Auxiliary tool for embedding loop steel plate

Abstract

The invention relates to the technical field of medical instruments, in particular to a loop steel plate imbedding auxiliary tool, which is used for assisting in fixing a clavicle tunnel established by a kirschner wire and a hollow drill bit and assisting in guiding a line on a loop steel plate to pass through the bone tunnel, and comprises a hollow circular tube, a lead and a steel wire, a tail ring is arranged at one end of the lead and used for being connected with a line on the loop steel plate, a tail hook is arranged at the tail end of the steel wire, the steel wire penetrates into the hollow pipe and is connected with the tail ring through the tail hook, and the lead is pulled out through the clavicle tunnel. The auxiliary tool for implanting the loop steel plate solves the difficulty of minimally invasive implantation of the loop steel plate, obtains a satisfactory minimally invasive effect, can achieve the treatment effect of minimally invasive implantation of the loop steel plate without using an arthroscope, can also achieve the effects of saving time, labor and cost, and is easy to popularize and apply.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an auxiliary tool for inserting a loop steel plate. Background Technology

[0002] The most common surgical methods for treating acromioclavicular joint dislocation include autologous tendon grafting to reconstruct the coracoclavicular ligament and acromioclavicular joint ligament, and reconstruction using biomaterials. Endobutton loop plate fixation and reconstruction for acromioclavicular joint dislocation was first reported and confirmed by Struhl and Wolfson. In recent years, the biomaterial TightRope loop plate has been widely used clinically, as it is a material capable of withstanding the same forces as the natural coracoclavicular ligament. Related studies have found that TightRope loop plates, using biosynthetic graft materials, have superior mechanical strength compared to autologous tendons, and the acromioclavicular joint TightRope loop plate offers reliable fixation while preserving acromioclavicular joint micromovement. In recent years, with the continuous improvement of various surgical techniques, the method of treating acromioclavicular joint dislocation with loop plates under total shoulder arthroscopy is considered to have higher safety and effectiveness than traditional surgical methods.

[0003] The two types of plate loops mentioned above are currently widely used. Surgical placement of plate loops primarily involves open and closed methods. Open plate loop placement surgery is more invasive, involves more bleeding, and has a higher risk of infection. Furthermore, the large incision results in noticeable scarring, affecting aesthetics. Therefore, arthroscopic placement is now more commonly used. However, many hospitals still do not offer arthroscopic techniques, or many doctors lack the necessary skills. While arthroscopic plate loop placement involves smaller incisions, it requires more incisions, takes longer, and incurs higher costs for patients. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a loop plate placement auxiliary tool that can quickly insert a loop plate without arthroscopy.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A loop plate insertion auxiliary tool is used to assist in fixing a Kirschner wire and a hollow drill bit to establish a clavicle bone tunnel and to assist in guiding a wire on the loop plate through the bone tunnel. The tool includes a hollow tube, a lead wire, and a steel wire. The outer diameter of the hollow tube is smaller than the diameter of the hollow drill bit. One end of the lead wire has a tail loop for connecting to the wire on the loop plate. The tail end of the steel wire has a tail hook. The steel wire passes through the hollow tube and connects to the tail loop via the tail hook, pulling the lead wire out through the clavicle bone tunnel.

[0007] Furthermore, the hollow tube includes an outer hollow tube, the inner diameter of which is larger than the diameter of the Kirschner wire.

[0008] Furthermore, the outer diameter of the hollow tube is 3.8-4.2 mm, the inner diameter is 2.6-3.2 mm, and the length is 15-25 cm.

[0009] Furthermore, the hollow tube also includes an inner hollow circular tube, the outer diameter of which is smaller than the inner diameter of the outer hollow circular tube, and the length of which is greater than or equal to the length of the outer hollow circular tube. When the length of the inner hollow circular tube is greater than that of the outer hollow circular tube, it is easier to replace the hollow tube.

[0010] Furthermore, the outer diameter of the hollow circular tube is 2.5-3 mm, and the inner diameter is 0.6-1 mm.

[0011] Furthermore, the diameter of the steel wire is 0.5-0.8 mm, and the length of the steel wire is 30-60 cm.

[0012] Furthermore, the length of the lead wire is 30-60cm.

[0013] Furthermore, it also includes a tool box, which has a fixing groove for storing hollow round tubes, steel wires and leads.

