A syndesmotic reduction and positioning device

Abstract

The utility model relates to the field of medical instruments, and in particular to a tibiofibular syndesmotic repositioning and positioning device, comprising two U-shaped main bodies and a hole plate with concave surfaces arranged opposite to each other, an adjusting device is arranged between the U-shaped main bodies, the adjusting device is used to adjust the distance between the two U-shaped main bodies, the top surfaces of the U-shaped main bodies are provided with a plurality of evenly distributed positioning holes, the hole plate is used in conjunction with the positioning holes, the hole plate is provided with a plurality of evenly distributed guide holes, the guide holes are provided with a guide sleeve, the guide sleeve is used to guide an electric drill to open a bone tunnel, the positioning device also includes a positioning guide pin, the positioning guide pin includes a positioning head for positioning outside the skin and a guide rod connected to the U-shaped main body, and is used to open a bone tunnel at a suitable position; the positioning guide pin is used to ensure the position of the opened bone tunnel, which is beneficial to the fixation of the tibia and fibula and improves the safety of the operation.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a tibiofibular syndesmotic repositioning and positioning device. Background Art

[0002] Currently, the main method for syndesmotic reduction is to use reduction clamps to reduce and fix the lower tibia and fibula, followed by screw fixation. This procedure has certain disadvantages. It requires high surgeon experience, is time-consuming, and is prone to iatrogenic malreduction, resulting in adverse consequences such as discomfort in patients' movements and even screw breakage after surgery. Some studies and reports have clearly shown that it is possible or even very likely that the syndesmotic pressure is over-compressed when using reduction clamps. In this case, over-compression is defined as any sign of displacement of the talus from the ankle fossa due to compression of the fibula against the tibia, even if the fibula is in the correct position within the notch.

[0003] A tibiofibular joint locator with publication number CN210784638U discloses a device including an annular sleeve, a fibular guide needle sleeve and a tibial guide needle sleeve; wherein the annular sleeve is provided with an opening so that it can be inserted into the leg, and the curvature of the annular sleeve is at least greater than 180°; the annular sleeve is provided with a positioning structure for fixing the fibular guide needle sleeve and the tibial guide needle sleeve; the fibular guide needle sleeve and the tibial guide needle sleeve can be selectively fixed on the positioning structure at any position of the annular sleeve to position the fibula and tibia, wherein the axial center connection line of the fibular guide needle sleeve and the tibial guide needle sleeve passes through the center of the annular sleeve; it discloses a device for positioning using the annular sleeve, but it has very high requirements for the initial installation position of the annular sleeve, which is difficult for the operator and not very convenient to use. Utility Model Content

[0004] The technical problem to be solved by the utility model is: the problem of positioning and non-parallelism of the bone tunnels during the process of opening the bone tunnels in the tibiofibular syndesmotic reduction surgery.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] First, a tibiofibular syndesmotic reduction and positioning device is provided, comprising two U-shaped bodies and a hole plate with concave surfaces arranged opposite to each other, an adjustment device is arranged between the U-shaped bodies, the adjustment device is used to adjust the distance between the two U-shaped bodies, the top surfaces of the U-shaped bodies are each provided with a plurality of evenly distributed positioning holes, the hole plate is used in conjunction with the positioning holes, the hole plate is provided with a plurality of evenly distributed guide holes, the guide holes are provided with a guide sleeve, the guide sleeve is used to guide an electric drill to open a bone tunnel, the positioning device also comprises a positioning guide needle, the positioning guide needle comprises a positioning head for positioning outside the skin and a guide rod connected to the U-shaped body, and is used to open a bone tunnel at a suitable position.

[0007] Furthermore, the positioning head and the guide rod are arranged vertically; the positioning head and the guide rod are used to make the top surface of the U-shaped body parallel to the bone channel to be opened, thereby ensuring the accuracy and stability of subsequent fixation.

[0008] Furthermore, through holes are provided on the top surface of the U-shaped body at positions corresponding to the guide rods, and the guide rods are plugged into and matched with the through holes; by utilizing the cooperation between the through holes and the guide rods, the device can be stably and accurately fixed on the tibia and fibula, thereby improving the stability of the device.

