Thread passing device for acromioclavicular joint dislocation fixation

Abstract

The utility model discloses a threading device for acromioclavicular dislocation fixation, which comprises a right-angle clamp, a guide sleeve and a lumbar puncture needle, the guide sleeve is mounted on a clamp handle of the right-angle clamp, an inner cavity of the guide sleeve is provided with a mounting groove along the length direction of the guide sleeve, the lumbar puncture needle can be inserted into the mounting groove, and a pull wire is arranged in an inner cavity of the lumbar puncture needle in a penetrating manner. One end, inserted into the guide sleeve, of the lumbar puncture needle is perpendicular to the right-angle forceps tip of the right-angle forceps, and the right-angle forceps tip of the right-angle forceps can clamp the traction line penetrating through the tip of the lumbar puncture needle and pull the traction line out under the action of external force. Then the traction line is used for guiding the line of the loop plate from the lower portion of the coracoid to the upper portion of the coracoid, the operation is completed, operation is easy and fast, and wounds of a patient can be reduced through small-diameter perforation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a wire-passing device for acromioclavicular joint dislocation fixation surgery. Background Technique

[0002] Patients with acromioclavicular joint dislocation have local pain, swelling and tenderness. It is difficult to abduct or lift the affected limb, and the forward flexion and backward extension movements are also limited, and the local pain is aggravated. During the examination, a depression can be felt at the acromioclavicular joint, and the acromioclavicular joint can be felt loose. The surgical recovery rate of acromioclavicular joint dislocation is relatively high.

[0003] In the surgical treatment of acromioclavicular joint dislocation, passing a wire under the coracoid process to reconstruct the coracoclavicular ligament is a commonly used treatment method. At present, in clinical practice, after the coracoid bone hole is drilled on the coracoid process and the coracoid process is exposed, passing a wire under the coracoid process is carried out under direct vision for the titanium plate to be directly inserted under the coracoid process from the coracoid bone hole. Generally, the diameter of the titanium plate is relatively large. Since the larger the diameter of the bone hole, it is easier to cause the titanium plate and the suture to cut the coracoid process in the later stage, and the risk of coracoid process re-fracture increases. Moreover, during the wire-passing process, the titanium plate may shift, resulting in wire-walking errors. Content of the Utility Model

[0004] The purpose of the utility model is to provide a wire-passing device for acromioclavicular joint dislocation fixation surgery to solve the technical problems in the existing devices.

[0005] To solve the above technical problems, the utility model specifically provides the following technical solution: A wire-passing device for acromioclavicular joint dislocation fixation surgery, including a right-angle forceps, a guiding sleeve and a lumbar puncture needle. The guiding sleeve is installed on the forceps handle of the right-angle forceps. An installation groove for inserting the lumbar puncture needle is provided in the inner cavity of the guiding sleeve along its own length direction. A traction wire is inserted through the inner cavity of the lumbar puncture needle;

[0006] One end of the lumbar puncture needle inserted into the guiding sleeve is perpendicular to the right-angle forceps tip of the right-angle forceps. Under the action of an external force, the right-angle forceps tip of the right-angle forceps can clamp and pull out the traction wire passing through the tip of the lumbar puncture needle.

[0007] As a preferred scheme of the utility model, a connection head is arranged at one end of the lumbar puncture needle far from the right-angle forceps tip of the right-angle forceps. An operation handle is arranged on the outer side wall of the connection head, and the diameter of the operation handle is larger than the diameter of the guiding sleeve.

[0008] As a preferred scheme of the utility model, it further includes an extension block. One end of the extension block is fixedly connected to the side wall of the right-angle forceps, and the other end is fixedly connected to the outer side wall of the guiding sleeve.

[0009] As a preferred scheme of the utility model, the traction wire is a nitinol wire.

[0010] As a preferred embodiment of the present utility model, anti-slip threads are provided on the inner side of the right-angle pliers tip of the right-angle pliers.

