Anchoring system for temporal-mandibular joint disc reduction anchoring operation

Abstract

The utility model discloses an anchoring system for a temporomandibular joint disc reduction anchoring operation, which comprises a suture line anchored on a joint disc, an anchoring sheet for quickly anchoring the suture line and the joint disc, and a positioning nail for positioning the suture line, the suture line is arranged on the inner side of the joint disc, the anchoring piece is assembled in the middle of the suture line and arranged on the inner side of the joint disc, the positioning nail is assembled on the suture line, and the positioning nail and the anchoring piece are arranged at intervals. In the operation process, the suture line and the joint disc can be connected without the operation of threading and line pulling, the operation requirement for an operator is low, the operation time is effectively shortened, and extra operation wounds caused to a patient are avoided; the anchoring force and stability of the positioning nail can be effectively improved, the falling phenomenon of the positioning nail is avoided, and the anchoring effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an anchoring system for temporomandibular joint disc repositioning and anchoring. Background Technology

[0002] Temporomandibular joint disorder (TMD) is a common and frequently occurring disease in clinical practice. Based on its pathological progression, it can be divided into several stages, including reducible and irreducible disc displacement. Irreversible anterior disc displacement is the middle to late stage, often characterized by pain in the temporomandibular joint area / masculine muscles, joint clicking or noise, abnormal mandibular movement, and limited mouth opening, severely impacting the patient's quality of life. Disc repositioning and anchoring is one of the important treatment methods for irreducible anterior disc displacement. It restores normal joint function by surgically repositioning the disc-condyle relationship. Traditional anchoring uses titanium screws with sutures, approximately one-sixth of the screw's length at both ends of which is specially treated with medical-grade adhesive to harden and facilitate the insertion of sutures during surgery. During articular disc suturing and fixation, a 12-gauge arthroscopic suture needle is inserted into the superior articular cavity. The needle is inserted into the disc at the junction of the posterior band of the articular disc and the double-plate area, dividing the disc into thirds from the outer to the inner third. The needle then exits at the junction of the middle and inner thirds. The surgeon then inserts the suture needle and a loop through the anterior wall of the external auditory canal, adjusts the position of the needle tip and the loop, inserts the suture into the 12-gauge suture needle, passes the tip through the loop, rotates the loop 90°, tightens the suture, and pulls it out of the external auditory canal. This procedure requires a high degree of coordination between the surgeon and the operator. The insertion of the suture needle and the looped needle's placement and extraction of the suture are the fastest steps in the procedure and are prone to failure due to improper suture insertion or inadequate needle coordination. This can lead to wasted suture, prolonged surgery time, and additional surgical trauma to the patient. This surgical method is difficult to perform and not suitable for beginners.

[0003] Chinese invention patent application number 202311176342.4 discloses a drilling guide device for temporomandibular joint disc repositioning and anchoring surgery, comprising: an upper mounting tube with a first handle fixed to its side wall; a lower mounting tube with a second handle fixed to its side wall parallel to the first handle, the second handle being connected to the first handle via a clamping member; and a drilling guide sleeve installed inside the upper mounting tube, the inner diameter of the drilling guide sleeve being larger than the diameter of the drill bit. However, this drilling guide device for temporomandibular joint disc repositioning and anchoring surgery has a relatively complex structure. Although it can prevent drilling deviation, it still requires suture threading and pulling during the operation, placing extremely high demands on the operator's skills, resulting in a longer operation time and potentially causing additional surgical trauma to the patient. Furthermore, it uses a conventional titanium screw structure for anchoring, which has poor anchoring force and may result in the titanium screw falling out. Utility Model Content

[0004] The purpose of this invention is to provide an anchoring system for temporomandibular joint disc repositioning and anchoring.

[0005] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0006] An anchoring system for temporomandibular joint disc repositioning and anchoring includes a suture anchored to the joint disc, an anchoring plate for quickly anchoring the suture to the joint disc, and a positioning pin for positioning the suture. The anchoring plate is fitted in the middle of the suture and arranged on the inner side of the joint disc, and the positioning pin is fitted on the suture and spaced apart from the anchoring plate.

