Ankle joint peripheral ligament repair and fixation nail

Abstract

The present invention relates to an ankle ligament repair and fixation nail, and its innovation lies in: including a suture shuttle and an expansion wing. One end of the suture shuttle is provided with a threading and fixing hole, and a card slot is provided on the outer peripheral wall of the suture shuttle. The inner wall of the expansion wing is provided with a limiting step, and a threading hole communicating with its inner cavity is provided at the end of the expansion wing. The suture shuttle is clamped inside the expansion wing through an opening at one end of the expansion wing, and the limiting step of the expansion wing is clamped in the card slot of the suture shuttle. The present invention is not only convenient to operate, but also can be quickly and conveniently locked and is not easy to fall off.

Description

Technical Field

[0001] The present invention relates to a fixing nail, and particularly to a fixing nail for repairing and fixing ligaments around the ankle joint, belonging to the technical field of medical devices. Background Art

[0002] Ankle sprains are the most common injuries in sports activities. Although nearly 80% of ankle sprains can fully recover, 20% of the sprains still present mechanical or functional instability and result in chronic ankle instability disorders. Chronic ankle instability can cause persistent pain, reduced recreational activities, and may lead to early degenerative changes in the ankle. Most ankle injuries involve the lateral ankle ligament complex, which includes the anterior talofibular ligament (ATFL), the calcaneofibular ligament (CFL), and the posterior talofibular ligament (PTFL). Lateral ligament injuries are mostly caused by external forces leading to plantar flexion and ankle varus due to unstable body center of gravity. The ATFL is the weakest part of the lateral ankle ligaments; thus, it is often torn. In fact, in multiple ankle sprain surgeries, two-thirds of the cases are ATFL tears, and one-third involve combined tears of the ATFL and CFL. Taking the rupture of the anterior talofibular ligament (ATFL) as an example, the fixing nail in the prior art is a screw-type structure. A hole is pre-drilled in the fibula to provide an access channel for the fixing nail, and then the screw-type fixing nail is implanted through the access channel. The fixing nail is fixed by using the threads on the outer peripheral wall of the fixing nail in combination with the fibula. The rope on the fixing nail is knotted with the ruptured anterior talofibular ligament to complete the repair of the anterior talofibular ligament. This screw-type fixing nail only relies on its own threads to combine with the fibula. Due to the small contact area between the two, the gripping force of the fixing nail is also limited. During the patient's recovery process, it is easy for the fixing nail to be insecurely fixed and there is a risk of falling off. Summary of the Invention

[0003] The object of the present invention is to provide a fixing nail for repairing and fixing ligaments around the ankle joint that is not only convenient to operate but also can be quickly and conveniently locked and is not easily detached.

[0004] To achieve the above object, the technical solution of the present invention is: a fixing nail for repairing and fixing ligaments around the ankle joint, the innovation of which lies in: including a suture shuttle and an expansion wing. One end of the suture shuttle is provided with a thread-passing fixing hole, and a card slot is provided on the outer peripheral wall of the suture shuttle. A limiting step is provided on the inner wall of the expansion wing, and a thread-passing hole communicating with its inner cavity is provided at the end of the expansion wing. The suture shuttle is clamped inside the expansion wing after the opening at one end of the expansion wing is expanded, and the limiting step of the expansion wing is clamped in the card slot of the suture shuttle.

[0005] In the above technical solution, the suture shuttle includes a thread-hooking part, an expanding part, and a guiding part that are integrally connected. The thread-hooking part has a thread-passing fixing hole, and a clamping groove is provided on the outer peripheral wall of the thread-hooking part. The expanding part and the guiding part of the suture shuttle are clamped inside the expanding wing, and the thread-hooking part is located at the opening at one end of the expanding wing.

[0006] In the above technical solution, the expanding wing includes a connecting part, and wing edges that are integrally connected to the connecting part and are in an eight-shaped state after expansion. The connecting part has a thread-passing hole communicating with the inner cavity of the expanding wing. A limiting step is provided on the inner wall of the wing edge. The wing edges in an eight-shaped state clamp the outer periphery of the suture shuttle, and the limiting step on the wing edge is clamped in the clamping groove of the suture shuttle to prevent the axial movement of the suture shuttle.

[0007] In the above technical solution, the thread-hooking part of the suture shuttle is in a hemispherical shape, the expanding part is in a conical shape, the guiding part is in a cylindrical shape, and an arc-shaped protrusion is provided at one end of the guiding part.

[0008] In the above technical solution, the inner part of the expanding wing has a waist-reducing hole and a guiding and positioning hole that communicate with each other. The expanding part of the suture shuttle is clamped in the waist-reducing hole, and the guiding part of the suture shuttle is clamped in the guiding and positioning hole.

