A plate-type external fixator for tibial fracture

Abstract

The utility model relates to the technical field of fracture treatment, specifically to a plate-type external fixator for tibial fractures, comprising an external fixator, a locking nail hole is provided inside the external fixator, a locking nail is arranged inside the external fixator, an extension plate is slidably connected to the middle of the external fixator, a bolt hole is provided inside the extension plate, a bolt is spirally connected inside the extension plate, a hollow plate is fixedly connected to the inner side of the external fixator, an extension plate is slidably connected to the inner side of the hollow plate, and a rotating shaft is rotatably connected to the inner top end of the extension plate; by providing the extension plate, the hollow plate, the extension plate and the rotating shaft, the device can adjust the position of the locking nail hole in the external fixator according to the position of different fractures, so as to facilitate the insertion of the locking nail into the locking nail hole in the external fixator, and at the same time reduce the time and difficulty required for operators to build the plate-type external fixator.

Description

Technical Field

[0001] The utility model relates to the technical field of fracture treatment, in particular to a plate-type external fixator used for tibial fractures. Background Art

[0002] A plate-type external fixator for tibial fractures disclosed in Chinese utility model patent application CN 217744556 U has a similar anatomical shape to the medial side of the distal end of the tibia and the medial side of the tibial plateau, the middle section of the plate-type structure is consistent with the anterior medial side of the tibial shaft, and there are multi-angle adjustable locking screw holes at both ends. The present invention complies with the medical AO and BO theories, meets the needs of domestic adults with a height of 160 to 175 cm, can fully take into account various types of tibial fractures, can replace internal fixation, avoid secondary surgery for internal fixation removal, and prevent complications of internal fixation of tibial fractures. It can also solve the problems that plague the patient population who are not suitable for internal fixation. At the same time, it makes up for the shortcomings of the traditional single-arm external frame, which is cumbersome, heavy, poorly stable, and unable to effectively fix the distal and proximal tibial fractures. The intraoperative operation saves time and effort, and the social benefits are economical and practical, reducing the pain of lying in bed for a long time after surgery and shortening the patient's recovery time.

[0003] Generally, when treating tibial fractures, a fixation frame needs to be built on the outside of the patient's leg after the operation to fix the locking nails in the tibia. However, building the fixation frame is difficult and time-consuming. At the same time, the built fixation frame is large in size, which makes it difficult for the patient's leg to move. In addition, the external fixation frame needs to be made according to the length of the patient's tibia, which increases the cost of treatment. Therefore, in view of the above problems, a plate-type external fixator for tibial fractures is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a plate-type external fixator for tibial fractures, so as to solve the problem that it is difficult and time-consuming to build an external fixator in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A plate-type external fixator for tibial fractures comprises an external fixator, a locking nail hole is provided inside the external fixator, a locking nail is arranged inside the external fixator, an extension plate is slidably connected to the middle of the external fixator, a bolt hole is provided inside the extension plate, a bolt is spirally connected inside the extension plate, a hollow plate is fixedly connected to the inner side of the external fixator, an extension plate is slidably connected to the inner side of the hollow plate, and a rotating shaft is rotatably connected to the inner top end of the extension plate.

[0007] Preferably, the middle of the rear end face of the external fixator is spirally connected with a bolt, the locking nail is inserted into the locking nail hole of the external fixator, and the bolt is inserted into the bolt hole in the middle of the rear end face of the external fixator and the middle of the interior of the extension plate.

[0008] Preferably, the rotation angle of the rotating shaft is 45 degrees upward and downward from the middle of the extension plate outside the rotating shaft, a convex plate is arranged below the top end of the outer side of the extension plate, a slide groove is opened on the front end surface inside the hollow plate, and the width of the slide groove on the front end surface inside the hollow plate is the same as the length of the convex plate.

[0009] Preferably, the rear end face of the hollow plate is fixedly connected to a hollow block, the rear end face of the hollow block is fixedly connected to a threaded fixing block, the threaded fixing block is spirally connected to a threaded rod, the front top end of the threaded rod is rotatably connected to an extrusion plate, the front end face of the extrusion plate is fixedly connected to a first rack, and the rear end face of the extension plate is fixedly connected to a second rack.

