JPH0584315U - Traction equipment used for knee brace - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a tractor for use in a knee brace to reduce the burden on the patient by shortening the period of rehabilitation required after surgery for a torn ligament. [Structure] A traction tool 10 used for a knee brace is a traction tool used for a knee brace attached to a knee joint strut, and includes a pair of rotor guides 11 fixed to the strut and both ends of front ends of the respective rotor guides 11. Shaft 12 for connecting the
2, a rotor 14 provided on the outer surface thereof with a button 13 for hooking on a strap attached to a tow pad that abuts on a thigh or a lower leg, and a rotor 14 arranged inside the rotor 14 A coil spring 15 that urges the rotor to rotate in one direction and a lock button 16 that is provided on one side of the rotor guide 11 so as to be able to brake and that holds the rotor 14 in the urged state at a predetermined angle, and a spring that holds the lock button 16 in the locked state. 17 and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tractor used for a knee brace that pulls a thigh or a lower leg in a certain direction.

[0002]

[Prior Art]

 In the past, in the treatment of a torn ligament after surgery, the affected area was fixed using gypsum or a commercially available knee cruciate ligament brace, and after a certain period of time, rehabilitation was performed to restore the functions of the knee and the like.

[0003]

[Problems to be solved by the device]

 However, in the conventional method for treating a torn ligament described above, it cannot be said that the plaster or the commercially available knee cruciate ligament brace effectively damps the abnormal movement in the sagittal plane of the knee during cruciate ligament injury. As a result, the ruptured ligament is excessively burdened, and it is difficult for the patient to perform early knee movements, and it takes a long time until the function is restored and painful rehabilitation is imposed, which is a great burden to the patient. The present invention has been made in view of such circumstances, and provides a tractor for use in a knee brace that reduces the burden on the patient by shortening the rehabilitation period required after surgery for a torn ligament. With the goal.

[0004]

[Means for Solving the Problems]

 The tractor used for the knee brace according to claim 1 is a tractor used for a knee brace attached to a knee joint strut, and is a pair of rotor guides fixed to the strut and a tip of each rotor guide. A rotor having an outer surface provided with a shaft for connecting both ends of the portion, a button for engaging with a strap attached to a pulling pad arranged on the outer side of the shaft and abutting the thigh or the lower leg, and the rotor of the rotor. A coil spring that is arranged inside to rotate and urge the rotor in a fixed direction, and a lock button that holds the rotor in a biased state at a predetermined angle and that can be braked by the rotor guide on one side. And a spring for holding the same.

[0005]

[Action]

 In the tractor used for the knee brace according to the first aspect, the tractor is attached to the knee brace and is attached after conservative treatment or surgery for a patient with ligament injury. Then, a pulling pad is provided on a predetermined portion of both the thigh and the lower leg that require pulling in a certain direction, and a strap attached to the pulling pad is hooked on a button of the rotor of the pulling tool. Further, the lock button is slowly released, and the coil spring arranged inside the rotor urges the rotor to rotate in a certain direction. By the rotational urging of the rotor, the traction pad is pulled in a certain direction to put the thigh and the lower leg in the traction state, and appropriate stress is applied to the injured ligament to perform knee motion.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a cross-sectional view of a main part of a traction device used in a knee brace according to an embodiment of the present invention, FIG. 2 is an explanatory view showing a state in which the traction device used in the knee brace is attached to a column, and FIG. It is explanatory drawing which shows the state which used the knee brace which attached the pulling tool used for the same knee brace. As shown in FIG. 1, a tractor 10 used in a knee brace according to an embodiment of the present invention connects a pair of rotor guides 11 made of a duralumin material and both ends of a front portion of each rotor guide 11. A shaft 12, a rotor 14 arranged outside the shaft 12 and having a button 13 on its outer surface, a coil spring 15 arranged inside the rotor 14, a lock button 16 provided on the rotor guide 11, And a spring 17 for holding the lock button 16 in a locked state.

A mounting hole 19 and a screw hole 20 are provided inside the tip end portions of the paired rotor guides 11 (only the tip end portion of one rotor guide 11 is shown), and further, one rotor guide 11 A lock button screw hole 21 is provided at the end. The shaft 12 has shaft fixing screw holes 22 inside both ends (only one end is shown), and a spring fixing groove 23 is provided facing one side surface (one spring fixing). Only the groove 23 is shown). The middle portion of the button 13 is a pillar, a screw portion is formed on the lower portion, a disc-shaped base portion is formed on the upper portion of the screw portion, and a disc-shaped knob portion is formed on the head portion. The rotor 14 is made of a duralumin material and has an outer diameter of 16 mm and a length of 32 mm. A lock button fitting hole 24 and a spring end fixing hole (not shown) are provided adjacent to the lock button fitting hole 24 in the inner upper part, and the button is formed on the side surface. Drill a screw hole 25.

