Superelastic syndesmotic ligament fixation device for the treatment of tibiofibular syndesmotic injuries

Abstract

The utility model relates to the technical field of medical devices, specifically to a superelastic syndesmotic ligament fixation device for treating tibiofibular joint injuries, comprising a traction needle, a traction line connected to the traction needle, a nickel-titanium implant and a fixation anchor, wherein the fixation anchor is located at one end of the nickel-titanium implant, the traction line is located at the other end of the nickel-titanium implant, and the traction needle is located at the other end of the traction line. The concept of screw fixation and the concept of elastic fixation are combined. The superelastic nickel-titanium syndesmotic ligament fixation system is a unique technology that can stabilize the joint with a consistent force and achieve rotational flexibility without generating displacement or creep, forming an elastic fixation that is converted into the original mechanical structure of the human body, combining the advantages of screws and elastic fixation, capable of strong fixation in the early stage, and capable of being converted into elastic fixation after healing, and easy to implant.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a superelastic syndesmotic ligament fixing device for treating tibiofibular syndesmotic injuries. Background Art

[0002] As we all know, the main technologies used to treat tibiofibular syndesmosis injuries are divided into the following categories: screw fixation, elastic fixation, and ligament reconstruction. Screw fixation has the risk of broken screws, and this type of fixation loses the relative movement between the tibia and fibula, which is contrary to the function of the human body itself. The connection method of using button plates and wire straps, although it simulates the original human anatomical structure to a certain extent, makes the operation difficult because the button plate also needs to be implanted on the opposite side. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the utility model provides a superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injuries.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injury, comprising a traction needle, a traction wire connected to the traction needle, a nickel-titanium implant and a fixing anchor, wherein the fixing anchor is located at one end of the nickel-titanium implant, the traction wire is located at the other end of the nickel-titanium implant, and the traction needle is located at the other end of the traction wire.

[0007] Furthermore, the present invention has the following improvements: the fixing anchor is fixed to one end of the nickel-titanium implant, the traction wire is fixed to the other end of the nickel-titanium implant, and the traction needle is fixed to the other end of the traction wire.

[0008] Furthermore, the improvement of the utility model is that the nickel-titanium implant is made of nickel-titanium alloy.

[0009] Furthermore, the improvement of the utility model is that the nickel-titanium implant is made of nickel-titanium alloy.

[0010] Furthermore, the present invention has been improved in that the nickel-titanium implant adopts an intermittent "mouth"-shaped hollow design, and when a certain tensile force is exceeded, the "mouth" shape can be deformed to achieve the purpose of extending or compressing the main body.

[0011] Furthermore, the present invention is improved in that the material of the fixing anchor is polyetheretherketone.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a superelastic joint ligament fixation device for treating tibiofibular joint injuries, which has the following beneficial effects:

[0014] The superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injuries combines the concepts of screw fixation and elastic fixation. The superelastic nickel-titanium syndesmotic ligament fixation system is a unique technology that can stabilize the joint with consistent force and achieve rotational flexibility without causing displacement or creep, forming an elastic fixation that is converted into the original mechanical structure of the human body. It combines the advantages of screw and elastic fixation, can provide strong fixation in the early stages, can be converted into elastic fixation after healing, and is easy to implant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a partial enlargement of the nickel-titanium implant in the utility model. Figure 1 ;

[0017] Figure 3 This is a partial enlargement of the nickel-titanium implant in the utility model. Figure 2 ;

[0018] Figure 4 This is a schematic diagram of the implantation of the nickel-titanium implant in the present invention;

[0019] Figure 5 It is a structural schematic diagram of the fixed anchor in the utility model;

[0020] In the figure: 1. traction needle; 2. traction wire; 3. nickel-titanium implant; 4. fixation anchor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 The utility model discloses a superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injury, comprising a traction needle 1, a traction wire 2 connected to the traction needle 1, a nickel-titanium implant 3 and a fixing anchor 4, wherein the fixing anchor 4 is located at one end of the nickel-titanium implant 3, the traction wire 2 is located at the other end of the nickel-titanium implant 3, and the traction needle 1 is located at the other end of the traction wire 2.

