3D printing patella fracture guide plate

Abstract

The utility model relates to the technical field of medical instruments, and discloses a 3D printing patella fracture guide plate which comprises a fixing guide plate and a limiting assembly, a clamping plate is arranged on the outer side of the fixing guide plate, a threaded hole is formed in the outer side of the clamping plate, and a connecting assembly is arranged on one side of the clamping plate through the formed threaded hole. The fixing guide plate can be placed on the surface of the patella of a patient through the clamping plate, the fixing guide plate and the clamping plate can tightly support and position the patella of the patient through 3D printing, a kirschner wire can be conveniently and accurately driven into the patella of the patient through a fixing hole in a fixing cylinder, and a steel wire is inserted into a limiting hole in a limiting column; a hollow threaded column of a connecting assembly can be fixedly connected with an adjusting assembly, and then a threaded connecting column is connected with a threaded hole of a fixing guide plate, so that one side of the fixing guide plate is connected with a limiting assembly at one end of the adjusting assembly, and the limiting assembly limits the opened skin and flesh part; and the circular patient operation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a 3D printed patellar fracture guide plate. Background Art

[0002] The patella is a small bone in front of the knee. Because the front of the knee joint is the first to touch the ground when falling, it is likely to be injured and fractured. Of course, most patellar fractures are indirect quadriceps traction fractures, so two horizontal fracture fragments can be seen on X-rays. It is necessary to use steel needles, steel cables, wires, and various methods to tie the bones together to form a whole, maintain it for a period of time, and wait until the fracture is completely healed before removing it or not.

[0003] The patellar fracture internal fixation device disclosed in the Chinese utility model patent application disclosure CN210903300U has a simple structure. When fixing the fractured patella, it is only necessary to use the hook to hook the fracture fragment on one side of the patellar fracture line, and then use the connecting piece to fix the fixing piece on the fracture fragment on the other side of the patellar fracture line. It is easy to operate, but it is difficult to accurately and quickly introduce the positioning pin during use, thereby prolonging the patient's treatment time, and it is difficult to fix the patient's flesh and blood turned over during the operation, which is easy to affect the patient's treatment. The insertion of the Kirschner wire requires the patient to operate through experience, which makes the operation difficult and easily causes the Kirschner wire to deviate and cause it to cross conflict. Therefore, a 3D printed patellar fracture guide is proposed to solve this problem. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a 3D printed patellar fracture guide, which solves the problems that it is difficult to accurately and quickly introduce the positioning pin during use, thereby prolonging the patient's treatment time, and it is difficult to fix the patient's flesh and blood turned over during the operation, which can easily affect the patient's treatment. The insertion of the Kirschner wire requires the patient to rely on experience to operate, resulting in difficulty in operation, and can easily cause the Kirschner wire to deviate and cause cross-conflict.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions: comprising a fixed guide plate and a limit assembly, a clamping plate is provided on the outer side of the fixed guide plate, a threaded hole is opened on the outer side of the clamping plate, a connecting assembly is provided on one side of the clamping plate through the threaded hole, an adjusting assembly is provided at one end of the connecting assembly, and a limit assembly is provided at one end of the adjusting assembly;

[0008] The limit assembly includes a limit plate, a spring B, an extension plate, a block and a slot. The inside of the limit plate is provided with a spring B through a groove. One end of the spring B is provided with an extension plate. There are two extension plates, one end of which is provided with a block, and one end of the other extension plate is provided with a slot.

[0009] Optionally, the number of the limiting components is three, and the three limiting components form a circle, wherein the extension plate of one of the limiting components is connected to a slot at one end of the extension plate of another limiting component through a clamping block.

[0010] Optionally, a guide groove is provided on one side of the limiting plate, and the other end of the extension plate is connected to the inner top of the limiting plate through a provided partition.

[0011] Optionally, the connecting assembly includes a hollow threaded column and a threaded connecting column, a threaded connecting column is provided on one side of the hollow threaded column, one side of the fixed guide plate is connected to the threaded connecting column through a threaded hole, the interior of the hollow threaded column is connected to the adjustment assembly through a thread, and the internal thread of the hollow threaded column is opposite to the thread direction of the threaded connecting column.