[0010] Preferably, a handle is fixedly connected to the rear top of the threaded rod, the left and right sides of the extrusion plate are slidably connected to the hollow plate, the inner side of the first rack contacts the second rack, and the outer side of the second rack contacts the hollow plate.

[0011] Preferably, the length of the first rack is the same as that of the second rack, and a slope inclined at 45 degrees from the inside to the outside is provided on the right side of the first rack and the left side of the second rack.

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

[0013] By means of the provided extension plate, hollow plate, extension plate and rotating shaft, the device can adjust the position of the locking nail hole in the external fixator according to the position of different fractures, so as to facilitate the insertion of the locking nail into the locking nail hole in the external fixator, and at the same time reduce the time and difficulty required for operators to build a plate-type external fixator; and by means of the provided threaded fixing block, threaded rod, extrusion plate, first rack and second rack, the device can fix the position where the extension plate extends outward, so as to prevent the external fixator from shaking or becoming unstable when being fixed on the outside of the patient's tibia. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a top view cross-sectional schematic diagram of the external fixator of the utility model;

[0016] Figure 3 It is a top view cross-sectional schematic diagram of the hollow plate of the utility model;

[0017] Figure 4 It is a three-dimensional schematic diagram of the extruded plate of the utility model.

[0018] In the figure: 1. external fixator; 2. locking nail hole; 3. extension plate; 4. bolt hole; 5. hollow plate; 6. extension plate; 7. rotating shaft; 8. locking nail; 9. bolt; 10. hollow block; 11. threaded rod; 12. turning handle; 13. threaded fixing block; 14. extrusion plate; 15. first rack; 16. second rack. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0021] A plate-type external fixator for tibial fractures comprises an external fixator 1, a locking nail hole 2 is provided inside the external fixator 1, a locking nail 8 is arranged inside the external fixator 1, an extension plate 3 is slidably connected to the middle of the external fixator 1, a bolt hole 4 is provided inside the extension plate 3, a bolt 9 is spirally connected to the extension plate 3, a hollow plate 5 is fixedly connected to the inner side of the external fixator 1, an extension plate 6 is slidably connected to the hollow plate 5, a rotating shaft 7 is rotatably connected to the inner top of the extension plate 6, and the bolt 9 is spirally connected to the middle of the rear end surface of the external fixator 1.

[0022] Further reading Figure 1-Figure 2 As shown, by setting the extension plate 3, hollow plate 5, extension plate 6 and rotating shaft 7, the locking nail 8 is inserted into the locking nail hole 2 of the external fixator 1, and the bolt 9 is inserted into the bolt hole 4 in the middle of the rear end surface of the external fixator 1 and the middle of the extension plate 6. The rotation angle of the rotating shaft 7 is 45 degrees upward and downward from the middle of the extension plate 6 outside the rotating shaft 7. A convex plate is arranged below the top end of the outer side of the extension plate 6, and a slide groove is arranged on the front end surface of the hollow plate 5. The width of the slide groove on the front end surface of the hollow plate 5 is the same as the length of the convex plate, so that the device can adjust the position of the locking nail hole 2 in the external fixator 1 according to the position of different fractures, so as to facilitate the insertion of the locking nail 8 into the locking nail hole 2 in the external fixator 1, and at the same time reduce the time and difficulty required for the operator to build the plate-type external fixator 1.

[0023] Further reading Figure 1-Figure 4As shown, the rear end face of the hollow plate 5 is fixedly connected to the hollow block 10, the rear end face of the hollow block 10 is fixedly connected to the threaded fixing block 13, the threaded fixing block 13 is spirally connected to the threaded rod 11, the front end of the threaded rod 11 is rotatably connected to the extrusion plate 14, the front end face of the extrusion plate 14 is fixedly connected to the first rack 15, and the rear end face of the extension plate 6 is fixedly connected to the second rack 16. By setting the threaded fixing block 13, the threaded rod 11, the extrusion plate 14, the first rack 15 and the second rack 16, the rear end of the threaded rod 11 A turning handle 12 is fixedly connected, and the left and right sides of the extrusion plate 14 are slidably connected to the hollow plate 5. The inner side of the first rack 15 contacts the second rack 16, and the outer side of the second rack 16 contacts the hollow plate 5. The length of the first rack 15 is the same as the length of the second rack 16, and the right side of the first rack 15 and the left side of the second rack 16 are both provided with a slope inclined 45 degrees from the inside to the outside, so that the device can fix the position of the extension plate 6 extending outward to prevent shaking and instability when the external fixator 1 is fixed to the outside of the patient's tibia.

