Walking aid for reducing knee joint wear

Abstract

The invention discloses a walking aid for reducing knee joint abrasion, and belongs to the field of knee joint auxiliary instruments, the walking aid comprises an upper fixing ring, a lower fixing ring and a first supporting structure arranged between the upper fixing ring and the lower fixing ring, the first supporting structure is arranged on one side corresponding to the inner side of a knee joint, and the first supporting structure comprises two sections of supporting rods; a spring structure is arranged between the two supporting rods and provides opposite opening force for relative separation of the two supporting rods. The second supporting structure is arranged on the other side of the upper fixing ring and the lower fixing ring relative to the first supporting structure, and the walking assisting structure accumulates potential energy when the knee joint is changed from the buckling position to the straightening position at the bending position corresponding to the joint of the first supporting structure and / or the second supporting structure. Potential energy is accumulated to assist the knee joint to move from a straight position to a flexion position. Knee joint rehabilitation can be effectively assisted by combining the walking aid structure and the elastic pressure reduction structure, knee joint abrasion in the rehabilitation process is reduced, and the knee joint buckling difficulty of a patient is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of knee joint treatment instruments, and specifically relates to a walking aid device for reducing knee joint wear. Background Art

[0002] At present, there are walking aids for the knee joint in the prior art. However, what the walking aid is designed to solve is to assist the patient in completing the flexion movement of the knee joint, but it does not reduce the wear on the knee joint during movement and the upright state. Thus, for some special patients, the walking aid and decompression of the knee joint are equally important.

[0003] In addition, the existing knee joint decompression devices in the prior art are mostly used for protecting the patient's knee joint to avoid excessive wear of the knee joint, while the knee joint walking aid devices are more applied to assisting normal people in completing the flexion movement when a large amount of activity is required, so as to reduce the fatigue degree of the patient.

[0004] For patients who need decompression after surgery and early ambulation with knee flexion, neither the simple decompression device nor the walking aid device can well solve the problems of the patients.

[0005] To solve the above technical problems, a walking aid device for reducing knee joint wear is provided. Summary of the Invention

[0006] In view of the above problems, the present application discloses a walking aid device for reducing knee joint wear. By means of an adjustable upper fixing ring disposed at the lower part of the thigh and an adjustable lower fixing ring disposed at the upper part of the lower leg, a first support structure is arranged between the upper fixing ring and the lower fixing ring at the inner side position of the knee joint. The first support structure is an elastic decompression structure, which includes two support rods, and a spring structure is arranged between the two support rods. The spring structure gives the two support rods a reverse force with a tendency of relative separation. A second support structure is arranged between the upper fixing ring and the lower fixing ring on the side opposite to the first support structure. A walking aid structure for assisting the flexion of the knee joint is arranged between the first and / or second support structures. Since the wear of the knee joint mainly occurs on the inner side of the knee joint, arranging the first support structure with a decompression effect at the corresponding position on the inner side of the knee joint can greatly avoid the wear of the knee joint and effectively protect the knee joint. In addition, the method of arranging a walking aid structure for assisting the flexion of the knee joint between the first and / or second support structures can provide a stable assistance to the patient and reduce the difficulty of the patient's movement.

[0007] The specific technical solution is as follows: A walking aid device for reducing knee joint wear, which includes an upper fixing ring, a lower fixing ring, a first support structure and a second support structure.

[0008] Among them, the upper fixing ring is disposed in the area between the lower part of the patient's thigh and the knee and is an adjustable ring.

[0009] The lower fixing ring is arranged in the area between the upper part of the patient's calf and the knee, and is an adjustable ring.

[0010] The first support structure is arranged between the upper fixing ring and the lower fixing ring, and is arranged on the side corresponding to the inner side of the knee joint. The first support structure includes two support rods, and a spring structure is arranged between the two support rods. The spring structure provides opposite expanding forces for the two support rods to separate relatively.

[0011] The second support structure is arranged on the other side between the upper fixing ring and the lower fixing ring relative to the first support structure.

