A bone fracture fixation bracket nail and bracket thereof

Abstract

The application relates to a broken bone fixing support nail and a fixing support, and relates to the technical field of bone fixation. A first nail body is provided with a first hemisphere at the upper end, an external connecting cap is installed on the first hemisphere, and a side cap is installed on the side surface of the external connecting cap. The external connecting cap and the side cap are used for installing a support rod. First locking bolts are installed in the external connecting cap and the side cap, the first locking bolts are used for locking the support rod, a first pressing part is installed in the external connecting cap, and the first pressing part is used for increasing friction and the connection stability of the external connecting cap and the first hemisphere. The application has the effects of enhancing the stability of the broken bone fixing support and reducing the space occupied by the broken bone fixing support.

Description

Technical Field

[0001] This application relates to the field of bone fixation technology, and in particular to a fracture fixation bracket nail. Background Technology

[0002] In orthopedic surgery, fractures are typically treated with external fixation devices to maintain a relatively fixed shape of the broken bone, ensuring proper bone alignment and promoting healthy healing. Existing fixation systems typically consist of an external fixator and matching metal bone screws. Multiple sets of bone screws are connected to the fracture site on the tibia, with the screws extending beyond the skin and connected to a fixation bracket. This bracket supports the bone, protecting the fracture site and preventing further injury during movement. Current fracture fixation devices consist of a screw body and a screw cap. A support rod is mounted on the cap, and multiple screw bodies are connected to form a support frame to fix the fracture. The screw body and cap must not have any angular misalignment; therefore, the fixation device requires considerable space after installation. Summary of the Invention

[0003] The purpose of this application is to provide a fracture fixation bracket nail to solve the technical problem that "there should be no angular offset between the nail body and the top cap, and a large space is required after the fixation bracket is installed".

[0004] The bone fracture fixation bracket provided in this application adopts the following technical solution: A bone fracture fixation bracket includes a first bracket body, a first hemisphere is fixed to the upper end of the first bracket body, an outer cap is installed on the first hemisphere, and a lateral cap is installed on the side of the outer cap; the outer cap and the lateral cap are used to install a support rod, a first locking bolt is installed inside the outer cap and the lateral cap, the first locking bolt is used to lock the support rod, and a first clamping member is installed inside the outer cap, the first clamping member is used to increase friction and increase the connection stability between the outer cap and the first hemisphere.

[0005] Optionally, a side connecting rod is installed on the side of the outer cap, and a second hemisphere is installed on the end of the side connecting rod away from the outer cap. The side cap is installed on the second hemisphere, and a second clamping member is installed inside the side cap. The second clamping member is used to increase the connection stability between the side cap and the second hemisphere.

[0006] Optionally, a first spherical gripper is provided between the first clamping member and the first hemisphere; and a second spherical gripper is provided between the second clamping member and the second hemisphere.

[0007] Optionally, the outer cap and the side cap are U-shaped, and the side cap is fixed to the side of the outer cap.

[0008] Optionally, a side-mounted connecting rod is installed on the side of the external cap, the side cap is rotatably mounted on the side-mounted connecting rod, a limit groove is provided on the side-mounted connecting rod, a pressing and limiting component is installed inside the side cap, and an arc-shaped clamping plate is installed on the lower side of the pressing and limiting component and snapped onto the side-mounted connecting rod.

[0009] Optionally, a first break groove is provided on the outer cap.

[0010] A fracture fixation bracket includes a pair of fracture fixation bracket nails, and a pair of support rods are installed on the outer cap and the lateral cap, with a single-headed bracket nail installed on the support rod.

[0011] Optionally, the single-headed support nail includes a second nail body, a third hemisphere is fixed to the upper end of the second nail body, a single-headed cap is installed on the third hemisphere, and a second locking bolt is installed inside the single-headed cap. The second locking bolt is used to lock the support rod to the single-headed cap; an angle structure is formed between the first nail body and the second nail body.

[0012] Optionally, a third clamping element is installed inside the single-headed cap; a third spherical clamping claw is provided between the third clamping element and the third hemisphere; external threads are provided on the first nail body and the second nail body.

[0013] Optionally, the single-head cap has a U-shaped structure, and a second break groove is provided on the single-head cap.

[0014] Optionally, a support rod limiting member is installed inside the single-head cap, and a support rod locking member is installed on the second locking bolt. The support rod locking member is threadedly connected to the second locking bolt. The support rod locking member is used to lock the support rod onto the support rod limiting member, and the support rod limiting member generates a pressing force on the third hemisphere 82.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. The first hemisphere above the first nail body is installed inside the outer cap. The angle of the first nail body can be adjusted relative to the outer cap. Then, two support rods are installed on the outer cap and the lateral cap respectively and locked with the first locking bolt. An angle can be formed between the first nail bodies to enhance the stability of the fracture fixation bracket.

