Intramedullary nail taking-out device

Abstract

The utility model discloses an intramedullary nail taking-out device, and particularly relates to the technical field of intramedullary nail taking-out. The intramedullary nail taking-out device comprises a supporting frame, and two rubber plates are movably arranged at the lower end of the supporting frame; two supporting and extending devices are arranged in the two sides of the supporting frame respectively and used for extending the supporting height; the supporting extension device comprises a storage groove, the storage groove is formed in the supporting frame, and an extension column is movably arranged in the storage groove; an angle adjusting device hinged to the rubber plate is arranged at the lower end of the supporting frame and used for enabling the rubber plate to adjust the rotating angle according to the angle of the intramedullary nail of the patient. According to the intramedullary nail extractor, the supporting and extending device and the angle adjusting device are arranged, so that the intramedullary nail can be extracted from the body of a patient, the extraction of the intramedullary nail is realized, the practicability of the intramedullary nail extractor is integrally improved, and the intramedullary nails with different lengths and different angles can be extracted.

Description

Technical Field

[0001] This utility model relates to the field of intramedullary nail removal technology, and more specifically, to an intramedullary nail removal device. Background Technology

[0002] Intramedullary nails are primarily used for the fixation of fractures in long tubular bones of the limbs, such as fractures of the humerus, femur, ulna, and tibia. Because these are long tubular bones, using plates for fixation results in eccentric fixation, which is prone to screw loosening, breakage, and plate breakage. Intramedullary nails provide central fixation, offering more reliable fixation and stronger bone support, especially in the femur. With intramedullary nails, early functional exercises of the thigh, joint, and muscles can be initiated. Secondly, intramedullary nails also provide connection and support for the limb. After the patient's limb has recovered, the intramedullary nail needs to be removed, requiring a removal device.

[0003] A search revealed, for example, a Chinese patent application with publication number CN214857340U, which discloses an intramedullary nail removal device. This device features a simple structure with a rubber protective pad and a tightening band, allowing for easy fixation and improved stability during operation. This facilitates single-person operation by medical staff, reducing the workload. Furthermore, the inclusion of a lifting screw and a nail-holding block makes nail removal convenient, reducing the difficulty of the procedure, minimizing the use of instruments, and making the removal process faster and less strenuous, thus reducing patient discomfort and improving work efficiency.

[0004] However, when using the above-mentioned method, the removal device is fixed to the outer surface of the patient's limb by using a tightening band. The size of the rubber protective pad in the above-mentioned method is fixed. When the patient uses a long intramedullary nail, the above-mentioned method is more troublesome to operate. In addition, the intramedullary nail inside the patient's limb is not inserted straight. Some intramedullary nails are inserted into the bone marrow at an angle, and the above-mentioned method is difficult to remove at an angle. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an intramedullary nail removal device. The technical problem to be solved is that it is difficult to remove long intramedullary nails and oblique intramedullary nails using a fixed-size rubber protective pad.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intramedullary nail removal device, comprising a support frame:

[0007] Two rubber plates are movably provided at the lower end of the support frame;

[0008] The support frame is equipped with two support extension devices on each side for extending the support height.

[0009] The support extension device includes a storage slot, which is opened inside the support frame, and an extension column is movably provided inside the storage slot;

[0010] The lower end of the support frame is provided with an angle adjustment device that is hinged to the rubber plate, which is used to adjust the rotation angle of the rubber plate according to the angle of the patient's intramedullary nail.

[0011] In a preferred embodiment, a limiting block is fixedly provided at the upper end of the extension column, and the limiting block is adapted to the storage groove.

[0012] In a preferred embodiment, a second threaded post is inserted inside the support frame, a limiting groove is formed inside the support frame, and a rotating block is fixed on the outer surface of the second threaded post. The rotating block is located inside the limiting groove and is adapted to the limiting groove.

[0013] In a preferred embodiment, the extension post has a threaded groove inside, the second threaded post is threadedly connected to the threaded groove, and a turntable is fixedly provided at the upper end of the second threaded post.

[0014] In a preferred embodiment, the angle adjustment device includes a hinge seat, which is fixedly disposed at the lower end of the extension column, and a hinge block is hinged inside the hinge seat.

