Temporomandibular joint disc suture needle with holding structure

Abstract

The temporomandibular joint disc suture needle with the holding structure comprises a needle tube main body, and the two ends of the needle tube main body are a puncture end and a propelling end respectively. The holding mechanism is used for forming a transverse holding type holding structure, the propelling mechanism is used for suturing the joint disc, the puncturing mechanism is used for puncturing and anchoring the joint disc, the holding mechanism is arranged on the side portion of the needle tube body, and the propelling mechanism is assembled at the propelling end of the needle tube body. The needle tube has the advantages that the holding mechanism is arranged, the holding mechanism and the needle tube body jointly form a T-shaped transverse holding type holding structure, an operator can hold the needle tube conveniently, the situation that the operator exerts force difficultly during suturing is avoided, and it is guaranteed that fine suturing operation is carried out smoothly; the propelling mechanism is arranged to be matched with the puncture mechanism, the anchoring part can be stably pushed to the designated position of the temporomandibular joint disc, anchoring of the suture line can be achieved through one-time pushing, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a temporomandibular joint disc suture needle with a gripping structure. Background Technology

[0002] In existing technologies, anterior displacement of the temporomandibular joint disc is a common condition among temporomandibular joint disorders, typically causing symptoms such as joint pain, abnormal sounds, and limited mandibular movement. Temporomandibular joint disc repositioning can restore the normal disc-condyle relationship, relieve pain, and alleviate limited mouth opening. In 1989, medical researchers proposed endoscopic-assisted repositioning and suturing of the disc to treat disc displacement or recurrent joint dislocation. Subsequently, another group of medical researchers reported on modified endoscopic-assisted suturing techniques in 1992, 1994, and 2012. Endoscopic-assisted temporomandibular joint disc repositioning is one of the common treatment methods for disc repositioning. It is a surgical procedure in which surgeons use endoscopic instruments to operate within the temporomandibular joint cavity, repositioning the disc and suturing it to the subchondral bone of the anterior wall of the external auditory canal.

[0003] Currently, the widely used surgical technique is the one invented by Professor Yang Chi of Shanghai Jiao Tong University, which includes releasing the anterior attachment of the articular disc, repositioning the articular disc, and suturing fixation. The suturing fixation requires a specially made articular disc repositioning suture. Approximately one-sixth of the suture's length at both ends is specially treated with medical bio-adhesive to harden it, facilitating the insertion of the suture needle during surgery. During articular disc suturing fixation, a 12-gauge arthroscopic suture needle is inserted into the superior articular cavity. At the junction of the posterior band of the articular disc and the double-plate area, the needle is inserted into the articular disc at the junction of the outer and middle thirds, from the outer to the inner third, and 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 suture 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. During the surgical procedure, the suture is prone to bending at one end when it is inserted into the suture needle, and the suture tip is difficult to pass accurately through the loop, resulting in time-consuming and laborious suturing. Furthermore, the procedure requires a high degree of coordination between the operator and demands extremely high skill from the operator. The two steps of inserting the suture into the suture needle and looping and pulling out the suture are the speed-limiting steps of the operation, and are prone to failure due to improper suture insertion or improper coordination between the two needles. This leads to suture waste, prolonged operation time, and additional surgical trauma to the patient. This surgical method is difficult to learn and not easy for beginners to learn.

[0004] Chinese utility model patent application number 201910649779.2 discloses a temporomandibular joint arthroscopic suture needle, including a needle body, a needle tube at the top of the needle body, a needle tip at the top of the needle tube, and a gripping part at one end of the needle body. The end of the needle tube away from the needle tip is inserted into the middle of the gripping part, and the inner hole of the needle tube is connected to the inner hole of the gripping part. The surface of the gripping part is decorated with knurled texture. However, the gripping part of this temporomandibular joint arthroscopic suture needle is relatively small, making it difficult for the operator to grip, resulting in difficulty in applying force during suturing and affecting the precision of the suturing operation. Utility Model Content

[0005] The purpose of this invention is to provide a temporomandibular joint disc suture needle with a gripping structure.

