Acromioclavicular joint ligament injury repairing device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an acromioclavicular joint ligament injury repairing device which comprises a shoe-shaped gold ingot anchoring plate, a tendon line and a button squeezing plate. The shoe-shaped gold ingot anchoring plate comprises an oval spherical arc-shaped plate, a limiting spherical semi-arc-shaped plate is arranged at the center of the inner arc surface of the oval spherical arc-shaped plate, a tendon line hole is formed in the limiting spherical semi-arc-shaped plate, the button squeezing plate comprises a disc hollow plate, a hollow round hole is formed in the center of the disc hollow plate, a basket rod is arranged in the hollow round hole, and the basket rod is connected with the limiting spherical semi-arc-shaped plate. The shoe-shaped gold ingot anchoring plate and the button squeezing plate are connected into a whole through the tendon line system, the problem that the shoe-shaped gold ingot anchoring plate and the button squeezing plate slide relative to the bone surface is solved, meanwhile, cutting abrasion of the tendon line is avoided, the service life of the device is greatly prolonged, the reliability of the device is improved, and postoperative recovery of a patient is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a device for repairing acromioclavicular joint ligament injury. Background Art

[0002] The looped plate is a specially designed orthopedic internal fixation device primarily used to treat and fixate the cruciate ligaments of the knee during cruciate ligament reconstruction. In recent years, its clinical application has expanded to the reconstruction of ligament injuries associated with acromioclavicular joint dislocations. Compared to clavicular hook plate fixation, the looped plate is less invasive and has fewer sequelae. It consists primarily of an upper plate, a lower plate, and a cable. During surgery, a bone tunnel is drilled through the bone spanning the joint. The cable is then secured within the connected tunnel. The plates are secured at both ends of the tunnel and tensioned by the cable.

[0003] Patent application number CN201520912365.1 discloses a steel plate with a loop, comprising an upper steel plate mounted on the upper part of the clavicle and a lower steel plate mounted on the lower part of the coracoid process. The lower steel plate is fixedly connected to a wire loop, the upper end of the wire loop is sleeved on the upper steel plate, and a washer is detachably provided between the upper steel plate and the clavicle, and the washer has a through hole for the wire loop to pass through. The device ensures good alignment of the acromioclavicular joint by adding a washer to the lower part of the upper steel plate, which is beneficial to the patient's recovery. However, the above device still has some problems. The upper steel plate, the lower steel plate and the washer are all flat straight plate designs. When fixing the joint, there is a situation where the upper steel plate, the lower steel plate and the outer surface of the bone slide relative to each other. The contact surface pressure is high, and displacement and bone surface settlement are easily generated, affecting postoperative recovery. In addition, the tendon line contacts the lower edge of the coracoid process bone tunnel, and the tendon line is easily cut and broken, making the entire steel plate with a loop fixation system ineffective. Moreover, the lower steel plate was not inserted through the bone tunnel, the surgical operation was complicated, and the soft tissue around the acromioclavicular joint incision was severely damaged. Utility Model Content

[0004] The present invention addresses the shortcomings of existing technologies and provides a device for repairing acromioclavicular joint ligament injuries. The device utilizes a bone tunnel to secure the coracoid process and clavicle while preventing the tendon line from contacting the lower edge of the coracoid process tunnel, thereby preventing tendon line cutting. This device effectively addresses the problems of existing technologies, facilitates surgical procedures, and reduces soft tissue damage around the acromioclavicular joint.

[0005] In order to achieve the above purpose, the specific technical solutions of the present utility model are as follows:

[0006] A device for repairing acromioclavicular joint ligament injury comprises a Yuanbao anchoring plate, a tendon line and a button extrusion plate, wherein the Yuanbao anchoring plate comprises an ellipsoidal arc plate, a limiting spherical semi-arc plate is provided at the center of the inner arc surface of the ellipsoidal arc plate, a tendon line hole is opened on the limiting spherical semi-arc plate, the button extrusion plate comprises a disc hollow plate, a hollow circular hole is opened at the center of the disc hollow plate, a basket carrying rod is provided in the hollow circular hole, the Yuanbao anchoring plate and the button extrusion plate are connected into a whole via the tendon line.

[0007] As a further feature of the above solution, a tendon line hole is provided at the center of the spherical semi-arc plate. The tendon line passes through the tendon line hole and is perpendicular to the ellipsoidal curved plate. The highest point of the spherical semi-arc plate is lower than the ends of the ellipsoidal curved plate on both sides of the ellipsoidal curved plate. The width of the spherical semi-arc plate is smaller than the width of the ellipsoidal curved plate.

