Power-assisted carbon fiber hydraulic knee joint prosthesis

Abstract

The utility model discloses a power-assisted type carbon fiber hydraulic knee joint artificial limb, which relates to the technical field of artificial limbs, and comprises a wearing cavity and a supporting leg, the wearing cavity and the supporting leg are provided with an adjusting mechanism for conveniently adjusting the height, and the adjusting mechanism is connected with the wearing cavity and the supporting leg. A locking mechanism facilitating positioning is arranged on the adjusting mechanism, the adjusting mechanism comprises an upper connecting rod, a lower connecting rod and a sleeve rod, the locking mechanism comprises a mounting block and a movable shaft, a hydraulic mechanism is fixedly mounted at the lower end of the wearing cavity, and the upper connecting rod is fixedly mounted at the lower end of the hydraulic mechanism. The gear, the first rack and the second rack are matched, when the length of the device needs to be adjusted, only the pulling plate needs to be pulled and rotated, tools such as a wrench and a screwdriver do not need to be used for loosening, adjusting and then fastening the adjusting position, and the device is convenient in adjusting mode and rapid in resetting.

Description

Technical Field

[0001] The utility model relates to the technical field of prosthetics, and particularly relates to an assistive carbon fiber hydraulic knee joint prosthetic limb. Background Art

[0002] Carbon fiber hydraulic prosthetics is an advanced prosthetic technology that combines carbon fiber materials and hydraulic systems, aiming to provide amputees with more natural and efficient movement capabilities. Carbon fiber is a fiber mainly composed of carbon elements, with extremely high strength and lightweight characteristics. The hydraulic system in the prosthetic limb is mainly used to provide smooth and natural movement control. The core of the hydraulic system is to use liquid to transmit force.

[0003] Currently, existing joint prosthetics (such as patent number: CN209347327U) disclose a muscle-assisted recovery type intelligent prosthetic limb. In this utility model, the doctor remotely diagnoses and adjusts through the cloud server; the hydraulic cylinder, the sensor, and the rechargeable battery are respectively electrically connected to the controller. With the above design, when people use the prosthetic limb, it is convenient for doctors to remotely monitor the usage situation and adjust the prosthetic limb in a timely manner, and give corresponding usage feedback.

[0004] However, in the process of implementing the above technical solution, it is found that there are at least the following technical problems: When the height of the existing prosthetic limb needs to be adjusted during use, it is usually necessary to use tools such as wrenches and screwdrivers to loosen the screws at the fixing points, and then fix them after adjustment, which makes the adjustment steps for the height of the prosthetic limb complicated and time-consuming, and is not convenient for quick adjustment and use. Summary of the Utility Model

[0005] (1) Technical problems to be solved: Aiming at the deficiencies of the prior art, the utility model provides an assistive carbon fiber hydraulic knee joint prosthetic limb, which solves the technical problem that when the height of the existing prosthetic limb needs to be adjusted during use, it is usually necessary to use tools such as wrenches and screwdrivers to loosen the screws at the fixing points, and then fix them after adjustment, which makes the adjustment steps for the height of the prosthetic limb complicated and time-consuming, and is not convenient for quick adjustment and use.

[0006] (2) Technical solutions: To achieve the above purposes, the utility model is realized through the following technical solutions:

[0007] A power-assisted carbon fiber hydraulic knee joint prosthesis, comprising a wearing cavity and a supporting foot. An adjusting mechanism for facilitating height adjustment is provided on the wearing cavity and the supporting foot. A locking mechanism for facilitating positioning is provided on the adjusting mechanism. The adjusting mechanism includes an upper connecting rod, a lower connecting rod and a sleeve rod. The locking mechanism includes a mounting block and a movable shaft. A hydraulic mechanism is fixedly installed at the lower end of the wearing cavity. The upper connecting rod is fixedly installed at the lower end of the hydraulic mechanism. The upper connecting rod and the lower connecting rod are both slidably installed on the inner side wall of the sleeve rod. The mounting block is fixedly installed at the circumferential end of the sleeve rod. A first rack is fixedly installed at the lower end of the upper connecting rod. A second rack is fixedly installed at the upper end of the lower connecting rod. The first rack and the second rack face in opposite directions. The lower end of the lower connecting rod is fixedly installed with a supporting foot. A first circular groove is penetrated and opened at the side end of the sleeve rod. A plurality of limiting grooves are penetrated and opened at the side end of the mounting block. A second circular groove is also penetrated and opened at the side end of the mounting block.

