JP2016131797A - Knee joint stimulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lower limb stimulator capable of exerting effective stimulation on a knee joint and hip joint.SOLUTION: A knee joint stimulator 1 is arranged with a slider 5 sliding along a rail 4 arranged adjacently to a base board 2 by drive of a motor 3 arranged on the base board 2. The slider 5 includes a support plate 50 capable of placing a sole thereon. At least a part of the rail 4 is formed in a circular shape for allowing a user 7 to move a knee joint in a bending direction or extending direction without changing a position of the knee joint even when the support plate 50 placing a sole of the user 7 in an upright sitting posture slides on one side or the other side of the rail 4.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a knee joint stimulation apparatus that can stimulate a knee joint without applying its own weight.

  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 conventional lower limb vibration device, vibration stimulation can be applied to the hip joint by so-called poor rocking motion, but only the stimulation of the hip joint is considered, and effective vibration stimulation cannot be applied to the knee joint. .

  In addition, as the elderly get older, each joint of the lower limbs, such as the hip joint and knee joint, becomes harder, so it is necessary to periodically loosen each joint by exercising and massaging. In such a case, the conventional lower limb vibration device can be used for the hip joint, but there is no effective device for the knee joint.

  Therefore, it is conceivable that the knee joint is stimulated by daily walks, etc., but in this case, the knee joint is subjected to its own weight, so the elderly and disabled people have a heavy burden and should exercise. I can't. For this reason, the elderly and disabled persons need to receive regular massage at an osteopathic clinic and the like, resulting in inconveniences such as increased costs.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a knee joint stimulating device that can apply an effective stimulus to the knee joint without applying its own weight.

  The knee joint stimulating device of the present invention for solving the above problem is provided with a slider that slides along a rail provided adjacent to the base by driving a motor provided on the base. The support plate part on which the sole can be placed is provided, and the rail is supported by the user even when the support plate part on which the user's sole is placed is slid to one end side or the other end side of the rail in the end sitting position. At least part of the knee joint is formed in an arc shape so that the knee joint can be moved in the bending direction or the extension direction without changing the position of the knee joint.

  In the knee joint stimulation device, a motor provided on a base and a slider sliding on a rail provided adjacent to the base are connected by a crank, and the slider is driven by a crank driven by the rotation of the motor. It is designed to move horizontally along the rail, and the connecting parts of the crankshafts that constitute the crank and / or the connecting part of the crankshaft and the slider follow the change in angle when the slider slides on the arc of the rail. It may be connected with a ball joint so as to be able to.

  The knee joint stimulating device is configured such that the lower leg of the user who puts the sole on the support plate portion is in the internal rotation direction or the external rotation direction with respect to the shaft portion provided on the support plate portion or the slider. It may be connected on a slider so that it can be rotated.

  In the knee joint stimulating device, the slider may be provided with a regulating member capable of adjusting the degree of rotation of the support plate portion, and the degree of rotation of the support plate portion may be adjusted by the regulation member. .

  As described above, according to the present invention, since the arc part having the radius of curvature from the knee joint to the sole is formed at least in a part of the rail, the user can support the slider provided on the slider. It is possible to smoothly extend and bend the knee joint while the sole in the end sitting position is placed on the support plate, regardless of whether the plate is on the one end side or the other end side. By flexing, the knee joint can be moved and stimulated.

  In addition, the knee joint stimulation by the knee joint stimulation device of the present invention is performed by performing a passive movement by placing the lower part on the support plate from the knee joint in the end-sitting position. Since the weight is not added to the knee joint, the knee joint can be smoothly transferred and moved even by an elderly person who has a hard hip joint or a rehabilitation patient after surgery.

  Furthermore, with respect to the shaft provided on the support plate or slider, the user's lower leg with the support plate placed on the support plate can be rotated in the internal rotation direction or the external rotation direction. In addition, by connecting on the slider, even a user who has wrinkles in the movement of the knee joint can rotate the knee joint inward or outward according to the wrinkle. Can be extended and bent. In addition, by adjusting the rotation state of the support plate portion by the regulating member provided on the slider, the rotation state of the support plate portion can be adjusted so that the support plate portion does not move freely due to the movement of the slider. The movement of the knee joint of the user can be adjusted without excessively rotating the knee joint inward or outward.

It is a top view which shows the outline of the whole structure of the knee joint stimulating device which concerns on this invention. It is a side view which shows the outline of the whole structure of the knee joint stimulating device which concerns on this invention. It is a rear view which shows the outline of the whole structure of the knee joint stimulating device which concerns on this invention. It is a side view which shows the use condition of the knee joint stimulating device which concerns on this invention. It is a side view which shows the use condition of the knee joint stimulating device of other embodiment which concerns on this invention. It is sectional drawing and the top view of the slider part which show other embodiment of the knee joint stimulating device which concerns on this invention.