[0024] When using the plate-type external fixator for tibial fracture of the present embodiment, the locking nail hole 2 of the external fixator 1 is sleeved on the outside of the locking nail 8 fixed on the outside of the patient's tibia, and the shape of the external fixator 1 is adjusted according to the position of the patient's locking nail 8, and the external fixator 1 is pulled up and down, and the extension plate 6 slides inside the external fixator 1. After measuring the distance between the locking nails 8, the bolt 9 is inserted into the bolt hole 4 inside the extension plate 3 and the rear end face of the external fixator 1. The length of the external fixator 1 is fixed, and then the external fixator 1 is fixed. Pull to the left and right sides, the extension plate 6 slides outward from the inside of the hollow plate 5 on the inner side of the external fixer 1. After the width of the external fixer 1 is adjusted, turn the handle 12, the handle 12 drives the threaded rod 11 to rotate, and the threaded rod 11 drives the extrusion plate 14 to move toward the position of the extension plate 6 through the threaded fixing block 13, until the first rack 15 on the front end surface of the extrusion plate 14 is engaged with the second rack 16 on the rear end surface of the extension plate 6, and the fixation is completed. At this time, the external fixer 1 can be put on the outside of the locking nail 8 and fixed, and the installation of the external fixer 1 is completed.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A plate-type external fixator for tibial fractures, comprising an external fixator (1), characterized in that: The external fixing frame (1) is provided with a locking nail hole (2), the external fixing frame (1) is provided with a locking nail (8), the external fixing frame (1) is slidably connected to an extension plate (3) in the middle, the extension plate (3) is provided with a bolt hole (4), the extension plate (3) is spirally connected with a bolt (9), the internal side of the external fixing frame (1) is fixedly connected with a hollow plate (5), the internal side of the hollow plate (5) is slidably connected with an extension plate (6), and the internal top end of the extension plate (6) is rotatably connected with a rotating shaft (7).

2. A plate-type external fixator for tibial fracture according to claim 1, characterized in that: The middle of the rear end face of the external fixing frame (1) is screwed to the bolt (9), the locking nail (8) is inserted into the locking nail hole (2) of the external fixing frame (1), and the bolt (9) is inserted into the bolt hole (4) in the middle of the rear end face of the external fixing frame (1) and in the middle of the extension plate (6).

3. A plate-type external fixator for tibial fracture according to claim 2, characterized in that: The rotation angle of the rotating shaft (7) is 45 degrees upward and downward from the middle of the extension plate (6) outside the rotating shaft (7), a convex plate is arranged below the top end of the outside of the extension plate (6), a slide groove is arranged on the front end surface inside the hollow plate (5), and the width of the slide groove on the front end surface inside the hollow plate (5) is the same as the length of the convex plate.

4. A plate-type external fixator for tibial fracture according to claim 1, characterized in that: The rear end face of the hollow plate (5) is fixedly connected to a hollow block (10), the rear end face of the hollow block (10) is internally fixedly connected to a threaded fixing block (13), the threaded fixing block (13) is internally spirally connected to a threaded rod (11), the front top end of the threaded rod (11) is rotatably connected to an extrusion plate (14), the front end face of the extrusion plate (14) is fixedly connected to a first rack (15), and the rear end face of the extension plate (6) is fixedly connected to a second rack (16).

5. A plate-type external fixator for tibial fracture according to claim 4, characterized in that: The top rear end of the threaded rod (11) is fixedly connected to a turning handle (12); the left and right sides of the extrusion plate (14) are slidably connected to the hollow plate (5); the inner side of the first rack (15) contacts the second rack (16); and the outer side of the second rack (16) contacts the hollow plate (5).

6. A plate-type external fixator for tibial fracture according to claim 5, characterized in that: The length of the first rack (15) is the same as that of the second rack (16), and a slope inclined at 45 degrees from the inside to the outside is provided on the right side of the first rack (15) and the left side of the second rack (16).

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