Anti-collapse device for prosthetic knee joint

Abstract

The present application relates to a kind of prosthetic knee joint anti-collapse device of prosthetic shield, base is respectively arranged in the two sides of prosthetic knee joint, two sliding grooves are set in each base, and the branch of sliding connection is in each sliding groove, and the bottom end of two branches is connected with connecting rod;Folding soft shell's front and rear ends are respectively connected with the top end of four branches;Switching slider is connected with connecting rod, and pushing switching slider can be dragged branch along sliding groove by connecting rod, and the folding soft shell is folded or unfolded;The upper portion of connecting seat is connected with two bases, and its lower portion is connected with prosthetic lower leg.The device is designed folding structure in the recessed position of knee joint between prosthetic shield and receiving cavity, realizes the unfolding and folding of folding soft shell, completes the rapid filling to the recess, avoids the collapse problem at knee joint after lower limb prosthetic wearer sits down, and improves the aesthetic property of lower limb prosthetic wear.

Description

Technical Field

[0001] This invention belongs to the field of prosthetics and orthotics, specifically relating to a prosthetic knee joint anti-collapse device. Background Technology

[0002] With the increasing aging of the population, the incidence of common lifestyle diseases such as cardiovascular disease and diabetes continues to rise, often leading to lower limb amputation. Furthermore, traumatic events such as traffic accidents and various cancers force patients to undergo irreversible surgical treatments to save their lives, all of which can result in lower limb amputation. Lower limb amputation severely impairs patients' motor function and quality of life.

[0003] For this type of disability, prostheses, as core rehabilitation devices for replacing and restoring the function of missing limbs, should be developed to meet the increasingly stringent needs of users. However, during the research and development process, design and production often focus on functional performance while neglecting aesthetic considerations. The aesthetic function of prostheses is equally important to users, as it can enhance psychological comfort and promote social interaction. Therefore, aesthetic defects can trigger strong psychological and cognitive reactions, ultimately affecting the acceptance of prostheses, social adaptability, and even the user's mental health and overall well-being. Therefore, prosthetic panels become an ideal solution, not only because of the protective function of prosthetic components, but also because they can extend the lifespan of the prosthesis, resist various external influences, and achieve aesthetic functionality.

[0004] However, in the existing technology, when the wearer sits down, the gap at the knee joint causes the pants to collapse, which greatly affects the appearance and may trigger psychological reactions in patients, affecting the acceptance of the prosthesis and their mental health. Summary of the Invention

[0005] To address at least one of the problems in the prior art, the present invention aims to provide a knee joint anti-collapse device for prosthetic plates. By designing a folding structure at the recessed part of the knee joint between the prosthetic plate and the socket, the unfolding and folding of the soft shell can be achieved, quickly filling the recess and preventing the knee joint from collapsing when the lower limb prosthesis wearer sits down.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A prosthetic knee joint anti-collapse device includes:

[0008] The base is set on both sides of the prosthetic knee joint. Each base has two sliding grooves, and each sliding groove is slidably connected to a branch. The bottom ends of the two branches are connected to a connecting rod.

[0009] A folding soft shell is disposed in front of the knee joint of the prosthesis, and the front and rear ends of the folding soft shell are respectively connected to the top ends of the four branches;

[0010] A switch slider is connected to the connecting rod. Pushing the switch slider can drag the branch along the slide groove via the connecting rod, folding or unfolding the folded soft shell.

[0011] The connecting seat is connected at the top to the two bases and at the bottom to the prosthetic leg.

[0012] Preferably, each of the two grooves on the base has one groove being a straight groove and the other being a bent groove, wherein the bend of the bent groove is provided with a rounded corner.

[0013] Preferably, the angle between the straight groove and the upper section of the bent groove is A, and the angle A is 85°.

[0014] Preferably, the connecting rod has an elongated hole, through which the connecting rod is movably connected to the two branches respectively.

[0015] Preferably, the branch includes an upper branch and a lower branch, and the total length of the upper branch and the lower branch is set according to the position requirements of the unfolded or folded soft shell.