[0012] A walking assistance structure for assisting the flexion of the knee joint is arranged at the bending position corresponding to the joint of the first support structure and / or the second support structure. When the knee joint changes from the flexion position to the straightening position, the walking assistance structure accumulates potential energy, and the accumulated potential energy assists the knee joint to move from the straightening position to the flexion position.

[0013] Through the cooperation of the walking assistance structure and the elastic decompression support, the dual functions of walking assistance and elastic decompression are combined, so that both the wear of the knee joint can be reduced and the assistance when the patient bends the knee joint can be provided, the difficulty of the patient's activity can be reduced, and the patient's recovery can be promoted. And through the setting of the two support structures, the connection of the two fixing rings can be ensured and the stability of the structure can be maintained.

[0014] Furthermore, the distance between the upper fixing ring and the lower fixing ring is 12 cm - 15 cm; to meet the need of arranging the upper fixing ring on the lower part of the thigh above the patella and fixing the lower fixing ring on the calf position under the patella. Through this position setting, the upper and lower fixing rings can be effectively fixed and will not change their positions randomly, avoiding the elastic force change caused by position adjustment, so that the recovery force

[0015] Furthermore, the two support rods of the first support structure are sleeved together to form a telescopic rod. The telescopic movement of the telescopic rod has a damping force, and the spring structure is sleeved outside the telescopic rod; this setting can better achieve the damping effect during elastic support.

[0016] Furthermore, the mutually sleeved support rods are divided into an outer support rod and an inner support rod. An adjusting thread section is arranged on the outer support rod, and an adjusting ring with a threaded hole that is always in contact with the spring is arranged outside the adjusting thread section. The spring is sleeved outside the inner support rod; the adjusting ring rotates along the adjusting thread section and rotates to different positions of the adjusting thread section to realize the adjustment of the spring telescopic degree, and further realize the adjustment of the support force, so as to ensure the adjustment of the support force according to the wear degree during the patient's recovery process.

[0017] Furthermore, the length range of the adjusting thread section is 1 - 3 cm, and this length setting can meet the requirement of adjusting the elastic support force.

[0018] Furthermore, both the upper fixing ring and the lower fixing ring are set as soft open-loop structures, and the size is adjusted by setting Velcro. Adjustment by Velcro is very simple and convenient.

[0019] Furthermore, fixing columns extend from both sides of the upper fixing ring and the lower fixing ring, and the fixing columns on the same side are rotatably connected to the first support structure or the second support structure on the corresponding side. A more specific implementation is that, in order to avoid the interference of the soft fixing ring on the supporting force during the supporting process, rigid plates are provided on both sides of the upper fixing ring and the lower fixing ring, and the fixing columns extend from the rigid plates. By this way, the purpose of effectively supporting force can be achieved.

[0020] Furthermore, a walking assistance structure is provided on the first support structure, and the walking assistance structure is provided on the outer support rod. Such a setting can ensure the effective setting of the walking assistance structure and the spring structure that plays an elastic decompression and support role; avoid relevant interference during setting. Or, a spring structure that plays an elastic decompression role is provided on the first support structure, and a walking assistance structure is provided on the second support structure. A more preferred implementation is that both the first support structure and the second support structure are provided with a walking assistance structure and a spring structure, and the elastic support force of the spring structure of the first support structure is greater than that of the spring structure of the second support structure; such a setting can ensure effective decompression on the inner side of the knee joint and ensure the balance of the walking assistance force during walking.

[0021] Furthermore, the walking assistance structure includes a first rotating disc and a second rotating disc. The first rotating disc and the second rotating disc are rotatably connected by a rotating shaft. After the first rotating disc and the second rotating disc are combined, a cavity is formed, and a scroll spring is arranged in the cavity; when the knee joint changes from the flexion position to the extension position, the walking assistance structure accumulates potential energy through the scroll spring, and the accumulated potential energy helps the knee joint to move from the extension position to the flexion position. Or, the first rotating disc and the second rotating disc are connected by a rotating shaft, and a torsion spring is arranged at the position of the rotating shaft to accumulate potential energy.

