Adjustable artificial limb ankle joint

Abstract

The utility model relates to the technical field of artificial limb ankle joints, and discloses an adjustable artificial limb ankle joint which comprises a main body support and an artificial limb foot plate, and further comprises a shaft rod structure and a connecting rod structure, the first hole site is formed in the main body bracket; the two second hole sites are both formed in the prosthetic foot plate, and the shaft rod structure penetrates through the first hole site and the two second hole sites; and the lubricating structure is arranged on the main body bracket. When the adjustable artificial limb ankle joint lubricating device is used, a user can lubricate the adjustable artificial limb ankle joint only by rotating the threaded rod, complex operation or additional tools are not needed, and therefore the adjustable artificial limb ankle joint lubricating device is very convenient to use, and convenience is provided for use of the artificial limb ankle joint.

Description

Technical Field

[0001] The utility model relates to the technical field of prosthetic ankle joints, in particular to an adjustable prosthetic ankle joint. Background Art

[0002] An adjustable prosthetic ankle joint is a prosthetic component that can be adjusted according to the needs of the user. It is usually used in the ankle joint of lower limb prostheses. The main purpose of this joint design is to provide a more personalized, comfortable and functional prosthetic solution.

[0003] After searching, the Chinese patent with publication number CN216365441U discloses a prosthetic ankle joint, including a base plate, and the base plate is a Z-shaped structure with an obtuse angle, a top surface is fixedly connected to the upper front end of the base plate, and two fixing plates are fixedly connected to the upper rear end, a transmission rod is slidably embedded in the front end of the base plate, and the transmission rod is elastically connected to the base plate through an extrusion spring, the transmission rod and the spur gear are matched through the meshing of the spur gear and the row of teeth, and a first bevel gear is arranged between the two fixing plates. The above scheme is through the transmission rod being slidably embedded in the front end of the base plate, and a spur gear meshing and connected to the transmission rod is arranged on the inner side of the transmission rod. Since the second bevel gear and the spur gear are connected by a connecting rod transmission, when the spur gear rotates, the second bevel gear meshes and drives the first bevel gear to rotate, and since the first bevel gear is fixedly connected between the rotating shaft and the fixing plate, the base plate rotates downward around the rotating shaft during walking, providing a forward thrust to the calf position, thereby improving the flexibility during walking. However, the above scheme still has the following shortcomings when it is actually used:

[0004] During the use of the prosthetic ankle joint, its axial connection will wear and need to be lubricated regularly. The prosthetic ankle joint structure proposed in the above scheme does not have the lubrication function, and the user is required to disassemble the prosthetic ankle joint for lubrication, which is cumbersome in actual operation. In addition, disassembling the prosthetic ankle joint and lubricating it requires certain technical requirements, and not all users are able to operate it skillfully. Improper operation may cause damage to the prosthetic joint components or improper assembly, which in turn affects the use effect and safety of the prosthetic ankle joint.

[0005] Therefore, it is necessary to design an adjustable prosthetic ankle joint to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes an adjustable prosthetic ankle joint.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The adjustable prosthetic ankle joint comprises a main frame and a prosthetic foot plate, and also comprises:

[0009] Shaft rod structure, the main body bracket and the prosthetic foot plate are rotatably connected through the shaft rod structure;

[0010] First hole position, the first hole position is opened on the main body bracket;

[0011] Two second hole positions, both of the two second hole positions are opened on the prosthetic foot plate, and the shaft rod structure passes through the first hole position and the two second hole positions;

[0012] Lubrication structure, the lubrication structure is arranged on the main body bracket.

[0013] As a preferred technical solution of the present utility model, the shaft rod structure includes:

[0014] Rod body;

[0015] Cavity, the cavity is opened inside the rod body;

[0016] Two limit caps, the two limit caps are respectively fixed at both ends of the rod body;

[0017] A plurality of openings, the plurality of openings are all opened on the outer surface of the rod body, and each opening is communicated with the cavity;

[0018] A plurality of sleeves, the plurality of sleeves are all fixed on the rod body, and the plurality of sleeves are all located between the two limit caps.

[0019] As a preferred technical solution of the present utility model, the lubrication structure includes:

[0020] Sealing cylinder, the sealing cylinder is fixed on the main body bracket, and a threaded port is opened on the top surface of the sealing cylinder;

[0021] Sliding plug, the sliding plug is hermetically and slidably connected to the inner surface of the sealing cylinder;

[0022] Threaded rod, one end of the threaded rod is rotatably connected to the sliding plug, the threaded rod passes through the threaded port and is threadedly sleeved in the threaded port;

[0023] Lubricating medium, the lubricating medium is placed between the sealing cylinder and the sliding plug;

[0024] Communication pipe, one end of the communication pipe is communicated with the sealing cylinder, and the other end of the communication pipe is communicated with the cavity.

[0025] As a preferred technical solution of the present utility model, an elbow is arranged at one end of the threaded rod located outside the sealing cylinder.

