An osteotomy nail extractor

Abstract

The present invention relates to the technical field of medical devices, and particularly relates to a nail extractor for orthopedics, which includes a bottom plate. A connecting seat is slidably connected to the top of the bottom plate. Two through grooves are symmetrically formed on both sides inside the connecting seat. Two brackets are slidably connected to the inside of the two through grooves in opposite directions. The other end of the bracket is welded with a connecting ring. A connecting box is slidably connected to the surface of the connecting ring, and a positioning hole is formed on the surface of the connecting ring. Through the sliding action of the connecting box and the connecting ring, the working position of the hexagonal wrench is determined. By performing a certain fine adjustment on the hexagonal wrench, the reliability of its working position is ensured, facilitating the removal of screws at different positions, facilitating the entire work of removing the nail and the steel plate. Moreover, the two sides of the base cooperate with the clamping blocks to wrap and fix the two ends of the calf, providing a certain supporting effect on the two ends of the calf, and preventing the problem of secondary fracture caused by the downward fall of the two ends of the calf, greatly improving the safety.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a nail remover for orthopedics. Background Art

[0002] During the treatment of patients with lower leg fractures or breaks, it is usually necessary to select different fixation plates to lock the fractured parts according to the specific conditions of the patients. The fixation plates will be removed after the patients have rested for a certain period of time. When fixing the plates, screws are needed at both ends of the plates to connect and fix them to the bones. Therefore, the screws need to be removed when removing the plates, and corresponding nail removal equipment is required.

[0003] The existing working method is often to unscrew the screw by holding a hexagonal wrench, and then remove the fixed steel plate. After searching, the invention patent CN202210144165.0, an orthopedic nail remover, is mainly used to solve the problem that the nut is small and difficult to clamp during the process of removing the screw, and the nut is easy to fall off due to unstable clamping when pulling out. However, these methods often have certain problems in specific work:

[0004] Firstly, the fracture site of the tibia is not fixed, it may be the front of the tibia, or the side of the tibia, or even on the side of the calf, and the existing equipment is often fixed on the operating table and can only work on the front of the tibia. Once faced with the work of removing nails from the side, the patient needs to adjust the position, which is troublesome, and the patient may have other complications and cannot lie on the side, making the existing equipment unable to work; secondly, although a long period of rest will be required after the fracture of the tibia to ensure that the steel plate is removed after the tibia is healed, the strength of the healed tibia is relatively low compared to that of the intact tibia. When subjected to stress again, it may fracture again along the tension side of the fracture site. When the existing device lifts the tibia to remove the nails and remove the steel plate, it lacks the corresponding auxiliary support structure, which may cause the two ends of the tibia to fall, increasing the stress on the healing site, and there may be a risk of fracture again, causing further injury to the patient. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose a nail remover for orthopedics.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A nail remover for orthopedics, comprising a bottom plate, a connection seat being slidably connected to the top of the bottom plate, two through slots being symmetrically provided on both sides of the connection seat, two brackets being oppositely slidably connected inside the two through slots, and a connection ring being welded to the other end of the bracket;

[0008] A connection box is slidably connected to the surface of the connection ring. Positioning holes are formed in the surface of the connection ring. A chuck is slidably connected inside the connection box. One end of the chuck penetrating to the bottom of the connection box is inserted into the positioning hole. A positioning plate is slidably connected inside the connection box. Through grooves are formed in both the upper and lower sides of the surface of the connection box. The through grooves are penetrated by the positioning plate. A connection sleeve is slidably connected to the surface of the positioning plate. A hexagonal wrench is threadedly connected inside the connection sleeve. The hexagonal wrench is slidably connected to the connection box. The connection sleeve is slidably connected to the connection box through the through groove;

[0009] A connection groove is formed in the surface of the positioning plate. A connection head is fixedly connected to the surface of the connection sleeve. The connection head is slidably connected to the positioning plate through the connection groove. Four top springs are fixedly connected inside the connection box. A connection block is fixedly connected to the top of the chuck. The other end of the top spring is fixedly connected to the connection block. The top end of the chuck penetrates through the positioning plate. The connection block is located above the positioning plate. The other end of the top spring is fixedly connected to the connection block.