[0011] The present utility model has the following beneficial effects when compared with the prior art:

[0012] This wire-passing device only needs to drill a small-diameter bone hole in the coracoid process, and then the traction wire can be passed through the bone hole by the wire-passing device. Then, the wire of the loop plate can be guided from below the coracoid process to above the coracoid process by using the traction wire to complete the operation. The operation is simple and fast, and the small-diameter perforation can also reduce the trauma to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is the Figure 1 schematic diagram of the structure after the guiding sleeve is connected to the lumbar puncture needle in the present utility model;

[0016] The reference numerals in the drawings are respectively represented as follows:

[0017] 1, right-angle pliers; 2, guiding sleeve; 3, lumbar puncture needle; 4, installation groove; 5, traction wire; 6, connection head; 7, operation handle; 8, extension block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0019] As Figure 1-2 shown, a wire-passing device for a shoulder dislocation fixation operation includes a right-angle pliers 1, a guiding sleeve 2 and a lumbar puncture needle 3. The guiding sleeve 2 is installed on the pliers handle of the right-angle pliers 1. An installation groove 4 for inserting the lumbar puncture needle 3 is provided in the inner cavity of the guiding sleeve 2 along its own length direction. A traction wire 5 is passed through the inner cavity of the lumbar puncture needle 3;

[0020] The lumbar puncture needle 3 is inserted into one end of the guiding sleeve 2 perpendicular to the right-angle tip of the right-angle forceps 1. Under external force, the right-angle tip of the right-angle forceps 1 can clamp and pull out the traction wire 5 passing through the tip of the lumbar puncture needle 3.

[0021] Before using this device, a perforation needs to be made in advance on the coracoid process of the acromioclavicular joint. The diameter of this perforation mainly matches the insertion of the lumbar puncture needle. When in use, insert the right-angle forceps 1 into one side of the dislocated acromioclavicular joint, and place the right-angle tip of the right-angle forceps 1 below the perforation. During the placement of the right-angle forceps 1, the guiding sleeve 2 needs to be aligned above the perforation, and then insert the lumbar puncture needle 3 into the guiding sleeve 2 until the lumbar puncture needle 3 is close to the right-angle tip of the right-angle forceps 1. Finally, insert the traction wire 5 into the lumbar puncture needle 3 until the inserted length of the traction wire 5 is greater than the length of the lumbar puncture needle 3. At this time, pull out the lumbar puncture needle 3 from the guiding sleeve 2. After pulling out the lumbar puncture needle 3, manually operate the right-angle forceps 1, and clamp the traction wire 5 with the right-angle tip of the right-angle forceps 1. Since the traction wire 5 is connected to the wire of the button-loop plate, the traction wire 5 can pass through the coracoid process and be clamped and pulled by the right-angle tip of the right-angle forceps 1, and the wire of the button-loop plate can be pulled from the coracoid process through the coracoid bone tunnel to above the coracoid process.

[0022] This wire-passing device only needs to make a small-diameter bone hole in the coracoid process, and then the traction wire can be passed through the bone hole by the wire-passing device first, and then the wire of the loop plate can be guided from below the coracoid process to above the coracoid process by using the traction wire to complete the operation. The operation is simple and fast, and the small-diameter perforation can also reduce the trauma to the patient.

[0023] Among them, the lumbar puncture needle can just reach between the jaws of the right-angle forceps through the sleeve direction. The traction wire has both rigidity and flexibility. When the lumbar puncture needle reaches between the forceps, place the titanium-nickel wire into the lumbar puncture needle, and then withdraw the lumbar puncture needle, clamp the right-angle forceps, and the titanium-nickel wire can be clamped. The titanium-nickel wire passing from above the coracoid process through the bone hole to below the coracoid process can be guided to above the coracoid process through the side of the coracoid process to achieve the purpose of leading the wire.

