Knee joint postoperative walking-aiding training device

Abstract

The invention relates to the technical field of knee joint rehabilitation instruments, in particular to a knee joint postoperative walking-aid training device which comprises a horizontal frame, walking wheels are connected to the lower portion of the front end and the lower portion of the rear end of the horizontal frame; the lower ends of the two fixing pipes are connected to the upper surfaces of the two sides of the horizontal frame respectively; the upper parts of the two retainers penetrate through the horizontal frame and then are respectively inserted into the fixed pipes, and the lower parts of the two retainers are positioned below the horizontal frame; the lower parts of the two telescopic vertical supporting rods are respectively connected with the upper parts of the retainers; and the lower parts of the two elbow support pieces are respectively connected with the upper ends of the telescopic vertical support rods. The leg training device can assist a knee-joint postoperative patient in safely and conveniently performing leg training, and particularly assist the patient in stably and easily advancing on the flat ground in the initial walking stage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of knee rehabilitation devices, in particular to a knee postoperative walking training device. BACKGROUND

[0002] The knee joint is composed of the lower end of the femur, the upper end of the tibia and the patella, is the largest and most complex joint of the human body, and belongs to the trochoid joint. For patients after leg knee joint surgery, the training of lower limbs is very important. If the leg muscles are atrophied for a long time without exercise, the corresponding functions will be lost. In order to make the knee joint after surgery recover to the normal level quickly, it is necessary to use a walking training device to properly rehabilitate the knee joint of the user.

[0003] Generally, the patient will use the walking auxiliary device with the hand, move the lower limbs by the power of the arm, and train the movement ability of the lower limbs. However, the existing walking auxiliary device still has some problems, for example, the function is single, it is difficult to provide more rich, safe and convenient lower limb training mode, and in the initial stage of patient walking training, some need the patient to lift the whole device to move, some need the hand to operate the brake handle to cooperate with the moving, which is not convenient for the patient to walk stably and easily, and is not conducive to the rehabilitation of the patient.

[0004] Therefore, a knee postoperative walking training device is proposed. SUMMARY

[0005] The purpose of the present application includes providing a knee postoperative walking training device which can assist the patient after knee surgery to safely and conveniently train the leg, especially to assist the patient to walk stably and easily on the flat ground in the initial stage of walking.

[0006] In order to achieve the above purpose, the present application has the following technical scheme:

[0007] The present application provides a knee postoperative walking training device, which comprises,

[0008] A horizontal frame, the lower front end and the lower rear end are connected with walking wheels;

[0009] Two fixed pipes, the lower ends of which are connected to the upper surfaces of the two sides of the horizontal frame;

[0010] Two stoppers, the upper parts of which are inserted into the fixed pipes through the horizontal frame, and the lower parts of which are located below the horizontal frame;

[0011] Two telescopic vertical support rods, the lower parts of which are connected to the upper parts of the stoppers;

[0012] Two elbow supports, the lower surfaces of which are connected to the upper ends of the telescopic vertical support rods.

[0013] Preferably, the walking wheels comprise directional wheels and universal wheels, the directional wheels are connected to the rear end of the horizontal frame, and the universal wheels are connected to the front end of the horizontal frame.

[0014] Preferably, the horizontal frame comprises a left side rod, a right side rod, and a cross connecting rod connected between the front ends of the left side rod and the right side rod, the front portions of the left side rod and the right side rod are both provided with a socket for fixing the lower part of the fixed tube.

[0015] Preferably, the elbow support comprises a support plate, an inverted L-shaped baffle plate fixed to the side edges of the support plate, and a handle fixed to the front portion of the support plate, the lower surface of the support plate is fixed to the upper end of the telescopic vertical support rod.

[0016] Preferably, a support plate connecting rod is connected between the front ends of the elbow plates.

[0017] Preferably, the lower part of the telescopic vertical support rod is threaded with a threaded rod, and the length of the lower tube protruding out of the telescopic vertical support rod can be adjusted by screwing the threaded rod, thereby limiting the downward movement distance of the elbow support connected to the telescopic vertical support rod.

