Hydraulic ankle and prosthesis

Abstract

The application provides a hydraulic ankle joint and artificial limb, and belongs to the technical field of bionic machines, and comprises a foot assembly, a transmission assembly and a connecting head, the transmission assembly is connected with the foot assembly; the connecting head is arranged on the transmission assembly; the connecting head is used for being connected and fixed with an external artificial limb; when the foot assembly is subjected to an oblique force and the oblique force is directed to the left or the right, the transmission assembly generates a buffering effect to offset the oblique force directed to the left or the right. The hydraulic ankle joint and artificial limb provided by the application can transmit the oblique force to the transmission assembly when the hydraulic ankle joint is subjected to an oblique force in the left-right direction, the transmission assembly generates a buffering effect and offsets the oblique force, the naturalness of gait in the use process of the hydraulic ankle joint is ensured, and the adaptability to different environmental road surfaces is improved.

Description

Technical Field

[0001] This invention belongs to the field of bionic mechanical technology, specifically, it relates to a hydraulic ankle joint and prosthesis. Background Technology

[0002] The ankle joint is an important functional component in prosthetic products, and wearing an ankle prosthesis can help patients who have undergone below-knee amputation regain the ability to walk freely.

[0003] Currently, ankle prostheses on the market are mainly divided into two types: active prostheses and passive prostheses. Passive ankle prostheses are primarily designed with a single axis that considers forces acting along the anterior-posterior direction. However, their biomechanical characteristics differ significantly from those of healthy limbs. When the road surface is uneven, such as with pebbles, the wearer experiences forces not only along the anterior-posterior direction but also along the lateral direction, leading to an unnatural gait, discomfort, and low adaptability to different road surfaces. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic ankle joint and prosthesis, which aims to solve the technical problem of low adaptability of wearers to different environmental and road conditions during use in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a hydraulic ankle joint is provided, comprising: a foot assembly, a transmission assembly, and a connector; the transmission assembly is connected to the foot assembly, and the connector is disposed on the transmission assembly and used for connection and fixation with an external prosthesis; The foot assembly includes a foot body and a connecting body. The connecting body includes a connecting plate connected to the foot body, a first fixing plate disposed on the connecting plate, and a second fixing plate spaced apart from the first fixing plate in the front-back direction. The first fixing plate and the second fixing plate are respectively connected to both ends of the transmission assembly. The transmission assembly includes a hydraulic body, a first washer, and a second washer. The lower end face of the hydraulic body is an arc-shaped surface arranged in the left-right direction. The connector is located on the upper end face of the hydraulic body. The hydraulic body is provided with a shaft that runs through the front-back direction. The first washer and the second washer are respectively connected to the two ends of the shaft. When the foot assembly is subjected to a leftward or rightward oblique force, the hydraulic fluid of the transmission assembly adaptively adjusts according to the force-bearing posture, generating a buffering effect to counteract the leftward or rightward oblique force.

[0006] Preferably, the foot body includes: a main foot plate, the upper end of which is connected and fixed to the connecting body; and a bottom plate, which is connected and fixed to the main foot plate.

[0007] Preferably, the main footplate is an arc-shaped plate; the connecting plate is an arc-shaped plate adapted to the upper surface of the main footplate; and the first fixing plate and the second fixing plate are respectively vertically arranged.

[0008] Preferably, the connector is detachably connected to the main plate.

[0009] Preferably, the base plate is connected and fixed to the foot plate main board by a fastening connector.

[0010] A prosthesis comprising a hydraulic ankle joint as described in any of the preceding descriptions.

[0011] The beneficial effects of the hydraulic ankle joint and prosthesis provided by the present invention are as follows: Compared with the prior art, the hydraulic ankle joint and prosthesis of the present invention, when subjected to tilting force in the left and right directions, transmits the oblique force to the hydraulic body. The adaptive posture adjustment of the arc-shaped end face of the hydraulic body generates a buffering effect, accurately offsetting the left and right oblique forces, ensuring the naturalness of the gait during use, thereby improving the adaptability to different environmental road surfaces and enhancing the walking comfort of the wearer. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of a hydraulic ankle joint provided in an embodiment of the present invention. Figure 1 ; Figure 2 A schematic diagram of a hydraulic ankle joint provided in an embodiment of the present invention. Figure 2 ; Figure 3 A schematic diagram of a hydraulic ankle joint provided in an embodiment of the present invention. Figure 3 ; Figure 4 A schematic diagram of a hydraulic ankle joint provided in an embodiment of the present invention. Figure 4 ; Figure 5 A schematic diagram of the transmission component used in a hydraulic ankle joint, provided as an embodiment of the present invention. Figure 1 ; Figure 6 A schematic diagram of the transmission component used in a hydraulic ankle joint, provided as an embodiment of the present invention. Figure 2 ; Figure 7This is a schematic diagram of the transmission component used in a hydraulic ankle joint according to an embodiment of the present invention. Figure 3 .

[0014] In the diagram: 1. Foot body; 11. Foot plate main board; 12. Base plate; 2. Connector; 3. Hydraulic body; 4. Connector head; 5. First gasket; 6. Second gasket. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] The following description, in conjunction with the accompanying drawings, details a hydraulic ankle joint and prosthesis provided in this application through specific embodiments and application scenarios.

[0018] Please refer to the following: Figures 1 to 7 The present invention will now describe a hydraulic ankle joint. The hydraulic ankle joint includes: a foot assembly, a transmission assembly, and a connector 4. The transmission assembly is connected to the foot assembly; the connector 4 is disposed on the transmission assembly; the connector 4 is used for connection and fixation to an external prosthesis.

