JP4682018B2 - Joint support orthosis - Google Patents

Description

  The present invention relates to a joint support device used for joint portions such as knees, elbows, fingers, ankles and wrists.

The inventor of the present invention has a gear support structure for a joint support device that is easy to wear and can be seated even when worn, and in particular, the upper arm and the lower arm can be interlocked with each other by adopting a gear structure. Have already been proposed that smooth movement is possible (Patent Document 1).
In addition, the actual joint is an oval spherical joint, and its fulcrum moves in an arc as the knee bends. That is, it shifts downward so as to draw an arc from the center of the knee. Therefore, it is difficult to simulate the movement of the knee joint with one axis, and the multi-axis joint can move closer to the knee joint. In Patent Document 1, it is proposed that a predetermined interval is provided between the pivot support portion of the upper arm and the pivot support portion of the lower arm so as to eliminate the feeling of pressure due to this angle shift and to make the bending and stretching smooth. .
Patent No. 2903509 (paragraph number (0052), FIG. 6)

  However, if the shaft support part of the upper arm and the lower arm has a gear structure, and further provided with a predetermined interval between the shaft support part of the upper arm and the shaft support part of the lower arm, the gear diameter becomes large, There are problems that the appearance looks worse, the brace becomes heavier, and further, the user feels uncomfortable.

Therefore, an object of the present invention is to provide a joint support device that eliminates a sense of incongruity at the time of wearing, enhances the fit to the body, and does not cause a wearing deviation.
In particular, the present invention provides a joint support device that is provided with a predetermined interval between the pivot support portion of one arm and the pivot support portion of the other arm and that can interlock the one arm and the other arm. Objective.

The joint support device according to the first aspect of the present invention includes a support plate disposed on each side of the joint, and each first arm provided with a shaft serving as a rotation fulcrum on one end side of the support plate. includes each of a second arm axis serving as the rotation fulcrum at the other end of the support plate is provided, and a connecting member for connecting the said support plate, said connecting member is a knee at the time of mounting of so as to be positioned on the rear side, each of said support plate a support joints supporting brace at regular intervals, in the Kaido支point of the first arm first driving gear is formed the transfer unit is provided, between said in the Kaido支point of the second arm is provided a second power transmitter which gear is formed, said first drive transmitting portion and said second drive transmitting portion a third drive transmitting portion gear is formed is provided on, the third drive transmission unit Serial gear and meshing with said gear of said first drive transmitting portion, the third is between the gear of the drive transmission unit to engage with said gear of said second drive transmitting portion, the first The arm and the second arm are interlocked, and the third drive transmission unit is configured by an even number of gears .
According to a second aspect of the invention, the joint support brace of claim 1, the support plate constitutes a sector-shaped plate member formed of circularly arcuate portion having a predetermined width, and the rotation fulcrum of said first arm It said shaft and said and said shaft to be the pivot point of the second arm, before Symbol and said shaft of said gear constituting a third drive transmitting portion, the same circle as the circular arc portion of the support plate comprising It is arranged in an arc shape.

  According to the present invention, the movement of the knee joint can be simulated by providing a predetermined distance between the pivot support portion of the first arm and the pivot support portion of the second arm, and one arm and the other arm can be simulated. In particular, the abnormal bending and stretching movements of the ligament injured person can be corrected.

Joint support orthosis according to a first embodiment of the present invention, the Kaido支point of the first arm is provided a first drive transmission portion which gear is formed, the Kaido支point of the second arm the second drive transmitting portion is provided the gear is formed, a first drive transmitting portion is provided between the second drive transmitting portion is provided a third drive transmission section gear is formed, the third engagement gear of the drive transmission part and a wheel of the first drive transmitting part, by engaging the gear of the third drive transmission portion and the gear of the second drive transmitting portion, a first arm second The third drive transmission unit is configured by an even number of gears . According to the present embodiment, the third drive transmission unit is provided between the first drive transmission unit and the second drive transmission unit, so that the support plate is not configured to be large and the first arm A predetermined distance can be provided between the shaft support portion and the shaft support portion of the second arm, and one arm and the other arm can be linked.
According to a second embodiment of the present invention, in the joint support device according to the first embodiment, the support plate is configured by a substantially fan-shaped plate material having an arc portion having a predetermined width, and an axis serving as a pivot point of the arm is provided. a shaft serving as the rotation fulcrum of the second arm, and a shaft of the gear constituting the third power transmitter, in which arranged on the same arc shape as the arc of the support plate. According to the present embodiment, since the support plate can be formed in an arc shape or a fan shape, it can be matched with the structure of the knee joint, and the fit can be enhanced.

