Triangular fibrocartilage complex ulna dead center tunnel positioner under wrist arthroscope

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a wrist arthroscopic ulna arthroscopic triangular fibrocartilage complex ulna dead center tunnel positioner, which comprises a first clamping part, a second clamping part, a third clamping part and a fourth clamping part, a second positioning hole is formed in the end part of the second clamping part; the first handheld part is connected with the other end part of the first clamping part so as to drive the first clamping part to move; the second handheld part is connected with the other end part of the second handheld part so as to drive the second clamping part to move; the first handheld part is detachably connected with the second handheld part. In the utility model, the whole structure is simple, the positioning is accurate, and the operation is easy. In addition, the first handheld part and the second handheld part are detachably connected, so that the convenience of operation can be further improved, the second handheld part can be connected to the first handheld part after the first clamping part extends into the operation position, and therefore the surgical forceps are suitable for different operation angles and use scenes.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically relates to a triangular fibrocartilage complex ulnar insertion tunnel locator under wrist arthroscopy. Background Technology

[0002] The current technique involves drilling a 1.5cm Kirschner wire 2.5cm proximal to the tip of the ulnar styloid process, between the extensor carpi ulnaris tendon and the flexor carpi ulnaris tendon, towards the distal end of the ulna. Based on the surgeon's experience, the ideal exit point is on the radial side of the lesser fossa of the ulna. The drilling angle needs to be monitored by intraoperative fluoroscopy.

[0003] Alternatively, an ulnar tunnel locator can be used. During the procedure, the locator is positioned 3-4 mm radially from the ulnar recess. The locator components are assembled, and the angle correspondence between the locator and the Kirschner wire sleeve is determined under fluoroscopy to create the tunnel.

[0004] However, existing technologies have the following problems:

[0005] 1. Existing technologies rely on experience for tunnel drilling, making it impossible to accurately locate the ulnar insertion point of the triangular fibrocartilage complex.

[0006] 2. Existing arthroscopic ulnar tunnel locators are cumbersome to assemble, and the locator's positioning end area is large, making it impossible to enter the joint cavity through the original arthroscopic approach. An additional incision is required to enter the joint cavity.

[0007] 3. Existing arthroscopic ulnar tunnel locators cannot achieve sufficient grasping force to fix the ulna.

[0008] 4. Tunnels require fluoroscopy, increasing the number of times patients and surgeons are exposed to X-rays. Utility Model Content

[0009] To address the aforementioned problems, the present invention aims to provide a triangular fibrocartilage complex ulnar insertion tunnel locator for wrist arthroscopy. This triangular fibrocartilage complex ulnar insertion tunnel locator for wrist arthroscopy can achieve accurate positioning while being simple in structure and easy to operate.

[0010] To achieve the above objectives, the technical solution of this utility model is as follows.

[0011] A wrist arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator, characterized in that it comprises:

[0012] The first clamping part has a first positioning hole at its end;

[0013] The second clamping part has a second positioning hole at its end;

[0014] The first hand-held part is connected to the other end of the first clamping part to drive the first clamping part to move;

[0015] The second hand-holding part is connected to the other end of the second hand-holding part to drive the second clamping part to move;

[0016] The first hand-held part and the second hand-held part are detachably connected.

[0017] In this invention, by providing a first positioning hole and a second positioning hole, the first positioning hole can extend into the wrist joint to guide the Kirschner wire during surgery, while the second positioning hole can be located outside the wrist to also guide the Kirschner wire during surgery. The first and second hand-held parts are used for hand force application, facilitating the clamping of the first and second gripping parts to the lesion site on the wrist joint. The overall structure is simple, provides accurate positioning, and is easy to operate. Furthermore, the detachable connection between the first and second hand-held parts further enhances operational convenience. The first gripping part can be inserted into the surgical position, and then the second hand-held part can be connected to the first hand-held part, thus adapting to different surgical angles and usage scenarios.