[0022] Technical effects

[0023] By integrating the walking assistance structure that plays a walking assistance role and the structure that plays an elastic decompression role onto the first support structure and / or the second support structure between the two fixing rings, the effective integration of the two functions is realized, and it can be well exerted after the patient's knee joint is damaged.

[0024] By setting the two support rods of the first support structure in a sleeved manner, and constructing it into a telescopic rod with a damping effect, and cooperating with the outer spring structure, it ensures an effective shock absorption and buffering effect on the basis of playing an elastic support role.

[0025] By setting the adjusting threaded section and the adjusting ring with threaded holes on the outside, the effective adjustment of the elastic support force can be achieved, and it can be adjusted according to the patient's recovery situation and the severity of wear. The adjustment is simple and convenient.

[0026] By setting the upper fixing ring and the lower fixing ring as a soft open-loop structure and cooperating with fixing columns arranged on the fixing ring, and setting the fixing columns on the hard plate of the fixing ring, the flexibility of the upper and lower fixing rings can be greatly guaranteed, and the stability of the first support structure and the second support structure in playing the support role can be ensured. Brief Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of the embodiment in which the first support structure and the second support structure of the present invention are the same or not similar;

[0028] Figure 2 It is a schematic diagram of the overall structure of the embodiment in which the first support structure and the second support structure of the invention are similar;

[0029] Figure 3 Figure A is a schematic cross-sectional structure diagram of the walking aid structure corresponding to box A in the overall drawing of the present invention, in which a cross-sectional structure diagram showing the overall state of the first rotating disc is shown;

[0030] Figure 3 Figure B is a schematic cross-sectional structure diagram of the walking aid structure corresponding to box A in the overall drawing of the present invention, in which a cross-sectional structure diagram showing the longitudinal sections of the first rotating disc, the second rotating disc and the scroll spring is shown;

[0031] Figure 4 It is a schematic diagram of a partial enlarged structure corresponding to box B in the overall drawing of the present invention;

[0032] Figure 5 It is a schematic diagram of the elastic decompression support structure without a spring structure of the present invention;

[0033] Figure 6 It is a schematic longitudinal cross-sectional structure diagram of the elastic decompression support structure without a spring structure of the present invention being a bidirectional elastic damping structure;

[0034] Figure 7 It is a schematic longitudinal cross-sectional structure diagram of a partial enlargement of the base with a liquid storage cavity and the piston of the elastic decompression support structure of the present invention;

[0035] Figure 8 It is a schematic longitudinal cross-sectional structure diagram of a partial enlargement of only the base and the piston of the elastic decompression support structure of the present invention;

[0036] Main Reference Numerals Description

[0037] 11. Upper fixing ring; 111. Fixing column; 12. Lower fixing ring; 1301. First support structure; 1302. Second support structure; 1303. Walking assistance structure; 1304. Adjusting thread section; 1305. Adjusting ring; 1306. Rigid plate; 1307. First rotating disc; 1308. Second rotating disc; 1309. Rotating shaft; 1310. Vortex spring.

[0038] 13. Elastic pressure relief support structure; 131. First part; 1311. Piston; 1312. Rod body; 13111. Second intermediate part; 13112. Throttle valve III; 13113. Throttle valve IV; 132. Second part; 1321. Base; 13211. First intermediate part; 13212. Throttle valve I; 13213. Throttle valve II; 133. Throttle hole; 134. Through hole; 135. Threaded rod; 136. Nut; 137. Spring structure. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0040] In this article, "schematic" means "serving as an example, instance or illustration", and any illustration or implementation manner described as "schematic" in this article should not be interpreted as a more preferred or more advantageous technical solution.

[0041] To make the drawings concise, only the parts related to this application are schematically shown in each drawing, and they do not represent the actual structure of the product. Additionally, to make the drawings concise and easy to understand, in some drawings, for components with the same structure or function, only one of them is schematically shown, or only one of them is labeled.