[0014] As can be seen from the above description, the loop plate placement auxiliary tool provided by the present invention solves the difficulties of minimally invasive loop plate placement and achieves satisfactory minimally invasive results. That is, it can achieve the therapeutic effect of minimally invasive loop plate placement without the use of arthroscopy, and can also achieve the effects of saving time, effort and cost, and is easy to promote and apply. Attached Figure Description

[0015] Figure 1 A schematic diagram of inserting auxiliary tools into the loop steel plate.

[0016] Figure 2 A schematic diagram of a toolbox for inserting auxiliary tools into the steel loop plate.

[0017] Figure 3 This is a schematic diagram of inserting an outer hollow tube into an inner hollow tube.

[0018] Figure 4 This is a schematic diagram of the "drop-out technique" using a loop steel plate insertion auxiliary tool.

[0019] Figure 5 This is a schematic diagram showing the connection between the tail hook of the steel wire and the loop of the lead wire.

[0020] In the diagram: 1. Outer hollow tube; 2. Inner hollow tube; 3. Steel wire; 31. Tail hook; 4. Lead wire; 41. Tail ring; 5. Tool box; 51. Fixing groove. Detailed Implementation

[0021] The present invention will be further described below through specific embodiments.

[0022] Reference Figure 1 As shown, the auxiliary tool for inserting a loop steel plate according to the present invention includes an outer hollow round tube (1), an inner hollow round tube (2), a steel wire (3), and a lead wire (4).

[0023] The outer hollow tube (1) is used to assist in fixing the clavicle bone tunnel established by a 2.5mm Kirschner wire and a 4.5mm hollow drill bit, thereby maintaining the direction and position of the clavicle and coracoid process tunnel unchanged; and the outer diameter of the outer hollow tube is 4mm, the inner diameter is 3mm, the wall thickness is 0.5mm, and the length is 20cm.

[0024] The inner hollow tube (2) can enter the outer hollow tube (1). The outer diameter of the inner hollow tube (2) is 2.8 mm, the inner diameter is 1 mm, and the wall thickness is 0.9 mm. Using an inner hollow tube (2) that is smaller than the outer hollow tube (1) can effectively reduce damage to the surrounding soft tissue when clamping, and it is easier to clamp the wire (3) with straight pliers.

[0025] The steel wire (3) has a diameter of 0.5 mm and a length of 30 cm. A hook (31) is provided at the end of the steel wire (3) to hook the lead wire (4) and guide it through the bone tunnel. The steel wire (3) is inserted into the inner hollow tube (2). A pair of pliers probes and clamps the inner hollow tube (2), and slowly withdraws from the inner hollow tube (2) using a "dropping technique," thereby clamping the steel wire (3) and pulling it out of the skin. The "dropping technique" in this application refers to judging the holding status of the steel wire through the feeling of drop during hand operation, without relying on vision.

[0026] The lead wire (4) is 40cm long and is used to guide the wire on the loop plate out of the bone tunnel. The end of the lead wire (4) is equipped with a tail loop (41). The tail hook (31) at the end of the wire (3) hooks the tail loop (41) and then the wire (3) is removed, so that the lead wire (4) is led out through the bone tunnel. After the wire (3) is removed, the tail loop (41) of the lead wire (4) is connected to the wire on the loop plate to guide it out through the bone tunnel.

[0027] Reference Figure 2 As shown, the auxiliary tool also includes a tool box (5), which has a fixing groove (51) for storing the outer hollow tube (1), the inner hollow tube (2), the steel wire (3), and the lead wire (4). The tool box (5) consists of a four-piece set for storing the outer hollow tube (1), the inner hollow tube (2), the steel wire (3), and the lead wire (4), and is for single use after disinfection.

[0028] Reference Figures 3 to 5As shown, a minimally invasive closed reduction and internal fixation procedure for acromioclavicular joint dislocation was performed using a loop plate placement auxiliary tool as described in the invention. The entire procedure was completed under C-arm assisted imaging, and the process is as follows:

[0029] The acromioclavicular joint was closed and reduced, and a 2.5mm Kirschner wire was drilled and fixed. Preoperative X-ray was used to locate the entry point of the Kirschner wire in the clavicle and the target coracoid process to determine the insertion position and direction of the Kirschner wire. A 5ml syringe needle was used to locate the anterior and posterior edges of the clavicle. A 1cm incision was made, and a 2.5mm Kirschner wire was inserted into the center of the plane of the clavicle. The wire was inserted into the surface of the coracoid process along the pre-defined direction. The coracoid process was fluoroscopically viewed in anteroposterior and oblique views to confirm the accuracy of the direction of the Kirschner wire. The wire was then further adjusted to the appropriate position and passed through the coracoid process.

