Double-hydraulic elastic buckling insurance artificial limb knee joint

Abstract

The utility model belongs to the technical field of safety prostheses, and particularly relates to a double-hydraulic elastic buckling safety prosthetic knee joint which comprises a supporting body, a joint connector and a hydraulic sleeve, the joint connector is arranged at the lower end of the supporting body, and the hydraulic sleeve is arranged at the side end of the supporting body. Through the arrangement of the bent connecting frame, the supporting shaft, the pressure stabilizing connecting mechanism, the spring and the displacement telescopic column, the bent connecting frame and the knee joint protection shell at the front end rotate through the supporting of the supporting shaft and move under the driving of the hydraulic sleeve; the bending connecting frame pulls the pressure stabilizing connecting mechanism through the positioning column, the displacement telescopic column is promoted to move in the pressure stabilizing connecting mechanism, meanwhile, the spring connected to the side end of the pressure stabilizing connecting mechanism is stretched, and when the knee joint bends, the pressure stabilizing connecting mechanism connected with the bending connecting frame gets close to the other side, so that the knee joint is bent. And the displacement telescopic column slides in the pressure stabilizing connecting mechanism, and meanwhile, the spring rebounds and resets.

Description

Technical Field

[0001] This utility model relates to the field of safety prosthetics technology, specifically a dual hydraulic elastic flexion safety prosthetic knee joint. Background Technology

[0002] Insured prosthetic knee joints are essential functional components designed specifically for amputees, aiming to mimic the movement characteristics of a natural knee joint and provide stable support and the ability to walk flexibly. These knee joints can be categorized into various types based on their control mechanisms, such as single-axis knee joints, multi-axis knee joints, manually locking knee joints, automatically locking knee joints, hydraulic knee joints, pneumatic knee joints, and intelligent knee joints.

[0003] The prior art has the following shortcomings: In the prior art, the "prosthetic knee joint" disclosed in CN103384506B "has an upper part and a lower part pivotally supported on the upper part, the upper part has an upper connecting device, the lower part has a lower connecting device, wherein the prosthetic knee joint is configured with a vacuum pump driven by the relative movement of the upper part relative to the lower part, the vacuum pump having an inlet and an outlet."

[0004] The above structure drives the prosthesis through a vacuum pump. However, the structure uses a traditional single-axis connection method to establish a connection at the joint. Although this method can ensure the flexibility of the joint, it is prone to lateral displacement and poor stability when the prosthesis moves at the joint due to the lack of lateral fixation and limiting structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a dual hydraulic elastic flexion safety prosthetic knee joint, which solves the problem of poor stability caused by the lack of lateral fixation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual hydraulic elastic flexion safety prosthetic knee joint, comprising a support body, a joint connector, and a hydraulic sleeve, wherein the joint connector is disposed at the lower end of the support body, and the hydraulic sleeve is disposed at the side end of the support body.

[0007] The upper end of the support body is provided with a bending connecting frame, and the side end of the bending connecting frame is provided with a pressure stabilizing connecting mechanism.

[0008] The bending connection frame also includes a support shaft and a knee joint protective shell. The support shaft passes through the interior of the bending connection frame and is movably connected to it. The knee joint protective shell is fixedly installed at the front end of the bending connection frame.

[0009] As a preferred technical solution of this utility model, the upper end of the support body has a forked structure, and both extend vertically upward. The support shaft also passes through both sides of the upper end of the support body, and establishes a movable connection between the curved connecting frame and the support body.

[0010] As a preferred technical solution of this utility model, the pressure stabilizing connection mechanism further includes a displacement telescopic column, a spring, and a positioning column. The pressure stabilizing connection mechanism adopts a split structure at both ends. The displacement telescopic column is inserted into the pressure stabilizing connection mechanism on the side near the bending connection frame, while the other end of the displacement telescopic column is fixedly connected to the pressure stabilizing connection mechanism near the support body.

[0011] As a preferred technical solution of this utility model, the spring is sleeved around the periphery of the displacement telescopic column, and the positioning column is provided with two sets, which respectively pass through the pressure stabilizing connection mechanism on both sides, and are respectively inserted into the side end of the bending connection frame and the support body.

[0012] As a preferred technical solution of this utility model, the pressure stabilizing connection mechanism is provided in two sets, which are symmetrically distributed with the middle of the support body as the axis, and their oblique extension direction is consistent with that of the hydraulic sleeve.