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

  1 to 3 show a knee joint stimulating apparatus 1 according to the present invention, and FIG. 4 shows a use state of the knee joint stimulating apparatus 1.

  The knee joint stimulating apparatus 1 includes a motor 3 provided on a base 2 and a slider 5 that slides along a rail 4 provided adjacent to the base 2 and is connected by a crank 6. 5 is provided with a support plate portion 50 on which the sole can be placed, and a part of the rail 4 is formed in an arc shape.

  The board | substrate 2 is formed in the plate shape of the magnitude | size which can provide the motor 3 stably, and the motor 3 is fixed to the center part. The rail 4 is fixed so as to be adjacent to one side of the base 2. Legs 21 protrude from the remaining three sides of the base 2, and the base 2 is supported by the legs 21, so that a rotating shaft 31 of the motor 3 protrudes below the base 2 and cranks Space enough to drive 6 is secured.

  The rotating shaft 31 of the motor 3 penetrates the base 2 and protrudes below the base 2, and one end of a crankshaft 61 is fixed to the rotating shaft 31 protruding below the base 2. ing.

  The rail 4 is composed of a pair of parallel round bars, and both ends of the rail 4 are supported and fixed so as to maintain the parallel state of the rail 4 by support legs 41 and 42 arranged in a direction perpendicular to the rail 4. Has been. As shown in FIG. 2, one support leg 41 is provided along one side of the base 2, and the rail 4 is fixed adjacent to the base 2. Further, in this state, the rail 4 extends horizontally from the other support leg 42 to the center, and is curved and formed in an arc shape from the center to the one support leg 41, and is about 5 to 10 cm from the horizontal portion. It is bent upward so as to be higher. The length of the rail 4 is about 60 cm. Among them, the slider 5 described later is slidable over a range of about 25 cm, which is a range until it comes into contact with the stoppers 43 provided near both ends of the rail 4. ing.

  The slider 5 is a pulley 52 having a semicircular groove portion that matches the interval of the rail 4 and matches the round bar constituting the rail 4 on the lower surface of the base 51 sized to be able to span the interval of the rail 4. A stopper 53 for preventing the pulley 52 from coming off the rail 4 is provided at a portion facing the pulley 52 with the rail 4 interposed therebetween. Abutting pieces 54 that can be elastically contacted with the stopper 43 of the rail 4 by the urging force of the spring are provided on both sides of the pulley 52 along the sliding direction from the stopper 53. The slider 5 can be slid on the rail 4 in a range until it is brought into contact with the four stoppers 43. On the base 51 of the slider 5, a support plate portion 50 formed in a plate shape on which a sole can be placed is provided.

  As shown in FIG. 4, the support plate 50 is horizontal on the other end side of the rail 4, and tilts while rising along the curvature of the rail 4 as it moves to one end. It becomes. As a result, at the other end of the rail 4, the user who has placed the sole on the support plate 50 in the 90-degree end sitting position can move the support plate 50 to one end of the rail 4. The sole can be kept on the support plate 50 in accordance with the locus of the sole when the knee joint of the user is extended and bent. Therefore, the sliding movement of the support plate part 50 on the rail 4 can be matched with the locus of the sole of the foot when the knee joint is extended and bent.

  Since the length of the lower leg varies depending on the person, the user slides the support plate 50 on the rail 4 strictly in accordance with the locus of the sole of the knee joint during extension and flexion. Although it is considered impossible to do so, usually, when the support plate portion 50 on which the sole is placed is slid on the rail 4, the ankle joint naturally follows the movement of the support plate portion 50. Even if there is a slight difference in physique, in the limited slide movement range, the shape of the rail 4 extends horizontally from the other support leg 42 to the center as described above. The support plate portion 50 can be used by the user if the shape from the center to one of the support legs 41 is curved in an arc shape and bent upward so as to be about 5 to 10 cm higher than the horizontal portion. The movement of the sole of the foot during knee extension and flexion It can be made to follow the easy. The range of slide movement by the support plate 50 is 5 cm to 30 cm, more preferably 10 cm to 25 cm, and still more preferably 15 cm to 20 cm.