[0007] The anchor plate includes a fitting portion and a tension portion. The fitting portion is located on the side of the anchor plate near the joint disc, and the tension portion is located on the side of the anchor plate away from the fitting portion. The tension portion and the fitting portion are integrally formed.

[0008] The fitting part is configured as a planar structure and is fitted to the articulated disc. The tension part is configured as an arc-shaped structure with rounded end structures at both ends. The tension part and the fitting part together form an arc-shaped spindle structure.

[0009] It also includes a receiving groove and a thread passage hole. The receiving groove is located in the middle of the tension part and is configured as a strip-shaped groove structure. There are two sets of thread passage holes. The two sets of thread passage holes are arranged corresponding to the receiving groove and pass through the anchor plate. The two sets of thread passage holes are arranged side by side at intervals and communicate with the receiving groove. The anchor plate is assembled on the stitching line through the two sets of thread passage holes.

[0010] The positioning nail includes a titanium nail shell, an mounting plate, and a rivet core. The titanium nail shell is configured as a conical titanium nail structure with a piercing end and an installation end at its two ends, respectively. The interior of the titanium nail shell is a hollow structure with external threads on its outer side. The mounting plate is disposed at the installation end of the titanium nail shell and is integrally formed with the titanium nail shell. The rivet core is disposed on the inner side of the titanium nail shell and is inserted into the titanium nail shell.

[0011] It also includes guide protrusions, guide openings, and deformation plates. The guide protrusions are disposed inside the puncture end of the titanium nail shell and are integrally formed with the titanium nail shell. There are two sets of guide openings, which are symmetrically arranged on both sides of the puncture end of the titanium nail shell and penetrate the titanium nail shell, corresponding to the guide protrusions. There are two sets of deformation plates, which are symmetrically arranged at one end of the rivet core near the puncture end of the titanium nail shell and are integrally formed with the rivet core. The two sets of deformation plates are located at the two sets of guide openings.

[0012] The guide protrusion is configured as an arc-shaped conical protrusion structure, and the two sets of deformation plates are located on both sides of the guide protrusion.

[0013] The end of the deformable piece away from the rivet core is configured as a spike-like structure, and a gap is left between the two sets of deformable pieces.

[0014] It also includes an installation end and a connecting end. The installation end is located at the end of the rivet core away from the deformable piece and is fixedly connected to the rivet core. The installation end is located on the side of the mounting piece away from the titanium nail shell. The connecting end is located on the side of the installation end away from the rivet core and is fixedly connected to the installation end. The connecting end has a connecting hole in the middle, and the suture is bolted to the connecting end through the connecting hole.

[0015] The rivet core is configured as a conical nail-shaped structure corresponding to the titanium nail shell.

[0016] The beneficial effects of this utility model are:

[0017] With a simple structure and anchoring plates, the sutures can be quickly anchored to the articular disc. During the operation, there is no need to thread or pull the sutures to connect them to the articular disc. This reduces the skill requirements for the operator, effectively shortens the operation time, and avoids additional surgical trauma to the patient. It also features positioning pins with a double-layer self-locking titanium pin structure, which can effectively improve the anchoring force and stability of the positioning pins, prevent them from falling off, and ensure the anchoring effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the anchor plate structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection between the wire hole and the anchor plate of this utility model;

[0021] Figure 4 This is a cross-sectional view of the positioning pin structure of this utility model.

[0022] In the diagram: 1. Thread; 2. Adhesive part; 3. Tension part; 4. Receiving groove; 5. Thread hole; 6. Titanium nail shell; 7. Mounting piece; 8. Rivet core; 9. Guide protrusion; 10. Guide opening; 11. Deformation piece; 12. Mounting end; 13. Connecting end. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] An anchoring system for temporomandibular joint disc reduction and anchoring includes a suture 1 anchored to the joint disc, an anchoring plate for rapid anchoring of the suture 1 to the joint disc, and positioning pins for positioning the suture 1. The anchoring plate is fitted in the middle of the suture 1 and positioned on the inner side of the joint disc, and the positioning pins are fitted on the suture 1 and spaced apart from the anchoring plate. A schematic diagram of the overall structure of this invention is shown below. Figure 1 As shown.