[0013] As a preferred technical solution of this utility model, gear structures are also provided at both ends of the support shaft, and the gear structures cover the outer walls of both sides of the curved connecting frame.

[0014] As a preferred embodiment of this utility model, the hydraulic sleeve is provided in two sets, which are installed side by side between the inclined end of the support body and the bending connecting frame.

[0015] Compared with the prior art, this utility model provides a dual hydraulic elastic flexion safety prosthetic knee joint, which has the following beneficial effects:

[0016] A dual hydraulic elastic flexion safety prosthetic knee joint is provided, comprising a bending connecting frame, a support shaft, a pressure stabilizing connecting mechanism, a spring, and a displacement telescopic column. In use, the operator installs it onto the joint of the leg prosthesis via the joint connector. The bending connecting frame and the knee joint protective shell at the front end rotate under the support of the support shaft and move under the drive of the hydraulic sleeve. When the prosthetic knee joint makes a lifting motion, the bending connecting frame pulls the pressure stabilizing connecting mechanism through the positioning column, causing the displacement telescopic column to move inside the pressure stabilizing connecting mechanism. At the same time, the spring connected to the side end of the pressure stabilizing connecting mechanism is stretched. When the knee joint makes a bending motion, the pressure stabilizing connecting mechanism connected to the bending connecting frame moves to the other side and causes the displacement telescopic column to slide inside the pressure stabilizing connecting mechanism, while the spring returns to its original position.

[0017] Through the above settings and processes, when the structure is used as a prosthetic knee joint, the two sets of hydraulic sleeves are driven simultaneously to ensure the stability of the prosthetic knee joint's movement. Through the cooperation of the pressure stabilizing connection mechanism, spring, and displacement telescopic column, the prosthetic knee joint has lateral support during movement, and the spring's extension and rebound limit the movement. Compared with the existing prosthetic knee joints that only use the shaft as a connection, this further improves the lateral support stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection position structure of the positioning column and the bending connecting frame of this utility model;

[0020] Figure 3 This is a schematic diagram of the top structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the outer spring connection position of the voltage stabilizing connection mechanism of this utility model.

[0022] In the diagram: 1. Support body; 2. Joint connector; 3. Hydraulic sleeve; 4. Bending connector; 401. Support shaft; 402. Knee joint protective shell; 5. Pressure stabilizing connection mechanism; 501. Displacement telescopic column; 502. Spring; 503. Positioning column. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this embodiment: a dual hydraulic elastic flexion safety prosthetic knee joint includes a support body 1, a joint connector 2, and a hydraulic sleeve 3. The joint connector 2 is located at the lower end of the support body 1, and the hydraulic sleeve 3 is located at the side end of the support body 1.

[0025] A bending connecting frame 4 is provided at the upper end of the supporting body 1, and a pressure stabilizing connecting mechanism 5 is provided at the side end of the bending connecting frame 4.

[0026] The bending connection frame 4 also includes a support shaft 401 and a knee joint protective shell 402. The support shaft 401 passes through the interior of the bending connection frame 4 and is movably connected to it. The knee joint protective shell 402 is fixedly installed at the front end of the bending connection frame 4.

[0027] In this embodiment, the upper end of the support body 1 has a forked structure, and both extend vertically upward. The support shaft 401 also passes through both sides of the upper end of the support body 1, and establishes a movable connection between the bending connecting frame 4 and the support body 1. The pressure stabilizing connection mechanism 5 also includes a displacement telescopic column 501, a spring 502 and a positioning column 503. The pressure stabilizing connection mechanism 5 adopts a split structure at both ends. The displacement telescopic column 501 is inserted into the pressure stabilizing connection mechanism 5 on the side close to the bending connecting frame 4, while the other end of the displacement telescopic column 501 is fixedly connected to the pressure stabilizing connection mechanism 5 close to the support body 1.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, the vertical forked structure at the upper end of the support body 1 surrounds both sides of the curved connecting frame 4 from the outside and establishes a connection through the support shaft 401, thereby giving the curved connecting frame 4 room to rotate.

[0029] In this embodiment, the spring 502 is sleeved around the displacement telescopic column 501, and the positioning column 503 is provided in two sets, which respectively pass through the pressure stabilizing connection mechanism 5 on both sides and are respectively inserted into the side end of the bending connection frame 4 and the support body 1; the pressure stabilizing connection mechanism 5 is provided in two sets, which are symmetrically distributed with the middle of the support body 1 as the axis, and its oblique extension direction is consistent with that of the hydraulic sleeve 3.