[0008] Preferably: The movable shaft is rotatably installed on the inner side wall of the second circular groove. A mounting rod is fixedly installed at the side end of the movable shaft. A gear is fixedly installed at the circumferential end of the mounting rod. The gear is located on the inner side wall of the sleeve rod. Both the first rack and the second rack are engaged with the gear.

[0009] Preferably: A pull plate is provided on one side of the movable shaft. A spring is fixedly installed between the pull plate and the movable shaft. A telescopic rod is also fixedly installed between the pull plate and the movable shaft. The telescopic rod is located on the inner side wall of the spring. Two limiting rods are fixedly installed at the side end of the pull plate.

[0010] (III)Advantages: 1. By setting the gear, the first rack and the second rack to cooperate, when the length of the device needs to be adjusted, only need to pull and rotate the pull plate, without using tools such as wrenches and screwdrivers to loosen, adjust and fasten the adjustment part. The adjustment method of this device is convenient and the reset is fast.

[0011] 2. By setting the pull plate, the limiting rod and the mounting block to cooperate, after the adjustment is completed, the limiting rod on the pull plate can be clamped in the limiting groove to lock the device, ensuring its safety and stability during wearing and ensuring the wearing comfort. Description of the Drawings

[0012] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the description, the following takes the preferred embodiment of the present invention and combines the drawings to describe in detail as follows.

[0013] Figure 1 It is the structural diagram of the wearing cavity of the present invention;

[0014] Figure 2Structural diagram of the upper connecting rod of the present utility model;

[0015] Figure 3 Structural diagram of the sleeve rod of the present utility model;

[0016] Figure 4 Structural diagram of the pull plate of the present utility model.

[0017] Legend: 1, wearing cavity; 11, hydraulic mechanism; 2, upper connecting rod; 21, first rack; 3, lower connecting rod; 31, second rack; 32, support foot; 4, sleeve rod; 41, first circular groove; 42, mounting block; 43, limiting groove; 45, second circular groove; 5, movable shaft; 51, mounting rod; 52, gear; 53, pull plate; 54, spring; 55, telescopic rod; 56, limiting rod. Detailed implementation manner

[0018] In the embodiment of the present application, by providing an assistive carbon fiber hydraulic knee joint prosthesis, it effectively solves the technical problem that when the height of the existing prosthesis needs to be adjusted during use, tools such as wrenches and screwdrivers are usually used to loosen the screws at the fixing points, and after adjustment, it is fixed again, making the adjustment steps of the prosthesis height complicated and time-consuming, and not facilitating quick adjustment and use. In this device, by setting the gear 52, the first rack 21 and the second rack 31 to cooperate, when the length of the device needs to be adjusted, only need to pull and rotate the pull plate 53, without using tools such as wrenches and screwdrivers to loosen, adjust and fasten the adjustment point. The adjustment method of this device is convenient and the reset is fast.

[0019] Embodiment: The technical solution in the embodiment of the present application is to effectively solve the technical problem that when the height of an existing prosthetic limb needs to be adjusted during use, tools such as wrenches and screwdrivers are usually required to loosen the screws at the fixing points, and then fix them after adjustment, making the adjustment steps of the height of the prosthetic limb complicated and time-consuming, and not facilitating quick adjustment and use. The general idea is as follows: A power-assisted carbon fiber hydraulic knee joint prosthetic limb, including a wearing cavity 1 and a support foot 32. An adjustment mechanism for facilitating height adjustment is provided on the wearing cavity 1 and the support foot 32, and a locking mechanism for facilitating positioning is provided on the adjustment mechanism. The adjustment mechanism includes an upper connecting rod 2, a lower connecting rod 3, and a sleeve rod 4. The locking mechanism includes a mounting block 42 and a movable shaft 5. A hydraulic mechanism 11 is fixedly installed at the lower end of the wearing cavity 1, and the upper connecting rod 2 is fixedly installed at the lower end of the hydraulic mechanism 11. Both the upper connecting rod 2 and the lower connecting rod 3 are slidably installed on the inner side wall of the sleeve rod 4. The mounting block 42 is fixedly installed at the circumferential end of the sleeve rod 4. A first rack 21 is fixedly installed at the lower end of the upper connecting rod 2, and a second rack 31 is fixedly installed at the upper end of the lower connecting rod 3. The orientations of the first rack 21 and the second rack 31 are opposite. A support foot 32 is fixedly installed at the lower end of the lower connecting rod 3. A first circular groove 41 is penetrated and opened at the side end of the sleeve rod 4, and a plurality of limiting grooves 43 are penetrated and opened at the side end of the mounting block 42. A second circular groove 45 is also penetrated and opened at the side end of the mounting block 42;

