Knee joint fixing device

Abstract

The utility model discloses a knee joint fixing device which comprises a thigh sleeve and a shank sleeve, the thigh sleeve is provided with a replacement mechanism, the replacement mechanism comprises a middle plate, a fixing plate, a positioning rod, an insertion rod, a fixing sleeve, a clamping rod, a fixing mechanism and an unfastening mechanism, the middle plate is rotationally connected to the thigh sleeve and the shank sleeve respectively, and the positioning rod is arranged on the positioning rod. The fixing plates of the knee joint fixing device can be conveniently replaced through the design of the replacing mechanism, and an operator can rapidly install the fixing plates of different sizes or shapes between the thigh sleeve and the shank sleeve through the combination of the middle plate, the positioning rod, the inserting rod, the fixing sleeve and the clamping rod. And meanwhile, stable fixation of the fixing plate is ensured through cooperation of an inserting rod and a fixing sleeve, in addition, the fixing plate can be rapidly locked during replacement through configuration of a clamping rod and an annular groove, and operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of knee joint fixation devices, and more particularly to a knee joint fixation device. Background Art

[0002] In existing medical technologies, knee fixation devices are important tools for treating knee injuries or post-operative recovery. At the same time, the knee joint also needs to be fixed when conducting relevant examinations in the radiology department to facilitate better examinations. However, existing knee fixation devices have certain limitations in actual use. Because the degree of knee injury and recovery needs vary from patient to patient, fixation plates of different strengths and sizes are needed to adapt to various situations. However, the fixation plate replacement process of existing equipment is not convenient, which brings inconvenience to patients and affects the treatment effect.

[0003] Specifically, replacing the fixation plate of existing knee fixation devices typically involves multiple steps, such as disassembly, positioning, and installation. These steps are not only tedious and time-consuming, but also require a certain level of technical proficiency. Furthermore, the connection between the fixation plate and the device may have design complexities, such as specialized fixing structures or fasteners. While these designs ensure a certain degree of stability, they also increase the difficulty of replacing the fixation plate. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the problems existing in the prior art, the present invention provides a knee joint fixation device to solve the technical problems mentioned in the background technology.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a knee joint fixation device, comprising a thigh sleeve and a calf sleeve, the thigh sleeve being provided with a replacement mechanism, the replacement mechanism comprising an intermediate plate, a fixing plate, a positioning rod, an insertion rod, a fixing sleeve, a clamping rod, a fixing mechanism and a release mechanism, the intermediate plate being rotatably connected to the thigh sleeve and the calf sleeve respectively, the insertion rod being installed on the intermediate plate, a plurality of positioning rods being installed on the thigh sleeve and the calf sleeve respectively, a positioning hole being opened on the fixing plate, the positioning rod being inserted into the positioning hole, the fixing sleeve being inserted into the insertion rod, the fixing sleeve being pressed on the fixing plate, the clamping rod being slidably connected to the fixing sleeve, the fixing mechanism and the release mechanism being respectively installed on the fixing sleeve.

[0008] The utility model is further configured such that a plurality of annular grooves are provided on the side wall of the insertion rod, and the clamping rod is inserted into the annular grooves. This design enables the clamping rod to slide and position flexibly between the thigh sleeve and the calf sleeve, thereby improving the adjustability and adaptability of the fixing device.

[0009] The utility model is further configured such that the fixing mechanism includes a follower frame, a push plate and a baffle, the follower frame is mounted on the clamping rod, the push plate is slidably connected to the fixing sleeve, the baffle is mounted on the push plate, and the baffle abuts against the follower frame. This design enables the fixing mechanism to provide uniform clamping between the thigh sleeve and the calf sleeve, thereby ensuring stable fixation of the knee joint.

[0010] The utility model is further configured such that a plurality of the baffles are respectively provided with a follower ring, and the follower ring and the fixed sleeve are coaxially arranged. This design enables the baffle to rotate coaxially with the fixed sleeve when fixed, thereby improving the flexibility and adjustability of the fixing device.