[0015] In a preferred embodiment, the upper end of the rubber plate is fixedly connected to the lower end of the hinge block, and an anti-slip pad is fixedly provided at the lower end of the rubber plate.

[0016] In a preferred embodiment, a threaded sleeve runs through the inside of the support frame, and a first threaded post is threadedly connected inside the threaded sleeve. A limiting plate is fixedly provided at the upper end of the first threaded post, and a rotating handle is fixedly provided at the upper end of the limiting plate. A locking block is movably provided at the lower end of the first threaded post, and the protrusion at the upper end of the locking block is adapted to the groove at the lower end of the first threaded post.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. This utility model, through the storage groove and extension column, can adjust the support height of the support frame according to the length of the intramedullary nail inside the patient's limb. When it is necessary to adjust the height of the support frame, the rotation of the turntable, with the cooperation of the limiting groove and the rotating block, can drive the second threaded column to rotate in the threaded groove, thus driving the extension column to move in the storage groove, thereby realizing the adjustment of the support height.

[0019] 2. This utility model uses a hinge seat and a hinge block, so the rubber plate can be rotated according to the angle of the intramedullary nail in the patient's limb. The extension column is extended by the support extension device, and the rotated rubber plate and anti-slip pad are supported on the surface of the patient's limb, so that the support frame can be installed obliquely on the surface of the patient's limb. When the nail block is fixed with the intramedullary nail, the oblique intramedullary nail can be removed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a side sectional view of the present invention.

[0022] Figure 3 This is a schematic diagram of the support extension device of this utility model.

[0023] Figure 4 This is a schematic diagram of the angle adjustment device of this utility model.

[0024] The attached figures are labeled as follows: 1. Support frame; 2. Support extension device; 3. Angle adjustment device; 4. Clip block; 5. Limiting plate; 6. First threaded post; 7. Threaded sleeve; 8. Rotating handle; 9. Rubber plate; 21. Storage groove; 22. Extension post; 23. Limiting block; 24. Second threaded post; 25. Rotating block; 26. Limiting groove; 27. Turntable; 28. Threaded groove; 31. Hinge seat; 32. Hinge block; 33. Anti-slip pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art of intramedullary nail removal without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 and 2 As shown, this utility model provides an intramedullary nail removal device, including a support frame 1: two rubber plates 9 are movably provided at the lower end of the support frame 1, a threaded sleeve 7 passes through the inside of the support frame 1, a first threaded post 6 is threadedly connected inside the threaded sleeve 7, a limiting plate 5 is fixedly provided at the upper end of the first threaded post 6, a rotating handle 8 is fixedly provided at the upper end of the limiting plate 5, and a locking block 4 is movably provided at the lower end of the first threaded post 6, with the upper protrusion of the locking block 4 matching the lower groove of the first threaded post 6.

[0027] In order to adjust the support height of the support frame 1 and remove intramedullary nails of different lengths, two support extension devices 2 are provided on the inside of both sides of the support frame 1 to extend the support height.

[0028] like Figure 3 As shown, the support extension device 2 includes a storage slot 21, which is located inside the support frame 1. An extension column 22 is movably disposed inside the storage slot 21. A limiting block 23 is fixedly disposed at the upper end of the extension column 22, and the limiting block 23 is adapted to the storage slot 21. A second threaded column 24 is inserted inside the support frame 1, and a limiting groove 26 is provided inside the support frame 1. A rotating block 25 is fixedly disposed on the outer surface of the second threaded column 24, and the rotating block 25 is located inside the limiting groove 26, adapting to the limiting groove 26. A threaded groove is provided inside the extension column 22. 28. The second threaded post 24 is threadedly connected to the threaded groove 28. A turntable 27 is fixedly provided at the upper end of the second threaded post 24. Through the receiving groove 21 and the extension post 22, the support height of the support frame 1 can be adjusted according to the length of the intramedullary nail inside the patient's limb. When it is necessary to adjust the height of the support frame 1, the rotation of the turntable 27, with the cooperation of the limiting groove 26 and the rotating block 25, can drive the second threaded post 24 to rotate in the threaded groove 28, thus driving the extension post 22 to move in the receiving groove 21, thereby realizing the adjustment of the support height.