[0009] In the above technical solution, the expanding wing includes a connecting part, and wing edges that are integrally connected to the connecting part and are in an eight-shaped state after expansion. A guiding surface for facilitating the entry of the suture shuttle into its inner cavity is provided at the free end of the wing edge.

[0010] The positive effect of the present invention is that after using the ankle joint peripheral ligament repair and fixation nail of the present invention, since the present invention includes a suture shuttle and an expanding wing, one end of the suture shuttle is provided with a thread-passing fixing hole, and a clamping groove is provided on the outer peripheral wall of the suture shuttle. A limiting step is provided on the inner wall of the expanding wing, and a thread-passing hole communicating with its inner cavity is provided at the end of the expanding wing. The suture shuttle is clamped inside the expanding wing after being expanded through the opening at one end of the expanding wing, and the limiting step of the expanding wing is clamped in the clamping groove of the suture shuttle.

[0011] During use, place the patient in the supine position, make a longitudinal incision centered on the distal fibula, then cut across the fibula forward to establish an access channel for the ligament repair fixation nail. Pre-implant a suture shuttle into the access channel established on the fibula. Then, insert the expansion wing through the same access channel. The rope (plastic ligament) on the suture shuttle is led out through the threading hole of the expansion wing by a special threading tool. By pulling the rope, the suture shuttle enters through one end opening of the expansion wing, and the one end opening of the expansion wing is in an expanded state. Under the continuous pulling of the rope, the suture shuttle slowly enters the inner cavity of the expansion wing through the opening until the limiting step of the expansion wing is caught in the card slot of the suture shuttle, completing the limiting of the suture shuttle. Finally, tie the rope (plastic ligament) to the ruptured anterior talofibular ligament as a whole. After the repair surgery, since one end opening of the expansion wing always remains in an expanded state, it not only increases the contact surface with the fibula but also strengthens the bonding force between the expansion wing and the fibula, ensuring the firmness of the repair fixation nail and making it not easy to fall off, and will not cause secondary injury to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of a specific embodiment of the present invention;

[0013] Figure 2 is Figure 1 a schematic structural diagram of the suture shuttle in

[0014] Figure 3 is Figure 1 a state diagram of the expansion wing before expansion in

[0015] Figure 4 is Figure 1 a schematic state diagram after the expansion wing and the suture shuttle are assembled in

[0016] Figure 5 is a three-dimensional structural diagram of the present invention;

[0017] Figure 6 is a usage state diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and the given embodiments, but it is not limited thereto.

[0019] As Figure 1 、 2As shown in Figures 3, 4, 5, and 6, an ankle ligament repair and fixation nail includes a suture shuttle 1 and an expansion wing 2. One end of the suture shuttle 1 is provided with a threading and fixing hole 11, and a card slot 12 is provided on the outer peripheral wall of the suture shuttle 1. A limiting step 21 is provided on the inner wall of the expansion wing 2, and a threading hole 26 communicating with its inner cavity is provided at the end of the expansion wing 2. The suture shuttle 1 is clamped inside the expansion wing 2 after the opening at one end of the expansion wing 2 is expanded, and the limiting step 21 of the expansion wing is clamped in the card slot 12 of the suture shuttle 1.

[0020] As Figure 2 , 5 shown, in order to facilitate the entry and clamping of the suture shuttle 1 into the expansion wing 2 when the opening at one end of the expansion wing 2 is expanded, the suture shuttle 1 includes a thread-hooking part 13, an expansion part 14, and a guiding part 15 connected as a whole. The thread-hooking part 13 has a threading and fixing hole 11, and a card slot 12 is provided on the outer peripheral wall of the thread-hooking part 13. The expansion part 14 and the guiding part 15 of the suture shuttle 1 are clamped inside the expansion wing 2, and the thread-hooking part 13 is located at the opening at one end of the expansion wing 2.

[0021] As Figure 3 , 4 shown, in order to ensure that the suture shuttle 1 can be firmly held in the expansion wing 2 and is not easily detached from the inside of the expansion wing 2, the expansion wing 2 includes a connecting part 22 and wing edges 23 connected to the connecting part 22 as a whole and in an eight-shaped state after expansion. The connecting part 22 has a threading hole 26 communicating with the inner cavity of the expansion wing 2. A limiting step 21 is provided on the inner wall of the wing edge 23. The wing edges 23 in an eight-shaped state hold the outer periphery of the suture shuttle 1, and the limiting step 21 on the wing edge 23 is clamped in the card slot 12 of the suture shuttle 1 to prevent the axial movement of the suture shuttle 1.

[0022] As Figure 2 shown, in order to improve the structural rationality of the present invention and ensure the firmness of the combination between the suture shuttle and the expansion wing, the thread-hooking part 13 of the suture shuttle 1 is in a hemispherical shape, the expansion part 14 is in a conical shape, the guiding part 15 is in a cylindrical shape, and an arc-shaped protrusion 151 is provided at the end of one end of the guiding part 15. The outer surface of the arc-shaped protrusion 151 is arc-shaped, which is also for facilitating the entry of the suture shuttle 1 into the expansion wing 2 conveniently and smoothly during the subsequent surgical operation.