[0011] The utility model is further configured as follows: the unfastening mechanism includes an unfastening sleeve and an unfastening rod, the unfastening sleeve is installed on the push plate, the unfastening sleeve is slidably connected to the fixed sleeve, the unfastening rod is installed on the follower frame, and a sliding groove is provided on the side wall of the unfastening sleeve. This design enables the unfastening mechanism to quickly and smoothly unfasten the fixed plate, thereby improving the adjustability and convenience of the fixing device.

[0012] The utility model is further configured such that a hexagonal rod is provided on the insertion rod, and the hexagonal rod is inserted into the fixing sleeve. This design enables the insertion rod to be tightly connected to the fixing sleeve, thereby improving the stability and durability of the fixing device.

[0013] The utility model is further configured such that a plurality of follower frames are provided, and each of the plurality of follower frames is provided with a tension spring, which is mounted on the side wall of the fixing sleeve. This design enables the follower frame to obtain appropriate elastic support when fixed, thereby improving the stability and reliability of the fixing device.

[0014] The utility model is further configured such that the thigh sleeve and the calf sleeve are respectively provided with Velcro and a limiting ring. This design enables the thigh sleeve and the calf sleeve to fit tightly together. At the same time, the limiting ring can limit the relative position of the thigh sleeve and the calf sleeve, thereby improving the stability and safety of the fixing device.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a knee joint fixation device with the following beneficial effects:

[0017] 1. The design of the replacement mechanism enables convenient replacement of the fixation plate of the knee joint fixation device. Through the combination of the intermediate plate, positioning rod, insertion rod, fixing sleeve and clamping rod, the operator can quickly install fixation plates of different sizes or shapes between the thigh sleeve and the calf sleeve. At the same time, the cooperation between the insertion rod and the fixing sleeve ensures the stable fixation of the fixation plate. In addition, the configuration of the clamping rod and annular groove enables the fixation plate to be quickly locked during replacement, improving the convenience of operation.

[0018] 2. The design of the fixing mechanism realizes a firm connection between the thigh sleeve and the calf sleeve. Through the combination of the follower frame, push plate, baffle and follower ring, the operator can easily complete the fixing process of the fixing plate. The configuration of the follower frame and push plate enables the fixing plate to obtain appropriate pressure when fixing, ensuring the firmness of the connection. In addition, the configuration of the baffle and follower ring enables the fixing plate to be evenly stressed when fixing, improving the consistency of the fixing effect.

[0019] 3. The design of the release mechanism enables the knee joint fixation device to easily release the fixing plate. Through the combination of the release sleeve, release rod and slide, the operator can quickly release the fixing plate from between the thigh sleeve and the calf sleeve. At the same time, the cooperation between the release sleeve and the slide ensures the smooth release of the fixing plate. In addition, the configuration of the follower frame and the tension spring enables the fixing plate to be released quickly when released, improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a knee joint fixation device in the present utility model;

[0021] Figure 2 This is a schematic structural diagram of the fixing sleeve and the insertion rod in the present invention;

[0022] Figure 3 For this utility model Figure 2 Schematic diagram of the cross-sectional structure;

[0023] Figure 4 This is a structural diagram of the clamping rod in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the push plate in the utility model.