[0010] In the above-mentioned nail extractor for orthopedics, four sliding seats are symmetrically and fixedly connected to both sides of the surface of the bottom plate. A fixed seat is slidably connected to the top of two adjacent sliding seats. A pressure rod is slidably connected inside the fixed seat. A connecting tooth is rotatably connected inside the fixed seat. The connecting tooth meshes with the pressure rod. Tooth teeth are fixedly connected to the top of the sliding seat. The connecting tooth meshes with the sliding seat through the tooth teeth. One end of the pressure rod penetrating to the top of the fixed seat is fixedly connected with a base. Two tension springs are symmetrically and fixedly connected inside the base. The other end of the tension spring is fixedly connected with a clamping block. The clamping block is slidably connected to the base.

[0011] In the above-mentioned nail extractor for orthopedics, an adjusting rod is rotatably connected inside the connection box. An adjusting block is threadedly connected to the surface of the adjusting rod. The adjusting block is fixedly connected to the surface of the connection sleeve. A rotating ring is rotatably connected to one side of the surface of the connection box. The rotating ring is fixedly connected to one end of the adjusting rod.

[0012] In the above-mentioned nail extractor for orthopedics, two clamping blocks are symmetrically hinged inside the hexagonal wrench. Two reed pieces are fixedly connected inside the hexagonal wrench. The two reed pieces are respectively slidably connected to the two clamping blocks.

[0013] In the above-mentioned nail extractor for orthopedics, a plug is fixedly connected to the surface of one of the connection rings. A lock box is fixedly connected to the surface of the other connection ring. A spring clip is slidably connected inside the lock box. The plug is inserted into the lock box, and the bottom of the plug is clamped by the spring clip.

[0014] In the above-mentioned nail extractor for orthopedics, a positioning post is fixedly connected inside the through groove. The positioning post is slidably connected to the support. A return spring is fixedly connected to the surface of the positioning post. The other end of the return spring is fixedly connected to the support.

[0015] In the above-mentioned nail extractor for orthopedics, a top column is fixedly connected inside the fixed seat. The top of the top column is slidably connected inside the pressure rod. A soft spring is fixedly connected to the top of the top column, and the other end of the soft spring is fixedly connected inside the pressure rod.

[0016] In the above-mentioned nail extractor for orthopedics, a slideway is formed on the surface of the bottom plate. The connecting seat is slidably connected to the top of the bottom plate through the slideway, and a fixing bolt is threadedly connected to the surface of the connecting seat.

[0017] Compared with the existing technology, the advantages of this nail extractor for orthopedics are as follows:

[0018] 1. By slidably connecting the box on the surfaces of the two connecting rings, the specific orientation of the hexagon wrench is adjusted. By rotating the rotating ring, the working position of the hexagon wrench can be finely adjusted in cooperation with the adjusting rod, so that screws at different positions can be removed without readjusting the patient's body position, which is convenient for work and improves efficiency.

[0019] 2. By placing both ends of the calf on the top of the base, the two clamping blocks are driven by the tension spring to wrap and fix the calf. During the downward pressing of the pressure rod, the two fixed seats are forced to approach each other, generating a certain thrust on the calf, which can provide a certain support for the calf when removing the nail and the steel plate, preventing the two ends of the calf from dropping and causing the healing site to fracture again, thus improving safety.

[0020] In summary, through the sliding action of the connecting box and the connecting ring, the working position of the hexagon wrench is determined, and through a certain fine adjustment of the hexagon wrench, the reliability of its working position is ensured, which is convenient for removing screws at different positions, facilitating the entire operation of removing the nail and the steel plate. And by wrapping and fixing both ends of the calf with the two bases and the clamping blocks, a certain supporting effect is achieved on both ends of the calf, which can prevent the problem of the two ends of the calf from dropping and causing a second fracture, greatly improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 is a cross-sectional structural schematic diagram of the fixed seat of the present invention;

[0023] Figure 3 is a top cross-sectional structural schematic diagram of the connecting box of the present invention;

[0024] Figure 4 is of the present invention Figure 3 partial enlarged structural schematic diagram at A in;

