A quick-attachment protective plate for lower limb prostheses

Abstract

This invention relates to a quick-attachment protective plate for a lower limb prosthesis, comprising a front protective plate, a rear protective plate, clamping arms, and locking handles. The front protective plate has a first connecting groove and a second connecting groove on its inner sides; the rear protective plate has a third connecting groove and a fourth connecting groove on its inner sides. The clamping arms are rotatably connected to the first and third connecting grooves. The locking handles are located on opposite sides of the front and rear protective plates, each locking handle being connected to a shaped slider with an opening groove at its front end. Engaging the two locking handles causes the two shaped sliders to slide inwards, connecting the front and rear protective plates. Simultaneously, the two clamping arms rotate to clamp the lower leg tube. Through the linkage of the locking handles, shaped sliders, and clamping arms, the front and rear protective plates and the lower leg tube can be connected simultaneously, resulting in good stability, fast installation and disassembly, minimal risk of damage or loosening after repeated assembly and disassembly, and good aesthetics.

Description

Technical Field

[0001] This invention belongs to the field of prosthetics and orthotics, specifically relating to a quick-attachment guard plate for lower limb prostheses. 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] Lower limb prosthetic plates include front and rear plates. However, in the existing technology, some front or rear plates have a ring-shaped locking structure installed inside, which is connected to the lower leg tube by screws. Then the front and rear plates are connected through cylindrical holes. Installation and disassembly are time-consuming and laborious, and repeated disassembly and assembly can easily damage or loosen the plate. Some front plates are connected to the prosthesis by straps, but this connection is only for the front half, which is aesthetically unappealing and provides poor protection for the internal components. Summary of the Invention

[0005] To address at least one of the problems in the prior art, the present invention aims to provide a quick-attachment protective plate for lower limb prostheses, which can simultaneously connect the front protective plate, the rear protective plate, and the lower leg tube, offering good stability, fast installation and disassembly speeds, resistance to damage or loosening after repeated disassembly and assembly, and aesthetic appeal.

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

[0007] A quick-attachment guard plate for lower limb prostheses, comprising:

[0008] The front guard plate has a first connecting groove and a second connecting groove on its inner two sides, respectively.

[0009] The rear guard plate has a third connecting groove and a fourth connecting groove on its inner two sides respectively;

[0010] The clamping arm is rotatably connected to the first connecting groove and the third connecting groove respectively, and is used to clamp the lower leg tube;

[0011] Locking handles are respectively located on opposite sides of the front and rear guard plates. Each locking handle is connected to a shaped slider, and the front end of the shaped slider is provided with an opening groove. When the two locking handles are engaged, the two shaped sliders can be driven to slide inward and clamp the side walls adjacent to the first and fourth connecting grooves, and the side walls adjacent to the second and third connecting grooves, respectively, connecting the front and rear guard plates. At the same time, the two shaped sliders push the two clamping arms to rotate and clamp the lower leg tube.

[0012] Preferably, the inner side of the clamping end of each clamping arm is configured as an arc shape.

[0013] Preferably, a rubber pad is provided on the inner side of the clamping end.

[0014] Preferably, the end face of each clamping arm that contacts the irregularly shaped slider is arc-shaped.

[0015] Preferably, the side of the irregularly shaped slider that contacts the clamping arm is an inclined surface.

[0016] Preferably, the locking handle includes a handle and a T-shaped connecting rod, the handle being rotatably connected to the T-shaped connecting rod, and the end of the T-shaped connecting rod being connected to the irregularly shaped slider.

[0017] Preferably, both the front guard plate and the rear guard plate have through holes on their sidewalls, and the T-shaped connecting rod passes through the through holes.

[0018] Preferably, the handle has a groove on its inner side, allowing the T-shaped connecting rod to move within it when the handle is turned.

[0019] Preferably, one corner of the handle is set as a rounded corner.

[0020] Preferably, the bottom ends of the front guard plate and the rear guard plate are in contact with the top end of the prosthetic foot.

