A traction device for assisting reduction during surgery of complex tibial plateau fractures

Abstract

This invention relates to the field of orthopedic traction technology and provides a traction device for assisting reduction during surgery of complex tibial plateau fractures. The device includes a lead screw; one end of the lead screw is fixedly connected to a base; a support sleeve is slidably fitted onto the lead screw along its axial direction, allowing the support sleeve to move on the lead screw; two feed sleeves are threaded onto the lead screw, located on opposite sides of the support sleeve; and pin fixation mechanisms are fixedly connected to both the support sleeve and the base, each fixing two Kirschner wires. The traction device provides that inserts relatively thick Kirschner wires into the tibial and femoral shafts, respectively. By moving the pin fixation mechanisms fixed to the support sleeve, the tibia and femur are retracted, facilitating fracture reduction during surgery without the need for additional skin or soft tissue retractors.

Description

Technical Field

[0001] This utility model belongs to the field of orthopedic traction technology, and in particular relates to a traction device for assisting reduction during surgery for complex tibial plateau fractures. Background Technology

[0002] Complex tibial plateau fractures are often accompanied by severe swelling of the knee joint. Before elective surgery, patients often need to rest in bed for a long time to reduce the swelling. During this period, due to the contracture of muscles and ligaments, traction is extremely difficult during fracture reduction during surgery. Simple surgical retractors are not enough to open the fracture, which has a significant impact on the surgery. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a traction device for assisting reduction during surgery for complex tibial plateau fractures, aiming to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution.

[0005] This utility model embodiment provides a traction device for assisting reduction during surgery for complex tibial plateau fractures, including a lead screw;

[0006] One end of the lead screw is fixedly connected to the base; a support sleeve is slidably fitted on the lead screw along its axial direction, meaning the support sleeve can move on the lead screw.

[0007] Two feed sleeves are fitted onto the lead screw via a threaded connection, with the two feed sleeves located on opposite sides of the support sleeve;

[0008] Both the support sleeve and the base are fixedly connected with needle fixing mechanisms, which respectively fix two Kirschner wires.

[0009] Furthermore, the two needle fixing mechanisms are located on the same side of the lead screw.

[0010] Furthermore, the needle fixation mechanism includes a connecting rod, which is fixedly connected to a support sleeve. A support cylinder is fixedly installed on the connecting rod, and a through hole is provided on the support cylinder. The through hole is adapted to the Kirschner wire. In use, the Kirschner wire, which is inserted and fixed on the patient's bone, is passed through the through hole.

[0011] Furthermore, a limiting screw sleeve is coaxially rotatably provided at the end of the support cylinder. The limiting screw sleeve is sleeved on the fastening screw through a threaded connection. The inner end of the fastening screw extends into the support cylinder, and an arc-shaped clamping block is fixedly installed at the inner end of the fastening screw located inside the support cylinder.

[0012] Furthermore, a limit shank block is fixedly installed at the outer end of the limit sleeving.

[0013] Compared with the prior art, the beneficial effects of the traction device of this utility model are:

[0014] The two Kirschner wires of this invention are inserted and fixed into the patient's tibia and femur respectively. Since the base is stationary, the position of the support sleeve can be adjusted by the feed screw sleeve, that is, the position between the two needle fixation mechanisms can be adjusted. Therefore, after the two Kirschner wires are inserted into the patient's tibia and femur respectively, the traction between the tibia and femur can be achieved by moving the needle fixation mechanism fixed to the support sleeve.

[0015] Therefore, the traction device provided by this utility model inserts relatively thick Kirschner wires into the tibial shaft and femoral shaft respectively. By moving the pin fixation mechanism fixed to the support sleeve, the tibia and femur are pulled apart. Without the need for additional skin or soft tissue retractors, it can easily pull apart the bones to facilitate fracture reduction during surgery. It has the advantage of strong traction force, which not only facilitates fracture reduction but also relieves the surgeon's physical strength during surgery and avoids soft tissue compression damage caused by long-term retractors. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0017] Figure 1 This is a front view of a traction device for assisting reduction during surgery for complex tibial plateau fractures according to the present invention.

[0018] Figure 2 for Figure 1 A top view of a traction device for assisting reduction during surgery for complex tibial plateau fractures;

[0019] Figure 3 This is a schematic diagram of the needle fixing mechanism provided by this utility model.

[0020] The attached figures are labeled as follows: 100, lead screw; 101, support sleeve; 102, feed sleeve; 103, base;

[0021] 200. Kirschner wires;

[0022] 300. Needle body fixing mechanism; 301. Connecting support rod; 302. Support cylinder; 3021. Through hole; 303. Limiting screw sleeve; 304. Fastening screw; 305. Limiting handle block; 306. Arc-shaped clamping block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] like Figures 1-3 As shown, in one embodiment of the present invention, a traction device for assisting reduction during surgery for complex tibial plateau fractures is provided, including a lead screw 100, one end of which is fixedly connected to a base 103; a support sleeve 101 is slidably sleeved on the lead screw 100 along the axial direction of the lead screw 100, that is, the support sleeve 101 can move on the lead screw 100.