[0012] Optionally, the adjustment assembly includes a telescopic rod, a threaded groove, a connecting rod, a spring A and a fixing bolt. A threaded groove is provided on the outside of the telescopic rod, a spring A is provided at one end of the telescopic rod, a connecting rod is sleeved on the outside of the spring A, the connecting rod and the telescopic rod are connected by a fixing bolt, one end of the connecting rod is connected to the connecting assembly by a thread, and one end of the telescopic rod is connected to the limit assembly.

[0013] Optionally, a connecting plate is provided on one side of the fixed guide plate, limiting columns are provided on both sides of the connecting plate, limiting holes are opened inside the limiting columns, a fixing tube is provided on one side of the fixed guide plate through a groove, and a fixing hole is opened inside the fixing tube.

[0014] Optionally, the number of the limiting columns is two, a steel wire is provided inside the limiting hole, the number of the fixing cylinders is four, and a Kirschner wire is provided inside the fixing hole.

[0015] In summary, the technical effects and advantages of the utility model are:

[0016] 1. The utility model has a reasonable structure. It is composed of an adjustment component and a limit component. The fixed guide plate can be placed on the surface of the patient's patella through a clamping plate. The fixed guide plate and the clamping plate can be used to tightly support and position the patient's patella through three-dimensional printing, so that the Kirschner wire can be accurately inserted into the patient's patella through the fixing hole on the fixing tube. The steel wire is inserted into the limiting hole on the limiting column, which is convenient for medical staff to fix it. The hollow threaded column of the connecting component can be fixedly connected with the adjusting component, and then connected with the threaded hole of the fixed guide plate through the threaded connecting column, so that one side of the fixed guide plate is connected to the limiting component at one end of the adjusting component, so that the limiting component limits the turned-over skin and flesh part to prevent the patient from undergoing surgery.

[0017] 2. In the utility model, the connecting rod of the adjusting component can be connected to the connecting component, and the spring A can facilitate the movement of the telescopic rod inside the connecting rod, so as to adjust the limit range of the limit assembly, and the connecting rod and the telescopic rod can be fixed by the threaded groove and the fixing bolt to prevent them from being offset when the skin and flesh are turned over at the patient's patella for limit fixation, thereby affecting the medical staff in performing surgery.

[0018] 3. In the utility model, the limit plate of the limit assembly can be used to limit and fix the turned-up skin and flesh at the patient's patella, the blood and precipitate of the turned-up skin and flesh can be refluxed through the guide groove on one side of the limit plate, and the extension plate can be made to slide on the inner side of the limit plate by the spring B, so as to adjust the range of the turned-up skin and flesh of the patient, which is convenient for medical staff to perform surgery on the patient's patella, and the three limit plates on the outer side of the fixed guide plate can be connected into a circle through the clamping block and the clamping groove, so as to facilitate medical staff to perform treatment on the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the 3D printed patellar fracture guide plate of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the limit assembly of the utility model;

[0021] Figure 3 This is a schematic diagram of the planar structure of the limit assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the fixed guide plate structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the connection component of the utility model.

[0024] In the figure: 1. fixed guide plate; 2. clamping plate; 3. threaded hole; 4. connecting assembly; 5. adjusting assembly; 6. limiting assembly; 7. connecting plate; 8. limiting column; 9. fixing cylinder; 10. fixing hole; 11. limiting hole; 401. hollow threaded column; 402. threaded connecting column; 501. telescopic rod; 502. threaded groove; 503. connecting rod; 504. spring A; 505. fixing bolt; 601. limiting plate; 602. spring B; 603. extension plate; 604. clamping block; 605. clamping groove. DETAILED DESCRIPTION

[0025] 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.

[0026] Example: Reference Figure 1-Figure 5 A 3D printed patella fracture guide plate shown in the figure comprises a fixed guide plate 1 and a limit assembly 6, a clamping plate 2 is provided on the outer side of the fixed guide plate 1, a threaded hole 3 is provided on the outer side of the clamping plate 2, a connecting assembly 4 is provided on one side of the clamping plate 2 through the threaded hole 3, an adjusting assembly 5 is provided at one end of the connecting assembly 4, and a limit assembly 6 is provided at one end of the adjusting assembly 5;

[0027] The limiting assembly 6 includes a limiting plate 601, a spring B602, an extension plate 603, a block 604 and a slot 605. A spring B602 is provided inside the limiting plate 601 through a groove. An extension plate 603 is provided at one end of the spring B602. There are two extension plates 603, one end of one extension plate 603 is provided with a block 604, and one end of the other extension plate 603 is provided with a slot 605.