[0009] Furthermore, a concave scale is provided on the side of the guide rod; the setting of the scale enables the U-shaped body to be accurately fixed in a suitable position, making the position of the opened bone channel more accurate.

[0010] Furthermore, a positioning block is provided on the orifice plate and is plugged into the positioning hole. An angle adjustment device is provided between the positioning block and the positioning hole for adjusting the angle between the orifice plate and the positioning hole. By adjusting the angle between the orifice plate and the positioning hole, the angle of the bone channel can be conveniently adjusted, making the device more stable and reliable to use.

[0011] Furthermore, the adjustment device includes an adjustment protrusion, and a plurality of adjustment protrusions evenly distributed in a ring are arranged on the side of the positioning block, and an adjustment groove is opened at the position of the positioning hole corresponding to the adjustment protrusion; the cooperation between the adjustment protrusion and the adjustment groove can stabilize the angle between the orifice plate and the positioning hole, thereby improving the stability of the device.

[0012] Furthermore, the angle between adjacent adjusting protrusions is 4° to 6°.

[0013] Furthermore, the end of the guide sleeve is connected to the guide hole by a thread; by opening a thread at the end of the guide sleeve to connect it to the guide hole, the guide sleeve can be installed on the designated guide hole when in use, so as to guide the drill bit to open a bone channel, thereby improving the stability and safety of the operation.

[0014] Furthermore, the adjustment device includes a screw rod, and mounting blocks are provided on each of the U-shaped bodies. The screw rod is used to connect two mounting blocks. The distance between the two U-shaped bodies can be adjusted by rotating the screw rod, and then the bodies can be clamped on the patient's tibia and fibula. The operation is simple and the cost is low.

[0015] Furthermore, the screw is a T-shaped screw, in which one of the mounting blocks is connected to the screw by a thread; through the T-shaped screw, the user can adjust the distance between the two U-shaped bodies with one hand without the help of other work, which is convenient for user operation.

[0016] The utility model has the following beneficial effects: the utility model uses two U-shaped main bodies for preliminary fixation, and then uses the guide holes on the orifice plate to assist the doctor in opening the bone tunnel, thereby ensuring that the opened bone tunnel is accurately positioned. At the same time, the setting of the positioning guide pin ensures that the opened bone tunnel is parallel to the ankle joint cavity, thereby making subsequent positioning more accurate, improving the safety of the operation, and facilitating the subsequent recovery of the patient. At the same time, the setting of the scale on the positioning guide pin makes the device highly accurate and has a high safety factor. At the same time, the device only requires one person to complete the surgical operation, with a short learning curve and short operation time, which reduces the patient's pain and reduces the patient's economic pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of this embodiment;

[0019] Figure 2 is a top view of the U-shaped body of this embodiment;

[0020] Figure 3 This is a usage state diagram of this embodiment;

[0021] Figure 4 Schematic diagram of the structure of the orifice plate of this embodiment. DETAILED DESCRIPTION

[0022] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0023] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The utility model provides a tibiofibular joint reduction and positioning device, such as Figure 1 As shown, it includes two U-shaped bodies 1 with concave surfaces facing each other, wherein an adjustment device is provided between the two U-shaped bodies 1 for adjusting the distance between the two U-shaped bodies 1. During use, the two U-shaped bodies 1 are first placed at designated positions of the patient's tibia and fibula, mainly wrapping the outer side of the calf and the fibula side, and then the adjustment device is operated to bring the two U-shaped bodies 1 closer to each other to clamp the tibia and fibula.

[0027] Specifically, in order to facilitate the opening of a bone tunnel on the patient's tibia and fibula, the top surface of the U-shaped main body 1 is provided with a plurality of evenly distributed positioning holes 2, and a perforated plate 3 is inserted into the positioning hole 2, wherein the length direction of the perforated plate 3 is perpendicular to the top surface of the U-shaped main body 1, and a plurality of evenly distributed guide holes 4 are opened on the side of the perforated plate 3, and the guide holes 4 are arranged along the length direction of the perforated plate 3, wherein a guide sleeve 42 is provided on the guide hole 4, wherein a thread is provided at the end of the guide sleeve 42 and is threadedly connected with the guide hole 4. When in use, the guide sleeve 42 is screwed into the corresponding guide hole 4, and only one guide sleeve 42 is needed, which saves costs, and can also enable the doctor to open a bone tunnel on the patient more stably and safely during use, thereby improving safety.