[0020] The movable shaft 5 is rotatably installed on the inner side wall of the second circular groove 45. A mounting rod 51 is fixedly installed at the side end of the movable shaft 5, and a gear 52 is fixedly installed at the circumferential end of the mounting rod 51. The gear 52 is located on the inner side wall of the sleeve rod 4. Both the first rack 21 and the second rack 31 are engaged with the gear 52. The forward or reverse rotation of the gear 52 will drive the first rack 21 and the second rack 31 to slide in the sleeve rod 4. The sliding of the first rack 21 and the second rack 31 will drive the upper connecting rod 2 and the lower connecting rod 3 to move closer to or away from each other. At this time, the height of the device will become shorter or longer. After completing the adjustment of the device, the user can release the pull plate 53, and the spring 54 will rebound and pull the pull plate 53 to move back to its original position. At this time, the limiting rod 56 will be inserted into the inner side wall of the limiting groove 43 again to lock and limit the device;

[0021] A pull plate 53 is provided on one side of the movable shaft 5. A spring 54 is fixedly installed between the pull plate 53 and the movable shaft 5, and a telescopic rod 55 is also fixedly installed between the pull plate 53 and the movable shaft 5. The user can rotate the pull plate 53 forward or backward according to the usage situation. The rotation of the pull plate 53 drives the movable shaft 5 to rotate through the spring 54 and the telescopic rod 55, and the rotation of the movable shaft 5 drives the gear 52 on the mounting rod 51 to rotate;

[0022] The telescopic rod 55 is located inside the inner wall of the spring 54. Two limiting rods 56 are fixedly installed at the side end of the pulling plate 53. The pulling plate 53 can be pulled. When the pulling plate 53 moves, the spring 54 and the telescopic rod 55 are stretched. When the pulling plate 53 moves, it will drive the limiting rod 56 to move, and the limiting rod 56 moves away from the inner wall of the limiting groove 43.

[0023] Aiming at the problems existing in the prior art, the utility model provides an assisting carbon fiber hydraulic knee joint prosthesis. By arranging the gear 52, the first rack 21 and the second rack 31 to cooperate, when the length of the device needs to be adjusted, only the pulling plate 53 needs to be pulled and rotated, without using tools such as wrenches and screwdrivers to loosen, adjust and then fasten the adjustment part. The adjustment method of the device is convenient and the reset is fast.

[0024] Working principle:

