Artificial limb supporting device used after orthopaedic surgery amputation

Abstract

The invention discloses a postoperative prosthetic supporting device for plastic surgery amputation, which comprises a prosthetic part and a foot part, the foot part comprises a bottom plate and a buffer plate, the bottom plate and the front end part of the buffer plate are integrated, the buffer plate is arranged in an inclined manner, and the bottom plate is connected with the buffer plate. A buffer space is arranged between the buffer plate and the bottom plate tail section, a buffer assembly is arranged on the buffer plate tail section, a connecting frame is arranged on the buffer assembly, a connecting part is fixedly arranged on the connecting frame, and the connecting part is used for movably connecting an artificial limb part. The foot part is provided with the bottom plate and the buffer plate, the buffer plate is obliquely arranged, a buffer space is reserved between the buffer plate and the bottom plate, a first basic buffer effect is formed through the elasticity of a material of the buffer plate, the effect of simulating a real foot heel is also achieved, and the bottom plate and the front section part of the buffer plate are integrally formed, so that the effect of simulating the real foot heel is achieved. The bottom plate simulates the arc design of the foot bottom plate, and buffering is further achieved.

Description

Technical Field

[0001] This invention relates to the field of prosthetic support technology, specifically to a prosthetic support device for use after orthopedic amputation. Background Technology

[0002] Prostheses are important tools for amputees to restore limb function. Traditional prostheses are mostly made of materials such as aluminum plates, wood, and plastics. In recent years, they have gradually developed into titanium alloys and carbon fiber composite materials to improve lightweight and durability. Prostheses usually include a socket, foot, and connecting parts. The socket is the core component that directly contacts the residual limb and transmits force. It is responsible for fixing the prosthesis, distributing pressure, and ensuring wearing comfort. It needs to be customized according to the shape of the patient's residual limb. Materials often selected are silicone, polyurethane, or carbon fiber composite materials. The socket, which is what we commonly call the prosthesis part, is often connected to the foot by a simple metal rod such as titanium alloy.

[0003] However, existing technologies still have significant shortcomings, such as: In existing technologies, the support devices of prostheses often only provide support for the missing limb parts. In other words, the connection between the socket and the foot is often simply made by a connecting rod, lacking the cushioning and ankle joint flexibility that simulates a real foot. Summary of the Invention

[0004] The purpose of this invention is to provide a prosthetic support device for use after orthopedic amputation, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A prosthetic support device for use after orthopedic amputation includes a prosthetic part and a foot. The foot includes a base plate and a buffer plate. The front ends of the base plate and the buffer plate are integral. The buffer plate is inclined. A buffer space is provided between the buffer plate and the tail end of the base plate. A buffer assembly is provided on the tail section of the buffer plate, a connecting frame is provided on the buffer assembly, and a connecting part is fixedly provided on the connecting frame. The connecting part is used to make a movable connection to the prosthesis.

[0006] Preferably, the buffer assembly includes a fixing plate disposed at the tail end of the buffer plate, the fixing plate being fixed to the buffer plate by fixing bolts; A central rotating shaft is rotatably mounted on the fixed plate, and the connecting frame is rotatably mounted on the central rotating shaft. The fixed plate is fixed to the tail section of the buffer plate by a connecting nut. The fixed plate has lower rotating shafts fixedly installed on both sides of the central rotating shaft. The connecting frame has two pairs of track grooves symmetrically opened. Limiting rings are fixedly installed inside the track grooves. Upper rotating shafts are slidably installed inside the two limiting rings. A spring assembly is installed between the upper rotating shafts and the lower rotating shafts.

[0007] Preferably, the spring assembly includes a buffer spring, with an upper connecting block and a lower connecting block fixedly disposed at both ends of the buffer spring, the upper connecting block being rotatably disposed on an upper rotating shaft, and the lower connecting block being rotatably disposed on a lower rotating shaft.

[0008] Preferably, the connecting frame is provided with a mounting groove, the mounting groove is movably sleeved on both ends of the central rotating shaft, and both ends of the central rotating shaft are provided with threads; The two ends of the central rotating shaft are movably fitted with limiting sleeves. When the connecting frame is fitted on the central rotating shaft, it is located inside the limiting sleeves. The two ends of the central rotating shaft are provided with limiting nuts for limiting the limiting sleeves.

[0009] Preferably, the spring constant of the buffer spring closer to the front of the foot is greater than the spring constant of the other buffer spring.

[0010] Preferably, the front section and the bottom plate of the foot are provided with stabilizing grooves to facilitate fixed placement.

[0011] Preferably, the bottom surface of the base plate is arc-shaped.