[0023] Furthermore, the fixing anchor 4 is fixed to one end of the nickel-titanium implant 3 , the traction wire 2 is fixed to the other end of the nickel-titanium implant 3 , and the traction needle 1 is fixed to the other end of the traction wire 2 .

[0024] Furthermore, the nickel-titanium implant 3 is made of nickel-titanium alloy, and the nickel-titanium fixing anchor 4 is made of polyetheretherketone.

[0025] The nickel-titanium implant 3 adopts an intermittent "mouth"-shaped hollow design. When a certain tensile force is exceeded, the "mouth" shape can be deformed to achieve the purpose of extending or compressing the main body.

[0026] Description of the operation and use process:

[0027] 1. Routine incision;

[0028] 2. Use ordinary bone screws at the fracture site to reduce the fracture;

[0029] 3. Use the fibula plate to strengthen fixation;

[0030] 4. Use a drill to drill holes in the fibula and tibia corresponding to the screw holes of the fibula plate;

[0031] 5. Introduce the nickel-titanium implant 3 into the bone tunnel hole through the traction needle 1 and the traction wire 2;

[0032] 6. Adjust to appropriate strength, install anchor 4, and cut off excess implant.

[0033] After surgery: The tibia and fibula can achieve their original physiological movement and bending.

[0034] Removal process:

[0035] 1. Routine incision;

[0036] 2. Remove the fixing anchor 4 on one side;

[0037] Remove the implant from the other side;

[0038] The implant shape is made of nickel-titanium alloy;

[0039] The fixing anchor 4 is prepared by using polyetheretherketone;

[0040] The fixing anchor 4 is mounted on the screw to produce a nickel-titanium implant 3 with a pre-set anchor on one side;

[0041] The Elastic Internal Fixation System is a nickel-titanium fixation device for the ankle syndesmosis that provides stability without excessive compression or loosening from cyclic loading. Nickel-titanium has a proven safety record in foot and ankle surgical repair and reconstruction implants. The use of nickel-titanium for the treatment of ankle syndesmosis injuries through this system is a novel innovation that offers significant advantages over existing screw or snap-in type fixation devices. The system provides significant syndesmotic stability while the elastic structural design also allows for more normal ankle biomechanics;

[0042] Combining the concepts of screw fixation and elastic fixation, the superelastic nickel-titanium joint ligament fixation system is a unique technology that can stabilize the joint with consistent force and achieve rotational flexibility without displacement or creep, forming an elastic fixation that is converted into the original mechanical structure of the human body. It combines the advantages of screw and elastic fixation, can provide strong fixation in the early stage, can be converted into elastic fixation after healing, and is easy to implant.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injury, characterized in that: The invention comprises a traction needle (1), a traction wire (2) connected to the traction needle (1), a nickel-titanium implant (3) and a fixing anchor (4), wherein the fixing anchor (4) is located at one end of the nickel-titanium implant (3), the traction wire (2) is located at the other end of the nickel-titanium implant (3), and the traction needle (1) is located at the other end of the traction wire (2).

2. The superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injury according to claim 1, characterized in that: The fixing anchor (4) is fixed to one end of the nickel-titanium implant (3), the traction wire (2) is fixed to the other end of the nickel-titanium implant (3), and the traction needle (1) is fixed to the other end of the traction wire (2).

3. The superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injury according to claim 2, characterized in that: The nickel-titanium implant (3) is made of nickel-titanium alloy.

4. The superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injury according to claim 3, characterized in that: The nickel-titanium implant (3) adopts an intermittent "mouth"-shaped hollow design. When a certain tensile force is exceeded, the "mouth" shape can be deformed to achieve the purpose of extending or compressing the main body.

5. The superelastic syndesmotic ligament fixation device for treating tibiofibular syndesmotic injury according to claim 3, characterized in that: The material of the fixing anchor (4) is polyetheretherketone.

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