[0025] In the figure: 1. Thigh sleeve; 2. Calf sleeve; 3. Middle plate; 4. Fixing plate; 5. Positioning rod; 6. Insertion rod; 7. Fixing sleeve; 8. Connecting rod; 9. Positioning hole; 10. Annular groove; 11. Follow-up frame; 12. Push plate; 13. Baffle; 14. Follow-up ring; 15. Release sleeve; 16. Release rod; 17. Slide groove; 18. Hexagonal rod; 19. Tension spring; 20. Velcro; 21. Limiting ring. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0029] See also Figure 1-5 A knee joint fixation device includes a thigh sleeve 1 and a calf sleeve 2. The thigh sleeve 1 is provided with a replacement mechanism, which includes an intermediate plate 3, a fixing plate 4, a positioning rod 5, an insertion rod 6, a fixing sleeve 7, a clamping rod 8, a fixing mechanism and an unlocking mechanism. The intermediate plate 3 is rotatably connected to the thigh sleeve 1 and the calf sleeve 2 respectively. The insertion rod 6 is installed on the intermediate plate 3. A plurality of positioning rods 5 are installed on the thigh sleeve 1 and the calf sleeve 2 respectively. A positioning hole 9 is opened on the fixing plate 4. The positioning rod 5 is inserted into the positioning hole 9, the fixing sleeve 7 is inserted into the insertion rod 6, the fixing sleeve 7 is pressed on the fixing plate 4, and the clamping rod 8 is slidably connected On the fixing sleeve 7, the fixing mechanism and the unlocking mechanism are respectively installed on the fixing sleeve 7, and a plurality of annular grooves 10 are opened on the side wall of the insertion rod 6. The clamping rod 8 is inserted into the annular groove 10. The fixing mechanism includes a follower frame 11, a push plate 12 and a baffle 13. The follower frame 11 is installed on the clamping rod 8, and the push plate 12 is slidably connected to the fixing sleeve 7. The baffle 13 is installed on the push plate 12, and the baffle 13 abuts against the follower frame 11. A plurality of baffles 13 are respectively provided with a follower ring 14, and the follower ring 14 and the fixing sleeve 7 are coaxially arranged. The thigh sleeve 1 and the calf sleeve 2 are respectively provided with Velcro 20 and a limit ring 21.

[0030] In this embodiment, when it is necessary to select different fixing plates 4, first install the positioning holes 9 on the fixing plate 4 in the corresponding positioning rods 5 respectively, and at the same time insert the rod 6 through the fixing plate 4, and then sleeve the fixing sleeve 7 on the insertion rod 6, and then insert the hexagonal rod 18 into the fixing sleeve 7, and insert the clamping rod 8 into the annular groove 10 under the action of the tension spring 19, thereby completing the fixation of the fixing sleeve 7, and then the fixing sleeve 7 is pressed on the fixing plate 4, thereby ensuring the fixation between the thigh sleeve 1 and the calf sleeve 2, and then the baffle 13 is pressed on the follower frame 11, thereby completing the fixing process, and then under the action of the Velcro 20 and the limiting ring 21, the thigh and calf are fixed, thereby completing the fixation of the knee joint.

[0031] See also Figure 3 and Figure 4, as an implementation method of the untying mechanism: the untying mechanism includes an untying sleeve 15 and an untying rod 16, the untying sleeve 15 is installed on the push plate 12, the untying sleeve 15 is slidably connected to the fixed sleeve 7, the untying rod 16 is installed on the follow-up frame 11, and a slide groove 17 is provided on the side wall of the untying sleeve 15, and a hexagonal rod 18 is provided on the insertion rod 6, and the hexagonal rod 18 is inserted into the fixed sleeve 7. There are multiple follow-up frames 11, and multiple follow-up frames 11 are respectively provided with tension springs 19, and the tension springs 19 are installed on the side walls of the fixed sleeve 7.

[0032] More specifically, when it is necessary to unlock, the push plate 12 is rotated to the position where the slide groove 17 is aligned with the clamping rod 8, and then the push plate 12 is driven to slide, so that the unlocking sleeve 15 abuts against the unlocking rod 16, and then the follower frame 11 is pushed outward to unlock the clamping rod 8 and the annular groove 10, thereby completing the unlocking process, and then the corresponding fixed plate 4 can be replaced.