[0025] The anchoring plate includes a fitting portion 2 and a tension portion 3. The fitting portion 2 is located on the side of the anchoring plate near the articular disc, and the tension portion 3 is located on the side of the anchoring plate away from the fitting portion 2. The tension portion 3 and the fitting portion 2 are integrally formed. The fitting portion 2 is a planar structure and fits snugly against the articular disc. The tension portion 3 is an arc-shaped structure with rounded ends. The tension portion 3 and the fitting portion 2 together form an arc-shaped spindle structure. The anchoring plate, through the cooperation of the fitting portion 2 and the tension portion 3, forms a spindle-shaped anchoring structure to quickly anchor the suture 1 onto the articular disc. The fitting portion 2 serves as the fitting structure on the anchoring plate to fit against the articular disc, and the tension portion 3 serves as the force-bearing part on the anchoring plate, thereby providing installation support for the suture 1. A schematic diagram of the anchoring plate structure of this utility model is shown below. Figure 2 As shown.

[0026] It also includes a receiving groove 4 and thread-passing holes 5. The receiving groove 4 is located in the middle of the tension part 3 and is a strip-shaped groove structure. There are two sets of thread-passing holes 5, which are arranged corresponding to the receiving groove 4 and pass through the anchor plate. The two sets of thread-passing holes 5 are arranged side by side at intervals and communicate with the receiving groove 4. The anchor plate is assembled onto the suture 1 through the two sets of thread-passing holes 5. The receiving groove 4 is used to accommodate the part where the suture 1 connects to the anchor plate, and the thread-passing holes 5 are used to meet the connection requirements between the suture 1 and the anchor plate. The schematic diagram of the cooperation between the thread-passing hole 5 and the anchor plate of this utility model is shown below. Figure 3 As shown.

[0027] The positioning pin includes a titanium nail shell 6, an mounting plate 7, and a rivet core 8. The titanium nail shell 6 is a conical titanium nail structure with a piercing end and an installation end at its two ends, respectively. The interior of the titanium nail shell 6 is hollow, and its exterior is threaded. The mounting plate 7 is located at the installation end of the titanium nail shell 6 and is integrally formed with the titanium nail shell 6. The rivet core 8 is located on the inner side of the titanium nail shell 6 and is inserted into the titanium nail shell 6. The positioning pin, through the cooperation of the titanium nail shell 6, the mounting plate 7, and the rivet core 8, forms a double-layer self-locking titanium nail structure. The titanium nail shell 6 provides installation support for the mounting plate 7, and the mounting plate 7 serves as an installation limiting structure at the end of the titanium nail shell 6. The rivet core 8, together with the titanium nail shell 6, forms a double-layer self-locking titanium nail structure, thereby effectively improving the anchoring force of the positioning pin and preventing it from falling off. A cross-sectional view of the positioning pin structure of this utility model is shown below. Figure 4 As shown.

[0028] It also includes guide protrusions 9, guide openings 10, and deformation plates 11. The guide protrusions 9 are located inside the piercing end of the titanium nail shell 6 and are integrally formed with the titanium nail shell 6. There are two sets of guide openings 10, which are symmetrically arranged on both sides of the piercing end of the titanium nail shell 6 corresponding to the guide protrusions 9 and penetrate the titanium nail shell 6. There are two sets of deformation plates 11, which are symmetrically arranged at one end of the rivet core 8 near the piercing end of the titanium nail shell 6 and are integrally formed with the rivet core 8. The two sets of deformation plates 11 are located at the two sets of guide openings 10. The guide protrusions 9 are set as arc-shaped conical protrusion structures and the two sets of deformation plates 11 are respectively located at the two sets of guide openings 10. On both sides of the guide protrusion 9, the end of the deformation piece 11 away from the rivet core 8 is set as a spike-like structure and a gap is left between the two sets of deformation pieces 11. The guide protrusion 9 is used as a guide structure inside the puncture end of the titanium nail shell 6, thereby providing deformation guidance for the deformation piece 11. The guide opening 10 is used as an opening structure on the side of the puncture end of the titanium nail shell 6, thereby meeting the deformation requirements of the deformation piece 11 extending out of the titanium nail shell 6. The deformation piece 11 is used as a deformation structure at the tip of the rivet core 8, so that when anchoring, it extends out of the titanium nail shell 6 along the guide protrusion 9 through the guide opening 10 and pierces into the bone to achieve the anchoring of the positioning nail.