[0017] 2. The first support rod is installed on the outer cap of the fracture fixation bracket nail and locked by the first locking bolt. The second support rod is installed on the lateral cap. The two support rods form a parallel structure. The single-headed bracket nail is installed on the bone and connected to the second support rod. The two first nail bodies and the single-headed bracket nail are not on the same straight line. The principle of three points determining one plane is used to enhance the stability of bone fixation after the fracture fixation bracket is installed.

[0018] 3. The first nail body can be angled relative to the outer cap, so that the first nail body can form an angle with the single-headed support nail. The stability of the triangular structure enhances the stability of bone fixation.

[0019] 4. The lateral cap is installed on one side of the external cap, which reduces the distance between the external cap and the lateral cap, thereby reducing the distance between the support rods and thus reducing the space occupied by the fracture fixation frame. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the fracture fixation bracket nail according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the fracture fixation bracket nail according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the second embodiment of the fracture fixation bracket nail in this application.

[0023] Figure 4 This is an exploded structural diagram of the second embodiment of the fracture fixation bracket nail in this application.

[0024] Figure 5 This is a schematic diagram of the third embodiment of the fracture fixation bracket nail in this application;

[0025] Figure 6 This is an exploded structural diagram of the third embodiment of the fracture fixation bracket nail in this application.

[0026] Figure 7 This is a schematic diagram of the overall structure of the fracture fixation bracket according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the fracture fixation bracket structure according to an embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the single-head bracket nail structure according to an embodiment of this application;

[0029] Figure 10 This is a schematic diagram of the second structure of the single-head bracket nail according to an embodiment of this application;

[0030] Figure 11 This is a schematic diagram showing the second structure of the single-head bracket nail in an embodiment of this application.

[0031] In the diagram, 1. First nail body; 2. First hemisphere; 3. External cap; 31. Side connecting rod; 32. Second hemisphere; 33. First break groove; 34. Side connecting rod; 35. Limiting groove; 4. Side cap; 41. Pressing and limiting component; 42. Arc-shaped clamping plate; 5. First locking bolt; 6. First pressing component; 61. First spherical clamp; 7. Second pressing component; 71. Second spherical clamp; 8. Single-headed bracket nail; 81. Second nail body; 82. Third hemisphere; 83. Single-headed cap; 84. Second locking bolt; 85. Third pressing component; 86. Third spherical clamp; 87. Second break groove. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 - Appendix Figure 11 This application will be described in further detail below.

[0033] Reference Figure 1 , Figure 2 A fracture fixation nail includes a first nail body 1, a first hemisphere 2 fixed to the upper end of the first nail body 1, an outer cap 3 installed on the first hemisphere 2, and a lateral cap 4 installed on the side of the outer cap 3; the outer cap 3 and the lateral cap 4 are used to install a support rod, a first locking bolt 5 is installed inside the outer cap 3 and the lateral cap 4, the first locking bolt 5 is used to lock the support rod, and a first clamping member 6 is installed inside the outer cap 3, the first clamping member 6 is used to increase friction and increase the connection stability between the outer cap 3 and the first hemisphere 2.

[0034] During the installation of the fracture fixation brace, the fractured bone is first spliced ​​together, and the first nail body 1 is fixed to the bone at an angle. The first clamping member 6 is placed on the outer cap 3 so that the first clamping member 6 is connected to the first hemisphere 2. Then, the support rod is passed through the outer cap 3 and the side cap 4. After adjusting the angle of the outer cap 3 and the side cap 4, the first locking bolt 5 is tightened. At this time, a stable support structure is formed. Because the angle between the first nail body 1 and the outer cap 3 can be freely adjusted, an angle structure can be formed between the first nail body 1 and the first nail body 3, which enhances the stability of bone fixation. By installing the side cap 4 on the side of the outer cap 3, the distance between the support rods can be reduced, thus reducing the space occupied by the formed brace.

[0035] First implementation method:

[0036] Reference Figure 1 , Figure 2 A side connecting rod 31 is installed on the side of the outer cap 3. A second hemisphere 32 is installed at the end of the side connecting rod 31 away from the outer cap 3. The side cap 4 is installed on the second hemisphere 32. A second clamping member 7 is installed inside the side cap 4. The second clamping member 7 is used to increase the connection stability between the side cap 4 and the second hemisphere 32.

[0037] During the bracket installation process, the outer cap 3 is first connected to the first support rod. After the installation is stable, the angle of the side cap 4 can be adjusted through the side connecting rod 31 and the second hemisphere 32. After the angle of the side cap 4 is adjusted, the second support rod is locked to the side cap 4. Under the action of the second clamping member 7, the side cap 4 and the second hemisphere 32 are locked together, so that the distance and angle between the two support rods can be adjusted, thus providing better space adaptability.