[0028] As a preferred implementation in this embodiment, Figure 2 and Figure 3 As shown, there are three limit assemblies 6, and the three limit assemblies 6 form a circle, wherein an extension plate 603 of one limit assemblies 6 is connected to a slot 605 at one end of an extension plate 603 of another limit assemblies 6 through a block 604, a guide groove is provided on one side of the limit plate 601, and the other end of the extension plate 603 is connected to the inner top of the limit plate 601 through a partition plate, and the skin and flesh turned over at the patella of the patient are limited and fixed by the limit plate 601, and the blood and precipitate of the turned over skin and flesh are refluxed through the guide groove on one side of the limit plate 601, and the extension plate 603 is made to slide on the inner side of the limit plate 601 by the spring B602, and the three limit plates 601 on the outer side of the fixed guide plate 1 are connected into a circle through the block 604 and the slot 605.

[0029] like Figure 2 and Figure 5 As shown, in this embodiment, the connecting component 4 includes a hollow threaded column 401 and a threaded connecting column 402. The threaded connecting column 402 is provided on one side of the hollow threaded column 401. One side of the fixed guide plate 1 is connected to the threaded connecting column 402 through the threaded hole 3. The interior of the hollow threaded column 401 is connected to the adjusting component 5 through a thread. The internal thread of the hollow threaded column 401 is opposite to the thread direction of the threaded connecting column 402. The hollow threaded column 401 is fixedly connected to the adjusting component 5 through the hollow threaded column 401, and then connected to the threaded hole 3 of the fixed guide plate 1 through the threaded connecting column 402, so that one side of the fixed guide plate 1 is connected to the limiting component 6 at one end of the adjusting component 5.

[0030] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the adjustment component 5 includes a telescopic rod 501, a threaded groove 502, a connecting rod 503, a spring A504 and a fixing bolt 505. The outer side of the telescopic rod 501 is provided with a threaded groove 502, and one end of the telescopic rod 501 is provided with a spring A504. The outer side of the spring A504 is sleeved with a connecting rod 503. The connecting rod 503 and the telescopic rod 501 are connected by a fixing bolt 505. One end of the connecting rod 503 is connected to the connecting component 4 by a thread. One end of the telescopic rod 501 is connected to the limit component 6, and it is connected to the connecting component 4 by the connecting rod 503. The spring A504 facilitates the movement of the telescopic rod 501 inside the connecting rod 503, thereby adjusting the limit range of the limit component 6. The connecting rod 503 and the telescopic rod 501 are fixed by the threaded groove 502 and the fixing bolt 505.

[0031] like Figure 1 and Figure 4 As shown, in the present embodiment, a connecting plate 7 is provided on one side of the fixed guide plate 1, and limiting columns 8 are provided on both sides of the connecting plate 7. A limiting hole 11 is provided inside the limiting column 8. A fixing cylinder 9 is provided on one side of the fixed guide plate 1 through the provided groove. A fixing hole 10 is provided inside the fixing cylinder 9. There are two limiting columns 8, and a steel wire is provided inside the limiting hole 11. There are four fixing cylinders 9, and a Kirschner wire is provided inside the fixing hole 10. The steel wire is inserted through the limiting hole 11 on the limiting column 8, and it is convenient for medical staff to insert the positioning pin through the fixing hole 10 of the fixing cylinder 9.