[0019] The foot assembly includes a foot body 1 and a connecting body 2. The connecting body 2 includes a connecting plate connected to the foot body 1, a first fixing plate disposed on the connecting plate, and a second fixing plate disposed at a certain distance from the first fixing plate in the front-back direction. One end of the first fixing plate is connected to one end of the transmission assembly, and one end of the second fixing plate is connected to the other end of the transmission assembly. The stable hinge between the foot assembly and the transmission assembly is achieved through the double fixing plate spaced cooperation structure, ensuring flexible adjustment when subjected to left and right tilting forces.

[0020] The transmission assembly includes a hydraulic body 3, a first gasket 5, and a second gasket 6. The lower end face of the hydraulic body 3 is an arc-shaped surface arranged in the left-right direction, and the upper end face of the hydraulic body 3 is provided with the connector 4. The hydraulic body 3 is provided with a shaft that runs through the hydraulic body 3 in the front-back direction, and a rotor located inside the hydraulic body 3 is provided on the shaft. The first gasket 5 is connected to one end of the shaft, and the second gasket 6 is connected to the other end of the shaft. The gaskets can effectively reduce the wear of the shaft rotation and improve the structural stability.

[0021] The foot body 1 includes a foot plate main board 11 and a base plate 12. The upper end face of the foot plate main board 11 is connected and fixed to the connector 2; the base plate 12 is connected and fixed to the foot plate main board 11. The base plate 12 is connected and fixed to the foot plate main board 11 by a fastening connector 13. In this embodiment, the fastening connector 13 is a screw, which facilitates the inspection and replacement of the components of the foot body 1.

[0022] In this embodiment, the main footplate 11 is an arc-shaped plate, the base plate 12 is an arc-shaped plate, the connecting plate is an arc-shaped plate adapted to the upper surface of the main footplate 11, the first fixing plate and the second fixing plate are respectively vertically arranged, and the arc-shaped structure can better adapt to the inclined stress state of the road surface and improve the buffering adaptation effect.

[0023] The main board 11 of the footplate has a first connection position for connecting and fixing to the connector 2, and a second connection position for fitting with the fastening connector 13, arranged sequentially from one end to the other. Specifically, the first connection position is a mounting hole structure, and the second connection position is a mounting hole structure. The connector 2 is detachably connected to the main board 11, and is fixedly installed on the first connection position by mounting screws, which is convenient for disassembly and assembly and easy for maintenance.

[0024] The working principle of this hydraulic ankle joint is as follows: The hydraulic ankle joint is fixedly connected to the leg prosthesis via a connector. When the foot comes into contact with an uneven surface and is subjected to a leftward or rightward tilting force, the tilting force is transmitted to the hydraulic body through the foot and connector. Relying on the left-right arc-shaped surface structure at the bottom of the hydraulic body and the front-back through-axis structure, the hydraulic body can adaptively and finely adjust its posture according to the tilting force. The internal hydraulic structure simultaneously generates buffer damping to counteract the left-right tilting impact force, preventing the wearer from having a stiff or off-center gait. It effectively adapts to complex surfaces such as uneven and sloping surfaces, ensuring a natural and comfortable walking gait and greatly improving the adaptability and user experience of different road environments.

[0025] A prosthesis comprising a hydraulic ankle joint as described in any of the preceding descriptions.

[0026] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0027] The present invention provides a detailed description of a hydraulic ankle joint and prosthesis. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A hydraulic ankle joint, characterized in that, include: Foot assembly, transmission assembly, and connector (4); the transmission assembly is connected to the foot assembly, and the connector (4) is disposed on the transmission assembly and used to connect and fix with an external prosthesis; The foot assembly includes a foot body (1) and a connecting body (2). The connecting body (2) includes a connecting plate connected to the foot body (1), a first fixing plate disposed on the connecting plate, and a second fixing plate spaced apart from the first fixing plate in the front-back direction. The first fixing plate and the second fixing plate are respectively connected to the two ends of the transmission assembly. The transmission assembly includes a hydraulic body (3), a first gasket (5), and a second gasket (6). The lower end face of the hydraulic body (3) is an arc-shaped surface arranged in the left-right direction. The connector (4) is located on the upper end face of the hydraulic body (3). The hydraulic body (3) is provided with a shaft that runs through the front-back direction. The first gasket (5) and the second gasket (6) are respectively connected to the two ends of the shaft. When the foot assembly is subjected to a leftward or rightward oblique force, the hydraulic body (3) of the transmission assembly adaptively adjusts according to the force-bearing posture, generating a buffering effect to counteract the leftward or rightward oblique force.

2. A hydraulic ankle joint as described in claim 1, characterized in that, The foot (1) includes: The upper end face of the footplate main board (11) is connected and fixed to the connecting body (2); The base plate (12) is connected and fixed to the foot plate main plate (11).

3. A hydraulic ankle joint as described in claim 2, characterized in that, The main footplate (11) is an arc-shaped plate; the connecting plate is an arc-shaped plate adapted to the upper end face of the main footplate (11); the first fixing plate and the second fixing plate are respectively vertically arranged.

4. A hydraulic ankle joint as described in claim 3, characterized in that, The connector (2) is detachably connected to the footplate mainboard (11).

5. A hydraulic ankle joint as described in claim 4, characterized in that, The base plate (12) is connected and fixed to the foot plate main plate (11) by fastening connector (13).

6. A prosthesis, characterized in that, Including a hydraulic ankle joint as described in any one of claims 1 to 5.

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