Internal fixation device for hallux valgus orthopedic surgery
By designing an internal fixing device including adjustment plates, curved plates and other structures, the problem of the inability to replace curved plates according to different metatarsals in the prior art is solved, and a more stable and flexible surgical fixation effect is achieved.
Patent Information
- Application Number
- CN202421041876.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The prior art cannot replace the curved plate according to the different metatarsal bones, resulting in insufficient fixation in valgus orthopedic surgery.
An internal fixing device is designed, including an adjustment plate, a curved plate, a rotary rod, a winding block, a drawstring, a connecting plate, a spring and a clamp. Through the mutual cooperation of these structures, the arc plate can be replaced according to the patient's different conditions and the distance and angle between the arc plates can be adjusted.
The curved plate is replaced and adjusted according to the different patients, ensuring the accuracy of metatarsal positioning and flexibility of surgical operation, and improving the stability and efficiency of the surgery.
Smart Images
Figure CN222676410U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical instruments, in particular to an internal fixation device used in hallux valgus correction surgery. Background Art
[0002] Hallux valgus is a common foot deformity characterized by the big toe tilting outward, often accompanied by pain and difficulty walking. In order to correct this deformity, doctors usually need to perform hallux valgus correction surgery. During the operation, the internal fixation device plays a vital role, which can help doctors accurately correct the bone position and promote postoperative recovery.
[0003] In the prior art, the metatarsal bones are often fixed during surgery by means of an arc plate and a fixing plate, thereby preventing displacement during surgery and facilitating the doctor's operation. However, there are still some shortcomings. The prior art cannot replace the arc plate according to the difference in metatarsal bones. In actual applications, the metatarsal bones of each patient are different. Some patients have wider metatarsal bones, while others have narrower ones. This difference means that the fixing method in the prior art is not always able to adapt to the specific conditions of the patient. Therefore, during surgery, the fixation may not be stable or flexible enough. For this reason, an internal fixation device for hallux valgus correction surgery is proposed to solve the above problems. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides an internal fixation device for hallux valgus correction surgery, aiming to improve the problem in the prior art that the arc plate cannot be replaced according to the difference of metatarsal bones.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an internal fixation device for hallux valgus corrective surgery, comprising an adjusting plate, one end of the adjusting plate is provided with a limiting plate, the other end of the adjusting plate is fixedly connected to a connecting block, one end of the connecting block is provided with an arc plate, the middle part of the arc plate is provided with a fastening screw, the inside of the connecting block is rotatably connected to a rotating rod, the middle part of the rotating rod is fixedly connected to a winding block, the middle part of the winding block is fixedly connected to a pull rope, one end of the pull rope is fixedly connected to the connecting plate, one side of the connecting plate is fixedly connected to a spring, the other side of the connecting plate is fixedly connected to a clamping block, a clamping groove is opened inside the arc plate, the clamping groove and the clamping block are clamped together, and a connecting component is provided on the top of the rotating rod.
[0006] As a further description of the above technical solution:
[0007] The connecting component comprises a second card slot, which is arranged at the top of the rotating rod, a second card block is slidably connected to the middle of the second card slot, and a rotating button is fixedly connected to the top of the second card block.
[0008] As a further description of the above technical solution:
[0009] One end of the adjustment plate is fixedly connected to an extension plate, and the extension plate is slidably connected to the middle part of the limiting plate. A second fastening screw is provided in the middle part of the limiting plate, and a second threaded hole is opened in the middle part of the extension plate. The second threaded hole is threadedly connected to the second fastening screw.
[0010] As a further description of the above technical solution:
[0011] Specifically, two connecting plates are provided, and both connecting plates are slidably connected to the inside of the connecting block.
[0012] As a further description of the above technical solution:
[0013] A plurality of third threaded holes are provided in the middle of the limiting plate, an adjusting screw is threadedly connected to the middle of the third threaded hole, and the adjusting screw is threadedly connected to the middle of the second threaded hole through the third threaded hole.
[0014] As a further description of the above technical solution:
[0015] Specifically, two connecting blocks are provided, and one of the connecting blocks is fixedly connected to one end of the limiting plate.
