Nail extractor for orthopedic surgery

Abstract

The utility model relates to the technical field of medical devices, and discloses a nail extractor for orthopedic surgery, which comprises a holding rod, a sleeve is fixedly connected to the middle of the outer wall of the holding rod, a sliding rod is slidably connected to the inside of the holding rod, a sleeve plate is fixedly connected to the outer wall of the middle of the sliding rod, a first spring is fixedly connected to the bottom side of the sleeve plate, and a second spring is fixedly connected to the bottom side of the sleeve plate. A trapezoidal block is fixedly connected to the bottom side of the sliding rod, T-shaped openings are formed in the left end and the right end of the trapezoidal block correspondingly, a connecting rod is fixedly connected to the bottom side of the trapezoidal block, an arc-shaped rubber plate is fixedly connected to the bottom side of the connecting rod, and sliding assemblies are arranged at the left end and the right end of a first spring correspondingly. According to the nail taking-out device, a nail can be clamped and fixed, reset force is provided through the first spring, meanwhile, the nail is fixed while being fixed, and therefore the nail can be taken out conveniently, accidents are prevented from occurring in the tedious operation process, and then the safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a nail remover for orthopedic surgery. Background Art

[0002] In orthopedic surgery, a nail remover is a special surgical tool used to remove internal fixation devices (such as bone nails, screws, plates, etc.). These internal fixation devices may have been implanted into the bone during a previous surgery to treat fractures, bone cracks, or bone reconstruction. Once these internal fixation devices have completed their function, or need to be replaced, adjusted, or removed, the doctor needs to use a nail remover to perform the operation.

[0003] After searching, the Chinese patent document announcement number: CN214549581U discloses a nail remover for orthopedic surgery, including a connecting sleeve and a lifting rod, the upper end of the connecting sleeve is coaxially fixedly connected with a guide sleeve, the outer side of the guide sleeve is connected with a rotating hand rod, a vertical through hole is provided on the guide sleeve, the inner wall of the vertical through hole is connected with the side of the lifting rod in a sliding fit, the lower end of the connecting sleeve is connected with a nail removal thread head, the upper surface of the nail removal thread head is provided with a groove, a lifting block is provided in the groove, the lower end of the lifting rod is fixedly connected with the lifting block, the left and right sides of the lifting block are provided with inclined surfaces, the lower end of the lifting block is connected with the bottom of the groove through a vertical reset spring, and a plurality of horizontal through holes are provided on the side wall of the groove, each horizontal through hole is slidably connected with a telescopic column, and an inclined surface is provided on one end of the telescopic column close to the lifting block. Through the provision of the nail removal thread head and the telescopic column, the utility model can not only remove normal bone screws, but also resist broken bone screws and remove them.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the above patents mention in the beneficial effects: "Through the setting of the screw removal thread head and the telescopic column, the utility model can not only remove normal bone nails, but also resist the broken bone nails and then remove them; through the setting of the lifting block, the vertical reset spring and the horizontal reset spring, the utility model can automatically restore the initial state after removing the broken bone nail, which is convenient for subsequent use." Although the above patents enable the bone nails to be automatically reset through the spring, in the specific manufacturing process, the spring may need to be in a compressed state during the process of removing the nail, which is cumbersome to operate and prone to accidents. Therefore, in view of the above shortcomings, a nail remover for orthopedic surgery is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a nail remover for orthopedic surgery, aiming to improve the problem that after the nail is fixed, the process of removing the nail still needs to be pressed to make the spring in a compressed state, the operation process is relatively cumbersome, and it is easy to cause accidents.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The cam is connected with the cam body by the spring, and the cam body is connected with the spring one ...

[0008] Furthermore, a support block is fixedly connected to the top side of the limit block, a special-shaped opening is provided inside the support block, telescopic components are provided on the far side of the inner walls of the two support blocks, square plates are fixedly connected to the front and rear sides of the top of the telescopic components, and trapezoidal sliders are fixedly connected to the adjacent sides of the two telescopic components.

[0009] Furthermore, the two sliding assemblies each include a sliding column, the exteriors of the two sliding columns are respectively slidably connected to the left and right inner walls of the trapezoidal block, and the far sides of the two sliding columns are fixedly connected to a connecting block.

[0010] Furthermore, the two telescopic assemblies each include a spring 2, the far sides of the two springs 2 are respectively fixedly connected to the far sides of the inner walls of the two support blocks, and the near sides of the two springs 2 are fixedly connected to a square block.