[0006] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0007] A temporomandibular joint disc suture needle with a gripping structure includes a needle tube body, with a puncture end and an advance end at both ends of the needle tube body, and further includes a gripping mechanism for forming a horizontal gripping structure, an advance mechanism for suturing the joint disc, and a puncture mechanism for puncturing and anchoring the joint disc. The gripping mechanism is arranged on the side of the needle tube body, the advance mechanism is assembled at the advance end of the needle tube body, and the puncture mechanism is disposed at the puncture end of the needle tube body.

[0008] The gripping mechanism includes a gripping mounting base and a gripping handle. The gripping mounting base is disposed on one side of the needle body and is fixedly connected to the needle body. The gripping handle is disposed at the end of the gripping mounting base away from the needle body and one end of the handle is threadedly connected to the gripping mounting base. The gripping handle and the needle body are arranged perpendicular to each other to form a T-shaped horizontal gripping structure.

[0009] The grip handle is cylindrical with an arc-shaped end away from the needle body, and the length of the grip handle is greater than the length of the needle body.

[0010] The propulsion mechanism includes a propulsion base, a propulsion core rod, and a propulsion end block. The propulsion base is disposed at the propulsion end of the needle tube body and is fixedly connected to the needle tube body. The propulsion core rod is disposed inside the needle tube body and is inserted into the needle tube body. One end of the propulsion core rod protrudes from the propulsion end of the needle tube body. The propulsion end block is disposed at the end of the propulsion core rod that protrudes from the needle tube body and is fixedly connected to the propulsion core rod.

[0011] It also includes a push pin, which is disposed at the end of the push rod away from the push end block and is fixedly connected to the push rod, and the push pin is located inside the puncture end of the needle body.

[0012] The propulsion base is configured as a disc-shaped base structure, and the propulsion end block is configured as a disc-shaped end block structure corresponding to the propulsion base, with the side of the propulsion end block away from the propulsion core rod being configured as a groove structure.

[0013] The puncture mechanism includes a puncture tip, a puncture base tube, and a puncture needle. The puncture tip is located at the end of the needle tube body away from the advance base and is integrally formed with the needle tube body. The puncture base tube is located at the end of the puncture tip away from the needle tube body and is fixedly connected to the puncture tip. The puncture needle is located inside the puncture base tube and is fixedly connected to the puncture tip. The end of the puncture needle away from the puncture tip protrudes from the puncture base tube.

[0014] The puncture needle is configured as a curved needle structure and has a suture avoidance groove on the inner side of the curved part, which penetrates the side wall of the puncture needle.

[0015] The push pin is configured as a flexible push pin structure and is located inside the puncture needle.

[0016] It also includes a limiting catheter, which is disposed outside the puncture needle and connected to the puncture needle in a sleeve. The limiting catheter is configured as a flexible catheter structure and the end of the puncture needle away from the puncture tip protrudes from the limiting catheter.

[0017] The beneficial effects of this utility model are:

[0018] It is equipped with a gripping mechanism, which together with the needle body forms a T-shaped horizontal gripping structure, making it easy for operators to hold and avoiding difficulties in applying force during suturing, thus ensuring the smooth progress of delicate suturing operations. It is equipped with a pushing mechanism that works in conjunction with the puncture mechanism to stably push the anchor to the designated position on the temporomandibular joint disc. The suture can be anchored in one push, and there will be no operation failure due to improper suture threading or improper coordination of the two needles. The operation is simple and effective. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0020] Figure 2 This is a cross-sectional view of the propulsion mechanism and the needle body in embodiment one of this utility model;

[0021] Figure 3This is a schematic diagram of the puncture mechanism and the needle body in embodiment one of this utility model;

[0022] Figure 4 This is a schematic diagram of the cooperation between the limiting catheter and the puncture needle in Embodiment 2 of this utility model;

[0023] Figure 5 This is a schematic diagram of the backflow blockage and the cooperation between the reset spring and the needle body of this utility model.