[0018] Furthermore, the locator also includes a guide rod adapted to the size of the second positioning hole. The guide rod has a through hole, and the through hole, the first positioning hole, and the second positioning hole are collinear. The primary purpose of the guide rod is to guide the Kirschner wire smoothly into place during operation. The collinearity of the through hole, the first positioning hole, and the second positioning hole ensures that the Kirschner wire can pass through the through hole into the first positioning hole. The first positioning hole allows the exit point of the Kirschner wire to be visualized under arthroscopy during surgery, avoiding the need for repeated X-ray confirmation of the Kirschner wire's position and thus reducing the radiation dose.

[0019] Furthermore, the guide rod includes a cylindrical body, with a through hole disposed within and penetrating the cylindrical body. One end face of the cylindrical body is provided with grinding teeth, and the other end face of the cylindrical body has a protrusion extending radially towards the cylindrical body. The grinding teeth facilitate positioning or grinding of bone during surgery. The protrusion facilitates force application and assists in positioning or grinding the grinding teeth.

[0020] Furthermore, the first clamping part includes a first rod part and a first positioning part. The first positioning part is connected to one end of the first rod part, and the other end of the first rod part is fixedly connected to the first hand-held part. The first positioning hole is provided on the first positioning part.

[0021] Furthermore, the second clamping part includes a second rod part and a second positioning part. The second positioning part is connected to one end of the second rod part, and the other end of the second rod part is fixedly connected to the second hand-held part. The second positioning hole is provided on the second positioning part.

[0022] Furthermore, the first rod is a cylinder with a diameter of less than 2 mm or a cube with a width of less than 2 mm, and the diameter of the first positioning hole is 2-3 mm.

[0023] Furthermore, the length of the first clamping part is more than twice the length of the first hand-held part, and the length of the second clamping part is more than twice the length of the second hand-held part.

[0024] Furthermore, both the first and second handheld parts are provided with handheld rings, which connect the first and second handheld parts to form handheld holes. The handheld holes are similar to the handheld holes of scissors, facilitating one-handed operation. Different fingers can be inserted into different handheld holes, allowing the first and second handheld parts to move closer or further apart.

[0025] Furthermore, the first hand-held part includes a first main body, the top end of the first main body is fixedly connected to the first clamping part, one side of the first main body is connected to the hand-held ring, and the other side of the first main body is provided with a groove adapted to the second hand-held part, and a limiting post is provided in the groove that is detachably connected to the second hand-held part.

[0026] Furthermore, the first hand-held part is also provided with a clamping groove for clamping the second hand-held part. The cooperation between the clamping groove and the limiting post ensures the stability of the first and second hand-held parts after connection, and that the first and second hand-held parts can only be disassembled in a specific direction. The depth of the clamping groove must be greater than the depth to which the second hand-held part extends into the clamping groove, so as to ensure the normal opening and closing of the positioner. The specific depth can be determined according to the situation, and the depth of the clamping groove can even penetrate to the other side of the first hand-held part.

[0027] Furthermore, the second handheld part includes a second main body, the top end of which is fixedly connected to the second clamping part. One side of the second main body is connected to the handheld ring, and the other side of the second main body is provided with a protrusion adapted to the first handheld part. The protrusion contains a mounting groove adapted to the limiting post. Preferably, the mounting groove is L-shaped and extends through the front and rear sides of the protrusion and the side closest to the first handheld part.

[0028] Furthermore, the positioner also includes a limiting member, which is movably connected to the second body and has a limiting notch to prevent the limiting post from exiting the mounting slot during use. Preferably, the limiting notch is V-shaped. The limiting member can be movably connected to the second body via a pivot or can be directly slidably connected to the second body. In operation, the movement of the limiting member on the second body allows the limiting member to open or close the slot for the limiting post to enter the mounting slot.