[0018] Preferably, the stopper comprises a straight rod, an ear plate, and a bottom support plate, the straight rod is slidably inserted into the fixed tube through the rear of the horizontal frame, the bottom support plate is connected to the lower end of the straight rod and located below the horizontal frame.

[0019] Preferably, the lower surface of the bottom support plate is connected with an anti-skid pad.

[0020] Preferably, the upper end of the fixed tube is rotatably connected with a pulley, the length direction is provided with a straight rod socket for slidably inserting the straight rod, the rear of the circumferential wall is provided with a long slot hole for accommodating the ear plate along the length direction, the front of the circumferential wall is connected with a slide rail, the top end of the slide rail is provided with a rope passing hole, a inverted L-shaped sliding block is slidably connected in the slide groove of the slide rail, the inverted L-shaped sliding block is detachably connected with an elastic pulling piece between the horizontal frame, the upper end of the inverted L-shaped sliding block is connected with a steel wire rope, the steel wire rope passes through the rope passing hole, winds around the pulley, and is connected to the lower part of the telescopic vertical support rod at the other end, the telescopic vertical support rod and the ear plate are rotatably connected with upper and lower connecting rods which are parallel and equal in length.

[0021] Preferably, the upper surface of the inverted L-shaped sliding block is provided with a plurality of equidistant recesses and openings, the openings communicate with the recesses and the side surface of the inverted L-shaped sliding block.

[0022] Preferably, the elastic pulling piece comprises a spring and a spherical ball connected to the upper end of the spring, the lower end of the spring is connected to the horizontal frame, and the spherical ball is used for movably clamping in the recess.

[0023] Preferably, the upper end of the fixed tube is connected with a clamping protrusion, the lower part of the clamping protrusion is provided with a hole for the steel wire rope to pass through; the telescopic vertical support rod is connected with a locking rod, the locking rod comprises an end hook rod and a magnet, one end of the end hook rod is provided with an axle hole for rotationally connecting the front circumferential wall of the telescopic vertical support rod, and the other end is provided with a hook for hooking the clamping protrusion.

[0024] Preferably, the lower tube is made of carbon steel.

[0025] Preferably, the upper surface of the supporting plate is connected with a soft pad.

[0026] Due to the above technical scheme, the application has the following advantages:

[0027] 1. When the application is used to assist the postoperative patients of knee joint to perform leg training such as static squatting, the patient only needs to place the forearm on the supporting plate in a comfortable standing position, hold the handle naturally, adjust the foot spacing and the direction of the toes, and then gradually squat down, without the need to frequently try to adjust and move the feet forward and backward to prevent the knee joint from being overextended when squatting, which is generally inconvenient for the trainees who worry about falling backward and unconsciously lean forward, and this phenomenon is more prominent for patients with joint problems. In addition, the application can prevent the patients from falling and over-squatting during leg training, and can provide assistance during the training process to prevent joint damage caused by excessive pressure, thereby achieving safe and convenient leg training for postoperative patients of knee joint.

[0028] 2. In the initial stage of assisting the patient to walk, the patient does not need to pay special attention to the coordination between the hand holding the brake and walking, but only needs to slightly move the forearm upward when wanting to walk, lift the elbow support through the forearm, and then lift the stopper off the ground, so as to release the brake and move the application; when stopping, the arm stopper can contact the ground without moving upward, and provide braking force, and when the arm is pressed downward, the braking effect increases, which makes the walking assistance more safe and easy to operate, especially in the initial stage of assisting the patient to walk on flat ground.

[0029] 3. The braking kinetic energy of the application can be achieved by slightly lifting the elbow support, the telescopic vertical support rod, the upper and lower connecting rods, and the stopper, without the need to lift the horizontal frame, the fixed tube, the sliding rail and other components, which is close to the operating force of a general walking stick and is relatively easy to use.

[0030] 4. The assist module provided by this invention not only provides training assistance and protection, but also allows for easy adjustment of the number of elastic pullers and inverted L-shaped sliders by pushing the ball into or out of the recess with a finger, thereby enabling convenient adjustment of the assist level.