[0025] Figure 5 is a side cross-sectional structural schematic diagram of the connecting box of the present invention;

[0026] Figure 6 is a schematic diagram of the chuck connection structure of the present invention;

[0027] Figure 7 is a schematic cross-sectional view of the base of the present invention;

[0028] Figure 8 is a schematic cross-sectional view of the through groove of the present invention;

[0029] Figure 9 is a schematic cross-sectional view of the pressure rod of the present invention;

[0030] Figure 10 is a schematic partial cross-sectional view of the hexagonal wrench of the present invention;

[0031] Figure 11 is a schematic cross-sectional view of the lock box of the present invention;

[0032] Figure 12 is of the present invention Figure 11 partial enlarged structure schematic diagram at position B in.

[0033] In the figure: 1, base plate; 2, connecting seat; 3, through groove; 4, support; 5, connecting ring; 6, connecting box; 7, positioning hole; 8, chuck; 9, positioning plate; 10, sliding groove; 11, connecting sleeve; 12, hexagonal wrench; 13, connecting groove; 14, connecting head; 15, top spring; 16, connecting block; 17, sliding seat; 18, fixed seat; 19, pressure rod; 20, connecting teeth; 21, teeth; 22, base; 23, tension spring; 24, clamping block; 25, adjusting rod; 26, adjusting block; 27, rotating ring; 28, clamping block; 29, reed; 30, plug; 31, lock box; 32, spring clip; 33, positioning column; 34, return spring; 35, top column; 36, soft spring; 37, slideway; 38, fixing bolt. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] Refer to Figures 1-12, An extractor for orthopedics, comprising a bottom plate 1. A connecting seat 2 is slidably connected to the top of the bottom plate 1. Two through grooves 3 are symmetrically formed on both sides inside the connecting seat 2. Two brackets 4 are slidably connected to the inside of the two through grooves 3 in opposite directions. The other end of the bracket 4 is welded with a connecting ring 5. A connecting box 6 is slidably connected to the surface of the connecting ring 5. A positioning hole 7 is formed on the surface of the connecting ring 5. A chuck 8 is slidably connected to the inside of the connecting box 6. One end of the chuck 8 penetrating to the bottom of the connecting box 6 is inserted into the positioning hole 7. A positioning plate 9 is slidably connected to the inside of the connecting box 6. Through grooves 10 are formed through the upper and lower sides of the surface of the connecting box 6. The through grooves 10 are arranged through the positioning plate 9. A connecting sleeve 11 is slidably connected to the surface of the positioning plate 9. A hexagonal wrench 12 is threadedly connected to the inside of the connecting sleeve 11. The hexagonal wrench 12 is slidably connected to the connecting box 6. The connecting sleeve 11 is slidably connected to the connecting box 6 through the through groove 10. A connecting groove 13 is formed on the surface of the positioning plate 9. A connecting head 14 is fixedly connected to the surface of the connecting sleeve 11. The connecting head 14 is slidably connected to the positioning plate 9 through the connecting groove 13. Four top springs 15 are fixedly connected to the inside of the connecting box 6. A connecting block 16 is fixedly connected to the top of the chuck 8. The other end of the top spring 15 is fixedly connected to the connecting block 16. The top end of the chuck 8 penetrates through the positioning plate 9. The connecting block 16 is located above the positioning plate 9. The other end of the top spring 15 is fixedly connected to the connecting block 16.

[0037] Among them, after the patient's calf is fixed, the connecting sleeve 11 is pulled to force the positioning plate 9 and the connecting block 16 to slide. At this time, the chuck 8 is separated from the initial positioning hole 7, and the entire connecting box 6 is slid along the connecting ring 5, so that the connecting box 6 drives the hexagonal wrench 12 to move to a suitable position until the hexagonal wrench 12 can correspond to the position of the screw. Since when the chuck 8 is separated from the positioning hole 7, the connecting block 16 will squeeze the top spring 15, and at the appropriate position, the top spring 15 will push the connecting block 16 through elastic deformation, so as to force the chuck 8 to be re-connected and fixed with the positioning hole 7, which can facilitate the removal of screws at different positions on the surface of the calf bone, making the operation of the entire device no longer limited to a fixed direction and facilitating the work.

