Artificial limb joint

Abstract

The utility model provides an artificial limb joint. The artificial limb joint comprises a first joint connecting base, a hinge base, a second joint connecting base, an assembling base, an H-shaped connecting frame and a hydraulic damper. Two symmetrically-arranged extension arms are integrally arranged on the two sides of the outer side of the rear portion of the first joint connecting base. Wherein the hinge seat is integrally formed at one end, close to the inner side, of the first joint connecting seat; one end of the second joint connecting base is hinged to the hinge base. Wherein the assembling base is hinged to the inner side of the end, away from the hinge base, of the second joint connecting base, and a fixing base is integrally arranged on the rear portion of the assembling base; one end of the H-shaped connecting frame is hinged to the end, away from the first joint connecting base, of the extending arm. According to the artificial limb joint provided by the utility model, the arranged H-shaped connecting frame and the two extension arms form a four-connecting-rod geometric lock structure, so that the sprain probability of the artificial limb joint after accidental falling can be greatly reduced under the action of the four-connecting-rod geometric lock structure, and the safety is better.

Description

Technical Field

[0001] The utility model relates to the technical field of prosthetics, and specifically relates to a prosthetic joint. Background Art

[0002] A prosthetic limb is an artificial prosthesis specially designed and fabricated by engineering means and methods to compensate for the amputated limb or the incompletely defective limb of a person, also known as a "prosthesis". Its main function is to replace some of the functions of the lost limb, enabling the amputee to regain a certain degree of self-care and working ability. Its applicable objects are amputees due to diseases, traffic accidents, industrial accidents, sports injuries, etc.

[0003] Chinese Patent with Publication (Announcement) No. CN218220401U discloses a prosthetic knee joint, which includes a lower leg connecting frame, a thigh connecting frame, a rod group, and an elastic unit. The lower leg connecting frame has a first front pivot part and a first rear pivot part, and the first rear pivot part has a pivot sliding shaft extending horizontally left and right. The thigh connecting frame is located above the lower leg connecting frame and has a second front pivot part and a second rear pivot part. The rod group is arranged between the lower leg connecting frame and the thigh connecting frame. The rod group includes a front pivot rod pivotally connected between the first front pivot part and the second front pivot part, and a rear pivot rod pivotally connected between the first rear pivot part and the second rear pivot part. The rear pivot rod has a pivot sliding groove pivotally connected to the pivot sliding shaft of the first rear pivot part. The pivot sliding groove has a top groove part at the top end and a bottom groove part at the bottom end. The pivot sliding groove can slidably and rotatably accommodate the pivot sliding shaft. The elastic unit is used to make the pivot sliding groove tend to accommodate the pivot sliding shaft with the bottom groove part.

[0004] Although the above prosthetic knee joint can solve the corresponding technical problems. However, the above prosthetic knee joint still has the following defects in actual use:

[0005] The probability of spraining after an accidental fall is relatively high, and the safety is not good. Therefore, a prosthetic joint is proposed. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the problems raised in the background art, and provides a prosthetic joint.

[0007] The specific technical solution is as follows:

[0008] A prosthetic joint, comprising:

[0009] A first joint connecting seat, on both sides of the outer side of the rear part of which, two symmetrically arranged extension arms are integrally provided;

[0010] A hinge seat, which is integrally formed near the inner side of one end of the first joint connecting seat;

[0011] A second joint connecting seat, one end of which is hinged to the hinge seat;

[0012] The fitting seat is hinged to the inner side of the end of the second joint connecting seat away from the hinge seat, and a fixed seat is integrally provided at the rear of the fitting seat;

[0013] The H-shaped connecting frame has one end hinged to the end of the extension arm away from the first joint connecting seat and the other end hinged to the outside of the fixed seat;

[0014] The hydraulic damper has its cylinder body hinged to the hinge seat and its piston rod hinged to the inner side of the fixed seat;

[0015] Wherein, the H-shaped connecting frame and the two extension arms form a four-bar geometric locking structure.

[0016] For the above-mentioned prosthetic joint, wherein: a first mounting seat is threadedly installed at the end of the first joint connecting seat away from the hinge seat.

[0017] For the above-mentioned prosthetic joint, wherein: a second mounting seat is integrally formed at the end of the fitting seat facing away from the first mounting seat.

[0018] For the above-mentioned prosthetic joint, wherein: the front parts of both the first joint connecting seat and the second joint connecting seat are of arc-shaped structures.

[0019] For the above-mentioned prosthetic joint, wherein: an avoidance notch for avoiding the hinge seat is provided at the end of the second joint connecting seat close to the first joint connecting seat.

[0020] For the above-mentioned prosthetic joint, wherein: both the first joint connecting seat and the second joint connecting seat are made of stainless steel.

