Ankle joint artificial limb adjusting mechanism

Abstract

The utility model discloses an ankle joint artificial limb adjusting mechanism which comprises an ankle joint artificial limb, at least two gears are arranged in the ankle joint artificial limb and correspond to each other, one side of each gear is fixedly connected with a supporting shaft, the lower half portion of each supporting shaft is fixedly connected with a driving pulley, and the lower half portion of each supporting shaft is fixedly connected with a driving pulley. The end, away from the gear, of the supporting shaft is rotationally connected with the ankle joint artificial limb, the driving pulley is connected with a screw in a meshed mode, a driven pulley is arranged on one side of the driving pulley, a guiding pulley is arranged on one side of the driven pulley, and a stress pulley is arranged on one side of the guiding pulley. The stress pulley and the guide pulley are installed at the corresponding positions. According to the ankle joint prosthesis, the supporting plate is arranged and can rotate by a certain angle according to the size of a shoe, so that the ankle joint prosthesis can be tightly attached to the shoe, the situation that a user is hurt due to the fact that the shoe falls off or loosens in the walking process is avoided, and the wearing stability of the ankle joint prosthesis is improved.

Description

Technical Field

[0001] This utility model relates to the field of ankle joint prosthesis technology, and in particular to an ankle joint prosthesis adjustment mechanism. Background Technology

[0002] An ankle prosthesis is a device used to replace a missing ankle or foot joint.

[0003] To achieve aesthetic appeal and psychological comfort, ankle prostheses are typically worn inside shoes after being fitted onto the leg. However, since ankle prostheses are manufactured in uniform sizes, and different users have different shoe sizes, the prosthesis may not fit snugly in the shoe. This can cause the shoe to slip off or become loose during walking or exercise, potentially leading to injury. The usual solution is to add socks or other padding to maintain a snug fit, but this is quite cumbersome to wear.

[0004] Therefore, we provide an ankle prosthesis adjustment mechanism. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing an ankle joint prosthesis adjustment mechanism that achieves stability, strong adaptability, and ease of wear after being worn.

[0006] In view of this, the present invention provides an ankle joint prosthesis adjustment mechanism, including an ankle joint prosthesis. The ankle joint prosthesis has gears inside, at least two gears that correspond to each other. A support shaft is fixedly connected to one side of each gear. An active pulley is fixedly connected to the lower half of the support shaft. The end of the support shaft away from the gears is rotatably connected to the ankle joint prosthesis. A screw is meshed with the active pulley. A driven pulley is provided on one side of the active pulley, a guide pulley on one side of the driven pulley, and a force-bearing pulley on one side of the guide pulley. The force-bearing pulley and the guide pulley are installed in corresponding positions. A fixed frame is provided through the inner wall of the ankle joint prosthesis on opposite sides. A rotating shaft is rotatably connected to the inner wall of the fixed frame on opposite sides. A support plate is fixedly connected to the outer side of the middle of the rotating shaft.

[0007] Preferably, the inner wall of the ankle joint prosthesis has a walking groove, and the inside of the walking groove is connected to the inside of the fixing frame.

[0008] Preferably, a spring is fixedly connected to one side of the inner wall of the walking groove, and a walking rod is fixedly connected to the other end of the spring.

[0009] Preferably, the walking rod is inserted into the walking groove, and the end of the walking rod away from the walking groove is fixedly connected to the support plate.

[0010] Preferably, a support block is rotatably connected to one end of the screw, and the screw is rotatably connected to one side of the ankle joint prosthesis.

[0011] Preferably, the screw extends to the outside of the ankle joint prosthesis, and a rotating handle is fixedly installed at the end of the screw away from the support block.

[0012] Preferably, a rotating handle is fixedly installed at the end of the screw away from the support block, and there are at least two rotating handles in a symmetrical manner.

[0013] Compared with the prior art, the present invention provides an ankle joint prosthesis adjustment mechanism, which has the following beneficial effects:

[0014] This invention, by setting a support plate that rotates at a certain angle according to the size of the shoe, allows the ankle prosthesis to fit snugly against the shoe, preventing the shoe from falling off or loosening during walking and causing injury to the user. This improves the wearing stability and adaptability of the ankle prosthesis.

[0015] This invention, by setting up an active pulley, a driven pulley, a guide pulley, and a force-bearing pulley, enables the traction rope to achieve a labor-saving effect during the pulling process, while also making it more convenient to wear.

[0016] This invention, by combining a screw and a gear, enables the screw to rotate while preventing the gear from rotating. This prevents the support plate from rotating after the ankle prosthesis is worn, thus preventing it from falling off during walking and further improving the stability of the ankle prosthesis.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an ankle joint prosthesis adjustment mechanism proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the control component structure of an ankle joint prosthesis adjustment mechanism proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the transmission component structure of an ankle joint prosthesis adjustment mechanism proposed in this utility model;

[0021] Figure 4 This is an enlarged schematic diagram of the structure at point A of the ankle joint prosthesis adjustment mechanism proposed in this utility model;

[0022] Figure 5 This is an enlarged schematic diagram of section B of the ankle joint prosthesis adjustment mechanism proposed in this utility model.