[0025] The user wears the device through the wearing cavity 1. In actual use, according to the usage situation and the user's height and other situations, the height of the device needs to be adjusted. When the user adjusts the height, the pulling plate 53 can be pulled. When the pulling plate 53 moves, the spring 54 and the telescopic rod 55 are stretched. When the pulling plate 53 moves, it will drive the limiting rod 56 to move. After the limiting rod 56 moves away from the inner wall of the limiting groove 43, the user can rotate the pulling plate 53 forward or backward according to the usage situation. The rotation of the pulling plate 53 drives the movable shaft 5 to rotate through the spring 54 and the telescopic rod 55. The rotation of the movable shaft 5 drives the gear 52 on the mounting rod 51 to rotate. The forward or backward rotation of the gear 52 will drive the first rack 21 and the second rack 31 to slide in the sleeve rod 4. The sliding of the first rack 21 and the second rack 31 will drive the upper connecting rod 2 and the lower connecting rod 3 to move closer to or away from each other. At this time, the height of the device will become shorter or longer. After the adjustment of the device is completed, the user can release the pulling plate 53, and the spring 54 will rebound and pull the pulling plate 53 to move back to its original position. At this time, the limiting rod 56 will be inserted into the inner wall of the limiting groove 43 again to limit and lock the device. When the existing prosthetic limb is in use and its height needs to be adjusted, usually tools such as wrenches and screwdrivers are needed to loosen the screws at the fixed part, and then fix it after adjustment, which makes the adjustment steps of the prosthetic limb height complicated and time-consuming, and is not convenient for quick adjustment and use. By arranging the gear 52, the first rack 21 and the second rack 31 to cooperate, when the length of the device needs to be adjusted, only the pulling plate 53 needs to be pulled and rotated, without using tools such as wrenches and screwdrivers to loosen, adjust and then fasten the adjustment part. The adjustment method of the device is convenient and the reset is fast; and by arranging the pulling plate 53, the limiting rod 56 and the mounting block 42 to cooperate, after the adjustment is completed, the limiting rod 56 on the pulling plate 53 can be clamped in the limiting groove 43 to lock the device, ensuring its safety and stability during wearing and ensuring the wearing comfort.

[0026] Finally, it should be noted that: Obviously, the above embodiments are only examples given to clearly illustrate the present utility model, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. A power-assisted carbon fiber hydraulic knee joint prosthesis, comprising a wearing cavity (1) and a supporting foot (32), characterized in that, The wearing cavity (1) and the supporting feet (32) are provided with an adjusting mechanism for facilitating height adjustment, and the adjusting mechanism is provided with a locking mechanism for facilitating positioning; Among them, the adjusting mechanism includes an upper connecting rod (2), a lower connecting rod (3) and a sleeve rod (4), the locking mechanism includes a mounting block (42) and a movable shaft (5), a hydraulic mechanism (11) is fixedly installed at the lower end of the wearing cavity (1), the upper connecting rod (2) is fixedly installed at the lower end of the hydraulic mechanism (11), the upper connecting rod (2) and the lower connecting rod (3) are both slidably installed on the inner side wall of the sleeve rod (4), and the mounting block (42) is fixedly installed at the circumferential end of the sleeve rod (4).

2. The assistive carbon fiber hydraulic knee joint prosthesis according to claim 1, wherein: A first rack (21) is fixedly installed at the lower end of the upper connecting rod (2); Among them, a second rack (31) is fixedly installed at the upper end of the lower connecting rod (3).

3. The assisted carbon fiber hydraulic knee joint prosthesis according to claim 2, characterized in that: The first rack (21) and the second rack (31) face in opposite directions, and a supporting foot (32) is fixedly installed at the lower end of the lower connecting rod (3).

4. The assistive carbon fiber hydraulic knee joint prosthesis according to claim 3, wherein: A first circular groove (41) is formed through the side end of the sleeve rod (4), and a plurality of limiting grooves (43) are formed through the side end of the mounting block (42); Among them, a second circular groove (45) is also formed through the side end of the mounting block (42).

5. The assistive carbon fiber hydraulic knee joint prosthesis according to claim 4, characterized in that: The movable shaft (5) is rotatably installed on the inner side wall of the second circular groove (45), a mounting rod (51) is fixedly installed at the side end of the movable shaft (5), and a gear (52) is fixedly installed at the circumferential end of the mounting rod (51); Among them, the gear (52) is located on the inner side wall of the sleeve rod (4), and both the first rack (21) and the second rack (31) are engaged with the gear (52).

6. The assistive carbon fiber hydraulic knee joint prosthesis according to claim 5, characterized in that: A pull plate (53) is arranged on one side of the movable shaft (5), a spring (54) is fixedly installed between the pull plate (53) and the movable shaft (5), and a telescopic rod (55) is also fixedly installed between the pull plate (53) and the movable shaft (5), and the telescopic rod (55) is located on the inner side wall of the spring (54); Among them, two limiting rods (56) are fixedly installed at the side end of the pull plate (53).

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