[0038] A regulating rod 25 is rotatably connected to the inside of the connecting box 6. A regulating block 26 is threadedly connected to the surface of the regulating rod 25. The regulating block 26 is fixedly connected to the surface of the connecting sleeve 11. A rotating ring 27 is rotatably connected to one side of the surface of the connecting box 6. The rotating ring 27 is fixedly connected to one end of the regulating rod 25. Since the positions where the screws are fixed are not necessarily distributed in a straight line along the direction of the calf bone, there may be an angular deviation, and the connection between the chuck 8 and different positioning holes 7 is not sufficient to adapt to this part of the deviation. Then, rotating the rotating ring 27 to regulate the rod 25 can slightly adjust the position of the connecting sleeve 11, so that the hexagonal wrench 12 can accurately adapt to the position of the screw.

[0039] Two clamping blocks 28 are symmetrically hinged inside the hexagonal wrench 12. Two reed pieces 29 are fixedly connected inside the hexagonal wrench 12. The two reed pieces 29 are respectively slidably connected to the two clamping blocks 28. Since at the initial stage of unscrewing the screw, one end of the hexagonal wrench 12 will press against the hexagonal force groove on the surface of the screw, but there may be excessive pressing that causes unnecessary pressure on the bone surface. The contact and separation between the two clamping blocks 28 and the notch on the screw surface can determine the contact state between the hexagonal wrench 12 and the screw, and prevent the screw from falling during the subsequent screwing process.

[0040] A plug 30 is fixedly connected to the surface of one of the connecting rings 5. A lock box 31 is fixedly connected to the surface of the other connecting ring 5. A spring clip 32 is slidably connected inside the lock box 31. The plug 30 is inserted into the lock box 31, and the bottom of the plug 30 is clamped by the spring clip 32. After the patient's calf is fixed, the two connecting rings 5 will be butted against each other to form a closed ring. To ensure the stability of the butt joint, at this time, the plug 30 is inserted into the lock box 31, and the bottom of the plug 30 is stably clamped by the spring clip 32, which can ensure the stability of the connection between the two connecting rings 5 and prevent automatic detachment during use.

[0041] A positioning post 33 is fixedly connected inside the through groove 3. The positioning post 33 is slidably connected to the bracket 4. A return spring 34 is fixedly connected to the surface of the positioning post 33. The other end of the return spring 34 is fixedly connected to the bracket 4. When the two brackets 4 drive the connecting rings 5 to separate from each other, the return spring 34 will be compressed and in a tense state, then the return spring 34 can push the two brackets 4 to automatically reset through its own elastic force.

[0042] A slideway 37 is opened on the surface of the bottom plate 1. The connecting seat 2 is slidably connected to the top of the bottom plate 1 through the slideway 37. A fixing bolt 38 is threadedly connected to the surface of the connecting seat 2. Since when fixing the fracture of the calf bone, a steel plate is needed to connect the intact leg bones at both ends of the fracture, the positions of the screws are not in the same position, and there is a certain distance between the two ends of the steel plate. Then, during the process of removing the screws, the position of the hexagonal wrench 12 needs to be adjusted according to the position of the screws. The slideway 37 can facilitate the movement of the entire connecting seat 2 on the top of the bottom plate 1.

[0043] Refer to Figures 1-12, on both sides of the surface of the bottom plate 1, four sliding seats 17 are symmetrically and fixedly connected. A fixed seat 18 is slidably connected to the top of two adjacent sliding seats 17. A pressing rod 19 is slidably connected to the inside of the fixed seat 18. A connecting gear 20 is rotatably connected to the inside of the fixed seat 18. The connecting gear 20 meshes with the pressing rod 19. A tooth 21 is fixedly connected to the top of the sliding seat 17. The connecting gear 20 meshes with the sliding seat 17 through the tooth 21. One end of the pressing rod 19 passing through the top of the fixed seat 18 is fixedly connected to a base 22. Two tension springs 23 are symmetrically and fixedly connected to the inside of the base 22. The other end of the tension spring 23 is fixedly connected to a clamping block 24. The clamping block 24 is slidably connected to the base 22.