[0038] Reference Figure 2 A first spherical gripper 61 is provided between the first clamping member 6 and the first hemisphere 2; a second spherical gripper 71 is provided between the second clamping member 7 and the second hemisphere 32.

[0039] When the first locking bolt 5 in the outer cap 3 is tightened, the first clamping member 6 presses down on the first spherical clamp 61, and the first spherical clamp 61 engages with the first hemisphere 2, thereby increasing the locking force and reducing the displacement between the outer cap 3 and the first nail body 1 after tightening. When the first locking bolt 5 in the side cap 4 is tightened, the second clamping member 7 presses down on the second spherical clamp 71, and the second spherical clamp 71 clamps onto the second hemisphere 32, thereby increasing the stability of the connection between the side cap 4 and the side connecting rod 31, thereby enhancing the stability of the overall structure of the support after connection, thus making the bone fixation more stable.

[0040] Second implementation method:

[0041] Reference Figure 3 , Figure 4 The outer cap 3 and the side cap 4 are U-shaped structures. The side cap 4 is fixed to the side of the outer cap 3. The side cap 4 and the outer cap 3 are an integral structure, which reduces the distance between the two support rods, reduces the number of connection points, reduces the space occupied by the bracket, and enhances stability.

[0042] The third implementation method:

[0043] Reference Figure 5 , Figure 6 The outer cap 3 has a lateral connecting rod 34 fixedly installed on its side. The lateral cap 4 is rotatably installed on the lateral connecting rod 34. The lateral cap 4 can rotate relative to the outer cap 3. When the two fracture fixation brackets are nailed at different heights, the angle of the lateral cap 4 can be adjusted to facilitate the installation of the support rod.

[0044] A limiting groove 35 is provided on the side connecting rod 34, and a pressing limiting component 41 is installed inside the side cap 4. An arc-shaped clamping plate 42 is installed on the lower side of the pressing limiting component 41 and is engaged with the side connecting rod 34. When the first locking bolt 5 inside the side cap 4 is tightened, the arc-shaped clamping plate 42 is engaged with the limiting groove 35, which can effectively prevent the side cap 4 from falling off.

[0045] Reference Figure 5, Figure 6 A first breakage groove 33 is provided on the outer cap 3; after the support rod on the outer cap 3 is fixed, it is easy to break off the excess part of the outer cap 3, reduce the length of the outer cap, reduce the height of the bracket, and reduce the height of the bone fixation bracket.

[0046] Reference Figure 7 , Figure 8 A fracture fixation frame includes a pair of fracture fixation frame nails, and a pair of support rods are installed on the outer cap 3 and the lateral cap 4, with a single-headed frame nail 8 installed on the support rods.

[0047] During the installation of the fracture fixation brace, firstly, two fracture fixation brace nails (double-headed nails) are installed at an angle on the bone, and then a single-headed brace nail 8 is installed on the bone. One support rod is locked to the outer cap 3, and another support rod connects the two lateral caps 4 and the single-headed brace nail 8 together.

[0048] First embodiment of single-head bracket nail 8:

[0049] Reference Figure 9 The single-headed support nail 8 includes a second nail body 81. During installation, the second nail body 81 forms an angled structure with the two first nail bodies 1, making the resulting bone fixation support structure more stable. A third hemisphere 82 is fixed to the upper end of the second nail body 81. A single-headed cap 83 is installed on the third hemisphere 82. A second locking bolt 84 is installed inside the single-headed cap 83. The second locking bolt 84 is used to lock the support rod to the single-headed cap 83. An angled structure is formed between the first nail body 1 and the second nail 81.

[0050] Under the action of the third hemisphere 82, the angle of the single cap 83 can be adjusted relative to the second nail body 81, making it easier to adjust the angle of the single cap 83 and to connect the single cap 83 to the support rod.

[0051] Reference Figure 9 A third clamping member 85 is installed inside the single-head cap 83; after the second locking bolt 84 is tightened, it applies force to the support rod, and the support rod presses down on the third clamping member 85. The third clamping member 85 presses against the third hemisphere 82, thereby locking the single-head cap 83 and the second nail body 81. A third spherical claw 86 is provided between the third clamping member 85 and the third hemisphere 82. When the third clamping member 85 is tightening, the third spherical claw 86 is stuck on the third hemisphere 82, increasing the limiting force, thereby increasing the stability of the single-head cap 83 and the second nail body 81 after locking. External threads are provided on the first nail body 1 and the second nail body 81.

