to the other side. It is made to send.

  The slider 6 is fixed to both sides of the chain 5. The slider 6 can slide up and down slide guides 60 provided on both sides of the frame 11 along the frame 11.

  Thereby, when the chain 5 is sent to one side by the rotation of the rotary gear 32, the slider 6 fixed to the end of the sent one side chain 5 is lowered, and the other side When the slider 6 fixed to the end of the chain 5 is raised and the chain 5 is sent to the other side, the slider 6 fixed to the end of the other chain sent is lowered and moved to the other side. The slider 6 fixed to the end portion of the chain 5 goes up.

  From this slider 6, the support shaft 61 is horizontally extended toward both outward directions. The base end portion of the support shaft 61 is fixed to the lower end portion of the slider 6 by welding. The support plate 7 is fixed to the support shaft 61 by welding.

  The support plate 7 is configured such that an inner plate 72 is provided at one end of a support plate main body 71 formed in a circular arc shape with a length corresponding to the width of the knee joint, and an outer plate 73 is provided at the other end. . The support plate 7 is welded and fixed to the support shaft 61 such that the arc portion of the support plate main body 71 is on the top. In this state, the inner portion of the knee joint is protected by the inner plate 72 and the outer portion is protected by the outer plate 73 so that the back side of the knee joint provided on the support plate main body 71 does not fall off from the support plate main body 71. It is made to be done. Of these, the inner plate 72 is formed large because it does not interfere with the provision of the knee joint on the support plate 7, whereas the outer plate 73 can easily get over and provide the back of the knee joint on the support plate body 71. It is formed in a size that can be. Further, the outer plate 73 is welded and fixed so that its diameter increases outward as it moves away from the portion welded to the support plate body 71 so that the movement is not excessively restricted when the knee joint is moved up and down. Yes.

  The support plate 7 is in a state in which the slider 6 is in the lowest position, that is, the support shaft 61 that is welded and fixed to the slider 6 is lowest, and the support plate 7 that is welded and fixed to the support shaft 61 is lowest and lower. In the position, the height H from the base 10 to the upper surface of the support plate main body 71 is positioned in a range of 30 mm ± 15 mm, and enters the gap formed on the back side of the knee joint in the supine position or the long sitting position, The back side of the knee joint can be supported.

  Further, the support plate 7 is set so that the moving distance D from the state where the slider is most lowered to the state where the slider is most elevated is in the range of 9 cm to 12 cm.

  The lower limb stimulation apparatus 1 configured as described above is provided with a cover member 12 so as to cover the motor 2, the frame 11, the gear 3, the crank 4, the chain 5, and the slider 6. At this time, from the cover member 12, the support shaft 61 and the support plate 7 are exposed to the outside, and a slit (not shown) is formed in the cover member 12 so as not to buffer the vertical movement of the support shaft 61 and the support plate 7. Has been.

  Further, the switch 20 of the motor 2 provided at the upper end of the frame 11 is exposed on the top surface of the cover member 12, and the support plate is driven by driving the motor 2 by turning on and off the switch 20. 7 can be moved up and down alternately left and right.

  Furthermore, the cover member 12 is provided with a handle 13 used when lifting and carrying the entire lower limb stimulation apparatus 1.

  Next, a method of using the lower limb stimulation apparatus 1 configured as described above will be described.

  As shown in FIG. 3, the user 8 positions the lower limb stimulation apparatus 1 such that the back side of the knee joint when lying in the supine position is placed on the support plate 7.

  If it will be in this state, the motor 2 will be operated and exercise | movement will be started. When the motor 2 is operated, the support plate 7 moves up and down alternately left and right, and the knee joint placed on the support plate 7 moves up and down alternately, so that the bending motion of the knee joint and the hip joint is repeated alternately left and right. It will be. Therefore, the knee joint and the hip joint are stimulated by flexion, and this stimulation improves the range of motion and promotes blood circulation in the lower limbs. Further, since the lower limb stimulating apparatus 1 tilts the frame 11 with respect to the vertical line by 7.5 degrees, the support plate 7 moves up and down diagonally along the slider 6 provided on the frame 11. The diagonal up and down of the support plate 7 coincides with the trajectory when the femur is rotated around the hip joint as the rotation radius, so that the thigh is pulled or clogged with the vertical movement. Therefore, the hip joint can be flexed without difficulty.

  Further, since the support plate 7 is configured to move up and down in a range of 9 cm to 12 cm, the knee joint and the hip joint are bent at a bending angle of about 15 degrees corresponding to the bending angle of the knee joint and the hip joint during walking. Can be made. Therefore, even an elderly person whose hip joint range of motion has decreased, a patient after surgery, and the like can be bent without difficulty because the bending angle is small.

  In particular, for patients who have osteoarthritis of the hip and who have undergone Chiari pelvic osteotomy surgery, there is a gap between the femoral head and the pelvis, and the cartilage is regenerated. 1 can be continuously moved without applying any force to the hip joint, so that regeneration of cartilage can be promoted, and an excellent rehabilitation device after Chiari pelvic osteotomy can be demonstrated. Will be able to.