[0031] 5. This invention does not require electricity or high-cost components such as motors, making it easy to produce, with low manufacturing costs and easy to promote. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a side view of the knee joint postoperative walking assistance training device provided in an embodiment of the present invention when it is in the walking assistance state.

[0034] Figure 2 To be Figure 1 A diagram showing the state after the locking lever is lifted to unlock and the elbow support is fully pressed down.

[0035] Figure 3 for Figure 2 Side view of the stop component in the middle;

[0036] Figure 4 for Figure 2 A top-down view;

[0037] Figure 5 for Figure 2 Enlarged diagram of point A in the diagram;

[0038] Figure 6 for Figure 2 A side view of the locking bar in the diagram;

[0039] Figure 7 This is a side view of the knee joint postoperative walking aid training device provided in an embodiment of the present invention when it is in the walking aid use state.

[0040] Figure 8 This is a side view of the knee joint postoperative walking assistance training device provided in this embodiment of the invention when it is used to assist the leg in training.

[0041] In the figure: 1, shaft; 2, lower connecting rod; 3, upper connecting rod; 4, pulley; 5, steel wire rope; 6, shaft hole; 10, horizontal frame; 11, left side rod; 12, right side rod; 13, cross connecting rod; 14, directional wheel; 15, universal wheel; 16, supporting plate connecting rod; 20, fixed tube; 21, long slot hole; 22, straight rod insertion hole; 23, clamping block; 24, blocking rod; 30, stop; 31, straight rod; 32, ear plate; 33, bottom support plate; 34, non-slip pad; 40, telescopic vertical support rod; 41, upper tube; 411, limiting hole; 42, lower tube; 421, clamping convex; 422, threaded rod; 50, elbow support; 51, supporting plate; 52, handle; 53, inverted L-shaped blocking plate; 531, vertical plate; 532, horizontal plate; 60, sliding rail; 61, rope passing hole; 62, sliding groove; 70, inverted L-shaped sliding block; 71, crater; 72, notch; 80, elastic pulling piece; 81, round ball; 82, spring; 90, locking rod; 91, end hook rod; 911, hook; 92, magnet; 100, knee joint postoperative walking training device. DETAILED DESCRIPTION

[0042] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0043] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0044] The specific implementation will be described as follows:

[0045] The knee joint postoperative walking training device 100 provided by the present application, as shown in Figure 1 , Figure 2 , Figure 4 , comprises a horizontal frame 10, a walking wheel connected to the lower front end and the lower rear end; two fixed tubes 20, the lower ends of which are respectively welded to the upper sides of the two sides of the horizontal frame 10; two stoppers 30, the upper parts of which pass through the horizontal frame 10 and are respectively movably inserted into the fixed tubes 20, and the lower parts of which are located below the horizontal frame 10; two telescopic vertical support rods 40, the lower ends of which are respectively provided with threaded rods 422, the middle parts of which are respectively connected with lower connecting rods 2 and upper connecting rods 3 through shafts 1, and the other ends of the lower connecting rods 2 and the upper connecting rods 3 are rotatably connected to the upper parts of the stoppers 30; two elbow supports 50, the lower parts of which are respectively welded to the upper ends of the telescopic vertical support rods 40; and a supporting plate connecting rod 16 welded between the front ends of the two elbow supports 50.

[0046] The specific embodiment will be described as follows:

[0047] The horizontal frame 10 includes a left side rod 11, a right side rod 12, and a cross connecting rod 13 connected between the front ends of the left side rod 11 and the right side rod 12. The front parts of the left side rod 11 and the right side rod 12 are both provided with a socket for fixing the lower part of the fixed tube 20, see Figure 2 、 Figure 4 .

[0048] The walking wheels include a directional wheel 14 connected to the rear end of the horizontal frame 10 and a universal wheel 15 connected to the front end of the horizontal frame 10, see Figure 2 、 Figure 4 .