[0011] Furthermore, the exteriors of the two connecting blocks are respectively slidably connected to the inner walls at the left and right ends of the trapezoidal block, and the exteriors of the connecting blocks are slidably connected to the inner wall of the T-shaped opening.

[0012] Furthermore, the exterior of the two limit posts are respectively fixedly connected to the left and right ends of the bottom of the handle, and the exterior of the sleeve plate is slidably connected to the inner wall of the handle.

[0013] Furthermore, the outside of the sliding column is slidably connected to the inside of the T-shaped opening, and the bottom side of the spring 1 is fixedly connected to the middle inner wall of the grip rod.

[0014] Furthermore, the outside of the square block is slidably connected to the inside of the support block, and the outside of the trapezoidal sliding block is slidably connected to the inside of the support block.

[0015] Furthermore, the bottom side of the limit block is slidably connected to the top side of the support block, and the top ends of the front and rear sides of the two square blocks are respectively fixedly connected to the adjacent sides of the plurality of square plates.

[0016] Furthermore, the ends of the two special-shaped blocks that are far away are in contact with the ends of the two trapezoidal sliding blocks that are close to each other, and the outside of the square block is slidably connected to the inside of the special-shaped opening.

[0017] The utility model has the following beneficial effects:

[0018] In the utility model, the nail can be clamped and fixed by the coordinated use of the sliding rod, the spring-trapezoidal block, the connecting rod, the arc-shaped rubber plate, the T-shaped opening, the sliding column, the connecting block and the like, and the spring 1 provides a reset force. At the same time, the spring 2, the square block, the square plate, the trapezoidal sliding block and the like cooperate with each other to fix the nail while fixing it, thereby facilitating the removal of the nail and preventing accidents from occurring during the cumbersome operation process, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of a nail remover for orthopedic surgery proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of a grip rod of a nail remover for orthopedic surgery proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of a trapezoidal block of a nail remover for orthopedic surgery proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of a limit block of a nail remover for orthopedic surgery proposed by the utility model;

[0023] Figure 5 The utility model is a schematic diagram of the internal structure of a support block of a nail remover for orthopedic surgery.

[0024] Legend:

[0025] 1. Grip rod; 2. Sleeve; 3. Sliding rod; 4. Spring 1; 5. Trapezoidal block; 6. Connecting rod; 7. Curved rubber plate; 8. T-shaped opening; 9. Sliding column; 10. Connecting block; 11. Curved strip; 12. Limiting column; 13. Cover plate; 14. Special-shaped block; 15. Limiting block; 16. Support block; 17. Spring 2; 18. Square block; 19. Square plate; 20. Trapezoidal slider; 21. Special-shaped opening; 22. Sleeve plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a nail remover for orthopedic surgery, comprising a grip rod 1, a sleeve 2 is fixedly connected to the middle of the outer wall of the grip rod 1, so that the sleeve 2 is held to drive the grip rod 1 to move, a sliding rod 3 is slidably connected to the inside of the grip rod 1, and the sliding rod 3 can slide vertically through the restriction of the grip rod 1, a sleeve plate 22 is fixedly connected to the middle outer wall of the sliding rod 3, and the sleeve plate 22 is driven to slide by the sliding rod 3, and the outer side of the sleeve plate 22 is slidably connected to the inner wall of the grip rod 1, and the sleeve plate 22 can slide vertically through the restriction of the grip rod 1, and a spring 4 is fixedly connected to the bottom side of the sleeve plate 22, and the bottom side of the spring 4 is fixedly connected to the middle inner wall of the grip rod 1, and the spring 4 can be evenly stressed by fixing both sides of the spring 4;

[0028] A trapezoidal block 5 is fixedly connected to the bottom side of the sliding rod 3, and the trapezoidal block 5 is pushed to slide by the sliding rod 3. T-shaped openings 8 are provided at the left and right ends of the trapezoidal block 5, so that the sliding column 9 and the connecting block 10 can have activity space. A connecting rod 6 is fixedly connected to the bottom side of the trapezoidal block 5, and the connecting rod 6 is pushed to slide by the trapezoidal block 5. An arc-shaped rubber plate 7 is fixedly connected to the bottom side of the connecting rod 6, so that the connecting rod 6 can push the arc-shaped rubber plate 7 to limit the top of the nail. Sliding components are provided at the left and right ends of the spring 1 4, and the two sliding components include sliding columns 9. The outside of the sliding column 9 is slidably connected to the inside of the T-shaped opening 8, and the outsides of the two sliding columns 9 are respectively slidably connected to the inner walls of the left and right ends of the trapezoidal block 5. The sliding column 9 can slide tiltedly through the restrictions of the trapezoidal block 5 and the T-shaped opening 8;