[0016] Preferably, the connecting seat includes a horizontal arm and a lower leg tube connector that are connected to each other. The horizontal arm is connected between the two bases, and both ends of the horizontal arm are provided with arc-shaped grooves. The horizontal arm is connected to the base through the arc-shaped grooves, which can adjust the position of the base relative to the connecting seat. The lower leg tube connector is connected to the prosthetic lower leg.

[0017] Preferably, the center of the cross arm is provided with a through hole, and the upper part of the lower leg tube connector passes through the through hole and is connected to the cross arm. The through hole is used to adjust the relative position of the cross arm and the lower leg tube connector.

[0018] Preferably, the outer side of the switch slider is provided with multiple anti-slip ridges.

[0019] Preferably, it also includes a top cover, which is fastened to the base.

[0020] Preferably, the upper cover has a switch moving groove, the switch slider extends out of the switch moving groove, and can slide within the switch moving groove.

[0021] The present invention has the following advantages due to the adoption of the above technical solutions:

[0022] 1. The knee joint anti-collapse device for prosthetic plates provided by the present invention has a folding structure designed in the recessed part of the knee joint between the prosthetic plate and the socket, so as to realize the unfolding and folding of the folding soft shell, avoid the problem of knee joint collapse after the lower limb prosthesis wearer sits down, and improve the aesthetics of wearing lower limb prostheses.

[0023] 2. The knee joint anti-collapse device for prosthetic protectors provided by the present invention has straight grooves and bending grooves on the base, which ensure the unfolding angle of the folding soft shell and can cover the gap at the knee joint after the folding soft shell is unfolded; the folded position ensures that the folding soft shell does not affect the use of the prosthesis after folding.

[0024] 3. The knee joint anti-collapse device for prosthetic brace provided by the present invention has an arc-shaped groove on the cross arm of the connecting seat, and the base can rotate freely within the range of the arc-shaped groove, which facilitates the installation and adjustment of the base. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the installed structure of the prosthetic knee joint anti-collapse device provided in an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure of the knee joint anti-collapse device for prosthetic braces provided in this embodiment of the invention after installation.

[0027] Figure 3 This is a schematic diagram of the structure of the knee joint anti-collapse device for prosthetic braces provided in an embodiment of the present invention.

[0028] Figure 4 This is an enlarged schematic diagram of the base area provided in an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the structure of the base provided in an embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram of the installation structure of the connector provided in an embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the unfolded state of the foldable soft shell provided in an embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram of the folded state of the foldable soft shell provided in an embodiment of the present invention.

[0033] Marked in the attached diagram:

[0034] 100 is the prosthetic lower leg, 1 is the base, 101 is the branch, 1011 is the upper branch, 1012 is the lower branch, 102 is the connecting rod, 103 is the straight groove, 104 is the bending groove, 105 is the oblong hole, 2 is the folding soft shell, 3 is the switch slider, 4 is the connecting seat, 401 is the cross arm, 4011 is the arc groove, 402 is the lower leg tube connector, 5 is the top cover, and 501 is the switch moving groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0036] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", 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 invention and simplifying the description, and do not indicate or imply that the system 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 invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "assembly," "setup," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] This invention provides a knee joint anti-collapse device for prosthetic plates. By designing a folding structure in the recessed area of ​​the knee joint between the prosthetic plate and the socket, the folding soft shell can be unfolded and folded to quickly fill the recess and avoid the problem of knee joint collapse when the lower limb prosthesis wearer sits down.

[0039] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0040] Example

[0041] Please refer to the reference. Figures 1 to 4 This embodiment provides a prosthesis brace knee joint anti-collapse device, including a base 1, a folding soft shell 2, a switch slider 3 and a connecting seat 4;

[0042] The base 1 is set on both sides of the prosthetic knee joint. Each base 1 has two sliding grooves, and each sliding groove is slidably connected to a branch 101. The bottom ends of the two branches 101 are connected to a connecting rod 102.

[0043] The folding soft shell 2 is positioned in front of the knee joint of the prosthesis, and the front and rear ends of the folding soft shell 2 are respectively connected to the top ends of the four branches 101.

[0044] The switch slider 3 is connected to the connecting rod 102. Pushing the switch slider 3 can drag the branch 101 along the slide groove through the connecting rod 102, folding or unfolding the folded soft shell 2.