[0012] Preferably, the prosthetic part and the connecting part are connected by a snap-fit.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The foot is designed as a base plate and a cushioning plate, with the cushioning plate tilted and a cushioning space between it and the base plate. The elasticity of the cushioning plate material itself forms the first basic cushioning effect, which also simulates the effect of the heel of a real foot. The front part of the base plate and the cushioning plate are molded as one piece, and the base plate simulates the arc design of the sole of the foot to further achieve cushioning. 2. By setting up the buffer component, a second buffering effect is achieved. Furthermore, by using the central pivot on the fixed plate and placing the spring component between the upper and lower pivots, the rotation effect at the connecting frame is achieved, allowing the entire buffer component to rotate as a whole. 3. The stabilizing groove allows the entire unit to be fixed when not in use. This fixing is achieved by a locking rod that can enter the stabilizing groove. At the same time, the spring assembly can also be replaced to prevent spring fatigue after long-term use. Attached Figure Description

[0014] Figure 1This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the foot of the present invention; Figure 4 This is a side view of the foot structure of the present invention; Figure 5 This is an exploded view of the foot structure of the present invention; Figure 6 This is a side view of the buffer component of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the buffer component of the present invention.

[0015] In the diagram: 1. Prosthetic limb; 2. Foot; 3. Base plate; 4. Buffer plate; 5. Buffer space; 6. Connecting frame; 7. Connecting part; 8. Fixing plate; 9. Fixing bolt; 10. Central pivot; 11. Lower pivot; 12. Track groove; 13. Limiting ring; 14. Upper pivot; 15. Buffer spring; 16. Upper connecting block; 17. Lower connecting block; 18. Mounting groove; 19. Thread; 20. Limiting sleeve; 21. Limiting nut; 22. Stabilizing groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-7 The present invention provides a technical solution: A prosthetic support device for postoperative amputation in orthopedic surgery includes a prosthetic portion 1 and a foot portion 2. In this embodiment, the prosthetic portion 1 refers to the receiving cavity, used to insert the patient's residual limb. The foot portion 2 includes a base plate 3 and a buffer plate 4. The front ends of the base plate 3 and the buffer plate 4 are integral, and the buffer plate 4 is inclined. A buffer space 5 is provided between the rear ends of the buffer plate 4 and the base plate 3. In this embodiment, the foot portion 2 includes two parts: a buffer plate 4 and a base plate 3. The front ends of the base plate 3 and the buffer plate 4 are integrally formed, and a certain gap is left between the rear ends of the buffer plate 4 and the base plate 3, which is the buffer space 5 in this embodiment. Both 4 and the base plate 3 can be made of titanium alloy or other materials with strong recovery ability and good elasticity. The choice can be made according to the actual use. All of these are materials well known to those skilled in the art, and will not be described in detail here. The foot 2 here achieves the first cushioning effect. The first is to achieve cushioning through the elasticity of the material of the cushioning plate 4 itself. The cushioning space 5 in this embodiment simulates the structure of the heel of the real foot. The cushioning space 5 is set to allow for downward movement of the cushioning plate 4. The bottom surface of the base plate 3 is arc-shaped. The arc-shaped setting of the bottom surface of the base plate 3 also simulates the arc of the sole of the real foot, which can also play a certain cushioning role. A buffer assembly is provided on the tail section of the buffer plate 4, and a connecting frame 6 is provided on the buffer assembly. A connecting part 7 is fixedly provided on the connecting frame 6. The connecting part 7 is used to connect the prosthesis part 1 in an active manner. The prosthesis part 1 and the connecting part 7 are connected by a snap fastener. In this embodiment, the prosthesis part 1 and the connecting part 7 are connected by a snap fastener. The snap fastener is a device well known to those skilled in the art and will not be described in detail here. The snap fastener connection method facilitates the replacement and removal of the prosthesis part 1.