[0029] The two sliding columns 9 are fixedly connected to the far side with a connecting block 10, and the outer parts of the two connecting blocks 10 are respectively slidably connected to the left and right inner walls of the trapezoidal block 5, and the outer parts of the connecting blocks 10 are slidably connected to the inner wall of the T-shaped opening 8. The connecting blocks 10 can slide tiltedly due to the restrictions of the trapezoidal block 5 and the T-shaped opening 8. The far side of the two sliding components are fixedly connected to the arc strip 11, and the middle part of the arc strip 11 is rotatably connected to the limit column 12. The limit column 12 is driven to rotate by sliding the arc strip 11. The outer parts of the two limit columns 12 are respectively fixedly connected to the left and right ends of the bottom of the handle 1 to provide support for the limit column 12.

[0030] Reference Figure 1 , Figure 4 and Figure 5 The top side of the sliding rod 3 is fixedly connected with a cover plate 13, and the sliding rod 3 is driven to slide on the inner wall of the gripping rod 1 by pushing the cover plate 13. The left and right sides of the cover plate 13 are fixedly connected with special-shaped blocks 14, and the special-shaped blocks 14 are driven to slide by the cover plate 13. The top sides of the left and right ends of the gripping rod 1 are fixedly connected with limit blocks 15 to provide support force for the limit blocks 15. The bottom side of the limit block 15 is slidably connected to the top side of the support block 16. The top side of the limit block 15 is fixedly connected with the support block 16. The support block 16 is provided with a special-shaped opening 21 inside, so that the square block 18 and the trapezoidal slider 20 can have activity space. The outside of the square block 18 is slidably connected to the inside of the special-shaped opening 21. The square block 18 can slide horizontally due to the restriction of the special-shaped opening 21;

[0031] The inner walls of the two support blocks 16 are both provided with telescopic components on their far sides. The two telescopic components include springs 17. The far sides of the two springs 17 are respectively fixedly connected to the far sides of the inner walls of the two support blocks 16. The near sides of the two springs 17 are both fixedly connected to square blocks 18. By fixing the two sides of the springs 17, the springs 17 can be evenly stressed. The outside of the square block 18 is slidably connected to the inside of the support block 16. The square block 18 can slide horizontally through the restriction of the support block 16. Square plates 19 are fixedly connected to the front and rear sides of the top, and the top ends of the front and rear sides of the two square blocks 18 are respectively fixedly connected to the adjacent sides of the multiple square plates 19. The square plates 19 are used to limit the square blocks 18 to prevent them from sliding out. The adjacent sides of the two telescopic components are fixedly connected to trapezoidal sliders 20. The outer side of the trapezoidal sliders 20 is slidably connected to the inside of the support block 16. The trapezoidal sliders 20 are limited by the support block 16 to enable them to slide horizontally. The far ends of the two special-shaped blocks 14 are respectively in contact with the adjacent ends of the two trapezoidal sliders 20.