[0021] For the above-mentioned prosthetic joint, wherein: an arc-shaped guiding groove is provided on the fitting seat, and a guiding block is integrally provided on the inner side surface of the second joint connecting seat, and the guiding block slides into the inside of the arc-shaped guiding groove.

[0022] The utility model has the following beneficial effects:

[0023] The prosthetic joint provided by the utility model mainly consists of a first joint connecting seat, a hinge seat, a second joint connecting seat, a fitting seat, an H-shaped connecting frame and a hydraulic damper. Wherein, two symmetrically arranged extension arms are integrally provided on both sides of the outer side of the rear part of the first joint connecting seat, and a fixed seat is integrally provided at the rear of the fitting seat. One end of the H-shaped connecting frame is hinged to the end of the extension arm away from the first joint connecting seat, and the other end of the H-shaped connecting frame is hinged to the outside of the fixed seat, so that the H-shaped connecting frame and the two extension arms form a four-bar geometric locking structure. Under the action of the four-bar geometric locking structure, the sprain probability of the prosthetic joint after accidental falling can be greatly reduced, and the safety is better. Description of the Drawings

[0024] Figure 1 Structural schematic diagram of the prosthetic joint provided by an embodiment of the present utility model;

[0025] Figure 2 Structural schematic of another perspective of the prosthetic joint provided by an embodiment of the present utility model Figure 1 ;

[0026] Figure 3 Structural schematic of another perspective of the prosthetic joint provided by an embodiment of the present utility model Figure 2 ;

[0027] Figure 4 Cross-sectional structural schematic diagram of the prosthetic joint provided by an embodiment of the present utility model;

[0028] Figure 5 Cross-sectional structural schematic of another perspective of the prosthetic joint provided by an embodiment of the present utility model;

[0029] Figure 6 Partial exploded structural schematic diagram of the prosthetic joint provided by an embodiment of the present utility model.

[0030] In the drawings:

[0031] 1. First joint connecting seat; 101. First mounting seat; 102. Extension arm;

[0032] 2. Second joint connecting seat; 201. Guide block; 202. Avoidance notch;

[0033] 3. Hydraulic damper;

[0034] 4. H-shaped connecting frame;

[0035] 5. Fitting seat; 501. Second mounting seat; 502. Fixed seat; 503. Arc-shaped guide groove;

[0036] 6. Hinge seat. Detailed implementation manners

[0037] The technical solution of the present utility model will be further described below in conjunction with the drawings and through specific implementation manners.

[0038] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0039] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] In the description of the present utility model, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] Embodiment

[0042] The prosthetic joint provided in this embodiment, as Figures 1 - 6 shown, includes: a first joint connecting seat 1, a hinge seat 6, a second joint connecting seat 2, a fitting seat 5, an H-shaped connecting frame 4, and a hydraulic damper 3.

[0043] Wherein, on both sides of the outer side of the rear part of the first joint connecting seat 1, two symmetrically arranged extension arms 102 are integrally provided;

[0044] Wherein, the hinge seat 6 is integrally formed near the inner side of one end of the first joint connecting seat 1;

[0045] Wherein, one end of the second joint connecting seat 2 is hinged to the hinge seat 6;

[0046] Wherein, the fitting seat 5 is hinged to the inner side of the end of the second joint connecting seat 2 away from the hinge seat 6, and a fixing seat 502 is integrally provided at the rear part of the fitting seat 5;

[0047] Wherein, one end of the H-shaped connecting frame 4 is hinged to the end of the extension arm 102 away from the first joint connecting seat 1, and the other end of the H-shaped connecting frame 4 is hinged to the outer side of the fixing seat 502;

[0048] Wherein, the cylinder body of the hydraulic damper 3 is hinged to the hinge seat 6, and the piston rod of the hydraulic damper 3 is hinged to the inner side of the fixing seat 502;

[0049] Among them, the H-shaped connecting frame 4 and the two extension arms 102 form a four-bar geometric locking structure.

[0050] The prosthetic joint adopting the above technical solution mainly consists of a first joint connecting seat 1, a hinge seat 6, a second joint connecting seat 2, a fitting seat 5, an H-shaped connecting frame 4, and a hydraulic damper 3. On both sides of the outer side of the rear part of the first joint connecting seat 1, two symmetrically arranged extension arms 102 are integrally provided. On the rear part of the fitting seat 5, a fixed seat 502 is integrally provided. One end of the H-shaped connecting frame 4 is hinged to the end of the extension arm 102 far from the first joint connecting seat 1, and the other end of the H-shaped connecting frame 4 is hinged to the outer side of the fixed seat 502, so that the H-shaped connecting frame 4 and the two extension arms 102 form a four-bar geometric locking structure. Under the action of the four-bar geometric locking structure, the sprain probability of the prosthetic joint after an accidental fall can be greatly reduced, and the safety is better.

