Orthopedic nail removal device

Abstract

The present invention relates to the technical field related to medical devices, specifically, an orthopedic nail removal device, comprising a frame and a physiotherapy bed arranged inside the frame, a mounting shell is fixedly arranged at the bottom of the piston rod in the first cylinder, and a clamping assembly is arranged inside the mounting shell; a driving assembly is arranged at the top of the frame; a rotating shaft is rotatably arranged in the middle of the frame, a supporting frame is fixedly arranged outside the rotating shaft, and a placement plate is arranged at one end of the supporting frame; a rotating assembly is arranged inside the frame, and a limiting assembly is arranged inside the frame. Through the provided supporting frame and placement plate, after the clamping assembly completes the nail removal work and moves to the leftmost end of the frame, under the action of the rotating assembly, the placement plate can be moved to the bottom of the clamping assembly, and after the clamping assembly releases the bone nail, the bone nail can fall into the inside of the placement plate, accurately receiving the bone nail, replacing the manual receiving method of medical staff, and preventing the bone nail from falling down to the physiotherapy bed or the ground, bringing convenience to medical staff.

Description

Technical Field

[0001] The invention relates to the technical field related to medical devices, in particular to an orthopedic nail removal device. Background Art

[0002] In hospital clinical practice, fracture is one of the common diseases. The commonly used method for treating fracture is to reposition the fractured part and then connect the repositioned bones with bone plates and bone screws. After the bones grow together, the bone screws previously driven into the bones must be removed.

[0003] For example, a nail removal device for orthopedics proposed in a Chinese patent (CN112220549B) is used. When the device needs to be used to remove a bone screw, the part of the patient where the nail needs to be removed is placed in the middle above the support pad. When the rotating ring is rotated, the first connecting block will be driven to move downward. When the first connecting block moves downward, the clamping grooves will be placed on both sides of the bone screw that needs to be removed. Then the movable plate is pushed upward so that the clamping groove and the bone screw are tightly fitted to complete the clamping. When the rotating ring is rotated in the opposite direction, the first connecting block will move upward, thereby removing the bone screw from the patient's body.

[0004] In the prior art, after the bone screws are extracted, medical staff are required to take the bone screws in the clamping grooves. When the two sets of clamping plates are separated, if the medical staff fails to accurately take the bone screws, the bone screws may fall down onto the support pads or the ground. Since the bone screws carry the patient's blood, the support pads or the ground need to be cleaned to avoid cross infection, which causes inconvenience to the medical staff. Summary of the invention

[0005] The purpose of the present invention is to provide an orthopedic nail removal device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An orthopedic nail removal device comprises a frame and a physiotherapy bed arranged inside the frame, wherein a mounting seat is arranged at the top of the frame, a first cylinder is arranged at the front of the mounting seat, a mounting shell is fixedly arranged at the bottom of a piston rod in the first cylinder, a clamping assembly is arranged inside the mounting shell, and is used to clamp a bone nail in a patient's body, and cooperate with the first cylinder to pull out the bone nail in the patient's body;

[0008] A driving assembly is provided at the top of the frame, which is used to drive the movement of the mounting seat, and further drive the left and right movement of the mounting shell and the clamping assembly;

[0009] A rotating shaft is rotatably arranged in the middle of the frame, a supporting frame is fixedly arranged outside the rotating shaft, and a placing plate is arranged at one end of the supporting frame for storing bone screws extracted from the patient's body;

[0010] A rotating assembly is disposed inside the frame, and a limiting assembly is disposed inside the frame. When the mounting seat moves to the end portion close to the placement plate, the mounting seat touches the limiting assembly to release the limiting of the rotating assembly, so that the rotating shaft drives the supporting frame and the placement plate to rotate to the bottom of the clamping assembly to receive the bone screws.

[0011] The subject as described above: the clamping assembly includes a second cylinder fixedly arranged inside the mounting shell and two clamping claws rotatably arranged inside the mounting shell, a transmission gear is fixedly arranged on the front side of the clamping claw, a first rack is fixedly arranged on the top of the piston rod in the second cylinder, the first rack is arranged between the two transmission gears and meshes with the two transmission gears, and arc grooves are provided at the bottoms of the opposite sides of the two clamping claws.

[0012] As described above, a first limiting groove is provided on the front side of the first rack, a limiting strip is fixedly provided on the top of the mounting shell, and the first limiting groove cooperates with the limiting strip.

[0013] The subject matter as described above: the driving assembly includes a driving motor, a threaded rod and a limit rod, the driving motor is fixedly arranged inside the frame, and the output shaft is connected to the threaded rod, the threaded rod is rotatably arranged inside the frame, the limit rod is fixedly arranged inside the frame, the mounting seat is threadedly connected to the threaded rod, and the sliding sleeve is arranged on the outside of the limit rod.

[0014] The subject matter described above: the rotating assembly is composed of a transmission mechanism and a driving mechanism;

[0015] The transmission mechanism comprises a gear set, a sliding rod is fixedly arranged on the inner wall of the frame, a second rack is arranged on the outer sliding sleeve of the sliding rod, and a first spring is arranged on the outer side of one end of the sliding rod.

[0016] As described above, the gear set is composed of three gears, and the three gears are meshed with each other, the gear at the rear end is meshed with the second rack, and the gear at the front end is fixedly arranged outside the rotating shaft.

[0017] As described above, a second limiting groove is formed on the side wall of the frame close to the second rack, and an end of the second rack away from the gear set is arranged inside the second limiting groove.

