Combined locking plate with separable distal tibiofibular belt loop plate

Abstract

The combined locking plate comprises a lateral malleolus dissecting plate and a distal tibiofibular combined loop steel plate, an installation hole used for containing the distal tibiofibular combined loop steel plate is formed in the lateral malleolus dissecting plate, and the installation hole penetrates through the top face and the bottom face of the lateral malleolus dissecting plate. The outer contour of the inferior tibiofibular joint loop steel plate is matched with the mounting hole, so that the lateral malleolus dissecting plate and the inferior tibiofibular joint loop steel plate can be naturally separated when the lateral malleolus dissecting plate is detached. When the lateral malleolus dissecting plate is taken out for the second time, the inferior tibiofibular syndesmosis loop steel plate does not need to be taken out at the same time, so that the intraoperative operation is simple, and the postoperative inferior tibiofibular syndesmosis

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a detachable combined locking plate of a tibiofibular band loop plate. Background Art

[0002] At present, the steel plate combined with the tibiofibular strap loop plate is the lateral malleolus anatomical plate. The tibiofibular strap loop plate is usually placed on the side of the lateral malleolus anatomical plate away from the tibiofibular syndesmosis separation site. The tibiofibular strap loop plate must straddle the lateral malleolus anatomical plate when fixing the tibiofibular syndesmosis separation. When the lateral malleolus anatomical plate is removed for the second time, the tibiofibular strap loop plate must also be removed before the lateral malleolus anatomical plate can be removed, which makes the operation more cumbersome. In addition, if the tibiofibular strap loop is retained, it will help the stability of the tibiofibular syndesmosis to a certain extent.

[0003] In addition, when the tibiofibular syndesmosis is separated and the lateral malleolus is comminuted and displaced significantly, if the lateral malleolus fracture fragment is first reduced and fixed, the tibiofibular band loop cannot be fixed smoothly. At present, when the tibiofibular syndesmosis guide needle is inserted, the tibiofibular band loop plate lacks a guiding role, and the direction depends on the surgeon's experience and feel, which is not replicable for young doctors. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the utility model provides a detachable combined locking plate of the tibiofibular syndesmotic strap loop plate. When the lateral malleolus anatomical plate is removed for the second time, the tibiofibular syndesmotic strap loop plate does not need to be removed at the same time, and the tibiofibular syndesmotic strap loop plate has a guiding effect on inserting the tibiofibular syndesmotic guide needle.

[0005] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0006] A detachable joint locking plate with a tibiofibular syndesmotic plate comprises a lateral malleolus anatomical plate and a tibiofibular syndesmotic plate. The lateral malleolus anatomical plate is provided with a mounting hole for accommodating the tibiofibular syndesmotic plate. The mounting hole passes through the top and bottom surfaces of the lateral malleolus anatomical plate. The outer contour of the tibiofibular syndesmotic plate matches the mounting hole so that the lateral malleolus anatomical plate and the tibiofibular syndesmotic plate can be naturally separated when the lateral malleolus anatomical plate is removed.

[0007] Furthermore, the tibiofibular syndesmotic loop plate is assembled in the combining hole of the lateral malleolus anatomical plate for use, and the threading hole on the tibiofibular syndesmotic loop plate has the same inclination angle as the combining hole to provide guidance when inserting the tibiofibular syndesmotic guide needle during surgery.

[0008] Furthermore, the lateral malleolus anatomical plate is provided with a combining hole, which is formed by connecting a locking nail hole and an elliptical adjustment hole. The elliptical adjustment hole is the mounting hole. The tibiofibular syndesmotic loop steel plate is an inclined elliptical steel plate that matches the elliptical adjustment hole. The threading hole on the tibiofibular syndesmotic loop steel plate has the same inclination angle as the elliptical adjustment hole.

[0009] The utility model has the following beneficial effects:

[0010] A mounting hole matching the outer contour of the tibiofibular syndesmotic plate is provided on the lateral malleolus anatomical plate. The tibiofibular syndesmotic plate is assembled deep in the mounting hole near the tibiofibular syndesmotic separation site. When the lateral malleolus anatomical plate is removed for the second time, the tibiofibular syndesmotic plate does not need to be removed simultaneously, which simplifies the intraoperative operation and enhances the stability of the tibiofibular syndesmotic plate after surgery.