[0016] As a further description of the above technical solution:
[0017] Specifically, two of the card blocks 1 are provided, and both of the two card blocks 1 are slidably connected to the interior of the connecting block.
[0018] The utility model has the following beneficial effects:
[0019] 1. In the utility model, through the mutual cooperation of the spring, the connecting plate, the winding block, the pull rope, the clamping block and the like, the arc plate can be replaced according to the different patients, so as to conveniently position the metatarsal bones and facilitate the operation of the doctor.
[0020] 2. In the utility model, with the cooperation of the extension plate, the second fastening screw, the adjusting screw, the third threaded hole, the second threaded hole and other structures, the distance between the two arc-shaped plates can be adjusted, and the angle can be adjusted at the same time, so as to facilitate the angle adjustment according to the different metatarsals of the patient, thereby facilitating the doctor's operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a three-dimensional schematic diagram of an internal fixation device for hallux valgus correction surgery proposed by the utility model;
[0022] Figure 2This is a schematic structural diagram of an arc-shaped plate of an internal fixation device for hallux valgus correction surgery proposed by the utility model;
[0023] Figure 3 This is a schematic structural diagram of a spring of an internal fixation device for hallux valgus correction surgery proposed by the utility model;
[0024] Figure 4 This is a schematic structural diagram of a rotating knob of an internal fixation device for hallux valgus correction surgery proposed by the utility model;
[0025] Figure 5 This is a structural schematic diagram of a fastening screw 2 of an internal fixation device for hallux valgus correction surgery proposed by the utility model;
[0026] Figure 6 This is a schematic diagram of the structure of an adjusting screw of an internal fixation device for hallux valgus correction surgery proposed by the utility model;
[0027] Figure 7 The utility model is a schematic structural diagram of an extension plate of an internal fixation device for hallux valgus correction surgery.
[0028] Legend:
[0029] 1. Adjustment plate; 2. Limit plate; 3. Arc plate; 4. Fastening screw 1; 5. Fastening screw 2; 6. First threaded hole; 7. Slot 1; 8. Connecting block; 9. Block 1; 10. Connecting plate; 11. Spring; 12. Turning rod; 13. Pull rope; 14. Winding block; 15. Turning knob; 16. Block 2; 17. Slot 2; 18. Extension plate; 19. Second threaded hole; 20. Third threaded hole; 21. Adjustment screw. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] Reference Figure 1-Figure 3The utility model provides an embodiment: an internal fixation device for hallux valgus correction surgery, comprising an adjusting plate 1, one end of the adjusting plate 1 is provided with a limiting plate 2, the other end of the adjusting plate 1 is fixedly connected with a connecting block 8, one end of the connecting block 8 is provided with an arc plate 3, the connecting block 8 is convenient for connecting and fixing the arc plate 3 and the adjusting plate 1, the middle part of the arc plate 3 is provided with a fastening screw 4, the fastening screw 4 is convenient for fixing the arc plate 3, the internal rotation of the connecting block 8 is connected with a rotating rod 12, the middle part of the rotating rod 12 is fixedly connected with a winding block 14, when the rotating rod 12 rotates, it will drive the winding block 14 to rotate at the same time, the middle part of the winding block 14 is fixedly connected with a pull rope 13, when the winding block 14 rotates, it will drive the pull rope 13 to move and wind up the pull rope 13.
[0032] Reference Figure 2 and Figure 3 One end of the pull rope 13 is fixedly connected to the connecting plate 10, and when the pull rope 13 moves, the connecting plate 10 will be pulled to move. A spring 11 is fixedly connected to one side of the connecting plate 10, and the spring 11 will be squeezed when the connecting plate 10 moves. A clamping block 9 is fixedly connected to the other side of the connecting plate 10. A clamping groove 7 is provided inside the arc plate 3, and the clamping groove 7 and the clamping block 9 are clamped together. When the connecting plate 10 squeezes the spring 11, it will drive the clamping block 9 to move, so that the clamping block 9 is separated from the clamping groove 7. When the clamping block 9 is separated from the clamping groove 7, the arc plate 3 can be conveniently replaced according to different patients, so that the metatarsal can be positioned more conveniently. A connecting component is provided on the top of the rotating rod 12.