[0026] Furthermore, two feed sleeves 102 are threadedly connected to the lead screw 100. The two feed sleeves 102 are located on both sides of the support sleeve 101. By operating the tool to rotate the feed sleeves 102, the position of the feed sleeves 102 on the lead screw 100 can be adjusted. That is, by driving the feed sleeves 102 to move on the lead screw 100, the support sleeve 101 after the position is adjusted is fixed by the feed sleeves 102.

[0027] In this embodiment of the invention, a needle fixing mechanism 300 is fixedly connected to both the support sleeve 101 and the base 103. The two needle fixing mechanisms 300 are located on the same side of the lead screw 100, and each of the two needle fixing mechanisms 300 fixes a Kirschner wire 200. In specific implementation, the two Kirschner wires 200 are inserted and fixed into the patient's tibia and femur, respectively. Since the base 103 is stationary, the support sleeve 101 can be adjusted by the feed screw sleeve 102, which can adjust the position between the two needle fixing mechanisms 300. Therefore, after the two Kirschner wires 200 are inserted into the patient's tibia and femur, traction between the tibia and femur is achieved by moving the needle fixing mechanism 300 fixed to the support sleeve 101.

[0028] In some embodiments, such as Figure 3 As shown, in this embodiment, the needle fixing mechanism 300 fixedly connected to the support sleeve 101 and the needle fixing mechanism 300 fixedly connected to the base 103 have the same structure. Taking the structure of the needle fixing mechanism 300 installed on the support sleeve 101 as an example, the structure of the needle fixing mechanism 300 is described in detail below:

[0029] Please refer to Figure 2 and Figure 3In this embodiment of the utility model, the needle fixing mechanism 300 includes a connecting rod 301, which is fixedly connected to the support sleeve 101. A support cylinder 302 is fixedly installed on the connecting rod 301. A through hole 3021 is opened on the support cylinder 302. The through hole 3021 is adapted to the Kirschner wire 200. In use, the Kirschner wire 200, which is inserted and fixed on the patient's bone, is passed through the through hole 3021.

[0030] Furthermore, a limiting sleeve 303 is coaxially rotatably provided at the end of the support cylinder 302. The limiting sleeve 303 is threaded onto the fastening screw 304. The inner end of the fastening screw 304 extends into the support cylinder 302. A limiting shank block 305 is fixedly installed at the outer end of the limiting sleeve 303. An arc-shaped clamping block 306 is fixedly installed at the inner end of the fastening screw 304 located inside the support cylinder 302. The fastening screw 304 can only move axially within the support cylinder 302. Correspondingly, the fastening screw 304 cannot rotate within the support cylinder 302. In this embodiment, by rotating the limiting sleeve 303, based on the threaded connection between the limiting sleeve 303 and the fastening screw 304, the fastening screw 304 is pushed to move within the support cylinder 302, thereby driving the arc-shaped clamping block 306 to fasten and fix the Kirschner wire 200 penetrating the through hole 3021.

[0031] It is understood that the traction device provided by this utility model inserts relatively thick Kirschner wires 200 into the tibial shaft and femoral shaft respectively. By moving the needle fixation mechanism 300 fixed to the support sleeve 101, the tibia and femur are pulled apart. Without the need for additional skin or soft tissue retractors, it can easily pull apart the bones to facilitate fracture reduction during surgery. It has the advantage of strong traction force, which can not only facilitate fracture reduction, but also relieve the surgeon's physical strength during surgery and avoid soft tissue compression damage caused by long-term retractors.

[0032] The above solutions are merely illustrative examples of preferred embodiments, but are not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0033] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0034] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A traction device for assisting in the reduction of complex tibial plateau fractures during surgery, characterized in that, Including lead screw (100); One end of the lead screw (100) is fixedly connected to the base (103); a support sleeve (101) is slidably sleeved on the lead screw (100) along the axial direction of the lead screw (100); Two feed sleeves (102) are fitted on the lead screw (100) by means of threaded connection, and the two feed sleeves (102) are located on both sides of the support sleeve (101); Both the support sleeve (101) and the base (103) are fixedly connected with needle fixing mechanisms (300), and the two needle fixing mechanisms (300) fix the two Kirschner needles (200) respectively.

2. The traction device for assisting in the reduction of complex tibial plateau fractures during surgery according to claim 1, characterized in that, The two needle fixing mechanisms (300) are located on the same side of the lead screw (100).

3. The traction device for assisting reduction during surgery of complex tibial plateau fractures according to claim 2, characterized in that, The needle fixing mechanism (300) includes a connecting rod (301), which is fixedly connected to the support sleeve (101); A support cylinder (302) is fixedly installed on the connecting rod (301). The support cylinder (302) has a through hole (3021) that is compatible with the Kirschner wire (200).

4. The traction device for assisting in the reduction of complex tibial plateau fractures during surgery according to claim 3, characterized in that, A limiting screw sleeve (303) is coaxially rotatably provided at the end of the support cylinder (302), and the limiting screw sleeve (303) is sleeved on the fastening screw (304) by means of threaded connection; The inner end of the fastening screw (304) extends into the support cylinder (302), and an arc-shaped clamp (306) is fixedly installed on the inner end of the fastening screw (304) located in the support cylinder (302).

5. The traction device for assisting reduction during surgery of complex tibial plateau fractures according to claim 4, characterized in that, The outer end of the limiting screw sleeve (303) is fixedly installed with a limiting handle block (305).

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