[0044] Among them, separate the clamping blocks 24 on both sides of the base 22 to both sides. After the patient's calf is placed on the surface of the base 22, drive the two clamping blocks 24 to approach each other through the tension springs 23, so as to clamp and fix the patient's calf. Due to the weight of the patient's calf, the pressing rod 19 will be pressed down, and the connecting gear 20 will be driven to rotate through the meshing action. Since the connecting gear 20 and the sliding seat 17 are meshed through the tooth 21 in the middle, the two fixed seats 18 on both sides will slide towards each other along the sliding seat 17 and approach each other, so as to fix and provide a certain support for the patient's calf, preventing the two ends from sagging and generating too much pressure on the healed fracture, and avoiding secondary injuries.

[0045] A top column 35 is fixedly connected to the inside of the fixed seat 18. The top of the top column 35 is slidably connected to the inside of the pressing rod 19. The top of the top column 35 is fixedly connected to a soft spring 36. The other end of the soft spring 36 is fixedly connected to the inside of the pressing rod 19. During the downward pressing process of the pressing rod 19, the soft spring 36 will be compressed. After the calf is separated from the base 22, the soft spring 36 will automatically push the pressing rod 19 to reset.

[0046] The following makes a detailed explanation of the specific working principle and usage method of the present invention: When in use, in the first step, separate the clamping blocks 24 on both sides of the base 22 and separate the two connecting rings 5. After the patient's calf is placed on the surface of the base 22, drive the two clamping blocks 24 to approach each other through the tension springs 23, so as to clamp and fix the patient's calf. Due to the weight of the patient's calf, the pressing rod 19 will be pressed down, and the connecting gear 20 will be driven to rotate through the meshing action. Since the connecting gear 20 and the sliding seat 17 are meshed through the tooth 21 in the middle, the two fixed seats 18 on both sides will slide towards each other along the sliding seat 17 and approach each other, so as to fix and provide a certain support for the patient's calf;

[0047] In the second step, after the patient's calf is fixed, the connecting sleeve 11 is pulled to force the positioning plate 9 and the connecting block 16 to slide. At this time, the chuck 8 is separated from the initial positioning hole 7, and the entire connecting box 6 is slid along the connecting ring 5, so that the connecting box 6 drives the hexagonal wrench 12 to move to a suitable position until the hexagonal wrench 12 corresponds to the position of the screw. Since the connecting block 16 will squeeze the top spring 15 when the chuck 8 is separated from the positioning hole 7, the top spring 15 will push the connecting block 16 through elastic deformation after the connecting sleeve 11 is released, thereby forcing the chuck 8 to be re-locked and fixed with the positioning hole 7;

[0048] In the third step, the adjusting rod 25 is rotated through the swivel ring 27, and the connecting sleeve 11 and the hexagonal wrench 12 are driven to perform a small sliding through the effect of threaded connection to ensure that the hexagonal wrench 12 and the screw can be accurately docked. Then, when the hexagonal wrench 12 approaches the screw, the two clamping blocks 28 will be clamped with the notch on the surface of the screw through the pushing effect of the reed 29. Finally, by turning the hexagonal wrench 12 to make it contract towards the inside of the connecting sleeve 11, the screw can be removed.