[0028] like Figure 3As shown, in order to make the position of the opened bone tunnel appropriate, it also includes a positioning guide pin 6, wherein the positioning guide pin 6 includes a positioning head 61 and a guide rod 62 which are arranged perpendicular to each other. During use, the positioning head 61 is positioned outside the skin, and the guide rod 62 is passed through one of the U-shaped bodies 1. At this time, the bone tunnel opened by the guide sleeve 42 is also parallel to the top surface of the U-shaped body 1. After that, the screw passes through the bone tunnel to fix the tibia and fibula, which can ensure that the tibia and fibula are reduced more accurately and reduce the consequences of poor reduction after surgery.

[0029] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, a positioning block 7 is installed at the position of the hole plate 3 corresponding to the positioning hole 2, and the positioning block 7 is plugged into the positioning hole 2. First, the position where the bone tunnel needs to be opened on the tibia and fibula is found, and the corresponding positioning hole 2 is found, and then the positioning block 7 is inserted into the corresponding positioning hole 2. At this time, the guide hole 4 at a suitable position is found, and then the bone tunnel is opened on the tibia and fibula by an electric drill. In order to ensure that the angle of opening the bone tunnel is appropriate, it is necessary to adjust the angle of the hole plate 3 at this time to ensure that the angle of opening the bone tunnel is appropriate.

[0030] Specifically, in order to facilitate the adjustment of the angle of the orifice plate 3, a plurality of evenly distributed adjusting protrusions 71 are arranged on the side of the positioning block 7, and a plurality of evenly distributed adjusting grooves 21 are opened on the side of the corresponding positioning hole 2 at the positions of the adjusting protrusions 71. Correspondingly, in the present embodiment, the angle between two adjacent adjusting protrusions 71 is 5°, so when adjusting the orifice plate 3, the corresponding adjustment gear is also 5°. The orifice plate 3 is adjusted to a suitable angle to ensure that the angle of the opened bone channel is suitable. In this way, the subsequent tibia and fibula positioning will be more effective and have a high safety factor. The angle between two adjacent adjusting protrusions 71 can be set to other angles according to actual needs.

[0031] like Figure 2 and Figure 3 As shown, through holes 11 are provided at the positions of the guide rods 62 on the top surface of the U-shaped body 1, and the guide rods 62 are plugged into the through holes 11, so that the top surface of the U-shaped body 1 can be parallel to the positioning head 61 on the positioning guide pin 6, wherein scales 63 are provided on the side surfaces of the guide rods 62, and the positions of the bone tunnels can be clearly known through the scales 63. In the present embodiment, the intervals between the guide holes 4 are 1 cm, so during use, the positions of the bone tunnels can be clearly known, making the positions of the bone tunnels more accurate and making the operation safer.

[0032] Specifically, the corresponding U-shaped body 1 and the guide rod 62 can be selected for plug-in cooperation according to actual needs, and the orifice plate 3 is also inserted into the corresponding U-shaped body 1 to ensure the position of the bone tunnel opened therein. At the same time, since X-ray fluoroscopy is sometimes required, the scale 63 is preferably set to a certain depth to ensure that it can be seen clearly under X-ray fluoroscopy.

[0033] like Figure 1 and Figure 2 As shown, the adjusting device includes a screw rod 8, and the corresponding ends of the U-shaped main body 1 are each provided with a mounting block 12, and the two mounting blocks 12 are connected by the screw rod 8. For the convenience of operation, a threaded hole provided on one of the mounting blocks 12 is provided with a corresponding internal thread. In this way, when the screw rod 8 passes through the mounting block 12 without the internal thread and then passes through the other threaded hole with the internal thread during use, it is only necessary to rotate the screw rod 8 to close the other mounting block 12, thereby clamping the two U-shaped main bodies 1 on the tibia and fibula.

