An auxiliary reduction and fixation frame for internal fixation of fractures

Abstract

This utility model belongs to the field of medical device technology, and in particular, it is an auxiliary reduction and fixation bracket for internal fixation surgery of fractures. It includes at least two bases and screws for insertion into the bone. The screws can be inserted through holes in the bases to be screwed into the bone. It also includes a telescopic member and a universal joint connected sequentially between the bases. The telescopic member has a first locking member to fix its total length, and the universal joint has a second locking member to fix its rotation angle. This utility model solves the drawbacks of several existing technologies that directly install steel plates, reduces the operational difficulty of the steel plate installation process, and significantly improves the effectiveness of reduction and internal fixation surgery and the quality of postoperative rehabilitation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an auxiliary reduction and fixation bracket for internal fixation surgery of fractures. Background Technology

[0002] Limb fractures are common traumas in orthopedic clinics, and in most cases require open reduction and internal fixation surgery, which is the plate and screw fixation that everyone is familiar with.

[0003] Before installing the plate, the fracture needs to be reduced, meaning the broken ends need to be restored to their original aligned positions. The most challenging aspect of the surgery is maintaining this reduction before the plate is fixed in place, especially in cases of severe comminuted fractures. Several common clinical methods include: ① an assistant directly grasping the broken ends with both hands to hold them in place; ② using different types of reduction forceps or bone-holding forceps to clamp the broken ends and hold them in place; ③ or temporarily fixing the fracture ends with Kirschner wires (a type of steel wire).

[0004] For methods ① and ②, whether using hands or bone forceps, it will hinder the placement of the plate. If the hands or bone forceps are removed and the plate is placed on the surface of the bone, it will have to be repositioned. Moreover, the presence of the plate will partially affect the maintenance of the repositioning, which is a contradiction.

[0005] For temporary fixation with Kirschner wires in method ③, the small size of the Kirschner wires usually does not affect the installation of the plate. However, for severe comminuted fractures, the Kirschner wires often have no bone to attach to and cannot play their intended role.

[0006] For severe comminuted fractures, the ideal approach is to first reduce and align the most significant fracture fragments, restoring the bone's length and general shape, maintaining this reduction, and then reattach the other minor fragments. Therefore, a small, stable temporary auxiliary fixation device that does not interfere with plate placement is needed to maintain the reduction and create conditions for subsequent plate installation.

[0007] Therefore, this application proposes an auxiliary reduction and fixation bracket for internal fixation of fractures that can temporarily fix the fracture ends without affecting the normal installation of the steel plate. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an auxiliary reduction and fixation bracket for internal fixation of fractures, which solves the problems associated with several existing technologies that directly install steel plates.

[0009] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary reduction and fixation bracket for internal fixation of fractures, comprising at least two bases and screws for being driven into the bone, wherein the screws can be inserted into holes on the bases to be screwed into the bone, and further comprising a telescopic member and a universal joint connected in sequence between the bases, wherein the telescopic member is provided with a first locking member for fixing the total length of the telescopic member, and the universal joint is provided with a second locking member for fixing the rotation angle of the universal joint.

[0010] Preferably, the telescopic component includes an outer tube and an inner rod, and the first locking component includes a knob screw and is disposed on the outer tube.

[0011] Preferably, the outer tube and the inner rod are rotatably connected.

[0012] Preferably, the telescopic member includes at least two plate-shaped connecting arms, a bolt, and a nut that mates with the bolt. The connecting arms are provided with waist-shaped holes through which the bolt passes and penetrates the surface of the connecting arm.

[0013] Preferably, the universal joint is connected between the base and the telescopic component.

[0014] Preferably, the universal joint includes:

[0015] Connectors, the two connectors respectively connect the base and the telescopic component;

[0016] A cross shaft is used to rotatably connect two connectors, such that the rotation axes of the two connectors are perpendicular to each other;

[0017] The first locking element includes a wing nut and is threadedly engaged with the cross shaft at the exposed portion of the connector.