[0032] How this utility works:

[0033] The fixed guide plate 1 is composed of an adjustment component 5 and a limiting component 6. The fixed guide plate 1 is placed on the surface of the patient's patella through the clamping plate 2. The fixed guide plate 1 and the clamping plate 2 are used to tightly support and position the patient's patella through 3D printing. A steel wire is inserted into the limiting hole 11 on the limiting column 8, and the hollow threaded column 401 of the connecting component 4 is fixedly connected to the adjustment component 5, and then connected to the threaded hole 3 of the fixed guide plate 1 through the threaded connecting column 402, so that one side of the fixed guide plate 1 is connected to the limiting component 6 at one end of the adjustment component 5, so that the limiting component 6 limits the turned-over skin and flesh part, and is connected to the connecting component 4 through the connecting rod 503 of the adjustment component 5. The spring A504 facilitates the telescopic rod 501 to move inside the connecting rod 503, thereby adjusting the limiting range of the limiting assembly 6, and the connecting rod 503 and the telescopic rod 501 are fixed by the threaded groove 502 and the fixing bolt 505. The skin and flesh at the patella of the patient are limited and fixed by the limiting plate 601 of the limiting assembly 6, and the blood and precipitate of the turned skin and flesh are refluxed by the guide groove on one side of the limiting plate 601. The extension plate 603 is made to slide on the inner side of the limiting plate 601 by the spring B602, and the three limiting plates 601 on the outer side of the fixed guide plate 1 are connected into a circle by the clamping block 604 and the clamping groove 605.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 utility model shall be included in the protection scope of the present utility model.

Claims

1. A 3D printed patellar fracture guide plate, comprising a fixed guide plate (1) and a limiter assembly (6), characterized in that: A clamping plate (2) is provided on the outer side of the fixed guide plate (1), a threaded hole (3) is provided on the outer side of the clamping plate (2), a connecting component (4) is provided on one side of the clamping plate (2) through the threaded hole (3), an adjusting component (5) is provided at one end of the connecting component (4), and a limiting component (6) is provided at one end of the adjusting component (5); The limiting assembly (6) comprises a limiting plate (601), a spring B (602), an extension plate (603), a clamping block (604) and a clamping slot (605); a spring B (602) is provided inside the limiting plate (601) via a groove; an extension plate (603) is provided at one end of the spring B (602); there are two extension plates (603), one end of one of the extension plates (603) is provided with a clamping block (604), and one end of the other of the extension plates (603) is provided with a clamping slot (605).

2. A 3D printed patella fracture guide according to claim 1, characterized in that: The number of the limiting components (6) is three, and the three limiting components (6) form a circle, wherein the extension plate (603) of one of the limiting components (6) is connected to the card slot (605) at one end of the extension plate (603) of another limiting component (6) through a card block (604).

3. A 3D printed patella fracture guide according to claim 1, characterized in that: A guide groove is provided on one side of the limiting plate (601), and the other end of the extension plate (603) is connected to the inner top of the limiting plate (601) via a partition plate.

4. A 3D printed patella fracture guide according to claim 1, characterized in that: The connection assembly (4) comprises a hollow threaded column (401) and a threaded connection column (402); one side of the hollow threaded column (401) is provided with a threaded connection column (402); one side of the fixed guide plate (1) is connected to the threaded connection column (402) via a threaded hole (3); the internal thread of the hollow threaded column (401) is connected to an adjustment assembly (5); and the internal thread of the hollow threaded column (401) is in opposite direction to the thread of the threaded connection column (402).

5. The 3D printed patella fracture guide according to claim 1, characterized in that: The adjustment assembly (5) comprises a telescopic rod (501), a threaded groove (502), a connecting rod (503), a spring A (504) and a fixing bolt (505); the outer side of the telescopic rod (501) is provided with a threaded groove (502); one end of the telescopic rod (501) is provided with a spring A (504); the outer side of the spring A (504) is sleeved with a connecting rod (503); the connecting rod (503) and the telescopic rod (501) are connected via a fixing bolt (505); one end of the connecting rod (503) is connected to the connecting assembly (4) via a thread; and one end of the telescopic rod (501) is connected to a limit assembly (6).

6. A 3D printed patella fracture guide according to claim 1, characterized in that: A connecting plate (7) is provided on one side of the fixed guide plate (1), and limiting columns (8) are provided on both sides of the connecting plate (7), and limiting holes (11) are provided inside the limiting columns (8). A fixing cylinder (9) is provided on one side of the fixed guide plate (1) through a groove, and a fixing hole (10) is provided inside the fixing cylinder (9).

7. A 3D printed patella fracture guide according to claim 6, characterized in that: The number of the limiting columns (8) is two, a steel wire is provided inside the limiting hole (11), the number of the fixing cylinders (9) is four, and a Kirschner wire is provided inside the fixing hole (10).

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