[0008] As a further configuration of the above solution, the basket handle is horizontally fixedly connected in the hollow circular hole, and the outer edge of the disc hollow plate is provided with vertical symmetrical notches located in the vertical direction on both sides of the handle.

[0009] As a further arrangement of the above scheme, a fixed circular convex ring is provided on the lower end surface of the hollow plate of the disc, and the fixed circular convex ring is located at the lower end of the hollow circular hole. The inner wall diameter of the fixed circular convex ring is equal to the inner wall diameter of the hollow circular hole, and the outer wall diameter of the fixed circular convex ring is smaller than the diameter of the bone tunnel.

[0010] As a further configuration of the above solution, the tendon line is a flexible and inextensible tension line.

[0011] The utility model has the following beneficial effects:

[0012] 1. The design of the Yuanbao anchor plate facilitates its placement through the bone tunnel, avoiding exposure of the soft tissue surrounding the joint, minimizing surgical incision and reducing surgical damage. The spherical semi-arc plate helps limit the repeated sliding of the Yuanbao anchor plate around the bone tunnel port, preventing the tendon line from being cut or broken at the lower edge of the coracoid process.

[0013] 2. The design of the fixed convex ring on the button extrusion plate is conducive to squeezing and fixing the tendon line between the bone channel and the steel plate, preventing the relaxation of the tendon line and maintaining the tension of the tendon line. The symmetrical notch is conducive to preventing the slippage of the tendon line, facilitating the knotting of the tendon line, strengthening the prevention of tendon line relaxation and maintaining the tension of the tendon line.

[0014] This device solves the problem of relative sliding between the Yuanbao anchoring plate and button extrusion plate and the bone surface, avoids the cutting and wear of the tendon line, greatly extends the service life of the device, improves the reliability of the device, and inserts the Yuanbao anchoring plate through the bone tunnel, reducing surgical trauma and facilitating the patient's postoperative recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the usage of the utility model;

[0016] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0017] Figure 3 This is a schematic diagram of the Yuanbao anchor plate of the present utility model;

[0018] Figure 4 This is an axonometric diagram of a circular hollow plate of the present invention;

[0019] Figure 5 This is a bottom-up axonometric drawing of the circular hollow plate of the present invention.

[0020] 1. Coracoid process; 2. Clavicle; 3. Bone tunnel; 4. Yuanbao anchoring plate; 5. Tendon line; 6. Button extrusion plate; 401. Elliptical spherical arc plate; 402. Limiting spherical semi-arc plate; 403. Tendon line hole; 404. End of ellipsoidal arc plate; 601. Hollow disc plate; 6011. Symmetrical notch; 602. Hollow circular hole; 603. Basket handle; 604. Fixed circular convex ring. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Figures 1 to 5 , and describes the application in detail with reference to embodiments.

[0023] like Figures 1 to 5 As shown, this embodiment discloses a device for repairing acromioclavicular joint ligament injury, including a Yuanbao anchoring plate 4, a tendon line 5 and a button extrusion plate 6. The Yuanbao anchoring plate 4 includes an ellipsoidal arc plate 401, a limiting spherical semi-arc plate 402 is provided at the center of the inner arc surface of the ellipsoidal arc plate 401, and a tendon line hole 403 is opened on the limiting spherical semi-arc plate 402. The button extrusion plate 6 includes a disc hollow plate 601, a hollow circular hole 602 is opened at the center of the disc hollow plate 601, and a basket rod 603 is provided in the hollow circular hole 602. The Yuanbao anchoring plate 4 and the button extrusion plate 6 are connected into a whole through the tendon line 5, and the tendon line 5 is a flexible and inextensible tension line.

[0024] like Figure 3 As shown, a tendon line hole 403 is opened at the center of the limiting spherical semi-arc plate 402, and the tendon line 5 passes through the tendon line hole 403 and is perpendicular to the ellipsoidal arc plate 401. The highest point of the limiting spherical semi-arc plate 402 is lower than the ellipsoidal arc plate ends 404 on both sides of the ellipsoidal arc plate 401, and the diameter of the limiting spherical semi-arc plate 402 is smaller than the width of the limiting spherical semi-arc plate 401.

[0025] like Figure 4 、 Figure 5 As shown, the basket carrying rod 603 is horizontally fixedly connected in the hollow circular hole 602, and the outer edge of the disc hollow plate 601 is provided with vertical symmetrical notches 6011, which are located in the vertical direction on both sides of the carrying rail.