[0042] In this article, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "a plurality" means two or more; the terms "connection", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] ReferenceFigure 1-4 ; A walking aid for reducing knee joint wear, which includes an upper fixing ring 11, a lower fixing ring 12, a first support structure 1301 and a second support structure 1302.

[0044] The upper fixing ring 11 is arranged in the area between the lower part of the patient's thigh and the knee, and is a soft open-ring structure, on which a magic tape is arranged for adjusting its size. The lower fixing ring 12 is arranged in the area between the upper part of the patient's calf and the knee, and is a soft open-ring structure, on which a magic tape is arranged for adjusting its size.

[0045] The first support structure 1301 is arranged between the upper fixing ring 11 and the lower fixing ring 12, and is arranged on the side corresponding to the inner side of the knee joint. The first support structure 1301 includes two support rods, and a spring structure is arranged between the two support rods. The spring structure provides opposite opening forces for the two support rods to separate relatively. The second support structure 1302 is arranged on the other side between the upper fixing ring 11 and the lower fixing ring 12 relative to the first support structure 1301.

[0046] Among them, referring to Figure 1 , the second support structure 1302 is only provided with support rods that play a supporting role, and a rotating ring is arranged at the position corresponding to the joint rotation in the middle of the support rod. To better play the supporting role of the support rod, the support rod is set as a damping telescopic rod sleeved with each other. Through this setting, it can ensure that the inner knee joint is decompressed, but the outer knee joint is not decompressed, effectively protecting the patient's joint.

[0047] Or, referring to Figure 2 The second support structure 1302 is similar to the first support structure 1301, but the opening force provided by the spring structure on the second support structure 1302 is smaller than that of the first support structure 1301, so that bilateral decompression can be carried out while ensuring the priority decompression effect on the inner side.

[0048] A walking assistance structure 1303 for assisting knee joint flexion is arranged at the bending position corresponding to the joints of the first support structure 1301 and the second support structure 1302. When the knee joint changes from the flexion position to the straightening position, the walking assistance structure 1303 accumulates potential energy, and the accumulated potential energy assists the knee joint to move from the straightening position to the flexion position. Arranging the walking assistance structure 1303 on both support structures is an implementation manner. Specifically, when implementing, the walking assistance structure 1303 can be arranged on the first support structure 1301 or the second support structure 1302 in an alternative manner. When the walking assistance structure 1303 is arranged in an alternative manner, a rotating joint is arranged on the support structure without the walking assistance structure 1303 to cooperate to play the purpose of support and follow-up movement to ensure the patient's activities.

[0049] The distance between the two fixed rings is defined. Specifically, the distance between the upper fixed ring 11 and the lower fixed ring 12 is 12 cm. This dimension is only one implementation dimension, and the distance can also be any distance between 12 - 15 cm; to meet the need of setting the upper fixed ring 11 at the lower part of the thigh above the patella and the lower fixed ring 12 at the position of the lower leg under the patella, and to ensure the stability of the position after the fixed rings are set.

