A t-shaped steel plate for correcting flat feet

Abstract

The utility model belongs to orthopedics medical instrument technical field, especially relate to a T type steel sheet for correcting flat foot, include: main stem department, the plate -shaped structure of longitudinal extension is equipped with a plurality of first locking hole for with the calcaneus fixed on its surface, the head department of transverse extension is connected perpendicularly with the main stem department and forms T type, the head department is away from the one end of main stem department and forms the eversion department bending away from the calcaneus side, be equipped with at least two second locking hole on the eversion department, the second locking hole is along the head department length direction setting. The utility model's T type steel sheet simple structure can be well with the correction part of flat foot, and the fixed effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of orthopedic medical device technology, and specifically relates to a T-shaped steel plate for correcting flat feet. Background Technology

[0002] Flat feet (also known as pes planus) is a common foot deformity characterized by a collapsed arch and the medial side of the foot contacting the ground, often accompanied by foot pain, fatigue, and gait abnormalities. Its causes include congenital structural abnormalities, ligament laxity, trauma, or degenerative changes. Correction methods include conservative treatment and surgical correction. Conservative treatments (such as orthotic insoles and physical therapy) cannot fundamentally cure flat feet; surgical correction involves implanting a metal plate to provide mechanical support and reshape the arch. However, in reality, foot orthotic plates are mainly used for correcting other parts of the foot, not specifically for flat feet. Therefore, existing foot orthotic plates do not fit the corrective areas for flat feet very well. Summary of the Invention

[0003] The purpose of this invention is to provide a T-shaped steel plate for correcting flat feet. It has a simple structure, can fit well into the correction area of ​​flat feet, and has a good fixation effect.

[0004] The technical solution provided by this utility model is:

[0005] A T-shaped steel plate for correcting flat feet, comprising:

[0006] The main trunk is a longitudinally extending plate-like structure with multiple first locking holes on its surface for fixation to the calcaneus.

[0007] The head extends laterally and is perpendicularly connected to the main trunk to form a T-shape. The connection area between the head and the main trunk is coplanar. The end of the head away from the main trunk bends away from the calcaneus to form an everted part. The everted part has a slope, and the slope forms a 135° angle with the main trunk.

[0008] The bottom surface of the outward-turned part is flush with the bottom surface of the T-shaped steel plate, and the end face of the outward-turned part away from the main body is perpendicular to the bottom surface of the T-shaped steel plate.

[0009] The inclined surface is provided with at least two second locking holes that penetrate the everted portion and intersect the inclined surface at an angle, and the second locking holes are arranged diverging towards the calcaneus and along the length direction of the head.

[0010] Preferably, there are two second locking holes.

[0011] As a more preferred embodiment, the central axes of the two second locking holes intersect on the extension lines of the side away from the calcaneus, with an intersection angle α of 15°.

[0012] As a better option, the outer edges of the two second locking holes at the ends away from the main body are rounded.

[0013] Preferably, the height H of the everted portion is 1 cm.

[0014] Preferably, the first locking hole is provided along the length direction of the main body.

[0015] More preferably, the number of the first locking holes is two.

[0016] Preferably, the corner where the main body and the head are connected is designed with a smooth transition.

[0017] Preferably, the main body and the head are integrally formed.

[0018] The beneficial effects of this utility model of a T-shaped steel plate for correcting flat feet are: the T-shaped steel plate has a simple structure, can fit well into the correction area of ​​flat feet, and has a good fixing effect. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the T-shaped steel plate of this utility model;

[0020] Figure 2 This is the front view of the T-shaped steel plate of this utility model;

[0021] Figure 3 for Figure 2 Top view;

[0022] Figure 4 for Figure 2 Side view;

[0023] Figure 5 This is a diagram showing the usage state of the T-shaped steel plate of this utility model;

[0024] In the diagram, 4 represents a T-shaped steel plate, 1 represents the main body, and 11 represents the first locking hole.

[0025] 2-Head, 21-Second locking hole, 22-Outwardly turned part, 221-Top surface, 222-Beveled surface, 223-Outer edge surface;

[0026] 3-Calbital bone, 31-Posterior segment of calbital bone, 32-Anterior segment of calbital bone. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the T-shaped steel plate of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. The terms "lateral," "medial," and "posterior" for the calcaneus region are defined according to human anatomy. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit this utility model.

[0028] like Figure 1 As shown, the T-shaped steel plate 4 for correcting flat feet provided by this utility model is integrally formed from the main body 1 and the head 2, and is made of pure titanium, or titanium alloy.

[0029] like Figures 2-5 As shown, the main trunk 1 has a longitudinally extending plate-like structure with two first locking holes 11 evenly distributed along its length for fixed connection with the posterior calcaneus 31.