[0029] In practice, the limiting member is aligned with the mounting slot and inserted. Simultaneously, the clamping slot gradually clamps the second handpiece. Moving the limiting member upwards causes the limiting notch to abut against the limiting post, sealing the opening for the limiting post to enter the mounting slot and preventing accidental exit. This allows for the movable installation between the first and second handpieces, similar to the working principle of scissors. However, unlike scissors, this structure facilitates disassembly. To disassemble, the limiting member is moved downwards to open the opening for the limiting post to exit the mounting slot, allowing for easy removal.

[0030] The beneficial effects of this utility model are as follows: by setting a first positioning hole and a second positioning hole, the first positioning hole can extend into the wrist joint to guide the Kirschner wire during surgery, while the second positioning hole can be located on the outside of the wrist to guide the Kirschner wire during surgery. The first and second hand-held parts are used for hand force application, facilitating the clamping of the first and second clamping parts to grasp the lesion position of the wrist joint. The overall structure is simple, the positioning is accurate, and the operation is easy. In addition, the detachable connection between the first and second hand-held parts further improves the convenience of operation. The first clamping part can be inserted into the surgical position, and then the second hand-held part can be connected to the first hand-held part, thus adapting to different surgical angles and usage scenarios. Attached Figure Description

[0031] Figure 1 This is a first-angle structural schematic diagram of the present invention.

[0032] Figure 2 This is a schematic diagram of the second angle structure of this utility model.

[0033] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0034] Figure 4 yes Figure 2 A magnified view of a section at point B.

[0035] Figure 5 This is a schematic diagram of the structure of the first clamping part and the first hand-held part of this utility model after combination.

[0036] Figure 6 yes Figure 5 A magnified view of a section at point C.

[0037] Figure 7 This is a schematic diagram of the structure of the second clamping part, the second hand-held part, and the guide rod of this utility model.

[0038] Figure 8 yes Figure 7 A magnified view of a section at point D.

[0039] Figure 9This is a structural schematic diagram of the limiting component of this utility model.

[0040] 1. First clamping part; 11. First positioning hole; 12. First rod part; 13. First positioning part;

[0041] 2. Second clamping part; 21. Second positioning hole; 22. Second rod part; 23. Second positioning part;

[0042] 3. First hand-held part; 31. First main body; 311. Groove; 312. Limiting post; 32. Clamping groove;

[0043] 4. Second hand-held part; 41. Second main body; 411. Protrusion; 412. Mounting groove;

[0044] 5. Guide rod; 51. Through hole; 52. Cylinder; 521. Grinding teeth; 522. Protrusion;

[0045] 6. Handheld ring; 61. Handheld hole;

[0046] 7. Limiting component; 71. Limiting notch;

[0047] 8. Shaft; Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0049] See Figure 1-9 This embodiment provides a wrist arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator, comprising:

[0050] The first clamping part 1 has a first positioning hole 11 at its end;

[0051] The second clamping part 2 has a second positioning hole 21 at its end;

[0052] The first hand-held part 3 is connected to the other end of the first clamping part 1 to drive the first clamping part 1 to move;

[0053] The second hand-holding part 4 is connected to the other end of the second hand-holding part 2 to drive the second clamping part 2 to move;

[0054] The first hand-held part 3 and the second hand-held part 4 are detachably connected.

[0055] In this invention, by providing a first positioning hole 11 and a second positioning hole 21, the first positioning hole 11 can extend into the wrist joint to guide the Kirschner wire during surgery, while the second positioning hole 21 can be located outside the wrist to also guide the Kirschner wire during surgery. The first hand-held part 3 and the second hand-held part 4 are used for hand force application, facilitating the clamping of the first clamping part 1 and the second clamping part 2 to the lesion site of the wrist joint. The overall structure is simple, the positioning is accurate, and the operation is easy. Furthermore, the detachable connection of the first hand-held part 3 and the second hand-held part 4 further enhances the convenience of operation. The first clamping part 1 can be inserted into the surgical position, and then the second hand-held part 2 can be connected to the first hand-held part 1, thus adapting to different surgical angles and usage scenarios.