[0050] Specifically, the implementation manner of the first support structure 1301 that plays an elastic decompression role is that the two sections of the support rod of the first support structure 1301 are sleeved together to form a telescopic rod, and the telescopic rod has a damping force during telescoping, and a spring structure is sleeved outside the telescopic rod; this setting better achieves the shock absorption effect during elastic support. Refer to Figure 1 、 4-7; More specifically, in the way of a telescopic rod simulating a shock absorber device, it is a bi-directional elastic damping structure, which includes a first part 131. The first part 131 includes a piston 1311, and a bi-directional throttle valve is arranged on the piston 1311. It also includes a second part 132. The second part 132 includes a double-layer lumen, namely a middle working chamber and a liquid storage chamber surrounding the working chamber. The piston 1311 reciprocates in the working chamber. A base 1321 with a bi-directional throttle valve is arranged at the bottom of the working chamber. The working chamber is filled with hydraulic oil, and the liquid storage chamber is filled with compressible gas. When the piston 1311 moves relatively close to the base 1321, the throttle valve on the piston 1311 allows the liquid below in the working chamber to enter the upper part and exerts a damping effect through the throttle valve. At the same time, the liquid below in the working chamber enters the liquid storage chamber through the throttle valve on the base 1321 and exerts a damping effect through the throttle valve. The spring structure 137 accumulates potential energy to ensure that the first part 131 and the second part 132 have the power to reset. On the contrary, when the piston 1311 moves relatively away from the base 1321, the throttle valve on the piston 1311 allows the liquid above in the working chamber to enter the lower part and exerts a damping effect through the throttle valve. At the same time, the liquid in the liquid storage chamber flows back to the lower part of the working chamber through the throttle valve on the base 1321 and exerts a damping effect through the throttle valve. Under the dual action of the accumulated elastic potential energy and the body activity force, the elastic decompression support structure 13 resets, and due to the existence of the damping effect, rapid reset is avoided, ensuring the comfort of the patient's activities. A sealing structure is arranged at the first end of the second part 132 to ensure that there is no liquid leakage when the first part 131 moves relatively to the second part 132. The first end of the base 1321 is the end facing the working chamber, and the second end of the base 1321 is the end facing the liquid storage chamber. The base 1321 includes an intermediate part one 13211 with a through hole 134. A throttle valve flap one 13212 is arranged at the first end of the base 1321, and a throttle valve flap two 13213 is arranged at the second end of the base 1321. Throttle holes 133 are arranged on both the throttle valve flap one 13212 and the throttle valve flap two 13213. The position of the throttle hole 133 is not consistent with that of the through hole 134, and there is a gap between the part of the through hole 134 and the throttle valve flap one 13212 and the throttle valve flap two 13213 to ensure that the throttled liquid enters the through hole 134 through the throttle hole 133. This way can achieve the purpose of bi-directional throttling. More specifically, the throttle holes 133 on the throttle valve flap one 13212 and the throttle valve flap two 13213 are arranged in an array on concentric circles with different diameters compared with the through hole 134.More specifically, a threaded hole is provided in the middle part 13211, and a threaded rod 135 with an end cap is arranged in the threaded hole. Central holes are provided in the throttle valve 13212 and the throttle valve 13213, and the threaded rod 135 passes through the central holes. A nut 136 is also provided to fix all parts. The throttle valve 13212, the middle part 13211 and the throttle valve 13213 are sequentially arranged on the threaded rod 135, and then the nut 136 is screwed onto the screw rod to lock the positional relationship of all parts. The edge of the base 1321 is fixedly arranged on the side wall of the working chamber in a sealed contact manner. Both the throttle valve 13212 and the throttle valve 13213 can be provided with double-layer valves, and throttle holes 133 are provided on each layer of the valve, and the throttle holes 133 on both sides of the valve do not coincide. This setting can increase the throttling effect and can be set according to the patient's condition during use. The first part 131 includes a rod body 1312 and a piston 1311. The rod body 1312 and the piston 1311 reciprocate in the working chamber. The first end of the piston 1311 is the end facing upward in the working chamber, and the second end of the piston 1311 is the end facing downward in the working chamber; a throttle valve 13112 is arranged at the first end of the piston 1311, and a throttle valve 13113 is arranged at the second end of the piston 1311. Throttle holes 133 are provided on both the throttle valve 13112 and the throttle valve 13113. The position of the throttle hole 133 does not coincide with that of the through hole 134, and there is a gap between the through hole 134 and the throttle valve 13112 and the throttle valve 13113 to ensure that the throttling liquid enters the through hole 134 through the throttle hole 133; this method can achieve the purpose of two-way throttling; more specifically, the throttle holes 133 on the throttle valve 13112 and the throttle valve 13113 are arranged in an array on concentric circles with different diameters compared with the through hole 134. More specifically, a threaded hole is provided in the middle part 13111, and a threaded rod 135 is arranged in the threaded hole. The threaded rod 135 is integrally connected with the rod body 1312, and the diameter of the threaded rod 135 is smaller than that of the rod body 1312; central holes are provided in the throttle valve 13112 and the throttle valve 13113, and the threaded rod 135 passes through the central holes. A nut 136 is also provided at the end of the threaded rod 135 facing downward in the working chamber to fix all parts. The throttle valve 13112, the middle part 13111 and the throttle valve 13113 are sequentially arranged on the threaded rod 135, and then the nut 136 is screwed onto the screw rod to lock the positional relationship of all parts. More specifically, both the throttle valve 13112 and the throttle valve 13113 can be provided with double-layer valves, and throttle holes 133 are provided on each layer of the valve, and the throttle holes 133 on both sides of the valve do not coincide. This setting can increase the throttling effect and can be set according to the patient's condition during use.