[0052] Second embodiment of single-head bracket nail 8:

[0053] Reference Figure 10The single cap 83 has a U-shaped structure and a second breakage groove 87 is provided on the single cap 83. When the support rod is locked, it is easy to break off the excess part of the single cap 83 and shorten the height of the bone fixation bracket.

[0054] Third embodiment of single-head bracket nail 8:

[0055] Reference Figure 10 , Figure 11 A support rod limiting member 88 is installed inside the single-head cap 83. A support rod locking member 89 is installed on the second locking bolt 84. The support rod locking member 89 is threadedly connected to the second locking bolt 84. The support rod locking member 89 is used to lock the support rod onto the support rod limiting member 88. The support rod limiting member 88 generates a pressing force on the third hemisphere 82.

[0056] During the installation of the single-headed bracket nail 8, the support rod passes through the support rod limiting member 88 and the second locking bolt 84 is tightened. At this time, the support rod limiting member 88 exerts a clamping force on the third hemisphere 82. After the third hemisphere 82 is locked with the single-headed cap 83, the support rod locking member 89 is threadedly connected to the second locking bolt 84, locking the support rod onto the support rod limiting member 88, thereby increasing the stability of the support rod installation and improving the overall stability of the fracture fixation bracket.

[0057] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fracture fixation nail, characterized in that, The device includes a first nail body (1), a first hemisphere (2) fixed to the upper end of the first nail body (1), an outer cap (3) installed on the first hemisphere (2), and a side cap (4) installed on the side of the outer cap (3); the outer cap (3) and the side cap (4) are used to install a support rod, and a first locking bolt (5) is installed inside the outer cap (3) and the side cap (4), the first locking bolt (5) is used to lock the support rod, and a first clamping member (6) is installed inside the outer cap (3), the first clamping member (6) is used to increase friction and increase the connection stability between the outer cap (3) and the first hemisphere (2).

2. The fracture fixation nail according to claim 1, characterized in that, The outer cap (3) is equipped with a side connecting rod (31) on its side. A second hemisphere (32) is installed on the side connecting rod (31) away from the outer cap (3). The side cap (4) is installed on the second hemisphere (32). A second clamping member (7) is installed inside the side cap (4). The second clamping member (7) is used to increase the connection stability between the side cap (4) and the second hemisphere (32).

3. The fracture fixation nail according to claim 2, characterized in that, A first spherical gripper (61) is provided between the first clamping member (6) and the first hemisphere (2); a second spherical gripper (71) is provided between the second clamping member (7) and the second hemisphere (32).

4. The fracture fixation nail according to claim 1, characterized in that, The outer cap (3) and the side cap (4) are U-shaped structures, and the side cap (4) is fixed to the side of the outer cap (3).

5. The fracture fixation nail according to claim 1, characterized in that, The outer cap (3) is equipped with a side connecting rod (34) on its side. The side cap (4) is rotatably mounted on the side connecting rod (34). A limit groove (35) is opened on the side connecting rod (34). A pressing limit member (41) is installed inside the side cap (4). An arc-shaped clamping plate (42) is installed on the lower side of the pressing limit member (41) and is snapped onto the side connecting rod (34).

6. The fracture fixation nail according to claim 5, characterized in that, A first break groove (33) is provided on the outer cap (3).

7. A fracture fixation brace, characterized in that, It includes a pair of fracture fixation support nails as described in any one of claims 1-6, with a pair of support rods mounted on the outer cap (3) and the lateral cap (4), and a single-headed support nail (8) mounted on the support rods.

8. A fracture fixation bracket according to claim 7, characterized in that, The single-headed support nail (8) includes a second nail body (81), a third hemisphere (82) is fixed to the upper end of the second nail body (81), a single-headed cap (83) is installed on the third hemisphere (82), and a second locking bolt (84) is installed inside the single-headed cap (83). The second locking bolt (84) is used to lock the support rod to the single-headed cap (83); an angle structure is formed between the first nail body (1) and the second nail body (81).

9. A fracture fixation bracket according to claim 8, characterized in that, The single-head cap (83) is equipped with a third clamping member (85); a third spherical clamping claw (86) is provided between the third clamping member (85) and the third hemisphere (82); the first nail body (1) and the second nail body (81) are provided with external threads; the single-head cap (83) is a U-shaped structure, and a second break groove (87) is provided on the single-head cap (83).

10. A fracture fixation bracket according to claim 8, characterized in that, A support rod limiting member (88) is installed inside the single-head cap (83), and a support rod locking member (89) is installed on the second locking bolt (84). The support rod locking member (89) is threadedly connected to the second locking bolt (84). The support rod locking member (89) is used to lock the support rod on the support rod limiting member (88). The support rod limiting member (88) generates a pressing force on the third hemisphere (82).

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