[0026] As a preferred technical solution of the present utility model, the sizes of the first hole position and the second hole position are the same. The outer surfaces of the two limiting caps are respectively fitted with the inner surfaces of the two second hole positions, and the outer surface of each sleeve is fitted with the inner surface of the first hole position.

[0027] As a preferred technical solution of the present utility model, an adjusting structure is provided on the main body bracket.

[0028] The present utility model has the following beneficial effects:

[0029] 1. Simple operation: The user can lubricate the adjustable prosthetic ankle joint by simply rotating the threaded rod, without complex operations or additional tools, so it is very convenient and provides convenience for the use of the prosthetic ankle joint.

[0030] 2. Uniform lubrication: The lubricating medium is pressed into the interior of the cavity through the connecting pipe, and then flows out through several openings and is uniformly attached to the inner surfaces of the first hole position and the two second hole positions. This ensures the uniform distribution of the lubricating medium, thereby improving the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic plan view of the adjustable prosthetic ankle joint proposed by the present utility model;

[0032] Figure 2 is an exploded schematic view of the adjustable prosthetic ankle joint proposed by the present utility model;

[0033] Figure 3 is a schematic cross-sectional view of the main body bracket and the prosthetic foot plate;

[0034] Figure 4 is a schematic view of the shaft rod structure;

[0035] Figure 5 is a schematic cross-sectional view of the shaft rod structure;

[0036] Figure 6 is Figure 1 an enlarged view of the structure at A of

[0037] In the figure: 1 main body bracket, 2 prosthetic foot plate, 3 shaft rod structure, 31 rod body, 32 cavity, 33 limiting cap, 34 opening, 35 sleeve, 4 first hole position, 5 second hole position, 6 adjusting structure, 71 sealing cylinder, 72 sliding plug, 73 threaded rod, 74 lubricating medium, 75 connecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0039] Embodiment 1

[0040] Referring to Figures 1-6 , an adjustable prosthetic ankle joint includes a main body bracket 1 and a prosthetic foot plate 2. An adjustment structure 6 is provided on the main body bracket 1. The adjustment structure 6 is used to adjust the softness and hardness of the shock absorption of the prosthetic ankle joint to improve the applicability of the prosthetic ankle joint. The specific structure and working principle of the adjustment structure 6 are prior art and are not the innovative part of this technical solution. They are not shown in the figure and will not be elaborated here. It further includes: a shaft rod structure 3. The main body bracket 1 and the prosthetic foot plate 2 are rotatably connected through the shaft rod structure 3. The shaft rod structure 3 includes: a rod body 31; a cavity 32, the cavity 32 is opened inside the rod body 31; two limit caps 33, the two limit caps 33 are respectively fixed at both ends of the rod body 31, and the two limit caps 33 are used to prevent the rod body 31 from disengaging from the first hole 4 and the two second holes 5; a plurality of openings 34, the plurality of openings 34 are all opened on the outer surface of the rod body 31, and each opening 34 is communicated with the cavity 32; a plurality of sleeves 35, the plurality of sleeves 35 are all fixed on the rod body 31, and the plurality of sleeves 35 are all located between the two limit caps 33; a first hole 4, the first hole 4 is opened on the main body bracket 1; two second holes 5, the two second holes 5 are both opened on the prosthetic foot plate 2. The shaft rod structure 3 passes through the first hole 4 and the two second holes 5. The sizes of the first hole 4 and the second hole 5 are the same. The outer surfaces of the two limit caps 33 are respectively in contact with the inner surfaces of the two second holes 5. The outer surface of each sleeve 35 is in contact with the inner surface of the first hole 4. This design can ensure the connection stability between the main body bracket 1 and the prosthetic foot plate 2. In addition, the design of the sleeve 35 prevents the first hole 4 and the second hole 5 from blocking the openings 34, so that the lubricating medium 74 can flow out smoothly through the openings 34. In addition, the lubricating medium 74 uses lubricating oil, and the lubricating oil has high fluidity and is convenient to uniformly adhere to the inner surfaces of the first hole 4 and the second hole 5, thereby improving the lubrication effect;

[0041] The adjustable prosthetic ankle joint further includes a lubricating structure, which is arranged on the main body bracket 1. The lubricating structure includes: a sealing cylinder 71, which is fixed on the main body bracket 1, and a threaded port is opened on the top surface of the sealing cylinder 71; a sliding plug 72, which is hermetically and slidably connected to the inner surface of the sealing cylinder 71; a threaded rod 73, one end of the threaded rod 73 is rotatably connected to the sliding plug 72, the threaded rod 73 passes through the threaded port and is threadedly sleeved in the threaded port, and an elbow is arranged at one end of the threaded rod 73 located outside the sealing cylinder 71; a lubricating medium 74, which is placed between the sealing cylinder 71 and the sliding plug 72; a connecting pipe 75, one end of the connecting pipe 75 is communicated with the sealing cylinder 71, and the other end of the connecting pipe 75 is communicated with the cavity 32. When the threaded rod 73 rotates, it can move on the sealing cylinder 71, so that the threaded rod 73 drives the sliding plug 72 to move downward. When the sliding plug 72 moves downward, it can press the lubricating medium 74 in the sealing cylinder 71 into the cavity 32 through the connecting pipe 75.