[0051] In addition, since different patients require different elastic support forces, the elastic force of the spring structure is set to be adjustable. The specific implementation method is as follows: The mutually sleeved support rods of the telescopic rod of the first support structure 1301 are defined as the outer support rod and the inner support rod. Refer to Figure 1 and Figure 3 ; among them, an adjustment thread section 1304 is provided on the outer support rod, and an adjustment ring 1305 with a threaded hole that is always in contact with the spring is provided outside the adjustment thread section 1304. The spring is sleeved outside the inner support rod; the adjustment ring 1305 rotates along the adjustment thread section 1304. By rotating to different positions of the adjustment thread section 1304, the telescopic degree of the spring is adjusted, and thus the support force is adjusted, so as to ensure the adjustment of the support force according to the wear degree during the patient's recovery process. The length range of the adjustment thread section 1304 is 2 cm, and of course it can be any distance from 1 to 3 cm. Through the above method, the requirements of different patients for the support force can be met. In addition, a pressure sensor is provided at the contact position between the adjustment ring 1305 and the spring to measure the elastic force exerted by the spring structure on the adjustment ring 1305; and the elastic force is transmitted wirelessly, so that targeted adjustment can be made according to the relationship between the patient's condition and the required support force, forming an effective treatment means. More specifically, a protrusion is provided on the adjustment ring 1305 for convenient adjustment.

[0052] How to connect the two fixing rings and the two support structures is also a problem to be solved. Because the fixing ring is a soft ring during the process, if the support structure is directly set on the soft ring, the generated elastic support force will be dissipated by the soft ring. Therefore, even if an elastic support structure is set, the elastic decompression effect will not be well exerted. Therefore, the following settings are made. Specifically, fixing columns 111 protrude from both sides of the upper fixing ring 11 and the lower fixing ring 12, and the fixing columns 111 on the same side are rotatably connected to the first support structure 1301 or the second support structure 1302 on the corresponding side; hard plates 1306 are provided on both sides of the upper fixing ring 11 and the lower fixing ring 12, and the fixing columns 111 protrude from the hard plates 1306. The hard plates 1306 are arranged on the longitudinal axis of the entire fixing ring. Through this method, the purpose of effective support force can be achieved, and the problem of the elastic force being dissipated by the soft ring can be avoided.

[0053] The specific implementation method of the walking assistance structure 1303 is as follows. Refer to Figure 3A and 3B; The walking assistance structure 1303 includes a first rotating disc 1307 and a second rotating disc 1308. The first rotating disc 1307 and the second rotating disc 1308 are rotationally connected through a rotating shaft 1309. A cavity is formed after the combination of the first rotating disc 1307 and the second rotating disc 1308, and a scroll spring 1310 is arranged in the cavity; when the knee joint changes from the flexion position to the extension position, the walking assistance structure 1303 stores potential energy through the scroll spring 1310, and the stored potential energy helps the knee joint to move from the extension position to the flexion position. Alternatively, the first rotating disc 1307 and the second rotating disc 1308 are connected through a rotating shaft 1309, and a torsion spring is arranged at the position of the rotating shaft 1309 to store potential energy (not shown in the drawings) without affecting the understanding of the solution.