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

[0022] 1. The quick-release lower limb prosthesis guard plate provided by this invention can simultaneously connect and unlock the front guard plate, the rear guard plate, and the lower leg tube through the linkage of the locking handle, the irregularly shaped slider, and the clamping arm. It allows for quick insertion and removal of the lower leg guard plate. Compared with the existing screw and strap fixing structure, this structure has a fast installation and disassembly speed, good stability, and will not run off. It is not easily damaged or loosened after repeated disassembly and assembly, and it has a good aesthetic appearance.

[0023] 2. The quick-release clamping guard plate for lower limb prostheses provided by the present invention has a rubber pad on the inner side of the clamping arm, which can increase the friction between the clamping arm and the lower leg tube. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the installed structure of a quick-attachment guard plate for a lower limb prosthesis according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the internal structure of the quick-attachment guard plate for lower limb prostheses provided in this embodiment of the invention after installation.

[0026] Figure 3 This is a schematic diagram of the internal structure of the connecting groove provided in this embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the unlocked state of the quick-release guard plate for the lower limb prosthesis provided in this embodiment of the invention.

[0028] Figure 5 This is a schematic diagram of the connection between the protective plate and the prosthetic foot provided in this embodiment of the present invention.

[0029] Marked in the attached diagram:

[0030] 1 is the front guard plate, 101 is the first connecting groove, 102 is the second connecting groove, 2 is the rear guard plate, 201 is the third connecting groove, 202 is the fourth connecting groove, 3 is the clamping arm, 4 is the locking handle, 401 is the handle, 402 is the T-shaped connecting rod, 5 is the lower leg tube, 6 is the irregularly shaped slider, 601 is the opening groove, and 7 is the rubber pad. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] This invention provides a quick-attachment protective plate for lower limb prostheses, which can simultaneously connect the front protective plate, the rear protective plate, and the lower leg tube. It has good stability, fast installation and disassembly speed, is not easily damaged or loosened after repeated disassembly and assembly, and has good aesthetics.

[0035] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] Example

[0037] Please refer to the reference. Figures 1 to 3 This embodiment provides a quick-release guard plate for a lower limb prosthesis, including a front guard plate 1, a rear guard plate 2, a clamping arm 3, and a locking handle 4;

[0038] The front guard plate 1 has a first connecting groove 101 and a second connecting groove 102 respectively on both sides;

[0039] The rear side guard plate 2 has a third connecting groove 201 and a fourth connecting groove 202 respectively on both sides;

[0040] The clamping arm 3 is rotatably connected to the first connecting groove 101 and the third connecting groove 201 respectively, and is used to clamp the lower leg tube 5;

[0041] Locking handles 4 are respectively located on opposite sides of the front guard plate 1 and the rear guard plate 2. Each locking handle 4 is connected to a shaped slider 6. The front end of the shaped slider 6 is provided with an opening groove 601. When the two locking handles 4 are engaged, the two shaped sliders 6 can slide inward and clamp the side walls adjacent to the first connecting groove 101 and the fourth connecting groove 202, and the side walls adjacent to the second connecting groove 102 and the third connecting groove 201, respectively, connecting the front guard plate 1 and the rear guard plate 2. At the same time, the two shaped sliders 6 push the two clamping arms 3 to rotate and clamp the lower leg tube 5.

[0042] Specifically, the front protective plate 1 and the rear protective plate 2 are respectively installed on the front and rear sides of the lower limb prosthesis's calf tube 5, serving to protect the internal components of the prosthesis and enhance its aesthetics.

[0043] In this embodiment, the first connecting groove 101 and the second connecting groove 102 are located on both sides of the front guard plate 1 and are integrally formed with the front guard plate 1; the third connecting groove 201 and the fourth connecting groove 202 are located on both sides of the rear guard plate 2 and are integrally formed with the rear guard plate 2; when the front guard plate 1 and the rear guard plate 2 are connected, the side wall of the first connecting groove 101 is in close contact with the side wall of the fourth connecting groove 202, and both side walls have openings for the sliding of the irregularly shaped slider 6, which is used to lock and unlock the front guard plate 1 and the rear guard plate 2; the side wall of the second connecting groove 102 is in close contact with the side wall of the third connecting groove 201, and the first connecting groove 101 and the third connecting groove 201 have the same structure, and the second connecting groove 102 and the fourth connecting groove 202 have the same structure.