[0056] In this embodiment, the locator also includes a guide rod 5 that is adapted to the size of the second positioning hole 21. The guide rod 5 has a through hole 51, and the through hole 51, the first positioning hole 11, and the second positioning hole 21 are on the same straight line. The primary purpose of the guide rod 5 is to guide the Kirschner wire smoothly into place during operation. The fact that the through hole 51, the first positioning hole 11, and the second positioning hole 21 are on the same straight line ensures that the Kirschner wire can pass through the through hole 51 into the first positioning hole 11. The first positioning hole 11 allows the position of the Kirschner wire to be seen under arthroscopy during surgery, avoiding the need for multiple X-ray confirmations of the Kirschner wire's position and thus preventing an increase in radiation dose.

[0057] In this embodiment, the guide rod 5 includes a cylindrical body 52, with a through hole 51 disposed inside and penetrating the cylindrical body 52. ​​One end face of the cylindrical body 52 is provided with grinding teeth 521, and the other end face of the cylindrical body 52 has a protrusion 522 extending radially towards the cylindrical body 52. ​​The grinding teeth 521 facilitate positioning or grinding of bone during surgery. The protrusion 522 facilitates force application and assists in positioning or grinding the grinding teeth 521.

[0058] In this embodiment, the first clamping part 1 includes a first rod part 12 and a first positioning part 13. The first positioning part 13 is connected to one end of the first rod part 12, and the other end of the first rod part 12 is fixedly connected to the first hand-held part 3. The first positioning hole 11 is provided on the first positioning part 13.

[0059] In this embodiment, the second clamping part 2 includes a second rod part 22 and a second positioning part 23. The second positioning part 23 is connected to one end of the second rod part 22, and the other end of the second rod part 22 is fixedly connected to the second hand-held part 4. The second positioning hole 21 is provided on the second positioning part 23.

[0060] In this embodiment, the first rod 12 is a cylinder with a diameter of less than 2 mm or a cube with a width of less than 2 mm, and the diameter of the first positioning hole 11 is 2-3 mm.

[0061] In this embodiment, the length of the first clamping part 1 is more than twice the length of the first hand-held part 3, and the length of the second clamping part 2 is more than twice the length of the second hand-held part 4.

[0062] In this embodiment, both the first hand-held part 3 and the second hand-held part 4 are provided with a hand-held ring 6, which connects the first hand-held part 3 and the second hand-held part 4 to form a hand-held hole 61. The hand-held hole 61 is similar to the hand-held hole of scissors, which facilitates one-handed operation by the user. Different fingers can be inserted into different hand-held holes to move the first hand-held part 3 and the second hand-held part 4 closer together or further apart.

[0063] In this embodiment, the first hand-held part 3 includes a first main body 31, the top end of the first main body 31 is fixedly connected to the first clamping part 1, a hand-held ring 6 is connected to one side of the first main body 31, and a groove 311 adapted to the second hand-held part 4 is provided on the other side of the first main body 31. A limiting post 312 detachably connected to the second hand-held part 4 is provided in the groove 311.

[0064] In this embodiment, the first hand-held part 3 is also provided with a clamping groove 32 for clamping the second hand-held part 4. The cooperation between the clamping groove 32 and the limiting post 312 can ensure the stability of the first hand-held part 3 and the second hand-held part 4 after connection. When the first hand-held part 3 and the second hand-held part 4 are disassembled, they can only be disassembled in a specific direction. The depth of the clamping groove 32 is greater than the depth to which the second hand-held part 4 extends into the clamping groove 32. This can ensure the normal opening and closing of the positioner. The specific depth can be determined according to the situation. The depth of the clamping groove 32 can even penetrate to the other side of the first hand-held part 3.

[0065] In this embodiment, the second handheld part 4 includes a second main body 41. The top end of the second main body 41 is fixedly connected to the second clamping part 2. A handheld ring 6 is connected to one side of the second main body 41, and a protrusion 411 adapted to the first handheld part 3 is provided on the other side of the second main body 41. A mounting groove 412 adapted to the limiting post 312 is provided in the protrusion 411. The mounting groove 412 is L-shaped and extends through the front and rear sides of the protrusion 411 and the side near the first handheld part 3.