[0011] The tibiofibular syndesmotic loop plate is designed to match the combination hole, and the threading hole and the combination hole have the same inclination angle, so it can guide the insertion of the tibiofibular syndesmotic guide needle, with a certain degree of repeatability, simplifying the intraoperative guide needle insertion steps and improving accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 1 is a schematic structural diagram of a detachable combined locking plate of a tibiofibular strap loop plate according to an embodiment;

[0013] Figure 2 is along Figure 1 Sectional view of the mid-CC line;

[0014] Figure 3 is along Figure 1 Sectional view along the mid-DD line;

[0015] Figure 4 It is a top view of the tibiofibular strap plate;

[0016] Figure 5 is along Figure 4 Sectional view along line FF;

[0017] Figure 6 is along Figure 4 Cross-sectional view along line EE. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] like Figures 1 to 6As shown, a detachable combined locking plate of the tibiofibular syndesmotic plate loop comprises a lateral malleolus anatomical plate 1 and a tibiofibular syndesmotic plate loop 2. The lateral malleolus anatomical plate 1 is provided with a mounting hole for accommodating the tibiofibular syndesmotic plate loop 2. The mounting hole passes through the top and bottom surfaces of the lateral malleolus anatomical plate 1. The outer contour of the tibiofibular syndesmotic plate loop 2 matches the mounting hole so that the lateral malleolus anatomical plate 1 and the tibiofibular syndesmotic plate loop 2 can be naturally separated when the lateral malleolus anatomical plate 1 is removed. Different from the traditional scheme of assembling the tibiofibular syndesmotic plate 2 on the side of the lateral malleolus anatomical plate 1 away from the lateral malleolus bone (that is, the top of the lateral malleolus anatomical plate 1), the present scheme is to assemble the tibiofibular syndesmotic plate 2 deep in the mounting hole, that is, the tibiofibular syndesmotic plate 2 is close to the lateral malleolus bone. In this way, when the lateral malleolus anatomical plate 1 is removed in a second operation, the tibiofibular syndesmotic plate 2 has no effect on it, and only the lateral malleolus anatomical plate 1 can be removed, while the tibiofibular syndesmotic plate 2 is retained, thereby enhancing the stability of the tibiofibular syndesmotic plate.

[0021] Specifically, a mounting hole can be separately provided on the lateral malleolus anatomical plate 1 to accommodate the tibiofibular syndesmotic loop steel plate 2, or the mounting hole can be combined with an existing hole on a conventional lateral malleolus anatomical plate 1. The shape of the tibiofibular syndesmotic loop plate is explained in detail below by taking a combining hole 3 on the lateral malleolus anatomical plate 1 as an example.

[0022] As shown in the figure, the lateral malleolus anatomical plate 1 is provided with a plurality of coupling holes 3, a plurality of Kirschner wire holes and a plurality of pressure holes, wherein one coupling hole 3 is formed by connecting and combining a locking nail hole 4 and an elliptical adjustment hole 5, and the elliptical adjustment hole 5 is used as a mounting hole for accommodating the tibiofibular syndesmotic loop steel plate 2. Figure 2 and Figure 3 As shown, the tibiofibular joint loop steel plate 2 is an inclined elliptical steel plate that matches the elliptical adjustment hole 5, and its two side surfaces in the length direction are inclined surfaces (such as Figure 5 ), the threading hole 6 on the tibiofibular syndesmotic loop plate 2 has the same inclination angle as the elliptical adjustment hole 5 (the inclination angle is preferably 20°) to guide the insertion of the tibiofibular syndesmotic guide needle during surgery, thereby simplifying the steps of inserting the guide needle during surgery, improving accuracy, reducing dependence on the surgeon's experience and feel, and having repeatability.

[0023] The above provides a more preferred solution for the mounting hole. In other embodiments, the mounting hole can also be combined with a hole other than the elliptical adjustment hole 5. Accordingly, the outer contour shape of the tibiofibular syndesmotic loop steel plate also changes accordingly.

[0024] The embodiments described above are only used to illustrate the technical solutions of the present utility model, rather than to limit it. Although the present utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present utility model. Therefore, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present utility model.

Claims

1. A combined locking plate with a detachable tibiofibular strap loop, characterized in that: It includes a lateral malleolus anatomical plate and a tibiofibular syndesmotic loop steel plate. The lateral malleolus anatomical plate is provided with a mounting hole for accommodating the tibiofibular syndesmotic loop steel plate. The mounting hole runs through the top and bottom surfaces of the lateral malleolus anatomical plate. The outer contour of the tibiofibular syndesmotic loop steel plate matches the mounting hole so that the lateral malleolus anatomical plate and the tibiofibular syndesmotic loop steel plate can be naturally separated when the lateral malleolus anatomical plate is removed.

2. The detachable combined locking plate of the tibiofibular strap loop plate according to claim 1, characterized in that: The tibiofibular syndesmotic loop steel plate is assembled in the combination hole of the lateral malleolus anatomical plate for use, and the threading hole on the tibiofibular syndesmotic loop steel plate has the same inclination angle as the combination hole to provide guidance when inserting the tibiofibular syndesmotic guide needle during surgery.

3. The detachable combined locking plate of the tibiofibular strap loop plate according to claim 2, characterized in that: The lateral malleolus anatomical plate is provided with a combining hole, which is formed by connecting a locking nail hole and an elliptical adjustment hole. The elliptical adjustment hole is the mounting hole. The tibiofibular syndesmotic loop steel plate is an inclined elliptical steel plate matching the elliptical adjustment hole. The threading hole on the tibiofibular syndesmotic loop steel plate has the same inclination angle as the elliptical adjustment hole.

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