[0018] This section describes one implementable structure of the buffer assembly in this embodiment. The buffer assembly includes a fixing plate 8 disposed at the tail end of the buffer plate 4. The fixing plate 8 is fixed to the buffer plate 4 by fixing bolts 9. The buffer assembly in this embodiment is divided into three parts: a connecting frame 6, a fixing plate 8, and a spring assembly. The spring assembly is disposed between the connecting frame 6 and the fixing plate 8, and two sets are provided. The fixing plate 8 is fixed to the buffer plate 4 by fixing bolts and is located at the tail end of the buffer plate 4. A central rotating shaft 10 is rotatably mounted on the fixed plate 8. The central rotating shaft 10 is rotatably mounted at the center of the fixed plate 8. The connecting frame 6 is rotatably mounted on the central rotating shaft 10. The fixed plate 8 is fixed to the tail section of the buffer plate 4 by connecting nuts. Lower rotating shafts 11 are fixedly installed on both sides of the central rotating shaft 10 on the fixed plate 8. There are two lower rotating shafts 11, which are respectively installed on both sides of the central rotating shaft 10 and are also installed on the fixed plate 8. Like the central rotating shaft 10, they are rotatable. Two pairs of track grooves 12 are symmetrically opened on the connecting frame 6. Limiting rings 13 are fixedly installed inside the track grooves 12. In this embodiment, the connecting frame 6 has two pairs of track grooves 12, and limiting rings 13 are fixedly installed inside the track grooves 12. The upper rotating shaft 14 is slidably installed inside the limiting rings 13. The two sets of spring assemblies in this embodiment have the same structure, except that the corresponding limiting rings 13, track grooves 12 and buffer springs 15 are different. The structure is the same. In this embodiment, the elastic coefficient of the buffer spring 15 near the front of the foot 2 is greater than that of the other buffer spring 15. In this embodiment, the two ends of the upper rotating shaft 14 are slidably installed inside the limiting rings 13. The upper rotating shaft 14 is slidably installed inside the two limiting rings 13. The spring assembly is installed between the upper rotating shaft 14 and the lower rotating shaft 11.

[0019] The spring assembly includes a buffer spring 15. An upper connecting block 16 and a lower connecting block 17 are fixedly mounted at both ends of the buffer spring 15. The upper connecting block 16 is rotatably mounted on an upper rotating shaft 14, and the lower connecting block 17 is rotatably mounted on a lower rotating shaft 11. In this embodiment, the spring assembly is replaceable to prevent the buffer spring 15 from becoming fatigued after prolonged use and being unable to be replaced. This embodiment has two sets of spring assemblies, one near the front of the foot 2 and the other near the rear of the foot 2. The spring spring 15 in the spring assembly near the front of the foot 2 has a higher elastic coefficient than the spring spring 15 in the other set. This embodiment's spring assembly consists of three parts: the upper connecting block 16, the lower connecting block 17, and the buffer spring 15 positioned between the upper connecting block 16 and the lower connecting block 17.

[0020] The upper connecting block 16 is rotatably mounted on the upper rotating shaft 14, and the lower connecting block 17 is rotatably mounted on the lower rotating shaft 11. When the buffer spring 15 experiences elastic fatigue, the entire spring assembly can be replaced as a whole. Alternatively, the buffer spring 15 can be detachably fixed between the upper connecting block 16 and the lower connecting block 17 using screws or other means. In this way, when the buffer spring 15 experiences elastic fatigue, it can be replaced individually. In this embodiment, the upper rotating shaft 14 has threads at both ends. The upper rotating shaft 14 is slidably mounted inside the two limiting rings 13 by the cooperation of nuts. The upper connecting block 16 is sleeved on the upper rotating shaft 14 through a through hole, thus rotatably mounting the upper connecting block 16 on the upper rotating shaft 14. In this embodiment, the lower rotating shaft 11 is rotatably mounted on the fixing plate 8, and the lower connecting block 17 is rotatably mounted on the lower rotating shaft 11 using the same principle.

[0021] The connecting frame 6 has an installation groove 18, which is movably fitted onto both ends of the central rotating shaft 10. The central rotating shaft 10 has threads 19 at both ends. In this embodiment, the connecting frame 6 has an installation groove 18 at its lower end. The installation groove 18 facilitates the connection frame 6 being fitted onto the central rotating shaft 10. After the connecting frame 6 is fitted onto the central rotating shaft 10, the limiting sleeve 20 is fitted onto both ends of the central rotating shaft 10. At this time, the connecting frame 6 is inside the limiting sleeve 20. Then, the limiting nut 21 is screwed onto the thread 19. This completes the operation of rotating the connecting frame 6 onto the central rotating shaft 10. In this embodiment, the upper end of the connecting frame 6 is flat, which facilitates the installation of the connecting part 7. The lower end of the connecting frame 6 is semi-circular, which prevents it from squeezing against the fixing plate 8 during rotation. After this setting, the entire connecting frame 6 can rotate as a whole. At the same time, the setting of two sets of spring assemblies achieves a better buffering effect, and the structures do not affect each other's rotation.

[0022] Limiting sleeves 20 are movably sleeved at both ends of the central rotating shaft 10. When the connecting frame 6 is sleeved on the central rotating shaft 10, it is located inside the limiting sleeve 20. Limiting nuts 21 for limiting the limiting sleeve 20 are provided at both ends of the central rotating shaft 10. In this embodiment, the diameter of the mounting groove 18 is larger than the diameter of the central rotating shaft 10, and the diameter of the limiting sleeve 20 is larger than the diameter of the mounting groove 18. In this way, the limiting sleeve 20 can effectively limit the connecting frame 6 to rotate on the central rotating shaft 10.