[0033] Reference Figure 4 , Figure 5 and Figure 6 The connecting component includes a second card slot 17, which is provided at the top of the rotating rod 12. The middle of the second card slot 17 is slidably connected with a second card block 16. The top of the second card block 16 is fixedly connected with a knob 15. When the knob 15 is rotated, the second card block 16 is driven to rotate. When the second card block 16 is rotated, the rotating rod 12 is driven to rotate through the second card slot 17. One end of the adjusting plate 1 is fixedly connected with an extension plate 18. The extension plate 18 is slidably connected to the middle of the limiting plate 2. The extension plate 18 is convenient for adjusting the distance between the two arc plates 3. The extension plate 18 is long, so that it is convenient to fix the metatarsal bones according to the different patients and reduce the operation time. A fastening screw 25 is provided in the middle of the limiting plate 2, and a second threaded hole 19 is opened in the middle of the extension plate 18. The second threaded hole 19 and the fastening screw 25 are threadedly connected. The fastening screw 25 and the second threaded hole 19 are convenient for fixing the extended extension plate 18, so as to facilitate the doctor's operation. At the same time, the angle between the adjustment plate 1 and the limiting plate 2 can be adjusted by the mutual cooperation between the adjusting screw 21 and the third threaded hole 20.
[0034] Reference Figure 5-Figure 7 When adjusting the angle, the fastening screw 25 and the adjusting screw 21 are rotated to make the fastening screw 25 and the adjusting screw 21 disengage from the limiting plate 2. After disengagement, the extension plate 18 is driven to move to one side by pulling the adjusting plate 1. When it reaches the required position, the adjusting plate 1 is rotated to make the extension plate 18 slide in the middle of the limiting plate 2. When it slides to the required position, the adjusting screw 21 is rotated to make the adjusting screw 21 pass through the third threaded hole 20 and the second threaded hole 19 on the extension plate 18 to be connected and fixed. After the fixation is completed, the fastening screw 25 is rotated to make the fastening screw 25 pass through the first screw hole 6 and the second threaded hole 19 on the extension plate 18 to be connected and fixed, so as to facilitate adjustment according to the different metatarsals of the patient, and then facilitate the operation of the doctor. The adjusting plate 1 is convenient for adjusting the angle according to the different metatarsals of the patient, and one end of the limiting plate 2 is a hollow end, so as to facilitate the sliding adjustment of the extension plate 18 in the middle thereof. At the same time, the limiting plate 2 can conveniently fix the extension plate 18 and the adjusting plate 1.
[0035] Reference Figure 2 and Figure 3 Specifically, two connecting plates 10 are provided, and both connecting plates 10 are slidably connected to the inside of the connecting block 8. A plurality of third threaded holes 20 are opened in the middle of the limiting plate 2. An adjusting screw 21 is threadedly connected to the middle of the third threaded hole 20. The adjusting screw 21 is threadedly connected to the middle of the second threaded hole 19 through the third threaded hole 20.
[0036] Reference Figure 3 and Figure 6 There are two connecting blocks 8, one of which is fixedly connected to one end of the limiting plate 2. The connecting block 8 is convenient for connecting the limiting plate 2 and the arc plate 3. There are two clamping blocks 9, and both clamping blocks 9 are slidably connected to the inside of the connecting block 8.
[0037] Working principle: when the arc plate 3 is replaced, the block 2 16 is inserted into the slot 2 17. After the block 2 16 is inserted into the slot 2 17, the knob 15 can be rotated, and the rotating knob 15 will drive the block 2 16 to rotate at the same time. When the block 2 16 rotates, the rotating rod 12 will be driven to rotate at the same time through the slot 2 17. When the rotating rod 12 rotates, the winding block 14 will be driven to rotate. When the winding block 14 rotates, the pull rope 13 will be driven to move. When the pull rope 13 moves, it will pull the connecting plate 10 to move. When the connecting plate 10 moves, it will squeeze the spring 11. When the connecting plate 10 squeezes the spring 11, it will drive the block 1 9 to move, so that the block 1 9 is separated from the slot 1 7, so that the arc plate 3 can be replaced according to different patients, so that the metatarsal can be positioned more conveniently.