[0018] Compared with the prior art, this utility model provides an auxiliary reduction and fixation bracket for internal fixation of fractures, which has the following beneficial effects:

[0019] This new type of auxiliary reduction and fixation bracket for internal fixation of fractures solves the drawbacks of several existing technologies that directly install steel plates, reduces the operational difficulty of the steel plate installation process, and significantly improves the effect of reduction and internal fixation surgery and the quality of postoperative rehabilitation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of an auxiliary reduction and fixation bracket for internal fixation of fractures.

[0021] Figure 2 This is a three-dimensional structural diagram of an auxiliary reduction and fixation bracket for internal fixation of fractures, mainly showing another embodiment of the telescopic component.

[0022] In the picture:

[0023] 1. Base; 11. Holes;

[0024] 2. Screws;

[0025] 3. Telescopic component; 31. First locking component; 311. Knob screw; 32. Outer tube; 33. Inner rod; 34. Connecting arm; 341. Waist-shaped hole; 35. Bolt; 36. Nut;

[0026] 4. Universal joint; 41. Second locking element; 411. Wing nut; 42. Connecting element; 43. Cross shaft. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1:

[0029] Please see Figure 1 The present invention provides the following technical solution: an auxiliary reduction and fixation bracket for internal fixation of fracture, including at least two bases 1 and screws 2 for being driven into the bone. The screws 2 can be inserted into holes 11 on the bases 1 to be screwed into the bone. It also includes a telescopic member 3 and a universal joint 4 connected in sequence between the bases 1. The telescopic member 3 is provided with a first locking member 31 for fixing the total length of the telescopic member 3, and the universal joint 4 is provided with a second locking member 41 for fixing the rotation angle of the universal joint 4.

[0030] As an optional implementation method in this embodiment, during the operation, the two bases 1 are respectively attached to the bone surfaces on both sides of the broken ends and are located on the non-plate installation surface. At this time, the doctor splices the broken ends into place, and the telescopic component 3 and the universal joint 4 can naturally adjust in coordination with the splicing process of the broken ends. After splicing, the total length of the telescopic component 3 and the angle of the universal joint 4 are locked by the first locking component 31 and the second locking component 41, respectively. Finally, the screw 2 is driven into the bone through the hole 11 in the base 1, and the subsequent installation of the steel plate can be carried out. After the steel plate is installed, the entire bracket can be removed by simply unscrewing the screw 2.

[0031] For the base 1, those skilled in the art can adopt a fitting design method suitable for the shape of the bone surface, and this technical solution does not limit this.

[0032] Since this bracket is installed on a non-steel plate mounting surface, and the universal joint 4 and the telescopic component 3 can adaptively change according to the position of the broken end, even if the surfaces on both sides of the broken end that can be used for mounting the base 1 are at different intervals or directions, it can adaptively adjust and finally complete the fixation. Therefore, it can solve the drawbacks of several existing technologies that directly install steel plates, reduce the operational difficulty of the steel plate installation process, and greatly improve the effect of repositioning and internal fixation surgery and the quality of postoperative rehabilitation.

[0033] The above structure solves the drawbacks of several existing technologies that directly install steel plates, reduces the operational difficulty of the steel plate installation process, and significantly improves the effect of repositioning and internal fixation surgery and the quality of postoperative rehabilitation.

[0034] like Figure 1 As shown, the telescopic component 3 includes an outer tube 32 and an inner rod 33. The first locking component 31 includes a knob screw 311 and is disposed on the outer tube 32. The outer tube 32 and the inner rod 33 are rotatably connected.

[0035] As an optional implementation method in this embodiment, the telescopic component 3 is constructed by extending and retracting the outer tube 32 and the inner rod 33, which has a lower production and manufacturing cost. Furthermore, the rotatable sleeve connection between the outer tube 32 and the inner rod 33 can further improve the adaptability of the base 1 to non-steel plate mounting surfaces. The knob screw 311 makes it more convenient to fix the total length of the telescopic component 3.