The coil spring 15 is a coil spring made of stainless steel wire with a diameter of 1.2 mm and having an outer diameter of 11 mm / 6 pitch. One end is linear in the vertical direction and the other end is linear in the horizontal direction. Formed in. The spring 17 has a plate shape as a whole, and has a female screw portion (not shown) at one end and a screw insertion hole (not shown) at the other end. Both ends of the shaft 12 are mounted in the respective mounting holes 19 of the paired rotor guides 11 and screwed into the shaft fixing screw holes 22 via the screw holes 20 using the shaft fixing screws 26. The rotor 14 is rotatably arranged on the outside of the shaft 12, and the lock button 16 is fitted into the lock button fitting hole 24 through the lock button screw fitting hole 21, and the button screw fitting hole 25 is fitted with a washer 27. To fix the button 13.

One end of the coil spring 15 is installed in the spring fixing groove 23 of the shaft 12, and the other end is installed in a spring end fixing hole (not shown) of the rotor 14. The lock button 16 is screwed into one end of the spring 17, and the other end is fixed to the rotor guide 11 using a lock button fixing screw 28. As shown in FIGS. 2 and 3, the ends of the rotor guides 11 forming a pair of the pulling device 10 used for the knee brace are attached to a pair of thigh columns 29 and a pair of lower leg columns 30 which are examples of knee joint columns. It is fixed using a fixing screw 31. Further, the button 13 includes a thigh correction pad 32, which is an example of a traction pad, and a thigh correction pad 33, which is an example of a traction pad, and a thigh correction strap 34 made of non-stretchable leather, which is an example of straps, and a thigh. The end of the straightening strap 35 is attached. Further, the ends of the thigh traction pad belt (not shown) and the crus traction pad belt (not shown) attached to the other of the thigh correction pad 32 and the crus correction pad 33 respectively face the thigh support 29 and the thigh support and the thigh (not shown). It is fixed to each of the lower leg columns facing the column 30.

Next, the knee brace 36 provided with the traction tool 10 used for the knee brace will be described in detail. As shown in FIG. 3, the knee brace 36 includes a thigh cuff 39 and a thigh cuff 40, which are examples of cuffs attached to the thigh portion 37 and the lower leg portion 38, respectively, on the knee joint support column. It has a non-stretchable leather cross strap 41 whose ends are fixed to 29 and the lower leg column 30. The thigh cuff 39 includes a cuff belt 42, a business key (belt metal fitting) 43, and a half moon 44. The lower leg cuff 40 includes a half moon 44 similar to the thigh support 29. The thigh support 29 is provided with a strap hooking button for hooking the cross strap 41.

Next, a method of using the tractor 10 used in the knee brace according to the embodiment of the present invention will be described. First, the lower leg cuff 40 is attached to the lower leg portion 38, and the upper leg cuff 39 is attached to the upper leg portion 37 by engaging the cuff belt 42 and the work key 43. The thigh correction pad 32 is provided behind the thigh portion 37, and the lower leg correction pad 33 is provided in front of the lower thigh portion 38, and the cross strap 41 is crossed from the lower thigh portion 38 to the thigh portion 37. Crossing on the lower leg orthodontic pad 33 on the front side of the tibia, after passing the medial and lateral sides of the knee, re-crossing on the thigh orthodontic pad 32 on the rear surface of the thigh 37, and fixed to the strap hooking button 45 (on one of the thigh support columns 29). Only the strap hooking button 45 provided is shown). The cross strap 41 is stretched from the flexion of 20 ° to tighten the thigh correction pad 32 forward and the lower leg correction pad 33 rearward to tension the lateral knees and brake the varus and valgus. The thigh correction strap 34 is passed between the thigh support 29 and the rotor 14 and hooked on the button 13. Then, the lock button 16 is loosened and pulled upward to release the lock. Along with this release, the tension of the coil spring 15 is transmitted to the rotor 14, and the button 13 urges the thigh correction strap 34 in the winding direction to pull the thigh correction pad 32 forward. The lower leg correction strap 35 is hooked on the button 13 similarly to the thigh correction strap 34, the lock button 16 is released in the same manner as described above, and the lower leg correction pad 33 is pulled backward.