[0030] After enlarging the tunnel with a 4.5mm hollow drill, pull out the hollow drill, insert the outer hollow tube (1) into the Kirschner wire, and then pull out the Kirschner wire.

[0031] After inserting the inner hollow tube (2) into the outer hollow tube (1), pull out the outer hollow tube (1) and check the position through C-arm fluoroscopy. After the position is correct, insert the steel wire (3) through the inner hollow tube (2) to the predetermined length.

[0032] Based on the C-arm fluoroscopy, determine the position of the beak and make a 1 cm incision. Use a large curved blunt dissection to separate to the underside of the beak. Use straight forceps to probe and clamp the inner hollow tube (2). While holding the steel wire (3), slowly withdraw the inner hollow tube (2) until you feel a sense of emptiness. Then clamp the steel wire (3) and try to pull the steel wire (3) in the opposite direction. If the steel wire (3) does not move, it means that the steel wire (3) has been clamped accurately.

[0033] Remove the inner hollow tube (2), use the tail hook (31) to loop the tail loop (41) of the lead wire (4), clamp the steel wire (3) and pull it out of the skin, so that the lead wire (4) is led out through the bone tunnel. Then use the tail loop (41) of the lead wire (4) to tie the wire on the loop plate, and pull the other end of the lead wire (4) to lead the wire on the loop plate out along the bone tunnel;

[0034] Pull out the lead wire (4), and by pulling the wire on the loop plate, guide the straight loop plate in the loop plate along the bone tunnel to the clavicle, and make the quincunx-shaped loop plate in the loop plate reach the position below the coracoid process. After the C-arm fluoroscopy confirms that the loop plate is in the correct position at the coracoid process, check the position of the acromioclavicular joint with fluoroscopy, tighten the wire on the loop plate and tie a knot.

[0035] The final fluoroscopic examination showed that all areas were in good condition, and each of the two minor incisions was sutured with one stitch.

[0036] The above are merely some specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A loop plate insertion auxiliary tool for assisting in fixing Kirschner wires and hollow drill bits to establish a clavicle bone tunnel and for assisting in guiding the sutures on the loop plate through the bone tunnel, characterized in that: It includes a hollow round tube, a lead wire, and a steel wire. The outer diameter of the hollow round tube is smaller than the diameter of the hollow drill bit. One end of the lead wire is provided with a tail loop for connecting to the wire on the loop steel plate. The tail end of the steel wire is provided with a tail hook. The steel wire is inserted into the hollow tube and connected to the tail loop through the tail hook, and the lead wire is pulled out through the clavicle tunnel.

2. The auxiliary tool for inserting the loop steel plate according to claim 1, characterized in that: The hollow tube includes an outer hollow tube, the inner diameter of which is larger than the diameter of the Kirschner wire.

3. The auxiliary tool for inserting the loop steel plate according to claim 2, characterized in that: The outer diameter of the hollow tube is 3.8-4.2 mm, the inner diameter is 2.6-3.2 mm, and the length is 15-25 cm.

4. The auxiliary tool for inserting the loop steel plate according to claim 2, characterized in that: The hollow tube also includes an inner hollow circular tube, the outer diameter of which is smaller than the inner diameter of the outer hollow circular tube, and the length of which is greater than or equal to the length of the outer hollow circular tube.

5. The auxiliary tool for inserting the loop steel plate according to claim 4, characterized in that: The outer diameter of the hollow circular tube is 2.5-3 mm, and the inner diameter is 0.6-1 mm.

6. The auxiliary tool for inserting the loop steel plate according to claim 1, characterized in that: The diameter of the steel wire is 0.5-0.8 mm, and the length of the steel wire is 30-60 cm.

7. The auxiliary tool for inserting the loop steel plate according to claim 1, characterized in that: The length of the lead wire is 30-60cm.

8. The auxiliary tool for inserting the loop steel plate according to claim 1, characterized in that: It also includes a toolbox, which has a fixing groove for storing hollow round tubes, steel wires and leads.

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