[0044] In this embodiment, the inner side of the clamping end of each clamping arm 3 is set to be arc-shaped.

[0045] Specifically, the two clamping arms 3 are rotatably connected to the first connecting groove 101 and the third connecting groove 201 respectively via rotating shafts. Each of the inner ends of the first connecting groove 101 and the third connecting groove 201 has an opening through which the clamping arms 3 extend, and the size of the opening is sufficient to accommodate the rotation of the clamping arms 3. When clamping the lower leg tube 5, the clamping ends of the two clamping arms 3 are located on opposite sides of the lower leg tube 5, and the arc length of the clamping section is less than that of a semicircle, making it easier to clamp the lower leg tube 5.

[0046] In this embodiment, a rubber pad 7 is provided on the inner side of the clamping end of the clamping arm 3. The rubber pad 7 is elastic and can increase the friction between the clamping arm 3 and the lower leg tube 5. Anti-slip ridges can also be provided on the inner side of the rubber pad 7 to further increase the friction.

[0047] In this embodiment, the end face of the contact end of each clamping arm 3 and the irregular slider 6 is set to be arc-shaped. When the clamping arm 3 needs to lock the calf tube 5, the irregular slider 6 is pushed outward. The end face of the contact end of the irregular slider 6 is arc-shaped, which can ensure the smooth rotation of the clamping arm 3 and the smooth sliding of the irregular slider 6.

[0048] In this embodiment, the side of the irregularly shaped slider 6 that contacts the clamping arm is an inclined surface.

[0049] Specifically, the irregularly shaped slider 6 is U-shaped. When the irregularly shaped slider 6 moves inward, its opening groove 601 can clamp the two side walls of the two adjacent connecting grooves, ensuring the stability of the connection between the front guard plate 1 and the rear guard plate 2. Since the side of the irregularly shaped slider 6 that contacts the clamping arm is inclined, when the irregularly shaped slider 6 moves inward, its inclined surface can push the clamping arm 3 to rotate, so that the two clamping arms 3 clamp the calf tube 5. When unlocking, the locking handle 4 drives the irregularly shaped slider 6 to move outward, and the opening groove 601 of the irregularly shaped slider 6 disengages from the two side walls of the two connecting grooves, unlocking the connection between the front guard plate 1 and the rear guard plate 2. At the same time, the clamping arm 3 is no longer squeezed by the inclined surface of the irregularly shaped slider 6, and the two clamping arms 3 release the clamping on the calf tube 5. Through the linkage of the irregularly shaped slider 6 and the clamping arm 3, the front guard plate 1, the rear guard plate 2, and the calf tube 5 can be locked and unlocked simultaneously.

[0050] In this embodiment, the locking handle 4 includes a handle 401 and a T-shaped connecting rod 402. The handle 401 is rotatably connected to the T-shaped connecting rod 402, and the end of the T-shaped connecting rod 402 is connected to the irregularly shaped slider 6.

[0051] Specifically, both the front guard plate 1 and the rear guard plate 2 have through holes on their side walls. The T-shaped connecting rod 402 passes through the through holes. The inner diameter of the through holes is larger than the outer diameter of the T-shaped connecting rod 402. The inner diameter of the through holes can meet the movement requirements of the T-shaped connecting rod 402 within them.

[0052] The handle 401 has a groove on its inner side, and the T-shaped connecting rod 402 is rotatably connected to the two side walls of the groove on the same axis. When the handle 401 is turned, the T-shaped connecting rod 402 can move inside it.

[0053] One corner of the handle 401 is set as a rounded corner. When unlocking is required, the handle 401 is pulled upwards and can rotate along the rounded corner, ensuring smooth locking and unlocking of the locking handle 4.

[0054] In this embodiment, please refer to the reference. Figure 5 The bottom ends of the front guard plate 1 and the rear guard plate 2 respectively contact the top of the prosthetic foot, which supports the front guard plate 1 and the rear guard plate 2, and further ensures the stability of the connection between the front guard plate 1 and the rear guard plate 2 and the lower leg tube 5.