[0049] The elbow support 50 includes a support plate 51, an inverted L-shaped baffle 53 fixed to the side edges of the upper surface of the support plate 51, and a handle 52 fixed to the upper surface of the front part of the support plate 51. The lower surface of the support plate 51 is fixed to the upper end of the upper tube 41 of the telescopic vertical support rod 40, and a support plate connecting rod 16 is welded between the front ends of the two support plates 51, see Figure 2 、 Figure 4 .

[0050] The stopper 30 includes a straight rod 31, two ear connecting plates 32, and a bottom support plate 33. The straight rod 31 is inserted into the fixed tube 20 through the rear sliding of the horizontal frame 10. The two ear connecting plates 32 are spaced apart and welded to the upper part of the outer circumferential surface of the straight rod 31, respectively, for rotatingly connecting one end of the upper connecting rod 3 and the lower connecting rod 2, respectively, through the shaft 1. The upper connecting rod 3 and the lower connecting rod 2 are parallel and equal in length. The bottom support plate 33 is bonded with a non-slip pad 34 on the lower surface, and is welded to the lower end of the straight rod 31 on the upper surface and located below the horizontal frame 10, see Figure 1 、 Figure 2 、 Figure 3 .

[0051] The upper end of the fixed tube 20 is rotatably connected with one pulley 4 on each of the front and rear sides, and is welded with a baffle rod 24 above the pulley 4. A clamping protrusion 23 is welded to the middle of the upper end. A straight rod insertion hole 22 for slidingly inserting the straight rod 31 is provided in the length direction. A long slot hole 21 for allowing the ear connecting plate 32 to be positioned is provided in the length direction on the rear surface of the circumferential wall. A slide rail 60 is connected to the front surface of the circumferential wall. The top end of the slide rail 60 is provided with a rope passing hole 61. An inverted L-shaped sliding block 70 is slidingly connected in a slide groove 62 of the slide rail 60. The inverted L-shaped sliding block 70 is detachably connected with the horizontal frame 10 through an elastic pulling piece 80. The upper end of the inverted L-shaped sliding block 70 is connected with a steel wire rope 5. The steel wire rope 5 passes through the rope passing hole 61, winds around the pulley 4, and is connected to the lower part of the telescopic vertical support rod 40 at the other end, see Figure 1 ,Figure 2 、 Figure 4 、 Figure 5 .

[0052] The upper surface of the inverted L-shaped slider 70 is provided with four equidistant recesses 71 and a gap 72, the gap 72 is communicated with the recess 71 and the side surface of the inverted L-shaped slider 70, see Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 .

[0053] The elastic pulling piece 80 comprises a spring 82 and a spherical ball 81 connected to the upper end of the spring 82, the lower end of the spring 82 is connected to the horizontal frame 10, and the spherical ball 81 is used to be movably clamped in the recess 71, see Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 .

[0054] The telescopic vertical support rod 40 comprises an upper pipe 41 provided with a plurality of limiting holes 411 at different heights of the circumferential wall, and a lower pipe 42 inserted into the upper pipe 41, the circumferential wall of the lower pipe 42 is telescopically connected with a clamping convex 421 used for inserting the limiting hole 411 (a common telescopic rod limiting arrangement, which will not be repeated), the upper pipe 41 and the lower pipe 42 can be locked in position through the clamping convex 421, the front surface of the outer wall of the lower pipe 42 is connected with a lock rod 90 through a shaft 1, the lock rod 90 comprises an end hook rod 91 and two magnets 92, one end of the end hook rod 91 is provided with a shaft hole 6 used for rotatingly connecting the front surface of the outer wall of the lower pipe 42, the other end is provided with a hook 911 used for hooking the clamping convex 23, wherein the magnet 92 connected to the upper surface of the end hook rod 91 is used for attracting the upper part of the lower pipe 42, and the magnet 92 connected to the lower surface of the end hook rod 91 is used for attracting the convex 23, see Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 .

[0055] In the embodiment, the blocking rod 24 is used to block the steel wire rope 5 from being pulled out of the pulley; the lower part of the clamping convex 23 is provided with a hole through which the steel wire rope 5 passes; the upper surface of the supporting plate 51 is connected with a soft pad; at least the lower pipe 42 and the convex 23 are made of carbon steel.