[0032] Working principle: by aligning the two limit columns 12 with the nails, and then holding the sleeve 2, pressing the cover plate 13 with the thumb to push the sleeve 2 to slide on the inner wall of the grip rod 1, and at the same time, it will drive the cover plate 22 to slide on the inner wall of the grip rod 1 and squeeze the spring 14, so that the spring 14 can store elastic potential energy, and then give the sliding rod 3 a force in the opposite direction to reset, and at the same time, the sliding rod 3 will also push the trapezoidal block 5, through the T-shaped openings 8 opened at the left and right ends of the trapezoidal block 5, so that the sliding column 9 can be pushed to slide inside the T-shaped opening 8, and then the sliding column 9 can push the connecting block 10, thereby pushing the arc strip 11, and the arc strip 11 is rotated outside the limit column 12, so that the thrust is converted into rotational force, reaching the sliding column 9 and the connecting block 10. Sliding inside the T-shaped opening 8, the two limiting columns 12 can rotate close to one side to fix the nail, and the arc-shaped rubber plate 7 limits the nail downward, and when the cover plate 13 slides, it can drive the special-shaped block 14 to slide downward, and after contacting the trapezoidal slider 20, the trapezoidal slider 20 can slide on the inner wall of the support block 16, and push the square block 18 to slide on the inner wall of the support block 16 and squeeze the spring 2 17, so that the spring 2 17 can store elastic potential energy, and then give the trapezoidal slider 20 a force in the opposite direction, so that after the special-shaped block 14 slides below the horizontal line of the trapezoidal slider 20, the trapezoidal slider 20 is no longer subjected to the reaction force and slides to the top side of the special-shaped block 14 for limit fixing, thereby avoiding accidents caused by long-term pressing.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nail remover for orthopedic surgery, comprising a grip rod (1), characterized in that: A sleeve (2) is fixedly connected to the middle of the outer wall of the gripping rod (1), a sliding rod (3) is slidably connected to the inside of the gripping rod (1), a sleeve plate (22) is fixedly connected to the middle outer wall of the sliding rod (3), a spring (4) is fixedly connected to the bottom side of the sleeve plate (22), a trapezoidal block (5) is fixedly connected to the bottom side of the sliding rod (3), a T-shaped opening (8) is provided at both left and right ends of the trapezoidal block (5), a connecting rod (6) is fixedly connected to the bottom side of the trapezoidal block (5), and the connecting rod ( The bottom side of the sliding rod (6) is fixedly connected with an arc-shaped rubber plate (7), the left and right ends of the spring one (4) are provided with sliding components, the far sides of the two sliding components are fixedly connected with an arc-shaped strip (11), the middle part of the arc-shaped strip (11) is rotatably connected with a limiting column (12), the top side of the sliding rod (3) is fixedly connected with a cover plate (13), the left and right sides of the cover plate (13) are fixedly connected with special-shaped blocks (14), and the top sides of the left and right ends of the handle (1) are fixedly connected with limiting blocks (15).

2. The nail remover for orthopedic surgery according to claim 1, characterized in that: The top side of the limit block (15) is fixedly connected to a support block (16), a special-shaped opening (21) is provided inside the support block (16), telescopic components are arranged on the far side of the inner wall of the two support blocks (16), square plates (19) are fixedly connected to the front and rear sides of the top of the telescopic components, and trapezoidal sliders (20) are fixedly connected to the adjacent sides of the two telescopic components.

3. The nail remover for orthopedic surgery according to claim 1, characterized in that: The two sliding assemblies each comprise a sliding column (9), the exteriors of the two sliding columns (9) being respectively slidably connected to the inner walls of the left and right ends of the trapezoidal block (5), and the far sides of the two sliding columns (9) being fixedly connected to a connecting block (10).

4. The nail remover for orthopedic surgery according to claim 2, characterized in that: The two telescopic assemblies each comprise a spring 2 (17), the far sides of the two springs 2 (17) being respectively fixedly connected to the far sides of the inner walls of the two support blocks (16), and the near sides of the two springs 2 (17) being fixedly connected to a square block (18).

5. The nail remover for orthopedic surgery according to claim 3, characterized in that: The exteriors of the two connecting blocks (10) are respectively slidably connected to the inner walls of the left and right ends of the trapezoidal block (5), and the exteriors of the connecting blocks (10) are slidably connected to the inner wall of the T-shaped opening (8).

6. The nail remover for orthopedic surgery according to claim 1, characterized in that: The exterior of the two limit posts (12) are respectively fixedly connected to the left and right ends of the bottom of the handle (1), and the exterior of the sleeve plate (22) is slidably connected to the inner wall of the handle (1).

7. The nail remover for orthopedic surgery according to claim 3, characterized in that: The outside of the sliding column (9) is slidably connected to the inside of the T-shaped opening (8), and the bottom side of the spring 1 (4) is fixedly connected to the middle inner wall of the handle (1).

8. The nail remover for orthopedic surgery according to claim 4, characterized in that: The outside of the square block (18) is slidably connected to the inside of the support block (16), and the outside of the trapezoidal sliding block (20) is slidably connected to the inside of the support block (16).

9. The nail remover for orthopedic surgery according to claim 4, characterized in that: The bottom side of the limit block (15) is slidably connected to the top side of the support block (16), and the top ends of the front and rear sides of the two square blocks (18) are respectively fixedly connected to the adjacent sides of the plurality of square plates (19).

10. The nail remover for orthopedic surgery according to claim 4, characterized in that: The far ends of the two special-shaped blocks (14) are in contact with the near ends of the two trapezoidal sliding blocks (20), respectively, and the outside of the square block (18) is slidably connected to the inside of the special-shaped opening (21).

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