[0055] When using the quick-attachment brace for the lower limb prosthesis in this embodiment, please refer to the following: Figures 3 to 4When it is necessary to unlock the connection between the front side panel 1, the rear side panel 2, and the lower leg tube 5, the locking handles 4 on both sides of the prosthesis are pulled upwards respectively. The locking handles 4 drive the irregularly shaped slider 6 to move outwards, and the opening groove 601 of the irregularly shaped slider 6 disengages from the two side walls of the two connecting grooves, unlocking the connection between the front side panel 1 and the rear side panel 2. At the same time, the clamping arms 3 are no longer squeezed by the inclined surface of the irregularly shaped slider 6, and the two clamping arms 3 loosen their clamping on the lower leg tube 5. When it is necessary to lock the front side panel 1, the rear side panel 2, and the lower leg tube 5, the locking handles 4 on both sides of the prosthesis are snapped inwards respectively. The locking handles 4 drive the irregularly shaped slider 6 to move inwards, and the opening groove 601 of the irregularly shaped slider 6 engages with the two side walls of the two connecting grooves, connecting the front side panel 1 and the rear side panel 2. At the same time, the clamping arms 3 are squeezed by the inclined surface of the irregularly shaped slider 6, and the two clamping arms 3 rotate inwards to clamp the lower leg tube 5.

[0056] The quick-attachment protective plate for the lower limb prosthesis in this embodiment can simultaneously connect the front protective plate, the rear protective plate, and the lower leg tube. It has good stability, fast installation and disassembly speed, and is not easily damaged or loosened after repeated disassembly and assembly. Since the front protective plate 1 and the rear protective plate 2 have no connecting columns, connecting bolts, or straps, they have good aesthetics.

[0057] 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 quick-attachment protective plate for lower limb prostheses, characterized in that, include: The front guard plate has a first connecting groove and a second connecting groove on its inner two sides, respectively. The rear guard plate has a third connecting groove and a fourth connecting groove on its inner two sides respectively; The clamping arm is rotatably connected to the first connecting groove and the third connecting groove respectively, and is used to clamp the lower leg tube; Locking handles are respectively located on opposite sides of the front and rear guard plates. Each locking handle is connected to a shaped slider, and the front end of the shaped slider is provided with an opening groove. When the two locking handles are engaged, the two shaped sliders can slide inward and clamp the side walls adjacent to the first and fourth connecting grooves, and the side walls adjacent to the second and third connecting grooves, respectively, connecting the front and rear guard plates. At the same time, the two shaped sliders push the two clamping arms to rotate and clamp the lower leg tube.

2. The quick-release protective plate for lower limb prostheses according to claim 1, characterized in that, The inner side of the clamping end of each clamping arm is set to an arc shape.

3. The quick-release protective plate for lower limb prostheses according to claim 2, characterized in that, A rubber pad is provided on the inner side of the clamping end.

4. The quick-release protective plate for lower limb prostheses according to claim 2, characterized in that, The end face of each clamping arm that contacts the irregularly shaped slider is set to be arc-shaped.

5. The quick-release protective plate for lower limb prostheses according to claim 4, characterized in that, The side of the irregularly shaped slider that contacts the clamping arm is an inclined surface.

6. The quick-release protective plate for lower limb prostheses according to claim 1, characterized in that, The locking handle includes a handle and a T-shaped connecting rod. The handle is rotatably connected to the T-shaped connecting rod, and the end of the T-shaped connecting rod is connected to the irregularly shaped slider.

7. The quick-release protective plate for lower limb prostheses according to claim 6, characterized in that, Both the front guard plate and the rear guard plate have through holes on their side walls, and the T-shaped connecting rod passes through the through holes.

8. The quick-release plate for lower limb prostheses according to claim 6, characterized in that, The handle has a groove on its inner side, and the T-shaped connecting rod can move within it when the handle is turned.

9. The quick-release protective plate for lower limb prostheses according to claim 6, characterized in that, One corner of the handle is set as a rounded corner.

10. The quick-attachment protective plate for lower limb prostheses according to claim 1, characterized in that, The bottom ends of the front and rear protective plates respectively contact the top of the prosthetic foot.

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