[0056] The use method of the application for assisting patients to walk is as follows:

[0057] S1, the end of the hook 911 of the lock rod 90 is pulled down to the front of the clamping convex 23 (at this time, the elbow support 50 will not be lowered after being pressed down);

[0058] S2, the elbow support 50 is pushed to the front of the patient facing the invention, and the patient's forearm is placed on the support plate 51 when the upper arm is naturally lowered and the elbow is bent at 90°, and then the patient holds the handle 52;

[0059] S3, walk, the patient's forearm is moved up (the arm lifts the elbow support 50 to lift the stopper 30 off the ground through the telescopic vertical support rod 40 and the upper and lower connecting rods 3 and 2) to push the handle 52 and move the invention, and when it is necessary to stop, the arm does not lift the elbow support 50 (the stopper 30 is in contact with the ground, and the friction between the stopper 30 and the ground increases with the increase of the pressure on the support plate 51), that is, the operation process of walking with the help of the invention is: forearm up - push the handle 52 - forearm down to move step by step. In the recovery period, continuous walking can also be carried out by lifting the forearm without falling, and the invention provides protection against falling.

[0060] The use method of the invention for assisting patients in leg training:

[0061] S1, adjust, first push all the balls 81 into the recesses 71 (at this time, the spring 82 can provide the maximum assistance, and the size of the assistance can be reduced by pushing the balls 81 out of the recesses 71 according to the recovery condition and personal physical ability, and if the operation has been adjusted, it can be omitted); the hook 911 end of the lock rod 90 is lifted and rotated to the end hook rod 91 which is fixedly connected to the lower pipe 42 by the magnet 92 (at this time, the lock rod 90 is no longer connected to the clamping convex 23, and the elbow support 50 can be pressed downward); if the operation has been adjusted, it can be omitted;

[0062] S2, as described above;

[0063] S3, static squat training, the feet are as wide as the shoulders, the toes and the knee joints are straight forward, and "inward and outward eight characters" are not allowed, and the patient gradually squats (less than 90°, the threaded rod 422 can be adjusted to adjust the length of the lower pipe 42, so that the threaded rod 422 abuts against the side rod of the horizontal frame 10 to prevent the elbow support 50 from continuing to move downward to the patient's squatting too deep) to perform training according to the doctor's recommended training intensity, number of sets, interval time and other requirements.

[0064] When the static squat training is completed (about the 9th to 10th week), normal squat training can be carried out under the assistance of the invention, and the static squat training body position requirements are referred to.

[0065] The principle of the elastic pulling piece 80 of the invention to provide assistance:

[0066] When the patient presses the support plate 51 with his forearm, the support plate 51 is lowered to press the telescopic vertical support rod 40, and the upper end of the upper connecting rod 3 and the lower end of the lower connecting rod 2 are turned downward. In the process of the telescopic vertical support rod 40 moving downward and away from the pulley 4, the steel wire rope 5 is stretched, and the other end of the steel wire rope 5 lifts the inverted L-shaped sliding block 70. At this time, the spring 82 connected to the front of the side rod of the horizontal frame 10 is stretched, and the inverted L-shaped sliding block 70 is prevented from moving upward. See Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 .

[0067] The above embodiments of the present application are merely illustrative for clearly explaining the present application, and are not intended to limit the embodiments of the present application. Other different forms of changes or variations can be made on the basis of the above description for those of ordinary skill in the art. It is impossible to enumerate all the embodiments here. Any obvious changes or variations derived from the technical solutions of the present application are still within the protection scope of the present application.