[0029] It also includes an installation end 12 and a connecting end 13. The installation end 12 is located at the end of the rivet core 8 away from the deformable piece 11 and is fixedly connected to the rivet core 8. The installation end 12 is located on the side of the mounting piece 7 away from the titanium nail shell 6. The connecting end 13 is located on the side of the installation end 12 away from the rivet core 8 and is fixedly connected to the installation end 12. The connecting end 13 has a connecting hole in the middle. The suture 1 is bolted to the connecting end 13 through the connecting hole. The installation end 12 is used as an installation structure at the end of the rivet core 8, thereby providing installation support for the connecting end 13. The connecting end 13 is used as a connecting structure on the rivet core 8, thereby cooperating with the suture 1 to realize the connection between the suture 1 and the positioning nail.

[0030] The rivet core 8 is configured as a conical nail structure corresponding to the titanium nail shell 6. The degree of fit between the rivet core 8 and the titanium nail shell 6 can be changed by the relative expansion and contraction between them, so that the deformable piece 11 can extend or retract through the guide opening 10 under the action of the guide protrusion 9.

[0031] When the positioning pin is in the assembled state, the deformation piece 11 is located inside the titanium pin shell 6 and is arranged corresponding to the guide protrusion 9. The working principle of the positioning pin is similar to that of the self-locking screw in the prior art.

[0032] The rivet core 8 can be set to hollow or solid according to actual usage requirements. Hollow rivet core 8 meets the anchoring requirements while reducing its own weight, making it lightweight. Solid rivet core 8 can enhance its own strength and make it durable.

[0033] Working principle:

[0034] When a temporomandibular joint disc repositioning and anchoring procedure is required, the anchor piece is first attached to the suture 1 through the suture hole 5. Then, the anchor piece with the suture 1 attached is inserted into the needle tip of the suture needle. The needle tip is inserted into and through the joint disc, and the push rod of the suture needle is pushed to push the anchor piece with the suture 1 into the inner side of the joint disc. Finally, the needle tip is withdrawn from the joint disc, leaving the anchor piece on the inner side of the joint disc with its adhering part 2 adhering to the inner surface of the joint disc. This achieves the anchoring between the suture 1 and the joint disc. Multiple anchor plates are anchored to the articular disc according to the actual situation. The anchor plates can be anchored deep into the articular disc. After the anchor plates are connected to the articular disc, the suture 1 is connected to the positioning nail through the connecting end 13, and the positioning nail is drilled into the temporomandibular bone. The anchoring process of the positioning nail is as follows: First, the titanium nail shell 6 is drilled into the designated position of the bone. Then, the rivet core 8 is pressed, so that the deformable piece 11 extends out of the titanium nail shell 6 along the guide protrusion 9 through the guide opening 10 and pierces into the bone to achieve the anchoring of the positioning nail. The temporomandibular joint disc repositioning and anchoring surgery can be completed.

[0035] The advantages of this invention are its simple structure, the presence of an anchoring plate that allows for quick anchoring of the suture to the articular disc, eliminating the need for threading and pulling during surgery, thus reducing the skill requirements for operators, effectively shortening surgical time, and avoiding additional surgical trauma to the patient. It also features a positioning pin with a double-layer self-locking titanium nail structure, which effectively enhances the anchoring force and stability of the positioning pin, preventing it from falling off and ensuring the anchoring effect.

[0036] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. An anchoring system for temporomandibular joint disc reduction anchoring, comprising a suture (1) anchored on the disc, characterized in that, It also includes an anchoring piece for quickly anchoring the suture line (1) with the articular disc and a positioning nail for positioning the suture line (1), the anchoring piece is assembled in the middle of the suture line (1) and arranged on the inner side of the articular disc, and the positioning nail is assembled on the suture line (1) and arranged in space with the anchoring piece.