  When the range of slide movement is less than 5 cm, the knee joint cannot be fully extended and bent, so that effective stimulation cannot be obtained for the knee joint. If the designed device is not used, the knee joint cannot be extended and bent, and the position of the knee joint cannot be stabilized. As an indication of the range of the slide movement, it is preferable that the angle change is equal to or less than about 15 degrees corresponding to the angle change of the knee joint during walking. In the case of this example, in order to obtain an angle change corresponding to the angle change of the knee joint during walking, it is extended from 90 degrees end sitting position to 105 degrees, bent to 90 degrees end sitting position, and then It is preferable to obtain an operation angle α so that an operation of repeating extension and bending can be obtained.

  Of course, as shown in FIG. 5, the operating angle α may be obtained by operating to extend and bend by 7.5 degrees around the 90-degree end sitting position. However, in this case, in order to match the slide movement of the support plate portion 50 with the trajectory at the time of extension and bending of the knee joint, the rail 4 is formed in an arc shape from the center toward both ends, It is preferable to use one that is bent upward so that both ends are positioned higher than the center. In this case, if it is curved in an arc shape so that both ends are higher than the center by about 2.5 cm to 5 cm, it can be supported even if there is a slight difference in physique within the range of slide movement of 5 cm to 30 cm. The plate portion 50 can easily follow the movement of the sole of the user when the knee joint is extended and bent. As a guideline, the arc-shaped curve of the rail 4 is a curve formed so as to produce a height difference of about 1 cm to 2 cm every 3 degrees of change in the operating angle α.

  The crank 6 is composed of a pair of crank shafts 61 and 62 whose ends are rotatably connected. Among these, the short crankshaft 61 has one end fixed to the rotating shaft 31 of the motor 3 and the other end connected to one end of the long crankshaft 62. The other end of the long crankshaft 62 is connected to the back surface of the base 51 of the slider 5. In the crank 6, the rotation of the rotating shaft 31 of the motor 3 is transmitted to the long crankshaft 62 via a short crankshaft 61 that rotates together with the rotating shaft 31, and the long crankshaft 62 is transmitted to the rail 4. The slider 5 is converted into a reciprocating motion. Note that when the slider 5 reciprocates, the slider 5 does not simply reciprocate in the horizontal direction, but slides along the rail 4 curved in an arc shape. Is not constant. Therefore, the connecting portion between the crankshaft 61 and the crankshaft 62 and the connection between the crankshaft 62 and the back surface of the base 51 of the slider 5 so that the crankshaft 62 can follow the position of the slider 5 and transmit the driving force. The parts are connected by a ball joint 63. When the change in the position of the slider 5 is small, the ball joint 63 has either a connection portion between the crankshaft 61 and the crankshaft 62 or a connection portion between the crankshaft 62 and the back surface of the base 51 of the slider 5. It may be only.

  In the knee joint stimulating apparatus 1 configured as described above, the power source of the motor 3 is connected to an outlet (not shown) and the main switch 32 of the motor 3 is turned on, and then the start switch 33 extended from the motor 3 is connected. By driving the motor 3 by turning on and off (see FIG. 4), the slider 5 can be slid along the rail 4 via the crank 6.

  Next, a method of using the knee joint stimulating apparatus 1 configured as described above will be described.

  As shown in FIG. 4, the user 7 places the sole on the other end portion of the rail 4 of the knee joint stimulating device 1 so that the sole is placed on the support plate portion 50 of the slider 5 in the 90-degree end sitting position. The chair 8 of the user 7 is positioned.

  In this state, the motor 3 is actuated to start exercise. When the motor 3 is operated, the slider 5 slides along the rail 4 via the crank 6, and the slider 5 located on the other end side of the rail 4 moves to one end side of the rail 4. It moves, and it moves from one end side to the other end side, and this operation is repeated after that. As a result, the sole that has been placed on the support plate portion 50 of the slider 5 follows the movement of the slider 5, and the sole of the user 7 extends the knee joint from the 90-degree end sitting position. After extending the operating angle α, the knee joint is bent to the original 90 ° end sitting position, and thereafter, the knee joint is stimulated by repeating the extension and the bending to repeat the extension and the bending of the knee joint.

  At this time, since the rail 4 is horizontal on the other end side and is formed in an arc shape that rises as it moves to one end portion, the support plate portion of the slider 5 that slides on the rail 4 50 can be matched to the locus of the sole of the knee when the knee joint of the user 7 is extended and bent, and the knee joint can be smoothly extended and bent.

  Further, since the slider 5 can be slid using a rail 4 formed in a predetermined arc shape within a limited sliding movement range, the slider 5 can be supported even if there is a slight difference in physique. The plate part 50 can be used by easily following the movement of the sole of the user when the knee joint is extended and bent.