[0045] The upper part of the connecting seat 4 is connected to the two bases 1, and the lower part is connected to the prosthetic lower leg 100.

[0046] In practical applications, the base 1 can be made of lightweight aluminum alloy, which can ensure strength while reducing weight. Each base 1 has two sliding grooves, one of which is a straight groove 103 and the other is a bent groove 104. The bend of the bent groove 104 has a rounded corner, which can ensure that the branch 101 slides smoothly in the two sliding grooves and can cover the gap at the knee joint when the folded soft shell 2 is unfolded; the use of the prosthesis is not affected when folded.

[0047] Specifically, please refer to the following: Figure 5 The angle between the upper section of the straight groove 103 and the bending groove 104 is A, and the angle A is 85°, which can ensure that after the two branches 101 open the folding soft shell 2, the opening range reaches 85°, which can fold the gap at the knee joint; the angle between the lower section of the straight groove and the bending groove can ensure that the folding soft shell 2 can be closed by the two branches 101.

[0048] In this embodiment, the connecting rod 102 has an elongated hole 105, through which the connecting rod 102 is movably connected to two branches 101. That is, the branches 101 can slide along the elongated hole 105 and rotate relative to it. The elongated hole 105 ensures the opening and closing of the two branches 101 in the two sliding grooves. The bottom ends of the two branches 101 are provided with an upper shaft and a lower shaft extending outwards. The upper shaft extends into the elongated hole 105, and the lower shaft extends into the straight groove 103 and the bending groove 104 of the base 1, ensuring that the two branches 101 can slide along the straight groove 103, the bending groove 104 and the elongated hole 105.

[0049] In this embodiment, the branch 101 can be made of aluminum alloy. The branch 101 includes an upper branch 1011 and a lower branch 1012. The total length of the upper branch 1011 and the lower branch 1012 is set according to the position requirements of the unfolded or folded soft shell 2. Specifically, during installation, the upper branch 1011 and the lower branch 1012 can be cut to a set length by the prosthetist according to different knee joints and plates. If necessary, they can also be bent into an arc to adapt to special prosthetic knee joints. After the connection position of the upper branch 1011 and the lower branch 1012 is determined, the two can be connected by bolts to ensure the firmness of the connection.

[0050] In this embodiment, the foldable soft shell 2 is made of a flexible material and has multiple folds. The flexibility of the foldable soft shell 2 can ensure that it can support the pants outside the prosthesis when unfolded.

[0051] In this embodiment, the two bases 1 are connected to the prosthetic lower leg 100 via a connecting seat 4.

[0052] Specifically, please refer to the following: Figure 6 The connecting seat 4 includes a horizontal arm 401 and a lower leg tube connector 402 connected to each other. The horizontal arm 401 is connected between two bases 1. Arc-shaped grooves 4011 are provided on both sides of the horizontal arm 401. Threaded holes are provided on the bases 1. Screws connect the bases 1 and the horizontal arm 401 through the arc-shaped grooves 4011 and the threaded holes. Through the arc-shaped grooves 4011, the bases 1 can freely rotate within the range of the arc-shaped grooves 4011 on the horizontal arm 401, and then be fixed after finding a suitable angle. The position of the bases 1 relative to the connecting seat 4 can be adjusted through the arc-shaped grooves 4011. The lower leg tube connector 402 is connected to the prosthetic lower leg 100 via an air-end clamp.

[0053] In other embodiments, connecting plates are provided at both ends of the cross arm 401, and the arc-shaped groove 4011 is formed on the connecting plates.

[0054] In this embodiment, a through hole is provided at the center of the horizontal arm 401. The upper part of the calf tube connector 402 passes through the through hole and connects to the horizontal arm 401. The through hole is used to adjust the relative position of the horizontal arm 401 and the calf tube connector 402. After the installation requirements are met, the two are fixed with bolts. When installing the connecting seat 4, the calf tube connector 402 is first connected to the prosthetic calf 100. After the horizontal arm 401 is adjusted to the correct height, it is fixed to the calf tube connector 402 with screws. After the positions of the two side bases 1 relative to the connecting seat 4 are adjusted, they are connected with screws.