[0034] In order to facilitate the rotation of the screw rod 8, a T-shaped screw is selected as the screw rod 8. In this way, during use, only the head of the T-shaped screw needs to be rotated. At the same time, a limiting ring 81 is provided on the screw rod 8. The side surface of the limiting ring 81 contacts the side surface of the corresponding mounting block 12 and is used to abut against the mounting block 12 to prevent the head of the T-shaped screw from interfering with the U-shaped body 1, thereby improving the stability of the device.

[0035] In order to make the patient more comfortable during the process of clamping the patient, a plurality of sponge blocks 13 are arranged on the inner concave surface of the U-shaped main body 1. The sponge blocks 13 are in contact with the patient to achieve a buffering effect to prevent secondary injuries during the operation. In other embodiments, sponge strips or rubber strips can also be used. Suitable buffering materials or structures can be selected according to actual needs.

[0036] It should be understood that the above description of the specific embodiments of the utility model is only for illustrating the technical route and features of the utility model, and its purpose is to enable those skilled in the art to understand the content of the utility model and implement it accordingly, but the utility model is not limited to the above specific implementation methods. All changes or modifications made within the scope of the claims of the utility model should be included in the protection scope of the utility model.

Claims

1. A tibiofibular syndesmotic reduction and positioning device, characterized in that: The invention comprises two U-shaped bodies (1) and a hole plate (3) with concave surfaces arranged opposite to each other. An adjusting device is arranged between the U-shaped bodies (1), and the adjusting device is used to adjust the distance between the two U-shaped bodies (1). The top surfaces of the U-shaped bodies (1) are provided with a plurality of evenly distributed positioning holes (2). The hole plate (3) is used in conjunction with the positioning holes (2). The hole plate (3) is provided with a plurality of evenly distributed guide holes (4). The positioning device also comprises a positioning guide needle (6). The positioning guide needle (6) comprises a positioning head (61) for positioning outside the skin and a guide rod (62) connected to the U-shaped body (1), and is used to open a bone channel at a suitable position.

2. The tibiofibular syndesmotic reduction and positioning device according to claim 1, characterized in that: The positioning head (61) and the guide rod (62) are arranged vertically.

3. The tibiofibular syndesmotic reduction and positioning device according to claim 1, characterized in that: A through hole (11) is provided at a position on the top surface of the U-shaped main body (1) corresponding to the guide rod (62), and the guide rod (62) is plug-fitted into the through hole (11).

4. The tibiofibular syndesmotic reduction and positioning device according to claim 1, characterized in that: The side surface of the guide rod (62) is provided with a concave scale (63).

5. The tibiofibular syndesmotic reduction and positioning device according to claim 1, characterized in that: The orifice plate (3) is provided with a positioning block (7) which is plugged into and matched with the positioning hole (2); an angle adjustment device is provided between the positioning block (7) and the positioning hole (2) for adjusting the angle between the orifice plate (3) and the positioning hole (2).

6. The tibiofibular syndesmotic reduction and positioning device according to claim 5, characterized in that: The adjustment device comprises an adjustment protrusion (71), a plurality of adjustment protrusions (71) evenly distributed in an annular shape are arranged on the side of the positioning block (7), and an adjustment groove (21) is provided at a position of the positioning hole (2) corresponding to the adjustment protrusion (71).

7. The tibiofibular syndesmotic reduction and positioning device according to claim 1, characterized in that: A plurality of evenly distributed sponge blocks (13) are arranged on the inner concave surface of the U-shaped main body (1).

8. The tibiofibular syndesmotic reduction and positioning device according to claim 1, characterized in that: The guide holes (4) are distributed along the length direction of the orifice plate (3), and the intervals between the guide holes (4) are 0.9 to 1.1 cm.

9. The tibiofibular syndesmotic reduction and positioning device according to claim 1, characterized in that: The adjusting device comprises a screw rod (8), and each of the U-shaped bodies (1) is provided with a mounting block (12), and the screw rod (8) is used to connect two of the mounting blocks (12).

10. The tibiofibular syndesmotic reduction and positioning device according to claim 9, characterized in that: The screw rod (8) is a T-shaped screw rod, and one of the mounting blocks (12) is connected to the screw rod (8) via a thread.

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