[0038] When the two arc plates 3 are adjusted according to different patients, the fastening screw 25 and the adjusting screw 21 are disengaged from the limiting plate 2 by rotating them. When the fastening screw 25 and the adjusting screw 21 are disengaged from the limiting plate 2, the adjusting plate 1 can be pulled to drive the extension plate 18 to extend. When extended to the required position, the fastening screw 25 and the adjusting screw 21 are rotated to connect and fix the fastening screw 25 and the adjusting screw 21 through the limiting plate 2 and the extension plate 18.
[0039] When the angle needs to be adjusted, the fastening screw 25 and the adjusting screw 21 are rotated to make the fastening screw 25 and the adjusting screw 21 disengage from the limiting plate 2. After disengagement, the extension plate 18 is driven to move to one side by pulling the adjusting plate 1. When it reaches the required position, the adjusting plate 1 is rotated to make the extension plate 18 slide in the middle of the limiting plate 2. When it slides to the required position, the adjusting screw 21 is rotated to make the adjusting screw 21 connected and fixed through the third threaded hole 20 and the second threaded hole 19 on the extension plate 18. After the fixation is completed, the fastening screw 25 is rotated to make the fastening screw 25 connected and fixed through the first screw hole 6 and the second threaded hole 19 on the extension plate 18, thereby facilitating the angle adjustment according to the different metatarsals of the patient, and thus facilitating the doctor's operation.
[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An internal fixation device for hallux valgus correction surgery, comprising an adjustment plate (1), characterized in that: A limiting plate (2) is provided at one end of the adjusting plate (1), and a connecting block (8) is fixedly connected to the other end of the adjusting plate (1). An arc plate (3) is provided at one end of the connecting block (8), and a fastening screw (4) is provided in the middle of the arc plate (3). A rotating rod (12) is rotatably connected inside the connecting block (8), and a winding block (14) is fixedly connected to the middle of the rotating rod (12), and a pull rope (13) is fixedly connected to the middle of the winding block (14), and one end of the pull rope (13) is fixedly connected to the connecting plate (10), and a spring (11) is fixedly connected to one side of the connecting plate (10), and a clamping block (9) is fixedly connected to the other side of the connecting plate (10). A clamping groove (7) is provided inside the arc plate (3), and the clamping groove (7) and the clamping block (9) are clamped together. A connecting component is provided on the top of the rotating rod (12).
2. The internal fixation device for hallux valgus correction surgery according to claim 1, characterized in that: The connecting assembly comprises a second card slot (17), wherein the second card slot (17) is arranged at the top of the rotating rod (12), a second card block (16) is slidably connected to the middle of the second card slot (17), and a rotating button (15) is fixedly connected to the top of the second card block (16).
3. The internal fixation device for hallux valgus correction surgery according to claim 1, characterized in that: One end of the adjustment plate (1) is fixedly connected to an extension plate (18), and the extension plate (18) is slidably connected to the middle part of the limit plate (2). A second fastening screw (5) is provided in the middle part of the limit plate (2). A second threaded hole (19) is opened in the middle part of the extension plate (18), and the second threaded hole (19) and the second fastening screw (5) are threadedly connected.
4. The internal fixation device for hallux valgus correction surgery according to claim 1, characterized in that: Specifically, two connecting plates (10) are provided, and both connecting plates (10) are slidably connected inside the connecting block (8).
5. The internal fixation device for hallux valgus correction surgery according to claim 3, characterized in that: A plurality of third threaded holes (20) are provided in the middle of the limiting plate (2), an adjusting screw (21) is threadedly connected to the middle of the third threaded hole (20), and the adjusting screw (21) is threadedly connected to the middle of the second threaded hole (19) through the third threaded hole (20).
6. The internal fixation device for hallux valgus correction surgery according to claim 1, characterized in that: Specifically, two connecting blocks (8) are provided, and one of the connecting blocks (8) is fixedly connected to one end of the limiting plate (2).
7. The internal fixation device for hallux valgus correction surgery according to claim 1, characterized in that: Specifically, two of the card blocks (9) are provided, and both of the two card blocks (9) are slidably connected to the interior of the connecting block (8).