[0024] In the diagram: 1. Needle body; 2. Grip mounting base; 3. Grip handle; 4. Advancement base; 5. Advancement core rod; 6. Advancement end block; 7. Advancement pin; 8. Puncture tip; 9. Puncture base tube; 10. Puncture needle; 11. Limiting catheter; 12. Backflow block; 13. Return spring. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] Example 1:

[0027] A temporomandibular joint disc suture needle with a gripping structure includes a needle body 1, with a puncture end and an advance end at both ends. It also includes a gripping mechanism for forming a horizontal gripping structure, an advance mechanism for suturing the joint disc, and a puncture mechanism for puncturing and anchoring the joint disc. The gripping mechanism is located on the side of the needle body 1, the advance mechanism is mounted on the advance end of the needle body 1, and the puncture mechanism is located on the puncture end of the needle body 1. A schematic diagram of the overall structure of Embodiment 1 of this utility model is shown below. Figure 1 As shown.

[0028] The gripping mechanism includes a gripping mounting base 2 and a gripping handle 3. The gripping mounting base 2 is located on one side of the syringe body 1 and is fixedly connected to the syringe body 1. The gripping handle 3 is located at the end of the gripping mounting base 2 away from the syringe body 1, and one end of it is threadedly connected to the gripping mounting base 2. The gripping handle 3 and the syringe body 1 are arranged perpendicularly to each other to form a T-shaped horizontal gripping structure. The gripping handle 3 is a cylindrical handle, and its end away from the syringe body 1 is set with an arc-shaped end structure. The length of the gripping handle 3 is greater than the length of the syringe body 1. The grip mounting base 2 and the grip handle 3 work together to form a T-shaped horizontal grip structure for easy gripping by the operator. The grip mounting base 2 serves as a mounting structure on the needle body 1 to meet the installation requirements between the grip handle 3 and the needle body 1. The grip handle 3, together with the needle body 1, forms a T-shaped horizontal grip structure for easy gripping by the operator. The grip handle 3 is threadedly connected to the grip mounting base 2 to achieve a detachable installation connection between the grip handle 3 and the needle body 1 for easy use.

[0029] The advancing mechanism includes an advancing base 4, an advancing core rod 5, and an advancing end block 6. The advancing base 4 is located at the advancing end of the needle tube body 1 and is fixedly connected to the needle tube body 1. The advancing core rod 5 is located inside the needle tube body 1 and is inserted into the needle tube body 1. One end of the advancing core rod 5 protrudes from the advancing end of the needle tube body 1. The advancing end block 6 is located at the protruding end of the advancing core rod 5 and is fixedly connected to the advancing core rod 5. The advancing mechanism, through the cooperation of the advancing base 4, the advancing core rod 5, and the advancing end block 6, advances the anchor during the suturing process to anchor the articular disc. In the suture process, the advancing base 4 serves as a base structure on the needle tube body 1 to meet the force requirements of the operator's fingers. The advancing core rod 5 provides mounting support for the advancing end block 6 and together with the needle tube body 1 forms the needle tube structure. The advancing end block 6 serves as an end block structure on the advancing core rod 5, allowing the operator to press the advancing end block 6 to drive the advancing core rod 5 to slide along the needle tube body 1, thereby advancing the anchor during the suture process to perform anchoring suture operations on the articular disc. A cross-sectional view of the advancing mechanism and the needle tube body 1 in Embodiment 1 of this utility model is shown below. Figure 2 As shown.

[0030] It also includes a push pin 7, which is located at the end of the push rod 5 away from the push end block 6 and is fixedly connected to the push rod 5. The push pin 7 is located inside the puncture end of the needle body 1. The push base 4 is set as a disc-shaped base structure. The push end block 6 is set as a disc-shaped end block structure corresponding to the push base 4, and the side of the push end block 6 away from the push rod 5 is set as a groove structure. The push pin 7 is used as a push structure inside the needle body 1 to push the anchor when puncturing and anchoring the articular disc.