[0036] like Figure 1 As shown, the universal joint 4 connects the base 1 and the telescopic member 3. The universal joint 4 includes:

[0037] Connector 42, two connectors 42 are respectively connected to base 1 and telescopic component 3;

[0038] The cross shaft 43 is used to rotatably connect two connecting parts 42, such that the rotation axes of the two connecting parts 42 are perpendicular to each other;

[0039] The first locking member 31 includes a wing nut 411, which is threadedly engaged with the cross shaft 43 at the exposed portion of the connector 42.

[0040] As an optional implementation method in this embodiment, the universal joint 4 described above is a relatively common universal joint 4 solution. The shaft end of the cross shaft 43 in the universal joint 4 extends out of the surface of the connector 42, so that the wing nut 411 can lock each axial angle, ensuring that the broken end will not easily change during temporary fixing, and making the installation process of the steel plate more stable.

[0041] Example 2:

[0042] Please see Figure 2Compared with Embodiment 1, the difference in this embodiment is that the telescopic member 3 includes at least two plate-shaped connecting arms 34, bolts 35 and nuts 36 that cooperate with the bolts 35. The connecting arms 34 are provided with waist-shaped holes 341 through which the bolts 35 can pass and penetrate the surface of the connecting arms 34.

[0043] As an optional implementation method in this embodiment, replacing the telescopic tube method with two plate-shaped connecting arms 34 has the advantage of being able to connect multiple bone surfaces at the same time. In particular, in the case of comminuted fractures, multiple bases 1 can be installed, which improves the adaptability of this bracket.

[0044] The working principle and usage process of this utility model are as follows: During the operation, the two bases 1 are respectively attached to the bone surfaces on both sides of the broken ends and are located on the non-steel plate installation surface. At this time, the doctor splices the broken ends into place. The telescopic component 3 and the universal joint 4 can naturally adjust to the splicing process of the broken ends. After splicing, the total length of the telescopic component 3 and the angle of the universal joint 4 are locked by the first locking component 31 and the second locking component 41, respectively. Finally, the screw 2 is driven into the bone through the hole 11 in the base 1, and the subsequent installation of the steel plate can be carried out. After the steel plate is installed, the entire bracket can be removed by simply unscrewing the screw 2.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An auxiliary reduction and fixation bracket for internal fixation of fractures, comprising at least two bases and screws for insertion into the bone, characterized in that, The screw can be inserted into the hole on the base to be screwed into the bone. It also includes a telescopic member and a universal joint connected in sequence between the bases. The telescopic member is provided with a first locking member to fix the total length of the telescopic member, and the universal joint is provided with a second locking member to fix the rotation angle of the universal joint.

2. The auxiliary reduction and fixation bracket for internal fixation of fractures according to claim 1, characterized in that, The telescopic component includes an outer tube and an inner rod, and the first locking component includes a knob screw and is located on the outer tube.

3. The auxiliary reduction and fixation bracket for internal fixation of fractures according to claim 2, characterized in that, The outer tube and the inner rod are rotatably connected.

4. The auxiliary reduction and fixation bracket for internal fixation of fractures according to claim 1, characterized in that, The telescopic component includes at least two plate-shaped connecting arms, a bolt, and a nut that mates with the bolt. The connecting arms are provided with waist-shaped holes through which the bolt passes and through the surface of the connecting arm.

5. An auxiliary reduction and fixation bracket for internal fixation of fractures according to any one of claims 2-4, characterized in that, The universal joint connects the base and the telescopic component.

6. The auxiliary reduction and fixation bracket for internal fixation of fractures according to claim 5, characterized in that, The universal joint includes: Connectors, the two connectors respectively connect the base and the telescopic component; A cross shaft is used to rotatably connect two connectors, such that the rotation axes of the two connectors are perpendicular to each other; The first locking element includes a wing nut and is threadedly engaged with the cross shaft at the exposed portion of the connector.

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