  Further, the knee joint stimulation by the knee joint stimulating device 1 is performed by carrying out a passive movement by placing the lower part from the knee joint on the support plate 50 in the end-sitting position, and is used during walking. The total weight of the person 7 is not added to the knee joint. Therefore, even a senior citizen who has a hard hip joint, a rehabilitation patient after surgery, a patient with osteoarthritis of the knee, etc. can smoothly move the knee joint in a passive manner.

  Furthermore, since the passive movement by the motor 3 can be made a passive movement with a constant rhythm, a massage effect can be expected.

  The motor 3 is provided with a volume switch (not shown) for controlling the rotation of the motor 3 in place of the start switch 33 at hand so as to control the rhythm of the reciprocating motion on the rail 4 by the slider 5. It may be.

  In the case of the knee joint stimulating apparatus 1 shown in FIG. 5, the same operational effects as those of the knee joint stimulating apparatus 1 shown in FIG. 4 can be obtained only by changing the operating angle α from the 90 ° end sitting position.

  FIG. 6 shows another embodiment of the slider 5. That is, in the slider 5, a shaft portion 50 a extending from the center of the lower surface of the support plate portion 50 is inserted into a hole portion 51 a provided in the base 51. The support plate portion 50 is pivotally attached to the base 51 so as to be rotatable on the base 51 via a sliding member 55 such as a slide washer or a bearing around the shaft portion 50a. The range in which the support plate portion 50 rotates on the base 51 is a range in which the lower leg of the user 7 with the sole placed on the support plate portion 50 can rotate in the internal rotation direction or the external rotation direction. If there is, it will not be specifically limited. For example, if the anatomical limb position is 0 degrees as a general rotation range, there is no problem if a range of about 10 degrees in the internal rotation direction and about 20 degrees in the external rotation direction is secured. It is sufficient to set a range in which the user can be rotated about 30 degrees in the internal rotation direction and the external rotation direction, including the case where the user 7 of the knee joint is using.

  In order to restrict the rotation range, the base 51 is provided with an arc-shaped slit 51b having a predetermined central angle θ centered on the shaft portion 50a, and the slit 51b extends from the lower surface of the support plate portion 50. It can be configured by inserting the regulating piece 50b. In the case of this configuration, the restriction piece 50b can move around the shaft portion 50a within the range of the slit 51b. For example, when the state in which the user 7 places the sole on the support plate portion 50 on the base 51 along the sliding direction of the slider 5 is the position of the anatomical limb position (0 degree), If the slit 51b is provided in the range of the central angle θ of about 30 degrees in each of the internal rotation direction and the external rotation direction, the support plate part 50 is positioned from the position of the anatomical limb position (0 degree). It can be rotated only in the range of about 30 degrees in the internal rotation direction of the lower leg and about 30 degrees in the external rotation direction.

  According to this configuration, even when the movement of the knee joint of the user 7 has a heel, the user's lower leg is slid and moved while rotating the knee joint inward or outward according to the heel. The knee joint can be smoothly extended and bent.

  In the case of this configuration, the support plate portion 50 is arbitrarily rotated by the movement of the slider 5 when reciprocating, and the knee joint of the user 7 placed on the support plate portion 50 excessively rotates inward or outward. There is a concern that Therefore, a regulating member 9 such as a spring or an oil damper is provided between the support plate portion 50 of the slider 5 and the mounting portions 50c, 51c provided on the base 51, so that the user's 7 lower leg placed on the support plate portion 50 has an internal rotation. In addition, the anatomical limb position (0 degree) is not maintained, and the rotation state of the support plate 50 can be adjusted by the restriction member 9. Also good. In this case, the support plate portion 50 is moved freely by the movement of the slider 5, and the knee joint of the user 7 placed on the support plate portion 50 is not excessively or internally rotated. The knee joint can be extended and bent while matching the movement of the seven knee joints. In the present embodiment, the rotation range of the support plate portion 50 is limited by inserting the restriction piece 50b of the support plate portion 50 into the slit 51b provided in the base 51. When an oil damper having a fixed stroke is used as the restricting member 9, the rotation range of the support plate portion 50 can be limited by the oil damper, so that the slit 51b and the restricting piece 50b can be omitted.

  The support plate portion 50 has a shaft portion 50a extending from the center of the lower surface, and the shaft portion is formed on a portion corresponding to a heel portion of the foot or a mother-child ball with the sole placed on the support plate portion 50. 50a may be extended and may be configured to rotate about the shaft portion 50a.