Hereinafter, the joint support device of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a state in which the knee is extended by wearing the joint support device according to the first embodiment, FIG. 2 is a side view showing a state in which the knee is bent by wearing the device, and FIG. FIG. 4 is a front view showing a state in which the orthosis is worn and the knee is extended, and FIG.
First, the overall configuration will be described with reference to FIGS.
The joint support device according to the present embodiment includes a support plate 1 disposed on each side of the joint, each first arm 10 provided rotatably on one end side of these support plates 1, and these support plates. 1 is provided with each second arm 20 rotatably provided on the other end side of 1 and a connecting member 30 for connecting a pair of support plates. The first arm 10 has a rotation fulcrum 11 on one end side and a pin 12 for attaching a first band 41 on the other end side. The second arm 20 has a rotation fulcrum 21 on one end side and a pin 22 for attaching a second band 42 on the other end side. The rotation fulcrum 11 of the first arm 10 is provided on one end side of the support plate 1, and the rotation fulcrum 21 of the second arm 20 is provided on the other end side of the support plate 1. The first band 41 is wound around the thigh above the joint. The second band 42 is wound around the lower leg part below the joint.

The third band 43 is disposed so as to be wound between the first band 41 and the joint. The fourth band 44 is arranged so as to be wound between the second band 42 and the joint.
The third band 43 is attached to the first arm 10 by the connecting portion 50. This connection part 50 is comprised with spring materials, such as a leaf | plate spring, and is provided so that elastic deformation may be performed between the inner surface of the 1st arm 10, and a body. The upper end of the connection portion 50 is connected to the inner surface of the first arm 10 by a pin 51, and the lower end of the connection portion 50 is connected to the third band 43 by a pin 52.
In addition, the fourth band 44 is attached to the second arm 20 by the connecting portion 60. This connection part 60 is comprised with spring materials, such as a leaf | plate spring, and is provided so that elastic deformation may be performed between the inner surface of the 2nd arm 20, and a body. The lower end of the connection portion 60 is connected to the inner surface of the second arm 20 by a pin 61, and the upper end of the connection portion 60 is connected to the fourth band 44 by a pin 62.

Next, the structure of the support plate 1 is demonstrated using FIG.
The support plate 1 is composed of two plate members having a substantially fan-like shape including an arc part having a predetermined width and a joint part connected to the arc part. On the arc portion of the support plate 1, a bearing that pivotally supports the axis of the rotation fulcrum 11 of the first arm 10, the axis of the rotation fulcrum 21 of the second arm 20, and the axes of the two gears 2 and 3. Is forming. And the support plate 1 hold | maintains the axis | shaft of the rotation fulcrums 11 and 21, and the axis | shaft of the two gearwheels 2 and 3 so that rotation is possible by superimposing two board | plate materials. A gear is formed at the end of the first arm 10 on the side of the rotation fulcrum 11 to constitute a first drive transmission unit 13. A gear is formed at the end of the second arm 20 on the side of the rotation fulcrum 21 to form a second drive transmission unit 23. The two gears 2 and 3 are arranged between the first drive transmission unit 13 and the second drive transmission unit 23 to form a third drive transmission unit. In the present embodiment, the third drive transmission unit is configured by the two gears 2 and 3, but may be configured by four or even number of gears. By configuring the third drive transmission portion with a plurality of gears in this way, a gear having a small diameter can be used, and the width of the arc portion of the support plate 1 can be narrowed.
The first drive transmission unit 13 is formed with a stopper 4A, and the second drive transmission unit 23 is formed with a stopper 4B. In addition, it is preferable to provide a stopper corresponding to the stoppers 4A and 4B for the two gears 2 and 3 as well. These stoppers 4A and 4B are formed so that the maximum opening angle of the first arm 10 and the second arm 20 on the connecting member 30 side is in the range of 110 to 130 degrees.
An end portion of the connecting member 30 is connected to the joint portion of the support plate 1. The connecting member 30 is provided to support the support plates 1 on both sides of the knee at regular intervals, and is made of a lightweight metal member such as an aluminum alloy or a titanium alloy having a band-like or rod-like rigidity. Thus, since it can reduce in weight by setting it as the one connection member 30, since it is fixing with the support plate 1, rigidity is high and it is stable. In addition, it is located on the back side of the knee when worn, so it does not get in the way when sitting on a chair or sitting on the floor and kneeling on the floor. Hard to see from people. In addition, in the present Example, although the connection member 30 was attached to the back of a knee joint, you may attach to the front.