2. The anchoring system for disc repositioning in the temporomandibular joint according to claim 1, characterized in that, The anchoring piece includes a fitting part (2) and a tension part (3), the fitting part (2) is arranged on the side of the anchoring piece close to the articular disc, and the tension part (3) is arranged on the side of the anchoring piece away from the fitting part (2), and the tension part (3) is integrally formed with the fitting part (2).

3. An anchoring system for disc replacement surgery of the temporomandibular joint according to claim 2, characterized in that The fitting part (2) is arranged in a plane structure and arranged in close contact with the articular disc, and the tension part (3) is arranged in an arc structure, and both ends of the tension part (3) are arranged in a circular arc structure, and the tension part (3) and the fitting part (2) jointly form an arc-shaped shuttle structure.

4. The anchoring system for disc repositioning in the temporomandibular joint according to claim 3, characterized in that, It also includes a containing groove (4) and a wire passing hole (5), the containing groove (4) is arranged in the middle of the tension part (3), and the containing groove (4) is arranged in a strip-shaped groove structure, and the wire passing hole (5) is provided with two groups, and the two groups of wire passing holes (5) are arranged corresponding to the containing groove (4) and penetrate through the anchoring piece, and the two groups of wire passing holes (5) are arranged in parallel and in space and are communicated with the containing groove (4), and the anchoring piece is assembled on the suture line (1) through the two groups of wire passing holes (5).

5. An anchoring system for disc replacement surgery of the temporomandibular joint according to claim 4, characterized in that The positioning nail includes a titanium nail shell (6), a mounting piece (7) and a rivet core (8), the titanium nail shell (6) is arranged in a tapered titanium nail structure, and both ends of the titanium nail shell (6) are respectively a puncture end and a mounting end, the inside of the titanium nail shell (6) is a hollow structure, and the outside of the titanium nail shell (6) is provided with external threads, the mounting piece (7) is arranged on the mounting end of the titanium nail shell (6) and integrally formed with the titanium nail shell (6), and the rivet core (8) is arranged on the inside of the titanium nail shell (6) and inserted with the titanium nail shell (6).

6. An anchoring system for disc replacement surgery of the temporomandibular joint according to claim 5, characterized in that It also includes a guide protrusion (9), a guide opening (10) and a deformation piece (11), the guide protrusion (9) is arranged inside the puncture end of the titanium nail shell (6) and integrally formed with the titanium nail shell (6), the guide opening (10) is provided with two groups, the two groups of guide openings (10) are symmetrically arranged on both sides of the puncture end of the titanium nail shell (6) corresponding to the guide protrusion (9) and penetrate through the titanium nail shell (6), and the deformation piece (11) is provided with two groups, the two groups of deformation pieces (11) are symmetrically arranged on one end of the rivet core (8) close to the puncture end of the titanium nail shell (6) and integrally formed with the rivet core (8), and the two groups of deformation pieces (11) are located at the two groups of guide openings (10).

7. An anchoring system for disc replacement surgery of the temporomandibular joint according to claim 6, characterized in that The guide protrusion (9) is arranged in an arc-shaped tapered protrusion structure, and the two groups of deformation pieces (11) are respectively located on both sides of the guide protrusion (9).

8. An anchoring system for disc replacement surgery of the temporomandibular joint according to claim 7, characterized in that The end of the deformation piece (11) away from the rivet core (8) is arranged in a thorn-like structure, and a space is left between the two groups of deformation pieces (11).

9. An anchoring system for disc replacement surgery of the temporomandibular joint according to claim 8, characterized in that Also include installation end (12) and connecting end (13), the installation end (12) is arranged at one end of the rivet core (8) away from the deformation sheet (11) and is fixedly connected with the rivet core (8), the installation end (12) is located at one side of the installation sheet (7) away from the titanium nail shell (6), the connecting end (13) is arranged at one side of the installation end (12) away from the rivet core (8) and is fixedly connected with the installation end (12), the middle part of the connecting end (13) is provided with a connecting hole, and the suture (1) is bolted with the connecting end (13) through the connecting hole.

10. An anchoring system for disc replacement surgery of the temporomandibular joint according to claim 9, characterized in that The rivet core (8) is provided in a conical nail structure corresponding to the titanium nail shell (6).

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