[0023] Stabilizing grooves 22 are provided on the front section of the foot 2 and the base plate 3 to facilitate fixed placement. In this embodiment, the stabilizing grooves 22 are provided so that the entire device can be fixed through the stabilizing grooves 22 when the whole device is not in use. The fixing method here is not elaborated and is a known technology.

[0024] Working principle: During the use of this device, the user can first fix the prosthetic part 1 to the connecting part 7 with the buckle, thus completing the installation, and then put the residual limb into the inside of the prosthetic part 1; When the user walks, the force on the prosthesis 1 will act on the rear part of the buffer plate 4. At this time, the buffer plate 4 achieves a buffering effect due to the elasticity of its material. Meanwhile, the buffer space 5 allows the rear part of the buffer plate 4 to move downward. When the force is no longer applied, the buffer plate 4 can return to its original position under its own action. During the movement, the connecting frame 6 can rotate around the central pivot 10 and repeatedly squeeze the two buffer components. When the buffer components are squeezed, the lower connecting block 17 rotates around the lower pivot 11 but its position remains unchanged. During the rotation of the upper connecting block 16 around the upper pivot 14, the upper pivot 14 can slide up and down inside the limiting ring 13 to ensure the feasibility of the overall structure. At the same time, the spring assembly realizes the second stage of buffering. When the buffer plate 4 or the buffer spring 15 experiences elastic fatigue after prolonged use, the individual parts can be replaced. The entire device is highly modular, making it easy to use, maintain, and replace subsequent components.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prosthetic support device for use after orthopedic amputation, comprising a prosthetic portion (1) and a foot portion (2), characterized in that: The foot (2) includes a base plate (3) and a buffer plate (4). The front ends of the base plate (3) and the buffer plate (4) are integral. The buffer plate (4) is inclined. A buffer space (5) is provided between the buffer plate (4) and the tail section of the base plate (3). A buffer assembly is provided on the tail section of the buffer plate (4), a connecting frame (6) is provided on the buffer assembly, and a connecting part (7) is fixedly provided on the connecting frame (6). The connecting part (7) is used to make a movable connection to the prosthetic part (1).

2. The prosthetic support device for postoperative amputation in orthopedic surgery according to claim 1, characterized in that: The buffer assembly includes a fixing plate (8) disposed at the tail end of the buffer plate (4), the fixing plate (8) being fixed to the buffer plate (4) by fixing bolts (9); A central rotating shaft (10) is rotatably mounted on the fixed plate (8), and the connecting frame (6) is rotatably mounted on the central rotating shaft (10). The fixed plate (8) is fixed to the tail section of the buffer plate (4) by a connecting nut. The fixed plate (8) has a lower rotating shaft (11) fixedly installed on both sides of the central rotating shaft (10). The connecting frame (6) has two pairs of track grooves (12) symmetrically opened. The track grooves (12) are fixedly installed with limit rings (13). The upper rotating shafts (14) are slidably installed inside the two limit rings (13). A spring assembly is installed between the upper rotating shafts (14) and the lower rotating shafts (11).

3. A prosthetic support device for postoperative amputation in orthopedic surgery according to claim 2, characterized in that: The spring assembly includes a buffer spring (15), with an upper connecting block (16) and a lower connecting block (17) fixedly disposed at both ends of the buffer spring (15). The upper connecting block (16) is rotatably disposed on the upper rotating shaft (14), and the lower connecting block (17) is rotatably disposed on the lower rotating shaft (11).

4. A prosthetic support device for postoperative amputation in orthopedic surgery according to claim 3, characterized in that: The connecting frame (6) is provided with an installation groove (18), which is movably sleeved on both ends of the central rotating shaft (10), and the two ends of the central rotating shaft (10) are provided with threads (19). The two ends of the central rotating shaft (10) are movably fitted with limiting sleeves (20). When the connecting frame (6) is fitted on the central rotating shaft (10), it is inside the limiting sleeves (20). The two ends of the central rotating shaft (10) are provided with limiting nuts (21) for limiting the limiting sleeves (20).

5. A prosthetic support device for postoperative amputation in orthopedic surgery according to claim 3, characterized in that: The spring constant of the buffer spring (15) near the front of the foot (2) is greater than the spring constant of the other buffer spring (15).

6. A prosthetic support device for postoperative amputation in orthopedic surgery according to claim 1, characterized in that: The front section of the foot (2) and the bottom plate (3) are provided with stabilizing grooves (22) to facilitate fixed placement.

7. A prosthetic support device for postoperative amputation in orthopedic surgery according to claim 1, characterized in that: The bottom surface of the base plate (3) is arc-shaped.

8. A prosthetic support device for postoperative amputation in orthopedic surgery according to claim 1, characterized in that: The prosthetic part (1) and the connecting part (7) are connected by a snap fastener.

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