Further, since the maximum opening angle between the first arm 10 and the second arm 20 is regulated by the stoppers 4A and 4B, the knee joint does not open more than necessary. Can be prevented.
Further, since the first arm 10 and the second arm 20 can rotate following the thigh and the lower thigh at the time of knee flexion, they can sit or kneel on the chair without removing the knee brace. Can do.
The first band 41 is fixed all around the thigh, the second band 42 is fixed all around the lower thigh, and the third band 43 and the fourth band 44 are respectively Since the joints 50 and 60 that can be elastically deformed are fixed at the upper and lower positions of the joint, there is almost no mounting displacement due to walking or bending and stretching operations, and there is little positional displacement due to long-time mounting, so that the mounting feeling is excellent.
Although the present embodiment has been described as a support device for a knee joint, it can be used not only as a knee joint but also as a joint support device for supporting other joint portions.

Next, the drive transmission part by Example 2, 3 is demonstrated using FIG. 5, FIG. Note that members having the same functions as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
In the embodiment shown in FIG. 5, the shaft of the gear constituting the first drive transmission portion 13, the shaft of the gear constituting the second drive transmission portion 23, and the two gears constituting the third drive transmission portion. Two or three axes are arranged in an arc shape. According to the present embodiment, since the support plate can be formed in an arc shape or a fan shape, it can be matched with the structure of the knee joint, and the fit can be enhanced.

  In the embodiment shown in FIG. 6, an imaginary line connecting the axes of the two gears 2 and 3 constituting the third drive transmission unit is represented by the axis of the gear constituting the first drive transmission unit 13 and the second drive transmission. This is different from an imaginary line connecting the shafts of the gears constituting the portion 23. According to the present embodiment, it is possible to eliminate instability of meshing of the gears due to the diameters of the gears 2 and 3 becoming too small, and to change the gears 2 and 3 without changing the diameters of the gears 2 and 3. The distance between the shaft support portion of the first arm and the shaft support portion of the second arm can be changed depending on the arrangement.

  The joint support device of the present invention can be applied for reflexive use such as rehabilitation of hemiplegia and polio, for deformable joints such as O-leg, X-leg and rheumatoid arthritis, and for sports such as ligament damage and meniscal damage. Can do.

The side view which shows the state which mounted | wore with the joint support device by one Example of this invention, and extended the knee Side view showing a state in which the knee is bent with the brace attached Front view showing a state where the knee is extended with the same brace Side view of the main part of the orthosis Side view of main part of joint support device according to embodiment 2 of the present invention. Side view of main part of joint support device according to embodiment 3 of the present invention.

1 Support Plate 2 Gear (Third Drive Transmission Unit)
3 Gear (Third drive transmission part)
DESCRIPTION OF SYMBOLS 10 1st arm 13 1st drive transmission part 20 2nd arm 23 2nd drive transmission part 30 Connecting member 41 1st band 42 2nd band 43 3rd band 44 4th band 50 Connection part 60 connections

Claims (2)

Support plates respectively arranged on both sides of the joint, first arms provided with pivots serving as pivot points on one end side of the support plates, and rotation on the other end sides of the support plates Each of the second arms provided with a shaft serving as a fulcrum, and a connecting member for connecting the support plates, and the connecting member is positioned on the rear side of the knee when worn. a joint support brace that supports the plate at regular intervals, said the Kaido支point of the first arm is provided a first drive transmission portion which gear is formed, the times of the second arm the Do支point provided with the second drive transmitting portion gear is formed, the third drive transmission unit gear is formed between said first drive transmitting portion and the second drive transmitting portion the provided, the third of the teeth of the gear and the first drive transmission portion of the drive transmission unit Engaging the door, the third is between the gear of the drive transmission unit to engage with said gear of said second drive transmission unit, in conjunction with said first arm and said second arm, said The joint support device, wherein the third drive transmission unit is configured by an even number of gears . The support plate is made of a substantially fan-shaped plate material having a circular arc portion having a predetermined width, the shaft serving as the rotation fulcrum of the first arm, and the shaft serving as the rotation fulcrum of the second arm. , joint support brace of claim 1, and the axis of the gears constituting the front Symbol third drive transmission unit, characterized in that arranged on the same arc shape and the arc portion of the support plate.

Images