[0023] In the diagram: 1. Ankle joint; 2. Screw; 3. Gear; 4. Support shaft; 5. Driving pulley; 6. Driven pulley; 7. Guide pulley; 8. Support plate; 9. Rotating shaft; 10. Force-bearing pulley; 11. Support block; 12. Rotating handle; 13. Traveling groove; 14. Spring; 15. Fixed frame; 16. Traveling rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Example 1: An ankle joint prosthesis adjustment mechanism, such as Figures 1-5 As shown, the device includes an ankle joint prosthesis 1. The ankle joint prosthesis 1 contains at least two gears 3, which correspond to each other. Each gear 3 has a support shaft 4 fixedly connected to one side. The lower half of the support shaft 4 is fixedly connected to an active pulley 5. The end of the support shaft 4 away from the gears 3 is rotatably connected to the ankle joint prosthesis 1. The active pulley 5 is meshed with a screw 2. A guide pulley 7 is located on one side of the active pulley 5, a driven pulley 6 is located on one side of the guide pulley 7, and a force-bearing pulley 10 is located on one side of the driven pulley 6. The force-bearing pulley 10 and the driven pulley 6 are installed in corresponding positions. A fixing frame 15 is provided through the inner wall of the ankle joint prosthesis 1 on opposite sides. A rotating shaft 9 is rotatably connected to the inner wall of the fixing frame 15 on opposite sides. A support plate 8 is fixedly connected to the outer side of the middle part of the rotating shaft 9.

[0027] After the ankle prosthesis 1 is installed on the leg, it needs to be put into the shoe. First, the screw 2 starts to rotate when manually turned. At this time, the gear 3 meshing with it starts to rotate, and the support shaft 4 starts to rotate along with the gear 3. When the support shaft 4 starts to rotate, the driving pulley 5 starts to rotate. At this time, the traction rope fixed to the driving pulley 5 starts to wind up. As the traction rope winds up, it pulls the driven pulley 6 to start rotating. When the driven pulley 6 starts to rotate, it drives the traction rope to pull the guide pulley 7 to start rotating. The guide pulley 7 changes the direction of the traction rope tension and makes the traction rope... Pulling the force-bearing pulley 10 starts it to rotate, and at the same time, the traction rope is fixed to several support plates 8. When the traction rope is pulled, it begins to exert tension on the support plates 8. At this time, the support plates 8, under the pull of the tension, begin to rotate under the support of the rotating shaft 9 within the fixed frame 15. At this time, one end of the support plate 8 connected to the traction rope rotates inward toward the ankle joint prosthesis 1, and the other end rotates outward toward the ankle joint prosthesis 1. Observe the scale on the support plates 8; the scale indicates the shoe size. When the support plate 8 rotates to reveal the required shoe size, the rotation stops and the screw is pulled back. 2. Simultaneously, several support plates 8 stop rotating, allowing the ankle prosthesis 1 to be slipped into the shoe. When the support plates 8 need to be retracted, the screw 2 is reversed, and the active pulley 5 also reverses. At this point, the traction rope begins to loosen, and when the support plates 8 lose the tension of the traction rope, they rotate back to their initial state under the support of the spring. By setting the support plates 8 to rotate at a certain angle according to the shoe size, the ankle prosthesis 1 can fit snugly against the shoe, preventing the shoe from slipping off or loosening during walking, thus avoiding injury to the user and improving performance. The ankle prosthesis 1 improves its wearing stability and adaptability. By setting up an active pulley 5, a driven pulley 6, a guide pulley 7, and a force-bearing pulley 10, the traction rope can achieve a labor-saving effect during the pulling process, while making wearing more convenient. By setting up a combination of screw 2 and gear 3, it can drive gear 3 to rotate, while gear 3 cannot drive screw 2 to rotate. Therefore, after the ankle prosthesis 1 is worn, the support plate 8 will not rotate, preventing it from falling off during walking, thereby further improving the wearing stability of the ankle prosthesis 1.

[0028] like Figures 1-5 As shown, the inner wall of the ankle joint prosthesis 1 has a walking groove 13, and the inside of the walking groove 13 is connected to the inside of the fixing frame 15.

[0029] A spring 14 is fixedly connected to one side of the inner wall of the walking groove 13, and a walking rod 16 is fixedly connected to the other end of the spring 14.

[0030] The walking rod 16 is inserted into the walking groove 13, and the end of the walking rod 16 away from the walking groove 13 is fixedly connected to the support plate 8.