[0033] In summary, when the overall device is in use or running: when it is necessary to select different fixing plates 4, first install the positioning holes 9 on the fixing plates 4 into the corresponding positioning rods 5, and at the same time insert the rod 6 through the fixing plate 4, and then sleeve the fixing sleeve 7 onto the insert rod 6, and then insert the hexagonal rod 18 into the fixing sleeve 7, and insert the clamping rod 8 into the annular groove 10 under the action of the tension spring 19, thereby completing the fixation of the fixing sleeve 7, and then the fixing sleeve 7 is pressed against the fixing plate 4, thereby ensuring the fixation between the thigh sleeve 1 and the calf sleeve 2, and then the blocking The plate 13 is pressed on the follower frame 11, thereby completing the fixing process, and then the fixation of the thigh and calf is ensured under the action of the Velcro 20 and the limiting ring 21, thereby completing the fixation of the knee joint. When it needs to be unlocked, the push plate 12 is rotated to the position where the slide groove 17 is aligned with the clamping rod 8, and then the push plate 12 is driven to slide, so that the unlocking sleeve 15 contacts the unlocking rod 16, and then the follower frame 11 is pushed outward to unlock the clamping rod 8 and the annular groove 10, thereby completing the unlocking process, and then the corresponding fixing plate 4 can be replaced.

[0034] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A knee joint fixation device, comprising a thigh sleeve (1) and a calf sleeve (2), characterized in that: The thigh sleeve (1) is provided with a replacement mechanism, which includes an intermediate plate (3), a fixing plate (4), a positioning rod (5), an insertion rod (6), a fixing sleeve (7), a clamping rod (8), a fixing mechanism and a release mechanism. The intermediate plate (3) is rotatably connected to the thigh sleeve (1) and the calf sleeve (2), the intermediate plate (3) is provided with an insertion rod (6), and the thigh sleeve (1) and the calf sleeve (2) are provided with a plurality of positioning rods (5). The fixing plate (4) is provided with a positioning hole (9), the positioning rod (5) is inserted into the positioning hole (9), the fixing sleeve (7) is inserted into the insertion rod (6), the fixing sleeve (7) is pressed on the fixing plate (4), the clamping rod (8) is slidably connected to the fixing sleeve (7), and the fixing mechanism and the release mechanism are respectively installed on the fixing sleeve (7).

2. A knee joint fixation device according to claim 1, characterized in that: A plurality of annular grooves (10) are provided on the side wall of the insertion rod (6), and the clamping rod (8) is inserted into the annular grooves (10).

3. The knee joint fixation device according to claim 2, characterized in that: The fixing mechanism comprises a follower frame (11), a push plate (12) and a baffle (13); the follower frame (11) is mounted on the clamping rod (8); the push plate (12) is slidably connected to the fixing sleeve (7); the baffle (13) is mounted on the push plate (12); and the baffle (13) abuts against the follower frame (11).

4. The knee joint fixation device according to claim 3, characterized in that: A plurality of baffles (13) are respectively provided with a follower coil (14), and the follower coil (14) and the fixed sleeve (7) are coaxially arranged.

5. The knee joint fixation device according to claim 4, characterized in that: The untying mechanism comprises an untying sleeve (15) and an untying rod (16), wherein the untying sleeve (15) is mounted on the push plate (12), the untying sleeve (15) is slidably connected to the fixed sleeve (7), the untying rod (16) is mounted on the follower frame (11), and a sliding groove (17) is provided on the side wall of the untying sleeve (15).

6. The knee joint fixation device according to claim 5, characterized in that: The insertion rod (6) is provided with a hexagonal rod (18), and the hexagonal rod (18) is inserted into the fixing sleeve (7).

7. The knee joint fixation device according to claim 6, characterized in that: A plurality of follower frames (11) are provided, and each of the plurality of follower frames (11) is provided with a tension spring (19), which is installed on the side wall of the fixing sleeve (7).

8. The knee joint fixation device according to claim 1, characterized in that: The thigh sleeve (1) and the calf sleeve (2) are respectively provided with a Velcro (20) and a limiting ring (21).

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