[0030] The head 2, extending laterally, connects perpendicularly to the main shaft 1 to form a T-shaped main structure, and their connection area is coplanar. The corner where the main shaft 1 and head 2 connect is smoothly transitioned by a rounded arc, reducing stress concentration at the connection point. To adapt the T-shaped steel plate to the position of the severed calcaneus 3, the end of the head 2 furthest from the main shaft 1 is designated as an everted portion 22. The everted portion 22 bends away from the calcaneus 3, with a height H of 1 cm. The everted portion 22 has a slope 222, forming a 135° angle with the main shaft 1. The bottom surface of the everted portion 22 is flush with the bottom surface of the T-shaped steel plate 4, where the bottom surface of the T-shaped steel plate 4 is the side that contacts the calcaneus. The end face of the everted portion 22 furthest from the main shaft 1 (i.e., the end face of the T-shaped steel plate 4) is flush with the bottom surface of the T-shaped steel plate 4. Figure 4 The top surface 221 is perpendicular to the bottom surface of the T-shaped steel plate. At least two second locking holes 21 are provided on the inclined surface 222, intersecting the inclined surface 222 at an angle. The second locking holes 21 penetrate the everted portion 22 for fixed connection between the everted portion 22 and the anterior calcaneus 32. The second locking holes 21 are arranged divergently from the inclined surface 222 to the bottom surface of the everted portion 22 (i.e., towards the calcaneus), and are arranged along the length of the head 2. The divergent arrangement of the second locking holes 21 towards the calcaneus ensures that screws inserted into each hole do not interfere with each other. In this embodiment, the everted portion 22 has two second locking holes 21, whose central axes intersect on the extension lines away from the calcaneus, with an intersection angle α = 15° (see...). Figure 3 The central axes of the two second locking holes 21 are arranged in a trumpet shape and together with the first locking hole 11 of the main shaft 1, they form a spatial triangular layout; when the screw is inserted, a triangular mechanical support structure is formed, which effectively resists the torsional force and displacement tendency of the osteotomy site.

[0031] An outer edge surface 223 (i.e., the outer edge of the two second locking holes 21 away from the main trunk 1) is formed between the end face 221 and the inclined surface 222, parallel to the central axis of the second locking hole 21. The outer edge surface 223 is designed to be smooth, so that the edge of the outer edge surface 223 forms a wave shape. This smooth design allows the T-shaped steel plate to fit with the misaligned calcaneus to form a low notch. The low notch can reduce the irritation of the steel plate to the soft tissue.

[0032] This utility model takes the surgical procedure of implanting a T-shaped steel plate into the right foot as an example. The specific operation is as follows:

[0033] (1) Adopt the lateral or supine position and make a longitudinal oblique incision along the lateral border of the calcaneus 3 to expose the lateral wall of the calcaneus 3.

[0034] (2) Cut the bone downward to the posterior wall of the calcaneus 3, so that the calcaneus 3 is divided into two parts: the posterior calcaneus 31 and the anterior calcaneus 32. Move the posterior calcaneus 31 medially by 1 cm.

[0035] (3) Place the T-shaped steel plate on the outside of the calcaneus 3. The bottom surface of the T-shaped steel plate is in contact with the posterior segment of the calcaneus 31, and the top surface 221 is in contact with the cross section of the anterior segment of the calcaneus 32. Make the outer edge 223 of the everted part 22 basically flush with the anterior segment of the calcaneus 32. Then, use Kirschner wires to temporarily fix the T-shaped steel plate, and then use a drilling guide to drill screw holes on the calcaneus 3.

[0036] (4) Insert screws into the first locking hole and the second locking hole. For example... Figure 5 As shown, this is the final state of the T-shaped steel plate after it has been implanted into the human body.

[0037] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A T-shaped steel plate for correcting flat feet, characterized in that, include: The main trunk (1) has a longitudinally extending plate-like structure, and its surface is provided with multiple first locking holes (11) for fixing to the calcaneus. The head (2) extends laterally and is vertically connected to the main trunk (1) to form a T-shape. The connection area between the head (2) and the main trunk (1) is coplanar. The end of the head (2) away from the main trunk (1) is bent away from the calcaneus (3) to form an everted part (22). The everted part (22) is provided with a slope (222). The slope (222) forms a 135° angle with the main trunk (1). The bottom surface of the outward-turned part (22) is flush with the bottom surface of the T-shaped steel plate (4), and the end face of the outward-turned part (22) away from the main body (1) is perpendicular to the bottom surface of the T-shaped steel plate (4); The inclined surface (222) is provided with at least two second locking holes (21) that penetrate the everted portion (22) and intersect the inclined surface (222) at an inclination. The second locking holes (21) are arranged diverging towards the calcaneus and are arranged along the length of the head (2).

2. The T-shaped steel plate according to claim 1, characterized in that, The number of the second locking holes is two.

3. The T-shaped steel plate according to claim 2, characterized in that, The central axes of the two second locking holes intersect on the extension of the side away from the calcaneus, with an intersection angle α of 15°.

4. The T-shaped steel plate according to claim 2, characterized in that, The outer edges of the two second locking holes at the ends away from the main stem are rounded.

5. The T-shaped steel plate according to claim 1, characterized in that, The height H of the everted portion is 1 cm.

6. The T-shaped steel plate according to claim 1, characterized in that, The first locking hole is provided along the length direction of the main body.

7. The T-shaped steel plate according to claim 6, characterized in that, The number of the first locking holes is two.

8. The T-shaped steel plate according to claim 1, characterized in that, The connection corner between the main body and the head features a smooth transition design.

9. The T-shaped steel plate according to claim 1, characterized in that, The main body and the head are integrally formed.

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