  Similarly, in the case of a patient who has undergone surgery on the knee joint, by using this lower limb stimulation apparatus 1, it is possible to continue to move without applying force to the knee joint, so that regeneration of cartilage is promoted. Therefore, it is possible to exert an excellent effect as a rehabilitation apparatus after knee joint surgery.

  In addition, although the case where it uses in a supine position was described in the said embodiment, as shown in FIG. 4, it can also be used in a long sitting position.

  In addition, when used in the supine position, the lower limb stimulation apparatus 1 is provided with the switch 20 on the top surface of the cover member 12, so the switch 20 must be in the supine position after the switch 20 is turned on in the long sitting position. In this case, in the case of an elderly person whose hip joint range of motion is reduced or a patient after surgery, the load is large, so the switch 20 is in the middle of a power cord (not shown) for supplying power to the motor 2 of the hip joint stimulating device 1. The switch 20 can be turned on and off in the supine position, or a cord (not shown) provided with a separate switch 20 is extended from the lower limb stimulator 1. It may be.

  As shown in FIG. 5, in the lower limb stimulation apparatus 1 according to the present invention, the inclination angle α of the frame 11 is based on the assumption that the hip joint is bent at a bending angle of 15 degrees with the femur as the rotation radius around the hip joint. It is the set angle. That is, in order to obtain a bending angle of 15 degrees corresponding to the bending angle of the hip joint during walking, the frame 11 has an inclination of 7.5 degrees, which is a half of the bending angle. However, since there are individual differences in the individual body shape of the user 8, there is no need to limit the body 11 to a frame 11 having an inclination angle α of 7.5 degrees, assuming that the hip joint is bent 15 degrees. The design may be such that the hip joint is bent by 10 degrees to 20 degrees in consideration of the width of individual differences, that is, the frame 11 may have an inclination angle α of 5 degrees to 10 degrees, which is half of that. Within this range, the hip joint can be suitably stimulated by preventing the bending angle of the hip joint from becoming excessive or insufficient.

  In addition, the support plate 7 is set to move up and down within a range of a moving distance D of 9 cm to 12 cm. This is an average femoral length L of 40 cm, which is used by children and large people. The range of 35 cm to 45 cm with a width of ± 5 cm is taken into consideration, and the femur length L is calculated by applying this to the calculation formula of D = sin (α) × L × 2.

  However, the range of the moving distance D of 9 cm to 12 cm is the result of calculation with the inclination angle α = 7.5 and L = 35 cm to 45 cm in the above formula. Therefore, as described above, the hip joint is bent by 10 to 20 degrees, that is, the inclination angle α is 5 to 10 and the femur length L is 35 cm to 45 cm and calculated by applying the above formula to D = 6 cm to 16 cm. There may be.

  Further, when the femoral length L of the user 8 is known, the dedicated hip joint stimulating device 1 may be configured by applying the above formula, or the length of the femoral length L You may comprise the several types of lower limb stimulation apparatus 1 from which the movement distance D differs for every.

  The lower limb stimulation apparatus according to the present invention is used for health promotion and rehabilitation in various usage environments in which a posture in a supine position or a long sitting position can be taken.

1 Lower limb stimulation device 10 Base 2 Motor 3 Gear 4 Crank 5 Chain 6 Slider 7 Support plate 8 User

Claims (4)

A pair of sliders that move up and down by driving a motor provided on the base are provided,
Each slider is provided with a support plate on which the back side of the knee joint can be placed.
The support plate is a downward position, the height from the base to the upper surface of the support plate is provided in an lower position where the rear side of the knee joint can be supported in the supine or long sitting position, the lower turned position and upward position The slider is provided at an angle of 5 degrees to 10 degrees with respect to the perpendicular so that the position coincides with the trajectory with the hip bone as the rotation radius centered on the hip joint, and the support provided on the slider The support plate extends along the slider from the downward movement position to the upward movement position so that the board moves up and down at an angle of 5 to 10 degrees and corresponds to the flexion angle of the hip joint when walking at the upward movement position. A lower limb stimulation apparatus characterized in that a moving distance is in a range of 6 cm to 16 cm . The lower limb stimulation apparatus according to claim 1 , wherein the slider is provided at an angle of 7.5 degrees with respect to the vertical line, and the support plate provided on the slider moves up and down at an angle of 7.5 degrees with respect to the vertical line. . The lower limb stimulation apparatus according to claim 2, wherein the support plate has a moving distance of 9 cm to 12 cm . The motor provided on the base and the gear are connected by a crank, and the gear can be rotated by the crank driven by the rotation of the motor.
At both ends of the chain wound around the gear, there are sliders located on both sides of the gear and moving up and down,
Each slider is provided with a support plate on which the back side of the knee joint can be placed.
The lower limb according to any one of claims 1 to 3, wherein the support plate is alternately moved up and down by the rotation of the gear so that the knee joint placed on the support plate is moved up and down alternately. Stimulator.

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