[0023] As Figure 1 shown, in order to ensure that the expansion wing 2 can firmly hold the suture shuttle 1, the expansion wing 2 has a waist-reducing hole 24 and a guiding and positioning hole 25 that communicate with each other inside. The expansion part 14 of the suture shuttle 1 is clamped in the waist-reducing hole 24, and the guiding part 15 of the suture shuttle 1 is clamped in the guiding and positioning hole 25.

[0024] As Figure 3 ,4 As shown, in order to facilitate the suture shuttle 1 to enter the interior of the expansion wing 2 and guide it, the expansion wing 2 includes a connecting portion 22 and wing edges 23 that are integrally connected to the connecting portion 22 and are in a V-shape after expansion. A guiding surface 27 for facilitating the entry of the suture shuttle 1 is provided at the free end of the wing edge 23.

[0025] As Figure 6 shown, the working principle of the present invention: Place the patient in the supine position, make a longitudinal incision centered on the distal fibula, and then cut forward across the fibula to establish an access channel for the ligament repair fixation nail.

[0026] Pre-implant the suture shuttle 1 into the access channel established on the fibula 3. Then, insert the expansion wing 2 into the access channel as well. The rope 4 (plastic ligament) on the suture shuttle 1 is led out from the threading hole 27 of the expansion wing 2 through a special threading tool. By pulling the rope 4, under the guiding action of the guiding surface 27 of the expansion wing 2, the guiding portion 15 of the suture shuttle 1 causes the wing edge 23 of the expansion wing 2 to expand. Then, the suture shuttle 1 enters the inner cavity of the expansion wing 1 through the expanded wing edge 23. Continue to pull the rope 4. Under the pulling action of the rope 4, the guiding portion 15 of the suture shuttle 1 enters the guiding positioning hole 25, and the expansion portion 14 of the suture shuttle 1 is clamped in the waist-reduction hole 24 until the limiting step 21 on the wing edge 23 of the expansion wing 2 is clamped in the card slot 12 of the wire-hooking portion 13 of the suture shuttle 1 to prevent the axial movement of the suture shuttle 1, completing the limitation of the suture shuttle 1. Finally, tie the rope 4 to the ruptured anterior talofibular ligament and suture the incision, and finally complete the repair operation.

[0027] Since one end opening of the expansion wing 2 of the repair fixation nail of the present invention always remains in an expanded state after fixation, that is, the wing edge 23 is in a V-shape after expansion, it not only increases the contact surface with the fibula but also strengthens the bonding force between the expansion wing and the fibula, ensuring the firm fixation of the repair fixation nail, not easily falling off, and not causing secondary injury to the patient.

[0028] Inspired by the ideal embodiments of the present invention described above, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An ankle ligament repair and fixation nail, characterized in that: It includes a thread sewing shuttle (1) and an expansion wing (2). The thread sewing shuttle (1) includes a thread hooking part (13), an expansion part (14) and a guiding part (15) which are integrally connected. The thread hooking part (13) has a thread passing and fixing hole (11), and a clamping groove (12) is arranged on the outer peripheral wall of the thread hooking part (13). The expansion part (14) and the guiding part (15) of the thread sewing shuttle (1) are clamped inside the expansion wing (2), and the thread hooking part (13) is located at the opening at one end of the expansion wing (2). The expansion wing (2) includes a connecting part (22), and wing edges (23) which are integrally connected with the connecting part (22) and are in a flared shape after expansion. The connecting part (22) has a thread passing hole (26) communicated with the inner cavity of the expansion wing (2). A limiting step (21) is arranged on the inner wall of the wing edge (23). The wing edges (23) in a flared shape are clamped around the outer periphery of the thread sewing shuttle (1), and the limiting step (21) on the wing edge (23) is clamped in the clamping groove (12) of the thread sewing shuttle (1) to prevent the thread sewing shuttle (1) from axially moving. The thread hooking part (13) of the thread sewing shuttle (1) is in a hemispherical shape, the expansion part (14) is in a conical shape, the guiding part (15) is in a cylindrical shape, and an arc-shaped protrusion (151) is arranged at one end of the guiding part (15). The inner part of the expansion wing (2) has a waist-shaped hole (24) and a guiding and positioning hole (25) which are mutually communicated. The expansion part (14) of the thread sewing shuttle (1) is clamped in the waist-shaped hole (24), and the guiding part (15) of the thread sewing shuttle (1) is clamped in the guiding and positioning hole (25).

2. The ankle ligament repair and fixation nail according to claim 1, wherein: A guiding surface (27) is arranged at the free end of the wing edge (23) to facilitate the thread sewing shuttle (1) to enter its inner cavity.

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