Claims

1. A post-operative knee-walking training device (100), characterized in that: The utility model relates to a horizontal frame (10) is connected with the walking wheel in the front lower surface and the rear lower surface, 2 fixed tubes (20) are connected on the upper surface of the both sides of the horizontal frame (10) respectively, 2 stoppers (30) are inserted in the fixed tube (20) respectively after passing through the upper portion of the horizontal frame (10), and the lower portion is located in the lower surface of the horizontal frame (10), 2 telescopic vertical support rods (40) are connected with the upper portion of the stopper (30) respectively, and 2 elbow supports (50) are connected with the upper end of the telescopic vertical support rod (40) respectively. The walking wheel includes the directional wheel (14) and the universal wheel (15), the directional wheel (14) is connected in the rear end of the horizontal frame (10), and the universal wheel (15) is connected in the front end of the horizontal frame (10). The horizontal frame (10) includes the left side rod (11), the right side rod (12) and the cross connecting rod (13) connected between the front end of the left side rod (11) and the right side rod (12), and the front upper surface of the left side rod (11) and the right side rod (12) is provided with the insertion hole for fixing the lower portion of the fixed tube (20). The elbow support (50) includes the supporting plate (51), the inverted L-shaped baffle (53) fixed on the upper side of the supporting plate (51) and the handle (52) fixed on the upper surface of the front portion of the supporting plate (51), and the lower surface of the supporting plate (51) is fixed with the upper end of the telescopic vertical support rod (40). The lower portion of the telescopic vertical support rod (40) is screwed with the threaded rod (422). The stopper (30) includes the straight rod (31), the ear connecting plate (32) and the bottom support plate (33), the straight rod (31) is inserted in the fixed tube (20) after passing through the horizontal frame (10) and sliding, the bottom support plate (33) is connected with the lower end of the straight rod (31) and located in the lower surface of the horizontal frame (10).

2. The post-operative knee-walk training device (100) as claimed in claim 1, wherein: The upper end of the fixed tube (20) is rotatably connected with the pulley (4), the length direction is provided with the straight rod insertion hole (22) for sliding insertion of the straight rod (31), the length direction is provided with the long slot hole (21) for the ear connecting plate (32) on the rear surface of the circumferential wall, the front surface of the circumferential wall is connected with the slide rail (60), the top end of the slide rail (60) is provided with the rope penetrating hole (61), the inverted L-shaped sliding block (70) is slidably connected in the sliding groove (62) of the slide rail (60), the inverted L-shaped sliding block (70) and the horizontal frame (10) are detachably connected with the elastic pulling piece (80), the upper end of the inverted L-shaped sliding block (70) is connected with the steel wire rope (5), the steel wire rope (5) passes through the rope penetrating hole (61), passes around the pulley (4) and is connected with the lower portion of the telescopic vertical support rod (40) on the other end, the telescopic vertical support rod (40) and the ear connecting plate (32) are rotatably connected with the upper connecting rod (3) and the lower connecting rod (2) which are parallel and equal in length.

3. The post-operative knee-walk training device (100) as claimed in claim 1, wherein: The upper surface of the inverted L-shaped sliding block (70) is provided with a plurality of equidistant recesses (71) and openings (72), and the openings (72) communicate with the recesses (71) and the side surface of the inverted L-shaped sliding block (70).

4. The post-operative knee-walk training device (100) as claimed in claim 1, wherein: ​ 5. The post-operative knee-walk training device (100) as claimed in claim 1, wherein: ​ 6. The post-operative knee-walk training device (100) as claimed in claim 1, wherein: ​ 7. The post-operative knee-walk training device (100) as claimed in claim 6, wherein: ​ 8. The post-operative knee-walk training device (100) as claimed in claim 7, wherein: ​ 9. The post-operative knee-walk training device (100) as claimed in claim 7, wherein: The elastic pulling piece (80) comprises a spring (82) and a ball (81) connected to the upper end of the spring (82), and the lower end of the spring (82) is connected to the horizontal frame (10).

10. The post-operative knee-walk training device (100) as claimed in claim 7, wherein: The upper end of the fixed tube (20) is connected with a clamping protrusion (23), and the lower part of the clamping protrusion (23) is provided with a hole through which the steel wire rope (5) passes; the telescopic vertical supporting rod (40) is connected with a locking rod (90), and the locking rod (90) comprises an end hook rod (91) and a magnet (92), one end of the end hook rod (91) is provided with an axle hole (6) used for rotationally connecting the front circumferential wall of the telescopic vertical supporting rod (40), and the other end is provided with a hook (911) used for hooking the clamping protrusion (23).

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