[0051] Among them, the hydraulic damper 3 is used to damp and adjust the extension and knee flexion of the first joint connecting seat 1 and the second joint connecting seat 2, which can effectively buffer the acting force generated during the knee flexion rebound, thereby avoiding a large acting force on the residual limb and further improving the comfort.

[0052] In order to facilitate the installation of the prosthetic joint on the residual limb for use, a first mounting seat 101 is threadedly installed at the end of the first joint connecting seat 1 far from the hinge seat 6. At the same time, a second mounting seat 501 is integrally formed at the end of the fitting seat 5 facing away from the first mounting seat 101.

[0053] In order to further reduce the damage probability of the front parts of the first joint connecting seat 1 and the second joint connecting seat 2 after an accidental fall, the front parts of the first joint connecting seat 1 and the second joint connecting seat 2 are both arc-shaped structures, and the arc-shaped structures can reduce the contact risk between the front parts of the first joint connecting seat 1 and the second joint connecting seat 2 and the ground.

[0054] In order to ensure the relatively smooth rotation of the first joint connecting seat 1 and the second joint connecting seat 2, an avoidance notch 202 for avoiding the hinge seat 6 is opened at the end of the second joint connecting seat 2 close to the first joint connecting seat 1.

[0055] In order to ensure the service life of the prosthetic joint, the first joint connecting seat 1 and the second joint connecting seat 2 are both made of stainless steel.

[0056] In order to further improve the stability of the prosthetic joint, an arc-shaped guiding groove 503 is opened on the fitting seat 5. At the same time, a guiding block 201 is integrally provided on the inner side surface of the second joint connecting seat 2, and the guiding block 201 is slidably inserted into the inside of the arc-shaped guiding groove 503.

[0057] During use, the first mounting seat 101 and the second mounting seat 501 are used to connect the residual limb and the prosthetic foot respectively for use.

[0058] It should be noted that: This prosthetic joint can be made to have a relatively small volume, especially suitable for use by people with a relatively young age and small body size, such as people with special needs like dwarfism. While reducing the volume, a four-bar geometric lock structure is designed. At the same time, the fronts of the joint connecting seat 1 and the joint connecting seat 2 are both arc-shaped structures, greatly reducing the probability of sprains caused by accidental falls. The hydraulic damper 3 is restricted according to the weight borne during activities, and the restricted range is between 35 kg and 60 kg, and the upper limit of standing load-bearing is 80 kg.

[0059] The above is only a preferred embodiment of the present utility model, and thus does not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustration content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prosthetic joint, characterized in that: include: A joint connection seat (1) having two symmetrically arranged extension arms (102) integrally formed on both sides of the outer rear portion; An articulated seat (6) integrally formed at one end of the articulated seat (1) near the inner side; A second articulated seat (2), one end of which is hinged on the articulated seat (6); A fitting seat (5) is hinged to the inner side of one end of the joint connection seat 2 (2) away from the hinge seat (6), and a fixing seat (502) is integrally provided at the rear of the fitting seat (5); An H-shaped connecting frame (4), one end of which is hinged to an end of the extension arm (102) away from the joint connecting seat (1), and the other end of which is hinged to the outside of the fixing seat (502); A hydraulic damper (3), the cylinder body of which is hinged on the hinge seat (6), and the piston rod of which is hinged on the inner side of the fixed seat (502); The H-shaped connecting frame (4) and the two extension arms (102) form a four-link geometric lock structure.

2. The prosthetic joint according to claim 1, characterized in that: A mounting seat 1 (101) is threadedly mounted on one end of the joint connection seat 1 (1) away from the hinge seat (6).

3. The prosthetic joint according to claim 2, characterized in that: The end of the fitting seat (5) facing away from the mounting seat (101) is integrally formed with a mounting seat (501).

4. The prosthetic joint according to claim 2, characterized in that: The front parts of the joint connection seat 1 (1) and the joint connection seat 2 (2) are both arc surface structures.

5. The prosthetic joint according to claim 4, characterized in that: An escape notch (202) for evading the hinge seat (6) is provided at one end of the joint connection seat 2 (2) close to the joint connection seat 1 (1).

6. The prosthetic joint according to any one of claims 1 to 5, characterized in that: The joint connection seat 1 (1) and the joint connection seat 2 (2) are both made of stainless steel.

7. The prosthetic joint according to claim 6, characterized in that: The fitting seat (5) is provided with an arc-shaped guide groove (503), and the inner side surface of the joint connection seat (2) is integrally provided with a guide block (201), and the guide block (201) slides into the interior of the arc-shaped guide groove (503).

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