[0042] The specific working principle of the present utility model is as follows:

[0043] When it is necessary to lubricate the adjustable prosthetic ankle joint proposed by the present utility model, the user can rotate the threaded rod 73. When the threaded rod 73 rotates, it can move on the sealing cylinder 71, so that the threaded rod 73 drives the sliding plug 72 to move downward. When the sliding plug 72 moves downward, it can press the lubricating medium 74 in the sealing cylinder 71 into the cavity 32 through the connecting pipe 75. Further, the lubricating medium 74 will flow out through a plurality of openings 34 and adhere to the outer surface of the rod body 31. Then, the user manually moves the adjustable prosthetic ankle joint to make the main body bracket 1 and the prosthetic foot plate 2 rotate relative to each other. Under the rotational action of the main body bracket 1 and the prosthetic foot plate 2, the lubricating medium 74 can be evenly attached to the inner surfaces of the first hole position 4 and the two second hole positions 5, so as to lubricate the connection position between the main body bracket 1 and the prosthetic foot plate 2. Therefore, the user only needs to rotate the threaded rod 73 to lubricate and maintain the adjustable prosthetic ankle joint, and the operation is convenient;

[0044] It is worth noting that a plurality of sleeves 35 are fixed on the rod body 31. The sizes of the first hole position 4 and the second hole position 5 are the same. The outer surfaces of the two limit caps 33 are respectively fitted with the inner surfaces of the two second hole positions 5, and the outer surface of each sleeve 35 is fitted with the inner surface of the first hole position 4. This design can ensure the connection stability between the main body bracket 1 and the prosthetic foot plate 2. In addition, the design of the sleeve 35 prevents the first hole position 4 and the second hole position 5 from blocking the opening 34, so that the lubricating medium 74 can flow out through the opening 34 smoothly. In addition, the lubricating medium 74 is lubricating oil, and the lubricating oil has high fluidity, which is convenient for evenly adhering to the first hole position 4 and the second hole position 5, thereby improving the lubrication effect.

[0045] Embodiment 2

[0046] Different from Embodiment 1, the lubricating medium 74 is a lubricating paste, which has a high viscosity and will not easily flow out from the first hole 4 and the second hole 5, and has a long effective lubrication period. Except for the selection of the lubricating medium 74, other parts in this embodiment are the same as those in Embodiment 1 and will not be elaborated here.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. Adjustable prosthetic ankle joint, comprising a main bracket (1) and a prosthetic foot plate (2), characterized in that, Further comprising: A shaft rod structure (3), the main body bracket (1) and the prosthetic foot plate (2) are rotationally connected through the shaft rod structure (3); A first hole position (4), the first hole position (4) is opened on the main body bracket (1); Two second hole positions (5), both of the two second hole positions (5) are opened on the prosthetic foot plate (2), and the shaft rod structure (3) passes through the first hole position (4) and the two second hole positions (5); A lubrication structure, the lubrication structure is arranged on the main body bracket (1).

2. The adjustable prosthetic ankle joint according to claim 1, characterized in that, The shaft rod structure (3) includes: A rod body (31); A cavity (32), the cavity (32) is opened inside the rod body (31); Two limit caps (33), the two limit caps (33) are respectively fixed at both ends of the rod body (31); A plurality of openings (34), the plurality of openings (34) are all opened on the outer surface of the rod body (31), and each opening (34) is communicated with the cavity (32); A plurality of sleeves (35), the plurality of sleeves (35) are all fixed on the rod body (31), and the plurality of sleeves (35) are all located between the two limit caps (33).

3. The adjustable prosthetic ankle joint according to claim 1, wherein The lubrication structure includes: A sealing cylinder (71), the sealing cylinder (71) is fixed on the main body bracket (1), and a threaded port is opened on the top surface of the sealing cylinder (71); A sliding plug (72), the sliding plug (72) is hermetically and slidably connected to the inner surface of the sealing cylinder (71); A threaded rod (73), one end of the threaded rod (73) is rotationally connected to the sliding plug (72), the threaded rod (73) passes through the threaded port and is threadedly sleeved in the threaded port; A lubricating medium (74), the lubricating medium (74) is placed between the sealing cylinder (71) and the sliding plug (72); A communicating pipe (75), one end of the communicating pipe (75) is communicated with the sealing cylinder (71), and the other end of the communicating pipe (75) is communicated with the cavity (32).

4. The adjustable prosthetic ankle joint according to claim 3, wherein One end of the threaded rod (73) located outside the sealing cylinder (71) is provided with an elbow.

5. The adjustable prosthetic ankle joint according to claim 2, characterized in that, The sizes of the first hole position (4) and the second hole position (5) are the same, the outer surfaces of the two limit caps (33) are respectively fitted with the inner surfaces of the two second hole positions (5), and the outer surface of each sleeve (35) is fitted with the inner surface of the first hole position (4).

6. The adjustable prosthetic ankle joint according to claim 1, characterized in that, An adjusting structure (6) is arranged on the main body bracket (1).

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