[0066] In this embodiment, the positioner further includes a limiting member 7, which is movably connected to the second body 41. The limiting member 7 is provided with a limiting notch 71 to prevent the limiting post 312 from exiting the mounting slot 412 during use. The limiting notch 71 is V-shaped. The limiting member 7 is movably connected to the second body 41 via an 8. In specific operation, the movement of the limiting member 7 on the second body 41 allows the limiting member 7 to open the slot for the limiting post 312 to enter the mounting slot 412, or to close the slot for the limiting post 312 to enter the mounting slot 412.

[0067] In practice, the limiting member 7 is aligned with the mounting groove 412 and inserted. Simultaneously, the clamping groove 32 gradually clamps the second hand-held part 4. Then, the limiting member 7 is moved upwards, causing the limiting notch 71 to abut against the limiting post 312, sealing the opening of the limiting post 312 into the mounting groove 412. This prevents the limiting post 312 from accidentally exiting the mounting groove 412, thus achieving movable installation between the first hand-held part 3 and the second hand-held part 4, similar to the working principle of scissors. However, unlike scissors, this structure facilitates disassembly. When disassembly is required, the limiting member 7 is moved downwards to open the opening of the limiting post 312 out of the mounting groove 412, allowing for easy disassembly.

[0068] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wrist arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator, characterized in that, include: The first clamping part has a first positioning hole at its end; The second clamping part has a second positioning hole at its end; The first hand-held part is connected to the other end of the first clamping part to drive the first clamping part to move; The second hand-holding part is connected to the other end of the second hand-holding part to drive the second clamping part to move; The first hand-held part and the second hand-held part are detachably connected.

2. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 1, characterized in that, The positioner also includes a guide rod that is adapted to the size of the second positioning hole, and the guide rod has a through hole, the through hole, the first positioning hole and the second positioning hole are on the same straight line.

3. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 2, characterized in that, The guide rod includes a cylinder, the through hole is disposed inside the cylinder and penetrates the cylinder, one end face of the cylinder is provided with grinding teeth, and the other end face of the cylinder has a protrusion extending radially into the cylinder.

4. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 1, characterized in that, The first clamping part includes a first rod part and a first positioning part. The first positioning part is connected to one end of the first rod part, and the other end of the first rod part is fixedly connected to the first hand-held part. The first positioning hole is provided on the first positioning part.

5. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 1, characterized in that, The second clamping part includes a second rod part and a second positioning part. The second positioning part is connected to one end of the second rod part, and the other end of the second rod part is fixedly connected to the second hand-held part. The second positioning hole is provided on the second positioning part.

6. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 1, characterized in that, The length of the first clamping part is more than twice the length of the first hand-held part, and the length of the second clamping part is more than twice the length of the second hand-held part.

7. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 1, characterized in that, Both the first and second hand-held parts are provided with hand-held rings, which are connected to the first and second hand-held parts to form a hand-held hole.

8. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 7, characterized in that, The first hand-held part includes a first main body, the top end of the first main body is fixedly connected to the first clamping part, one side of the first main body is connected to the hand-held ring, and the other side of the first main body is provided with a groove adapted to the second hand-held part, and a limiting post is provided in the groove that is detachably connected to the second hand-held part.

9. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 8, characterized in that, The second hand-held part includes a second main body, the top end of the second main body is fixedly connected to the second clamping part, one side of the second main body is connected to the hand-held ring, and the other side of the second main body is provided with a protrusion adapted to the first hand-held part, and the protrusion is provided with an installation groove adapted to the limiting post.

10. The arthroscopic triangular fibrocartilage complex ulnar insertion tunnel locator according to claim 9, characterized in that, The positioner also includes a limiting member, which is movably connected to the second body and has a limiting notch to prevent the limiting post from exiting the mounting slot during use.

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