Intramedullary nail for peroneal

Abstract

The utility model discloses a fibular intramedullary nail which comprises a main nail body, a lock hole is formed in the main nail body, a transverse lock nail assembly is assembled in the lock hole, the transverse lock nail assembly is composed of an end nail, a tail end nail and a middle column, an adjusting groove is formed in the end face of the tail end nail, one end of the middle column is arranged in the adjusting groove, and the other end of the middle column is connected with the end face of the tail end nail. The other end of the middle column is fixed on the end nail; the transverse locking nail assembly is composed of the end nail, the middle column and the tail end nail, the end nail is installed on the tail end nail in a sliding mode through the middle column, after the fibular intramedullary nail assembly is installed, the clamping column clamped in the clamping hole is pressed, the transverse locking nail assembly is unlocked, then the end nail is pulled, and after adjustment is completed, the transverse locking nail assembly is locked. The clamping columns are jacked up by the springs to be clamped in the clamping holes, so that the overall length of the transverse locking nail assembly is adjusted, and the situation that the post-operation effect is affected due to the fact that the nail body is too long is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of fibula intramedullary nails, and in particular relates to a fibula intramedullary nail. Background Art

[0002] Intramedullary nails are orthopedic internal fixation devices among medical devices. The structure has an intramedullary nail rod, a proximal locking screw hole is provided at the proximal end of the intramedullary nail rod, and a decompression plane is provided on the surface of the intramedullary nail rod. There are more than one long strip-shaped decompression planes on the surface of the intramedullary nail rod, and the decompression plane can extend from the proximal end of the intramedullary nail rod to the distal end of the intramedullary nail rod.

[0003] The existing fibula intramedullary nail consists of a main nail body and a transverse locking nail. The main nail is placed in the fibula and is locked and fixed by the transverse locking nail. However, there are the following defects:

[0004] (1) When the existing fibular intramedullary nail is used for surgical treatment, the main nail is placed at the surgical position and then fixed by a transverse locking nail. However, the total length of the transverse locking nail is too long, and its length easily affects the surgical effect after surgery. For this reason, we propose a fibular intramedullary nail. Utility Model Content

[0005] The utility model aims to provide a fibula intramedullary nail to solve the problem in the above background technology that when the fibula intramedullary nail is fixed with a transverse locking nail, the postoperative effect is easily affected by the excessive length of the locking nail.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fibula intramedullary nail, comprising a main nail body, a locking hole is provided on the main nail body, a transverse locking nail assembly is assembled inside the locking hole, the transverse locking nail assembly is composed of an end nail, a tail nail and an intermediate column, an adjustment groove is provided on the end face of the tail nail, one end of the intermediate column is placed inside the adjustment groove, the other end of the intermediate column is fixed on the end nail, a plurality of assembly grooves are provided on the surface of the intermediate column in a linear array, a clamping column is assembled inside the assembly groove, a clamping hole is provided on the side wall of the adjustment groove, a corresponding clamping column is connected inside the clamping hole through clamping, and a spring is provided at the end of the clamping column.

[0007] Preferably, a blocking hole is formed on the side wall of the clamping column, a blocking block is disposed inside the blocking hole, and the blocking block is fixed on the inner wall of the assembly groove.

[0008] Preferably, a plug is slidably connected inside the clamping hole.

[0009] Preferably, a limiting groove is provided on the side wall of the plug, a limiting block is arranged inside the limiting groove, and the limiting block is fixed on the inner wall of the clamping hole.

[0010] Preferably, the longitudinal sections of the end nail, the middle column and the tail nail are all circular structures, and the central axes of the end nail, the middle column and the tail nail coincide with each other.

[0011] Preferably, the longitudinal section of the clamping column is a circular structure, and the end surface of the clamping column is a hemispherical structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) Through the designed transverse locking nail assembly, the transverse locking nail assembly consists of an end nail, an intermediate column and a tail nail. The end nail is slidably installed on the tail nail through the intermediate column. After the fibular intramedullary nail assembly is installed, the clamping column stuck in the clamping hole is pressed to unlock the transverse locking nail assembly, and then the end nail is pulled. After the adjustment is completed, the clamping column is lifted up by the spring and clamped in the clamping hole to achieve the overall length adjustment of the transverse locking nail assembly to avoid the nail body being too long and affecting the postoperative effect. The clamping column is limited by the designed block and blocking hole to prevent the clamping column from falling off from the assembly groove. The clamping hole is blocked by the designed plug. The plug is limited by the designed limit groove and limit block to prevent the plug from falling off from the clamping hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A in the enlarged view;

[0016] Figure 3 This is a structural cross-sectional view of the transverse locking nail assembly of the utility model;

[0017] Figure 4 For this utility model Figure 3 A in the enlarged view;

[0018] Figure 5 It is a three-dimensional diagram of the middle column of the utility model;

[0019] In the figure: 1. main nail body; 2. transverse locking nail assembly; 3. middle column; 4. end nail; 5. clamping column; 6. assembly groove; 7. clamping hole; 8. plug; 9. tail nail; 10. adjustment groove; 11. limit groove; 12. limit block; 13. blocking hole; 14. block; 15. spring. DETAILED DESCRIPTION

[0020] 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.