[0030] Specifically, such as Figure 3 and Figure 4 As shown, depending on the different bending positions of the bending connecting frame 4, the displacement telescopic column 501 can slide inside the pressure stabilizing connecting mechanism 5, and the pressure stabilizing connecting mechanism 5 will squeeze or stretch the spring 502 depending on the direction of movement when it moves.

[0031] In this embodiment, gear structures are also provided at both ends of the support shaft 401, and the gear structures cover the outer walls of both sides of the bending connecting frame 4; two sets of hydraulic sleeves 3 are provided and are installed side by side between the inclined end of the support body 1 and the bending connecting frame 4.

[0032] The working principle and usage process of this utility model are as follows: When using this structure, the operator installs it on the joint of the leg prosthesis through the joint connector 2. The bending connector 4 and the knee joint protective shell 402 at the front end rotate under the support of the support shaft 401 and move under the drive of the hydraulic sleeve 3. When the prosthesis knee joint makes a lifting action, the bending connector 4 pulls the pressure stabilizing connector 5 through the positioning column 503, causing the displacement telescopic column 501 to move inside the pressure stabilizing connector 5. At the same time, the spring 502 connected to the side end of the pressure stabilizing connector 5 is stretched. When the knee joint makes a bending action, the pressure stabilizing connector 5 connected to the bending connector 4 moves to the other side and causes the displacement telescopic column 501 to slide inside the pressure stabilizing connector 5. At the same time, the spring 502 rebounds and resets.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual hydraulic elastic flexion safety prosthetic knee joint, comprising a support body (1), a joint connector (2), and a hydraulic sleeve (3), wherein the joint connector (2) is disposed at the lower end of the support body (1), and the hydraulic sleeve (3) is disposed at the side end of the support body (1), characterized in that: The upper end of the support body (1) is provided with a bending connecting frame (4), and the side end of the bending connecting frame (4) is provided with a pressure stabilizing connecting mechanism (5); The bending connecting frame (4) also includes a support shaft (401) and a knee joint protective shell (402). The support shaft (401) passes through the interior of the bending connecting frame (4) and establishes an active connection with it. The knee joint protective shell (402) is fixedly installed at the front end of the bending connecting frame (4).

2. The dual hydraulic elastic flexion safety prosthetic knee joint according to claim 1, characterized in that: The upper end of the support body (1) has a bifurcated structure and extends vertically upward. The support shaft (401) also passes through both sides of the upper end of the support body (1) and establishes an active connection between the curved connecting frame (4) and the support body (1).

3. The dual hydraulic elastic flexion safety prosthetic knee joint according to claim 1, characterized in that: The pressure stabilizing connection mechanism (5) also includes a displacement telescopic column (501), a spring (502) and a positioning column (503). The pressure stabilizing connection mechanism (5) adopts a split structure at both ends. The displacement telescopic column (501) is inserted into the pressure stabilizing connection mechanism (5) on the side near the bending connection frame (4), while the other end of the displacement telescopic column (501) is fixedly connected to the pressure stabilizing connection mechanism (5) near the support body (1).

4. The dual hydraulic elastic flexion safety prosthetic knee joint according to claim 3, characterized in that: The spring (502) is sleeved around the displacement telescopic column (501). The positioning column (503) is provided in two sets, which pass through the pressure stabilizing connection mechanism (5) on both sides respectively, and are respectively inserted into the side end of the bending connection frame (4) and the support body (1).

5. The dual hydraulic elastic flexion safety prosthetic knee joint according to claim 1, characterized in that: The pressure stabilizing connection mechanism (5) is provided in two sets, and is distributed symmetrically with the middle of the support body (1) as the axis, and its oblique extension direction is consistent with that of the hydraulic sleeve (3).

6. The dual hydraulic elastic flexion safety prosthetic knee joint according to claim 1, characterized in that: The two ends of the support shaft (401) are also provided with gear structures, and the gear structures cover the outer walls of the two sides of the curved connecting frame (4).

7. The dual hydraulic elastic flexion safety prosthetic knee joint according to claim 1, characterized in that: Two sets of hydraulic sleeves (3) are provided and are installed side by side between the inclined end of the support body (1) and the bending connecting frame (4).

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