[0031] When the support plate 8 is pulled by the traction rope, it begins to rotate. At this time, the walking rod 16 follows the rotation of the support plate 8 and begins to move within the walking groove 13 on the ankle prosthesis 1. Simultaneously, the spring 14 within the walking groove 13 is pushed by the walking rod 16 and begins to contract. When the support plate 8 rotates to the desired angle, the screw 2 stops rotating, and the support plate 8 stops rotating. When it is necessary to retract the support plate 8, the screw 2 is reversed, and the drive pulley 5 begins to reverse. At this time, the traction rope begins to slacken, and the traction rope loses its support to the support plate 8. The tension is applied, and at the same time, the spring 14 in the walking groove 13 loses the pushing force of the walking rod 16. At this time, the spring 14 begins to stretch, pushing the walking rod 16 to move within the walking groove 13. The walking rod 16 then pushes the support plate 8 to start rotating, while the screw 2 continues to rotate, and the traction rope continues to loosen. The support plate 8 continues to rotate until it returns to its initial position. By setting the spring 14, it can provide power when the support plate 8 returns to its initial state, ensuring the normal operation of the support plate 8, thereby improving the stability of the ankle prosthesis 1.

[0032] like Figures 1-5 As shown, a support block 11 is rotatably connected to one end of the screw 2, and the screw 2 is rotatably connected to one side of the ankle joint prosthesis 1.

[0033] The screw 2 extends to the outside of the ankle prosthesis 1, and a rotating handle 12 is fixedly installed at the end of the screw 2 away from the support block 11.

[0034] A rotating handle 12 is fixedly installed at the end of the screw 2 away from the support block 11. There are at least two rotating handles 12, and they are symmetrical.

[0035] When it is necessary to adjust the ankle prosthesis 1 to fit the shoe size, first turn the rotating handle 12. At this time, the screw 2, supported by the support block 11 on the ankle prosthesis 1, will start to rotate with the rotating handle 12. When it is necessary to restore the support plate 8 to the initial state, turn the rotating handle 12 in reverse. At this time, the screw 2 will start to rotate in reverse, and the active pulley 5 will start to rotate in reverse. At this time, the traction rope will start to loosen, and the support plate 8 will start to rotate under the support of the spring 14 until it is restored to the initial state.

[0036] Working principle: After the ankle prosthesis 1 is installed on the leg, it needs to be put into the shoe. Turning the rotating handle 12 causes the screw 2 to rotate, the gear 3 to rotate, the driving pulley 5 to rotate, the traction rope to start winding, the driven pulley 6 to rotate, the guide pulley 7 to rotate, the force-bearing pulley 10 to rotate, several support plates 8 to rotate, the walking rod 16 to start moving, and the spring 14 to contract. When it is necessary to retract the support plate 8, turn the rotating handle 12 in reverse. The screw 2 to rotate in reverse, the driving pulley 5 to rotate in reverse, the traction rope to start slack, the support plate 8 to lose tension, the walking rod 16 to lose the thrust on the spring 14, the spring 14 to extend, the support plate 8 to rotate, the walking rod 16 to start moving, the screw 2 to continue rotating, the traction rope to continue slack, and the support plate 8 to continue rotating until it rotates to the initial position.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ankle joint prosthesis adjustment mechanism, comprising an ankle joint prosthesis (1), characterized in that, The ankle joint prosthesis (1) is provided with gears (3) inside. There are at least two gears (3) and they correspond to each other. A support shaft (4) is fixedly connected to one side of each of the two gears (3). An active pulley (5) is fixedly connected to the lower half of the support shaft (4). The end of the support shaft (4) away from the gear (3) is rotatably connected to the ankle joint prosthesis (1). A screw (2) is meshed with the active pulley (5). A driven pulley (6) is provided on one side of the active pulley (5). A guide pulley (7) is provided on one side of the driven pulley (6). A force-bearing pulley (10) is provided on one side of the guide pulley (7). The force-bearing pulley (10) and the guide pulley (7) are installed in corresponding positions. A fixed frame (15) is provided through the inner wall of the ankle joint prosthesis (1) on both sides. A rotating shaft (9) is rotatably connected to the inner wall of the fixed frame (15) on both sides. A support plate (8) is fixedly connected to the outer side of the middle part of the rotating shaft (9).

2. The ankle joint prosthesis adjustment mechanism according to claim 1, characterized in that, The inner wall of the ankle joint prosthesis (1) is provided with a walking groove (13), and the inside of the walking groove (13) is connected to the inside of the fixing frame (15).

3. The ankle joint prosthesis adjustment mechanism according to claim 2, characterized in that, A spring (14) is fixedly connected to one side of the inner wall of the walking groove (13), and a walking rod (16) is fixedly connected to the other end of the spring (14).

4. The ankle joint prosthesis adjustment mechanism according to claim 3, characterized in that, The walking rod (16) is inserted into the walking groove (13), and the end of the walking rod (16) away from the walking groove (13) is fixedly connected to the support plate (8).

5. The ankle joint prosthesis adjustment mechanism according to claim 4, characterized in that, One end of the screw (2) is rotatably connected to a support block (11), and the screw (2) is rotatably connected to one side of the ankle joint prosthesis (1).

6. The ankle joint prosthesis adjustment mechanism according to claim 5, characterized in that, The screw (2) extends to the outside of the ankle joint prosthesis (1), and a rotating handle (12) is fixedly installed at the end of the screw (2) away from the support block (11).

7. The ankle joint prosthesis adjustment mechanism according to claim 6, characterized in that, A rotating handle (12) is fixedly installed at the end of the screw (2) away from the support block (11). There are at least two rotating handles (12), and they are symmetrical.

Images