[0055] In this embodiment, multiple anti-slip ridges are provided on the outer side of the switch slider 3.

[0056] Specifically, the bottom surface of the switch slider 3 is connected to the connecting rod 102, and its top surface is provided with multiple anti-slip ridges that can increase friction.

[0057] In this embodiment, an upper cover 5 is fastened to the outer side of the base 1 and installed on the outer surface of the base 1. The two are connected by flat-head bolts to keep the surface of the upper cover 5 flat, which can play a role in covering and aesthetics, while ensuring the movement of the connecting rod 102 in the base 1 and avoiding external interference.

[0058] In this embodiment, the upper cover 5 is provided with a switch moving groove 501, the switch slider 3 extends out of the switch moving groove 501 and can slide in the switch moving groove 501.

[0059] When the knee joint anti-collapse device of the prosthetic brace in this embodiment is in operation, please refer to the following: Figure 7 and Figure 8After the prosthesis patient sits down, the patient pushes the switch sliders 3 on both sides of the knee joint with both hands at the same time. The switch sliders 3 drive the four branches 101 to open at an 85° angle along the slide groove through the connecting rod 102, thus opening the folded soft shell 2. This can prevent the knee joint from collapsing. Before the patient changes from a sitting position to a standing position, the switch sliders 3 are pulled back on both sides at the same time. The switch sliders 3 drive the four branches 101 to return to their initial state along the slide groove through the connecting rod 102, and the folded soft shell 2 is in a folded state.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A prosthetic knee joint anti-collapse device, characterized in that, include: The base consists of two parts, which are respectively set on both sides of the prosthetic knee joint. Each base has two sliding grooves, and each sliding groove is slidably connected to a branch. The bottom ends of the two branches are connected to a connecting rod. A folding soft shell is disposed in front of the knee joint of the prosthesis, and the front and rear ends of the folding soft shell are respectively connected to the top ends of the four branches; A switch slider is connected to the connecting rod. Pushing the switch slider can drag the branch along the slide groove via the connecting rod, folding or unfolding the folded soft shell. The connecting seat is connected at the top to the two bases and at the bottom to the prosthetic leg.

2. The knee joint anti-collapse device for prosthetic brace according to claim 1, characterized in that, Each of the bases has two sliding grooves, one of which is a straight groove and the other is a bent groove, with a rounded corner at the bend of the bent groove.

3. The knee joint anti-collapse device for prosthetic brace according to claim 2, characterized in that, The angle between the straight groove and the upper section of the bent groove is A, and the angle A is 85°.

4. The knee joint anti-collapse device for prosthetic brace according to claim 1, characterized in that, The connecting rod has an elongated hole, through which it is movably connected to the two branches respectively.

5. The knee joint anti-collapse device for prosthetic brace according to claim 1, characterized in that, The branch includes an upper branch and a lower branch, and the total length of the connection between the upper branch and the lower branch is set according to the position requirements of the unfolded or folded soft shell.

6. The knee joint anti-collapse device for prosthetic brace according to claim 1, characterized in that, The connecting seat includes a horizontal arm and a lower leg tube connector that are connected to each other. The horizontal arm is connected between the two bases, and both ends of the horizontal arm are provided with arc-shaped grooves. The horizontal arm is connected to the base through the arc-shaped grooves, which can adjust the position of the base relative to the connecting seat. The lower leg tube connector is connected to the prosthetic lower leg.

7. The knee joint anti-collapse device for prosthetic braces according to claim 6, characterized in that, The cross arm has a through hole at its center. The upper part of the lower leg tube connector passes through the through hole and connects to the cross arm. The through hole is used to adjust the relative position of the cross arm and the lower leg tube connector.

8. The knee joint anti-collapse device for prosthetic brace according to claim 1, characterized in that, The outer side of the switch slider is provided with multiple anti-slip ridges.

9. The knee joint anti-collapse device for prosthetic limb brace according to claim 1, characterized in that, It also includes a top cover, which is fastened to the base.

10. The knee joint anti-collapse device for prosthetic braces according to claim 9, characterized in that, The upper cover has a switch moving groove, and the switch slider extends out of the switch moving groove and can slide within the switch moving groove.

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