[0021] Example

[0022] See also Figures 1 to 5 The utility model provides a technical solution: a fibula intramedullary nail, comprising a main nail body 1, a locking hole is opened on the main nail body 1, a transverse locking nail assembly 2 is assembled inside the locking hole, the transverse locking nail assembly 2 is composed of an end nail 4, a tail nail 9 and an intermediate column 3, an end surface of the tail nail 9 is opened with an adjustment groove 10, one end of the intermediate column 3 is placed inside the adjustment groove 10, and the other end of the intermediate column 3 is fixed on the end nail 4, a plurality of assembly grooves 6 are opened on the surface of the intermediate column 3 in a linear array, a clamping column 5 is assembled inside the assembly groove 6, a clamping hole 7 is opened on the side wall of the adjustment groove 10, the inside of the clamping hole 7 is connected with a corresponding clamping column 5 through clamping, and a spring 15 is arranged at the end of the clamping column 5. Through the designed transverse locking nail assembly 2, the transverse The locking nail assembly 2 is composed of an end nail 4, an intermediate column 3 and a tail nail 9. The end nail 4 is slidably installed on the tail nail 9 through the intermediate column 3. After the fibular intramedullary nail assembly is installed, the clamping column 5 stuck in the clamping hole 7 is pressed to unlock the transverse locking nail assembly 2, and then the end nail 4 is pulled. After the adjustment is completed, the clamping column 5 is lifted up by the spring 15 and stuck in the clamping hole 7 to achieve the overall length adjustment of the transverse locking nail assembly 2 to avoid the nail body being too long and affecting the postoperative effect. A blocking hole 13 is opened on the side wall of the clamping column 5, and a blocking block 14 is arranged inside the blocking hole 13. The designed blocking block 14 and blocking hole 13 are used to limit the clamping column 5 to prevent the clamping column 5 from falling off from the assembly groove 6. The blocking block 14 is fixed to the inner wall of the assembly groove 6.

[0023] In this embodiment, preferably, the inside of the clamping hole 7 is connected with a plug 8 through a sliding connection, and the clamping hole 7 is blocked by the designed plug 8. The side wall of the plug 8 is provided with a limiting groove 11, and the inner side of the limiting groove 11 is provided with a limiting block 12. The designed limiting groove 11 and the limiting block 12 are used to limit the plug 8 to prevent the plug 8 from falling off from the clamping hole 7. The limiting block 12 is fixed on the inner wall of the clamping hole 7. The longitudinal sections of the end nail 4, the middle column 3 and the tail nail 9 are all circular structures, and the central axes of the end nail 4, the middle column 3 and the tail nail 9 coincide with each other. The longitudinal section of the clamping column 5 is a circular structure, and the end face of the clamping column 5 is set to a hemispherical structure.

[0024] The working principle and use process of the utility model: after the transverse locking nail assembly 2 is assembled on the main nail body 1, in order to avoid the transverse nail body being too long and affecting the postoperative effect, the end nail 4 of the transverse locking nail assembly 2 is slidably installed on the tail nail 9 through the middle column 3. After the fibular intramedullary nail assembly is installed, the clamping column 5 stuck in the clamping hole 7 is pressed to unlock the transverse locking nail assembly 2, and then the end nail 4 is pulled. After the adjustment is completed, the clamping column 5 is lifted up by the spring 15 and stuck in the clamping hole 7 to achieve the overall length adjustment of the transverse locking nail assembly 2 to avoid the nail body being too long and affecting the postoperative effect.

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

Claims

1. A fibula intramedullary nail, comprising a main nail body (1), wherein a locking hole is provided on the main nail body (1), wherein: A transverse locking nail assembly (2) is assembled inside the lock hole, and the transverse locking nail assembly (2) is composed of an end nail (4), a tail nail (9) and an intermediate column (3). An adjustment groove (10) is provided on the end surface of the tail nail (9), one end of the intermediate column (3) is placed inside the adjustment groove (10), and the other end of the intermediate column (3) is fixed on the end nail (4). A plurality of assembly grooves (6) are provided on the surface of the intermediate column (3) in a linear array, and a clamping column (5) is assembled inside the assembly groove (6). A clamping hole (7) is provided on the side wall of the adjustment groove (10), and a corresponding clamping column (5) is connected inside the clamping hole (7) through clamping, and a spring (15) is provided at the end of the clamping column (5).

2. A fibula intramedullary nail according to claim 1, characterized in that: A blocking hole (13) is formed on the side wall of the clamping column (5), a blocking block (14) is provided inside the blocking hole (13), and the blocking block (14) is fixed on the inner wall of the assembly groove (6).

3. The fibula intramedullary nail according to claim 1, characterized in that: The inside of the clamping hole (7) is connected with a plug (8) by sliding.

4. A fibula intramedullary nail according to claim 3, characterized in that: A limiting groove (11) is provided on the side wall of the plug (8), a limiting block (12) is arranged inside the limiting groove (11), and the limiting block (12) is fixed on the inner wall of the clamping hole (7).

5. The fibula intramedullary nail according to claim 1, characterized in that: The longitudinal sections of the end nail (4), the middle column (3) and the tail nail (9) are all circular structures, and the central axes of the end nail (4), the middle column (3) and the tail nail (9) coincide with each other.

6. The fibula intramedullary nail according to claim 1, characterized in that: The longitudinal section of the clamping column (5) is a circular structure, and the end surface of the clamping column (5) is arranged as a hemispherical structure.

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