[0026] The lower end surface of the circular hollow plate 601 is provided with a fixed circular convex ring 604, which is located at the lower end of the hollow circular hole 602. The inner wall diameter of the fixed circular convex ring 604 is equal to the inner wall diameter of the hollow circular hole 602, and the outer wall diameter of the fixed circular convex ring 604 is equal to the diameter of the bone tunnel 3.

[0027] The present invention operates as follows: First, corresponding bone tunnels 3 are created in the coracoid process 1 and clavicle 2 through the acromioclavicular joint reduction and positioning guide. The Yuanbao anchoring plate, held by a plate holder, is inserted through the bone tunnel 3, from the clavicle 2 toward the coracoid process 1. Prior to insertion, the tendon cord 5 is threaded through the tendon cord holes 403 in the spherical semi-arc plate 402. The ends of the tendon cord 5 are then tightened and secured to the plate holder. The Yuanbao anchoring plate is placed under the coracoid process, the two ends of the tendon line fixed to the plate holder are loosened, the Yuanbao anchoring plate is squeezed and flipped, and the tendon line 5 passes upward through the hollow circular hole 602 from both sides of the basket rod 603. The tendon lines 5 are alternately connected to the basket rod 603, and then the ends of the tendon line 5 pass downward through the hollow circular hole 602. The ends of the tendon line 5 extend outward from the lower end surface of the disc hollow plate 601 and converge at the center of the upper end surface of the circular plate body 601 through the symmetrical notch 6011. The ends of the tendon line 5 are tightened to drive the Yuanbao anchoring plate 4 and the button squeezing plate 6 to approach each other to fix the dislocated clavicle 2. At this time, the inner arc surface of the ellipsoidal arc plate 404 is aligned with the bottom of the coracoid process 1. The bone surfaces are in contact, and the limiting spherical semi-arc plate 402 is located in the bone tunnel 3 on the coracoid process 1. The fixed circular convex ring 604 at the center of the lower end surface of the disc hollow plate 601 is knocked into the port of the bone tunnel 3 on the clavicle 2, which plays the role of squeezing and fixing the tendon line. At the same time, the lower end surface of the disc hollow plate 601 squeezes and fixes the tendon line 5, solving the sliding problem of the Yuanbao anchoring plate 4 and the button squeezing plate 6. The cable 5 is located in the middle position of the bone tunnel 3 under the action of the anchoring circular boss 402 and the fixing column 603, avoiding the contact between the tendon line 5 and the outer edge of the bone tunnel 3, thereby solving the problem of the tendon line 5 being cut and worn out by the outer edge of the bone tunnel 3. The ends of the tendon line 5 are knotted and locked for secondary fixation.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A device for repairing acromioclavicular joint ligament injury, comprising a Yuanbao anchoring plate, a tendon line and a button extrusion plate, characterized in that: The Yuanbao anchoring plate includes an elliptical spherical arc plate, a limiting spherical semi-arc plate is provided at the center of the inner arc surface of the elliptical spherical arc plate, and a tendon line hole is opened on the limiting spherical semi-arc plate. The button extrusion plate includes a disc hollow plate, a hollow circular hole is opened at the center of the disc hollow plate, and a basket rod is provided in the hollow circular hole. The Yuanbao anchoring plate and the button extrusion plate are connected into a whole via a tendon line.

2. The acromioclavicular joint ligament injury repair device according to claim 1, characterized in that: A tendon line hole is provided at the center of the limiting spherical semi-arc plate, and the tendon line passes through the tendon line hole and is perpendicular to the elliptical spherical arc plate. The highest point of the limiting spherical semi-arc plate is lower than the ends of the elliptical spherical arc plate on both sides of the elliptical spherical arc plate, and the width of the limiting spherical semi-arc plate is smaller than the width of the elliptical spherical arc plate.

3. The acromioclavicular joint ligament injury repair device according to claim 1, characterized in that: The basket carrying rod is fixedly connected in the hollow circular hole horizontally, and the outer edge of the disc hollow plate is provided with vertical symmetrical notches located in the vertical direction of both sides of the carrying railing.

4. The acromioclavicular joint ligament injury repair device according to claim 1, characterized in that: The lower end surface of the hollow plate of the disc is provided with a fixed circular convex ring, which is located at the lower end of the hollow circular hole. The inner wall diameter of the fixed circular convex ring is equal to the inner wall diameter of the hollow circular hole, and the outer wall diameter of the fixed circular convex ring is less than or equal to the diameter of the bone tunnel.

5. The acromioclavicular joint ligament injury repair device according to claim 1, characterized in that: The tendon line is a flexible and inextensible tension line.

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