The tractor 10 used for the pair of knee braces has a strong traction force of about 8 kg when rotated by 270 °, and the traction force changes the hooking direction of the thigh correction strap 34 and the crus correction strap 35. It is possible to change the braking direction with. To cancel the pulling of the pulling device 10 used for the knee brace, the thigh straightening strap 34 and the lower leg straightening strap 35 are pulled up, the bases of the thigh straightening strap 34 and the lower leg straightening strap 35 are pulled to rotate the rotor 14, and the lock button 16 is pushed. It is possible to operate it. As described above, when the traction device 10 used in the knee brace according to the embodiment of the present invention is attached to the knee brace 36 and used, the thigh 37 and the crus 38 are displaced and appropriate stress is applied to the injured ligament. Can perform knee exercises.

In the present embodiment, the thigh orthodontic pad 32 is provided behind the thigh 37 and the lower leg orthodontic pad 33 is provided in front of the lower thigh 38 so that the thighs and the lower leg orthodontic straps 34, 35 are changed to be worn. The thigh orthodontic pad 32 may be provided in front of the thigh 37 and the crus orthodontic pad 33 may be provided behind the crus 38 in accordance with the ligament formed. A plurality of traction tools 10 used for the knee brace may be provided in each of the thigh support 29 and the lower leg support 30. Although the duralumin material is used for the rotor guide 11, other materials such as titanium may be used. The rotor 14 is made of a duralumin material and has an outer diameter of 16 mm and a length of 32 mm, but other materials such as titanium may be used as required to obtain the desired outer diameter and length. The coil spring 15 is a 1.2 mm diameter stainless steel wire having an outer diameter of 11 mm / 6 pitch, but other kinds of steel wire having different diameters, outer diameters or pitches may be used. Is also good.

[0014]

[Effect of the device]

 The traction device for use in the knee brace according to claim 1 enables displacement braking between the femur and the tibia due to knee movement, and the conventional commercially available knee orthosis for knee cruciate ligament is a knee arrow in bending and extending the cruciate ligament. It cannot be said that it effectively dampens abnormal movements on the toe surface, which imposes an excessive burden on the ruptured ligament, which precludes early knee movement, but is used for the knee brace of the present invention. By attaching the retractor to the knee brace, the excessive displacement between the two bones in the sagittal plane of the knee during the knee movement is effectively dampened, thereby giving an appropriate stress to the fractured ligament, which is not possible in the past. It is possible to cure a fractured cruciate ligament that was previously possible, and it is possible to start rehabilitation training from an extremely early stage.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part of a tractor used in a knee brace according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which a pulling tool used for the knee brace is attached to a column.

FIG. 3 is an explanatory view showing a state in which a knee brace attached with a traction device used in the knee brace is used.

[Explanation of symbols]

 10 Traction tool used for knee brace 11 Rotor guide 12 Shaft 13 Button 14 Rotor 15 Coil spring 16 Lock button 17 Spring 19 Mounting hole 20 Screw hole 21 Lock button screw hole 22 Shaft fixing screw hole 23 Spring fixing groove 24 Lock button fitting hole 25 Button screw-in hole 26 Axis fixing screw 27 Washer 28 Lock button fixing screw 29 Thigh support 30 Lower leg support 31 Fixing screw 32 Thigh correction pad 33 Lower leg correction pad 34 Thigh correction strap 35 Lower leg correction strap 36 Knee orthosis 37 Thigh 38 Lower leg 39 Thigh cuff 40 Lower leg cuff 41 Cross strap 42 Cuff belt 43 Business key 44 Half moon 45 Strap hook button

Claims (1)

[Scope of utility model registration request] 1. A tractor used for a knee brace attached to a knee joint strut, comprising a pair of rotor guides fixed to the strut, a shaft connecting both ends of front ends of the respective rotor guides, and a shaft of the shaft. A rotor having an outer surface provided with a button that is attached to a strap that is attached to a tow pad that is arranged outside and abuts the thigh or lower leg, and is arranged inside the rotor and biases the rotor to rotate in a certain direction. A knee brace comprising a coil spring and a lock button provided on the rotor guide on one side so as to be capable of braking and holding the biased rotor at a predetermined angle, and a spring holding the lock button in the locked state. Tow tool used.