[0031] The puncture mechanism includes a puncture tip 8, a puncture base tube 9, and a puncture needle 10. The puncture tip 8 is located at the end of the needle tube body 1 away from the advance base 4 and is integrally formed with the needle tube body 1. The puncture base tube 9 is located at the end of the puncture tip 8 away from the needle tube body 1 and is fixedly connected to the puncture tip 8. The puncture needle 10 is located inside the puncture base tube 9 and is fixedly connected to the puncture tip 8. The end of the puncture needle 10 away from the puncture tip 8 protrudes from the puncture base tube 9. The puncture needle 10 is configured as a curved needle structure, and a suture avoidance groove is provided on the inner side of its curved portion. The suture avoidance groove penetrates the side wall of the puncture needle 10. The advance pin 7 is configured as a flexible pin structure and is located inside the puncture needle 10. The puncture mechanism is constructed by... The puncture tip 8, puncture base tube 9, and puncture needle 10 cooperate to form the puncture structure of the suture needle, facilitating penetration of the articular disc during repositioning and repair. The puncture tip 8 serves as a mounting structure on the needle body 1, providing support for the puncture base tube 9 and puncture needle 10. The puncture base provides installation limits for the puncture needle 10. The puncture needle 10 forms the puncture structure of the suture needle, facilitating penetration of the articular disc during repositioning and repair. The curved needle tip structure of the puncture needle 10 facilitates puncture operations on the temporomandibular joint disc. The suture clearance groove accommodates the installation of sutures. A schematic diagram of the puncture mechanism and needle body 1 in Embodiment 1 of this utility model is shown below. Figure 3 As shown.

[0032] Example 2:

[0033] Based on Embodiment 1, a limiting catheter 11 is also included. The limiting catheter 11 is disposed outside the puncture needle 10 and is sleeved and connected to the puncture needle 10. The limiting catheter 11 is configured as a flexible catheter structure, with one end of the puncture needle 10 away from the puncture tip 8 protruding from the limiting catheter 11. The limiting catheter 11 serves as a flexible limiting structure outside the puncture needle 10, thereby limiting and guiding the puncture needle 10 during operation to prevent puncture deviation. A schematic diagram of the cooperation between the limiting catheter 11 and the puncture needle 10 in Embodiment 2 of this utility model is shown below. Figure 4 As shown.

[0034] The structure of the needle body 1, the propulsion core rod 5, the propulsion end block 6, and the puncture needle 10 is similar to that of the temporomandibular joint disc suture needle in the prior art.

[0035] The device also includes a backflow plug 12 and a reset spring 13. The backflow plug 12 is located inside the needle body 1 near the puncture tip 8. The reset spring 13 is located inside the needle body 1, corresponding to the push rod 5. The backflow plug 12 is used to prevent liquid backflow into the needle body 1 during the operation, and the reset spring 13 is used to reset the push rod 5 and the push end block 6 after puncture. A schematic diagram of the backflow plug 12 and reset spring 13 in conjunction with the needle body 1 is shown below. Figure 5 As shown.

[0036] Working principle:

[0037] When repositioning and repairing the temporomandibular joint disc, the suture is secured to the anchor. Then, the anchor with the suture is inserted into the puncture needle 10 along the end away from the puncture tip 8, ensuring the suture is inside the suture clearance groove. The operator then holds the suture needle by the handle 3 and inserts the puncture needle 10 to the designated position on the temporomandibular joint disc. Next, the operator presses the advance end block 6 with their thumb, causing the advance end block 6 to drive the advance pin 7 along the inside of the puncture needle 10, pushing the anchor out of the puncture needle 10. The anchor removed from the puncture needle 10 conforms to the arc shape inside the joint disc, preventing the suture from falling off. This achieves anchoring between the suture and the joint disc. Finally, the position of the joint disc is adjusted using the suture, thus achieving repositioning and repair of the temporomandibular joint disc.

[0038] The beneficial effects of this utility model are that it is equipped with a gripping mechanism, which together with the needle body forms a T-shaped horizontal gripping structure, making it easy for the operator to grip and avoiding the difficulty of the operator to exert force during suturing, thus ensuring the smooth progress of fine suturing operations. It is equipped with a pushing mechanism that works in conjunction with the puncture mechanism to stably push the anchor to the designated position on the temporomandibular joint disc. The suture can be anchored in one push, and there will be no operation failure due to improper threading operation or improper coordination of the two needles. The operation is simple and effective.