DESCRIPTION OF SYMBOLS 1 Knee-joint stimulating device 2 Base 3 Motor 4 Rail 5 Slider 50 Support plate part 50a Shaft part 55 Restriction member 6 Crank 61 Crankshaft 62 Crankshaft 63 Ball joint 7 User

Knee stimulator of the present invention for solving the above problems, a motor provided on a substrate, between the slider to slide rails provided adjacent to the foundation, connected by a crank, a motor made by a crank driven by the rotation so the slider is horizontal motion along the rail, the slider, the support plate portion is provided sole is formed can be placed plate, rail, 90 end In the sitting position, a horizontal portion for placing the user's sole on the support plate portion provided on the slider that slides on the rail, and a curved shape formed in an arc from the horizontal portion to one side, move the knee joint in the extending direction. A horizontal portion for placing the user's sole on the support plate portion in a 90-degree end sitting position, and a horizontal portion Curved from one part to the other In the position where the knee joint is moved in the extension direction, a portion where the user's sole is placed on the support plate portion and a curved portion formed in an arc from the horizontal portion to the other are formed, and the knee joint is moved in the bending direction. The support plate portion on which the user's sole is placed on the support plate portion is placed on one end side of the rail or on one end. One end of the arc portion of the rail so that the knee joint can be moved in the bending direction , or the bending direction and the extension direction without changing the position of the user's knee joint, even if sliding to the side and the other end side. The side is curved and formed to be 5 to 10 cm higher than the horizontal part, or one end side and the other end side of the arc part of the rail are curved and formed to be 2.5 to 5 cm higher than the horizontal part , Support that placed the user's sole in the 90-degree end position When the slider provided with the section moves horizontally along the rail, the angle change of the knee joint of the user extends and bends within a range of 15 degrees or less from the 90-degree end sitting position to the extension direction, or the 90-degree end It can be extended and bent within a range of 7.5 degrees or less from the sitting position in the extension direction and the bending direction, and the connecting part between the crankshafts constituting the crank and / or the connecting part between the crankshaft and the slider is a rail. A ball joint so that the slider can follow the angle change of the knee joint when the slider slides from the horizontal part of the rail to the arc part of the one end side or from the horizontal part of the rail to the arc part of the one end side and the other end side. It is connected with .

In the above knee joint stimulating device , the slider is provided with a support plate portion on the base, a shaft portion provided at the center of the lower surface of the support plate portion is inserted into a hole provided in the base, and the support plate portion is The user's lower leg with the sole placed on the support plate is pivotally attached to the base via a sliding member provided on the shaft so that the user's lower leg can rotate in the internal or external rotation direction. May be.

In the above knee joint stimulating device , the base is provided with an arc-shaped slit having a predetermined central angle centered on the shaft portion, and a regulating piece inserted into the slit is extended on the lower surface of the support plate portion. The restriction piece may move around the shaft portion within the range of the slit so that the rotation state of the support plate portion can be adjusted .

The knee joint stimulating device is a regulation that can adjust the degree of rotation of the support plate portion between the support plate portion and the mounting portion provided on the base at a position where the support plate portion is provided on the base along the sliding direction of the slider. A member may be provided so that the degree of rotation of the support plate portion with respect to the base can be adjusted by the restriction member .

DESCRIPTION OF SYMBOLS 1 Knee joint stimulator 2 Base 3 Motor 4 Rail 5 Slider 50 Support plate part 50a Shaft part 55 Sliding member 6 Crank 61 Crankshaft 62 Crankshaft 63 Ball joint 7 User
9 Regulatory members

Claims (4)

A slider that slides along a rail provided adjacent to the base is provided by driving a motor provided on the base,
The slider is provided with a support plate portion on which the sole can be placed,
The rail is bent in the bending direction or without changing the position of the user's knee joint even if the support plate portion on which the user's sole is placed in the end sitting position slides to one end side or the other end side of the rail. A knee joint stimulating device characterized in that at least a part thereof is formed in an arc shape so as to be movable in the extending direction. The motor provided on the base and the slider sliding on the rail provided adjacent to the base are connected by a crank, and the slider moves horizontally along the rail by the crank driven by the rotation of the motor. Made as
The connecting portions between the crankshafts constituting the crank and / or the connecting portion between the crankshaft and the slider are connected by a ball joint so as to follow the change in angle when the slider slides on the arc portion of the rail. Item 2. The knee joint stimulator according to Item 1.   With respect to the shaft portion provided on the support plate portion or the slider, the support plate portion is configured so that the user's lower leg with the sole placed on the support plate portion can rotate in the internal rotation direction or the external rotation direction. The knee joint stimulating device according to claim 1, wherein the knee joint stimulating device is connected on a slider.   The knee joint stimulating device according to claim 3, wherein the slider is provided with a regulating member capable of adjusting a degree of rotation of the support plate portion, and the degree of rotation of the support plate portion can be adjusted by the regulating member.

Images