[0054] As described above, it is only the specific implementation manner of the present application. Under the above teaching of the present application, those skilled in the art can make other improvements or deformations on the basis of the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the present application, and the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A walking aid device for reducing knee joint wear, characterized in that It includes: An upper fixing ring, which is arranged in the area between the lower part of the patient's thigh and the knee and is an adjustable ring; A lower fixing ring, which is arranged in the area between the upper part of the patient's calf and the knee and is an adjustable ring. A first support structure, which is arranged between the upper fixing ring and the lower fixing ring and on the side corresponding to the inner side of the knee joint. The first support structure includes two support rods, and a spring structure is arranged between the two support rods. The spring structure provides opposite opening forces for the two support rods to separate relatively; A second support structure, which is arranged on the other side between the upper fixing ring and the lower fixing ring relative to the first support structure. A walking assistance structure for assisting the flexion of the knee joint is arranged at the bending position corresponding to the joint of the first support structure and / or the second support structure. When the knee joint changes from the flexion position to the extension position, the walking assistance structure stores potential energy, and the stored potential energy assists the knee joint to move from the extension position to the flexion position.

2. The walking aid device according to claim 1, characterized in that, The distance between the upper fixing ring and the lower fixing ring is 12 cm - 15 cm.

3. The walking aid device according to claim 1, characterized in that, The two support rods of the first support structure are sleeved together to form a telescopic rod, and the telescopic movement of the telescopic rod has a damping force. The spring structure is sleeved outside the telescopic rod.

4. The walking aid device according to claim 3, characterized in that, The mutually sleeved support rods are divided into an outer support rod and an inner support rod. An adjustment thread section is arranged on the outer support rod, and an adjustment ring with a threaded hole that is always in contact with the spring is arranged outside the adjustment thread section. The spring is sleeved outside the inner support rod; the adjustment ring rotates along the adjustment thread section, and when it rotates to different positions of the adjustment thread section, the adjustment of the spring expansion degree is realized, and thus the adjustment of the support force is realized; Preferably, the length range of the adjustment thread section is 1 - 3 cm.

5. The walking aid device according to claim 4, characterized in that, A pressure sensor is arranged at the contact position between the adjustment ring and the spring for measuring the elastic force exerted by the spring structure on the adjustment ring.

6. The walking aid device according to claim 3, characterized in that, Both the upper fixing ring and the lower fixing ring are set as soft open-loop structures, and the size adjustment is carried out by setting Velcro.

7. The walking aid device according to claim 6, wherein, Fixing columns extend from both sides of the upper fixing ring and the lower fixing ring, and are rotatably connected to the first support structure or the second support structure on the corresponding side of the fixing columns on the same side; hard plates are arranged on both sides of the upper fixing ring and the lower fixing ring, and the fixing columns extend from the hard plates.

8. The walking aid device according to claim 3, characterized in that, A walking assistance structure is arranged on the first support structure, and the walking assistance structure is arranged on the outer support rod; or, a spring structure that plays an elastic decompression role is arranged on the first support structure, and a walking assistance structure is arranged on the second support structure.

9. The walking aid device according to claim 3, characterized in that, Walking assistance structures and spring structures are arranged on both the first support structure and the second support structure, and the elastic support force of the spring structure of the first support structure is greater than the elastic support force of the spring structure of the second support structure.

10. The walking aid device according to claim 3, characterized in that, The walking assistance structure includes a first rotating disc and a second rotating disc. The first rotating disc and the second rotating disc are rotatably connected through a rotating shaft. After the first rotating disc and the second rotating disc are combined, a cavity is formed, and a scroll spring is arranged in the cavity; or, the first rotating disc and the second rotating disc are connected through a rotating shaft, and a torsion spring is arranged at the position of the rotating shaft to store potential energy.

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