[0024] Anti-slip threads are provided on the inner side of the right-angle tip of the right-angle forceps 1. Since the anti-slip threads are in contact with the traction wire 5, and the anti-slip threads are rough contact surfaces, the friction coefficient can be increased when in contact with the traction wire, thus avoiding the possibility of the right-angle forceps 1 slipping when pulling the traction wire.

[0025] Specifically, as Figure 1-2 shown, the traction wire is a titanium-nickel wire. Since the titanium-nickel wire has both rigidity and flexibility, it is convenient for the traction wire 5 to pass through the perforation, and at the same time, it will not be broken during the pulling process.

[0026] Among them, the diameter of the traction wire is 0.2 mm. The length of the tip of the L-shaped right-angle forceps is 2 cm.

[0027] Specifically, as Figure 1-2As shown, a connector 6 is provided at one end of the lumbar puncture needle 3 away from the right-angle tip of the right-angle forceps 1. An operating handle 7 is provided on the outer sidewall of the connector 6, and the diameter of the operating handle 7 is greater than the diameter of the guiding sleeve 2.

[0028] Such a setting can facilitate the insertion of the lumbar puncture needle 3 on the one hand, and on the other hand, the operating handle 7 can also limit the length of the lumbar puncture needle 3 inserted into the guiding sleeve 2, avoiding the possibility that the lumbar puncture needle 3 directly touches the right-angle forceps 1.

[0029] Furthermore, as Figure 1-2 shown, the diameter of the lumbar puncture needle 3 is 1.26 mm and the length is 8 cm. Such a diameter and length are just suitable for passing through a bone hole with a small diameter.

[0030] Since the lumbar puncture needle 3 needs to be aligned with the tip of the right-angle forceps 1 when passing through the guiding sleeve 2, therefore, the guiding sleeve 2 needs to extend a certain distance from the sidewall of the right-angle forceps 1.

[0031] Specifically, as Figure 1-2 shown, it further includes an extension block 8. One end of the extension block 8 is fixedly connected to the sidewall of the right-angle forceps 1, and the other end is fixedly connected to the outer sidewall of the guiding sleeve 2.

[0032] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A thread-passing device for acromioclavicular joint dislocation fixation, characterized in that It includes a right-angle clamp (1), a guiding sleeve (2) and a lumbar puncture needle (3). The guiding sleeve (2) is installed on the handle of the right-angle clamp (1). An installation groove (4) for inserting the lumbar puncture needle (3) is provided in the inner cavity of the guiding sleeve (2) along its own length direction. A traction wire (5) is inserted through the inner cavity of the lumbar puncture needle (3). One end of the lumbar puncture needle (3) inserted into the guiding sleeve (2) is perpendicular to the tip of the right-angle clamp of the right-angle clamp (1). Under the action of an external force, the tip of the right-angle clamp of the right-angle clamp (1) can clamp and pull out the traction wire (5) passing through the tip of the lumbar puncture needle (3).

2. The wire-passing device for acromioclavicular joint dislocation fixation according to claim 1, wherein A connecting head (6) is provided at one end of the lumbar puncture needle (3) away from the tip of the right-angle clamp of the right-angle clamp (1). An operating handle (7) is provided on the outer side wall of the connecting head (6). The diameter of the operating handle (7) is larger than the diameter of the guiding sleeve (2).

3. The wire-passing device for acromioclavicular joint dislocation fixation according to claim 1, wherein It further includes an extension block (8). One end of the extension block (8) is fixedly connected to the side wall of the right-angle clamp (1), and the other end is fixedly connected to the outer side wall of the guiding sleeve (2).

4. The wire-passing device for acromioclavicular joint dislocation fixation according to claim 1, wherein The traction wire is a nitinol wire.

5. The wire-passing device for acromioclavicular joint dislocation fixation according to claim 1, wherein Anti-slip threads are provided on the inner side of the tip of the right-angle clamp of the right-angle clamp (1).

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