[0029] Furthermore, in order to remove the oblique intramedullary nail, the lower end of the support frame 1 is provided with an angle adjustment device 3 that is hinged to the rubber plate 9, so that the rubber plate 9 can adjust the rotation angle according to the angle of the patient's intramedullary nail.

[0030] like Figure 4 As shown, the angle adjustment device 3 includes a hinge seat 31, which is fixedly installed at the lower end of the extension column 22. A hinge block 32 is hinged inside the hinge seat 31. The upper end of the rubber plate 9 is fixedly connected to the lower end of the hinge block 32. An anti-slip pad 33 is fixedly provided at the lower end of the rubber plate 9. Through the hinge seat 31 and the hinge block 32, the rubber plate 9 can be rotated according to the angle of the intramedullary nail in the patient's limb. The extension column 22 is extended through the support extension device 2, and the rotated rubber plate 9 and the anti-slip pad 33 are supported on the surface of the patient's limb. Thus, the support frame 1 can be installed obliquely on the surface of the patient's limb. When the nail block 4 is fixed with the intramedullary nail, the oblique intramedullary nail can be removed.

[0031] The working principle is as follows: When using this utility model, the height of the utility model is adjusted according to the length of the intramedullary nail inside the patient's limb using the support extension device 2. Then, the support extension device 2 and the angle adjustment device 3 can make the utility model be placed obliquely on the surface of the patient's limb. When the nail block 4 is fixed to one end of the intramedullary nail, the rotating handle 8 is turned. With the cooperation of the threaded sleeve 7 and the first threaded post 6, the intramedullary nail can be pulled out of the patient's body. Thus, the removal of the intramedullary nail is realized, which improves the overall practicality of this utility model. It can remove intramedullary nails of different lengths and at different angles.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An intramedullary nail removal device, comprising a support frame (1), characterized in that: The lower end of the support frame (1) is movably provided with two rubber plates (9); The support frame (1) has two support extension devices (2) on each side, which are used to extend the support height; The support extension device (2) includes a storage slot (21), which is opened inside the support frame (1), and an extension column (22) is movably provided inside the storage slot (21); The lower end of the support frame (1) is provided with an angle adjustment device (3) that is hinged to the rubber plate (9) to enable the rubber plate (9) to adjust the rotation angle according to the angle of the patient's intramedullary nail.

2. The intramedullary nail removal device according to claim 1, characterized in that: The upper end of the extension column (22) is fixedly provided with a limiting block (23), which is adapted to the storage groove (21).

3. The intramedullary nail removal device according to claim 1, characterized in that: The support frame (1) has a second threaded post (24) inserted inside. The support frame (1) has a limiting groove (26) inside. The outer surface of the second threaded post (24) is fixed with a rotating block (25). The rotating block (25) is located inside the limiting groove (26). The rotating block (25) is adapted to the limiting groove (26).

4. The intramedullary nail removal device according to claim 3, characterized in that: The extension column (22) has a threaded groove (28) inside, the second threaded column (24) is threadedly connected to the threaded groove (28), and a turntable (27) is fixedly provided at the upper end of the second threaded column (24).

5. The intramedullary nail removal device according to claim 1, characterized in that: The angle adjustment device (3) includes a hinge seat (31), which is fixedly installed at the lower end of the extension column (22), and a hinge block (32) is hinged inside the hinge seat (31).

6. The intramedullary nail removal device according to claim 5, characterized in that: The upper end of the rubber plate (9) is fixedly connected to the lower end of the hinge block (32), and the lower end of the rubber plate (9) is fixedly provided with an anti-slip pad (33).

7. The intramedullary nail removal device according to claim 1, characterized in that: The support frame (1) has a threaded sleeve (7) inside, and a first threaded post (6) is threaded inside the threaded sleeve (7). A limiting plate (5) is fixedly provided at the upper end of the first threaded post (6), and a rotating handle (8) is fixedly provided at the upper end of the limiting plate (5). A locking block (4) is movably provided at the lower end of the first threaded post (6), and the protrusion at the upper end of the locking block (4) is adapted to the groove at the lower end of the first threaded post (6).

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