[0049] Further explanation, the above fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0050] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An extractor for orthopedics, comprising a bottom plate (1), characterized in that: A connecting seat (2) is slidably connected to the top of the bottom plate (1). Two through grooves (3) are symmetrically formed on both sides inside the connecting seat (2). Two brackets (4) are slidably connected to the inside of the two through grooves (3) in opposite directions. The other ends of the brackets (4) are welded with connecting rings (5). The two connecting rings (5) are docked with each other to form a closed ring. A connecting box (6) is slidably connected to the surface of the connecting ring (5). A positioning hole (7) is formed on the surface of the connecting ring (5). A chuck (8) is slidably connected to the inside of the connecting box (6). One end of the chuck (8) passing through the bottom of the connecting box (6) is inserted into the positioning hole (7). A positioning plate (9) is slidably connected to the inside of the connecting box (6). Through grooves (10) are formed through the upper and lower sides of the surface of the connecting box (6). The through grooves (10) are penetrated by the positioning plate (9). A connecting sleeve (11) is slidably connected to the surface of the positioning plate (9). A hexagonal wrench (12) is threadedly connected to the inside of the connecting sleeve (11). The hexagonal wrench (12) is slidably connected to the connecting box (6). The connecting sleeve (11) is slidably connected to the connecting box (6) through the through grooves (10). A connecting groove (13) is formed on the surface of the positioning plate (9). A connecting head (14) is fixedly connected to the surface of the connecting sleeve (11). The connecting head (14) is slidably connected to the positioning plate (9) through the connecting groove (13). Four top springs (15) are fixedly connected to the inside of the connecting box (6). A connecting block (16) is fixedly connected to the top of the chuck (8). The other end of the top spring (15) is fixedly connected to the connecting block (16). The top end of the chuck (8) penetrates through the positioning plate (9). The connecting block (16) is located above the positioning plate (9). Four sliding seats (17) are symmetrically and fixedly connected to both sides of the surface of the bottom plate (1). A fixing seat (18) is slidably connected to the top of two adjacent sliding seats (17). A pressing rod (19) is slidably connected to the inside of the fixing seat (18). A connecting tooth (20) is rotatably connected to the inside of the fixing seat (18). The connecting tooth (20) meshes with the pressing rod (19). Teeth (21) are fixedly connected to the top of the sliding seat (17). The connecting tooth (20) meshes with the sliding seat (17) through the teeth (21). One end of the pressing rod (19) passing through the top of the fixing seat (18) is fixedly connected to a base (22). Two tension springs (23) are symmetrically and fixedly connected to the inside of the base (22). The other ends of the tension springs (23) are fixedly connected to clamping blocks (24). The clamping blocks (24) are slidably connected to the base (22). When the pressing rod (19) is pressed down, the connecting tooth (20) is driven to rotate through the meshing action, and the fixing seats (18) on both sides slide towards each other along the sliding seats (17) and approach each other.

2. The nail extractor for orthopedics according to claim 1, characterized in that: An adjusting rod (25) is rotatably connected to the inside of the connecting box (6). An adjusting block (26) is threadedly connected to the surface of the adjusting rod (25). The adjusting block (26) is fixedly connected to the surface of the connecting sleeve (11). A rotating ring (27) is rotatably connected to one side of the surface of the connecting box (6). The rotating ring (27) is fixedly connected to one end of the adjusting rod (25).

3. The nail extractor for orthopedics according to claim 1, characterized in that: Inside the hexagonal wrench (12), two clamping blocks (28) are symmetrically hinged, and two reed pieces (29) are fixedly connected inside the hexagonal wrench (12). The two reed pieces (29) are respectively slidably connected to the two clamping blocks (28).

4. The nail extractor for orthopedics according to claim 1, wherein: On the surface of one of the connecting rings (5), a plug (30) is fixedly connected. On the surface of the other connecting ring (5), a lock box (31) is fixedly connected. Inside the lock box (31), a spring clip (32) is slidably connected. The plug (30) is inserted into the lock box (31), and the bottom of the plug (30) is clamped with the spring clip (32).

5. A nail extractor for orthopedics according to claim 1, characterized in that: Inside the through groove (3), a positioning post (33) is fixedly connected. The positioning post (33) is slidably connected to the bracket (4). On the surface of the positioning post (33), a return spring (34) is fixedly connected. The other end of the return spring (34) is fixedly connected to the bracket (4).

6. The nail extractor for orthopedics according to claim 1, characterized in that: On the surface of the bottom plate (1), a slideway (37) is provided. The connecting seat (2) is slidably connected to the top of the bottom plate (1) through the slideway (37). A fixing bolt (38) is threadedly connected to the surface of the connecting seat (2).

7. The nail extractor for orthopedics according to claim 1, characterized in that: Inside the fixed seat (18), a top post (35) is fixedly connected. The top of the top post (35) is slidably connected inside the pressure rod (19). On the top of the top post (35), a soft spring (36) is fixedly connected. The other end of the soft spring (36) is fixedly connected inside the pressure rod (19).

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