[0039] 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. A suture needle for temporomandibular joint disc having a holding structure, comprising a needle tube main body (1) having a puncture end and a push end at both ends thereof, characterized in that, The device further comprises a holding mechanism for forming a cross-grip holding structure, a pushing mechanism for suturing the articular disc, and a puncture mechanism for puncture anchoring of the articular disc, the holding mechanism is arranged on the side of the needle tube body (1), the pushing mechanism is assembled on the pushing end of the needle tube body (1), and the puncture mechanism is arranged on the puncture end of the needle tube body (1).

2. The TMJ disc suturing needle having a holding structure according to claim 1, wherein, The holding mechanism comprises a holding mounting seat (2) and a holding handle (3), the holding mounting seat (2) is arranged on one side of the needle tube body (1) and is fixedly connected with the needle tube body (1), and the holding handle (3) is arranged on the end of the holding mounting seat (2) away from the needle tube body (1) and is threadedly connected with the holding mounting seat (2) at one end, and the holding handle (3) is arranged perpendicular to the needle tube body (1) to form a T-shaped cross-grip holding structure.

3. The TMJ disc suturing needle having a holding structure according to claim 2, wherein, The holding handle (3) is a cylindrical handle, and the end thereof away from the needle tube body (1) is arranged in an arc-shaped end head structure, and the length of the holding handle (3) is greater than the length of the needle tube body (1).

4. The TMJ disc suturing needle having a holding structure according to claim 3, wherein, The pushing mechanism comprises a pushing base (4), a pushing core rod (5), and a pushing end block (6), the pushing base (4) is arranged on the pushing end of the needle tube body (1) and is fixedly connected with the needle tube body (1), the pushing core rod (5) is arranged in the inside of the needle tube body (1) and is inserted with the needle tube body (1), one end of the pushing core rod (5) protrudes from the pushing end of the needle tube body (1), and the pushing end block (6) is arranged on the end of the pushing core rod (5) protruding from the needle tube body (1) and is fixedly connected with the pushing core rod (5).

5. The TMJ disc suturing needle having a holding structure according to claim 4, wherein, The device further comprises a pushing thimble (7), which is arranged on the end of the pushing core rod (5) away from the pushing end block (6) and is fixedly connected with the pushing core rod (5), and the pushing thimble (7) is located in the inside of the puncture end of the needle tube body (1).

6. The TMJ disc suturing needle having a holding structure according to claim 5, wherein, The pushing base (4) is arranged in a disc-shaped base structure, the pushing end block (6) is arranged in a disc-shaped end block structure corresponding to the pushing base (4), and the side of the pushing end block (6) away from the pushing core rod (5) is arranged in a groove structure.

7. The TMJ disc suturing needle having a holding structure according to claim 6, wherein, The puncture mechanism comprises a puncture end head (8), a puncture base pipe (9), and a puncture needle head (10), the puncture end head (8) is arranged on the end of the needle tube body (1) away from the pushing base (4) and is integrally formed with the needle tube body (1), the puncture base pipe (9) is arranged on the end of the puncture end head (8) away from the needle tube body (1) and is fixedly connected with the puncture end head (8), the puncture needle head (10) is arranged on the inside of the puncture base pipe (9) and is fixedly connected with the puncture end head (8), and the end of the puncture needle head (10) away from the puncture end head (8) protrudes from the puncture base pipe (9).

8. The TMJ disc suturing needle having a holding structure according to claim 7, wherein, The puncture needle head (10) is arranged in a bent needle head structure, and a suture avoiding groove is arranged on the inside of the bending part of the puncture needle head (10), and the suture avoiding groove penetrates through the side wall of the puncture needle head (10).

9. The TMJ disc suturing needle having a holding structure according to claim 8, wherein, The propelling needle (7) is arranged as a flexible needle structure and is located inside the puncture needle head (10).

10. The TMJ disc suturing needle having a holding structure according to claim 9, wherein, A limiting catheter (11) is further included, which is arranged outside the puncture needle head (10) and is connected with the puncture needle head (10) in a sleeved manner. The limiting catheter (11) is arranged as a flexible catheter structure, and the puncture needle head (10) protrudes from the limiting catheter (11) at an end away from the puncture end head (8).

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