[0018] As described above, the pushing mechanism includes a fixed block fixedly arranged on the top of the second rack, a push rod is rotatably arranged on the back of the mounting seat, the position of the push rod corresponds to that of the fixed block, and a plurality of second springs are arranged between one side of the push rod and one side of the mounting seat.

[0019] As described above, the limiting assembly includes an L-shaped rod, a plurality of third springs are arranged between the top of the L-shaped rod and the inner wall of the frame, a wedge block is fixedly arranged at one end of the bottom of the L-shaped rod, and a slot is opened at one end of the second rack.

[0020] As described above, the support frame is composed of a mounting ring and a side bracket, the mounting ring and the side bracket are fixedly connected by bolts, and a placement groove is provided inside the side bracket for placing the disk.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: through the support frame and the placement tray, after the clamping assembly completes the nail removal work and moves to the leftmost end of the frame, the placement tray can be moved to the bottom of the clamping assembly under the action of the rotating assembly, and after the clamping assembly releases the bone nail, the bone nail can fall into the inside of the placement tray, and the bone nail is accurately received, replacing the manual receiving method of medical staff, avoiding the problem of cross infection caused by the bone nail falling down to the physical therapy bed or the ground, and no need for medical staff to clean the physical therapy bed or the ground, which brings convenience to medical staff;

[0022] Through the set pushing mechanism, when lowering the bone screw in the clamping assembly, the mounting seat needs to move to the far left end of the frame and contact the limit assembly to release the limit on the second rack. At this time, the push rod and the fixed block are misaligned. Then, when the mounting seat is reset to the right, the push rod is driven to move, and the fixed block and the second rack are pushed to move to the right and reset. If the mounting seat only drives the clamping assembly to make the push rod contact the fixed block during the nail removal work, the mounting seat will not move to the far left end of the frame at this time, and the second rack will be fixed. When the push rod contacts the fixed block, the push rod will change under the action of the second spring, but the second rack will not move, so it will not affect the transmission mechanism, and the placement plate will not flip over. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front view of the orthopedic nail removal device.

[0024] Figure 2 This is a schematic diagram of the structure inside the top of the frame of an orthopedic nail removal device.

[0025] Figure 3 This is a schematic diagram of the structure of the clamping assembly in an orthopedic nail removal device.

[0026] Figure 4 This is a top view of the mounting seat in the orthopedic nail removal device.

[0027] Figure 5 This is a partial enlarged view of part A in the orthopedic nail removal device.

[0028] Figure 6 This is a schematic diagram of the structure of the top part of the frame in the orthopedic nail removal device.

[0029] Figure 7 This is a schematic diagram of the structure of the limiting component in the orthopedic nail removal device.

[0030] Figure 8 This is a partial top view of the top of the frame of the orthopedic nail removal device.

[0031] Fig. 9 It is a structural schematic diagram of the transmission mechanism in the orthopedic nail removal device.

[0032] Fig.10 This is a schematic diagram of the structure of the support frame and placement plate in the orthopedic nail removal device.

[0033] In the figure: 1, frame; 2, physiotherapy bed; 3, mounting seat; 4, first cylinder; 5, mounting shell; 6, clamping assembly; 61, second cylinder; 62, clamping claw; 63, transmission gear; 64, first rack; 65, arc groove; 7, driving assembly; 71, driving motor; 72, threaded rod; 73, limit rod; 8, rotating shaft; 9, supporting frame; 91, mounting ring; 92, side bracket; 10, placement plate; 11, rotating assembly ; 111, transmission mechanism; 1111, gear set; 1112, sliding rod; 1113, second rack; 1114, first spring; 112, pushing mechanism; 1121, fixing block; 1122, pushing rod; 1123, second spring; 12, limiting assembly; 121, L-shaped rod; 122, third spring; 123, wedge block; 124, slot; 13, first limiting slot; 14, limiting strip; 15, second limiting slot. DETAILED DESCRIPTION

[0034] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0035] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0036] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0037] See also Figure 1-10In an embodiment of the present invention, an orthopedic nail removal device includes a frame 1 and a physiotherapy bed 2 arranged inside the frame 1, a mounting seat 3 is arranged at the top of the frame 1, a first cylinder 4 is arranged on the front of the mounting seat 3, a mounting shell 5 is fixedly arranged at the bottom of the piston rod in the first cylinder 4, and a clamping assembly 6 is arranged inside the mounting shell 5 for clamping the bone nail in the patient's body, and cooperates with the first cylinder 4 to pull out the bone nail in the patient's body;

[0038] A driving assembly 7 is provided at the top of the frame 1, which is used to drive the movement of the mounting seat 3, and then drive the mounting shell 5 and the clamping assembly 6 to move left and right;

[0039] A rotating shaft 8 is rotatably arranged in the middle of the frame 1, a supporting frame 9 is fixedly arranged outside the rotating shaft 8, and a placing tray 10 is arranged at one end of the supporting frame 9 for storing bone screws extracted from the patient's body;

[0040] A rotating assembly 11 is disposed inside the frame 1, and a limiting assembly 12 is disposed inside the frame 1. When the mounting seat 3 moves to the end close to the placement plate 10, the mounting seat 3 touches the limiting assembly 12 to release the limit on the rotating assembly 11, so that the rotating shaft 8 drives the supporting frame 9 and the placement plate 10 to rotate to the bottom of the clamping assembly 6 to receive the bone screw;

[0041] In the initial state, the mounting seat 3, the mounting shell 5 and the clamping assembly 6 are located directly above the physiotherapy bed 2. When in use, the patient sits on the physiotherapy bed 2, and the position where the nail needs to be removed is located between the frame 1. The driving assembly 7 is then used to move the mounting seat 3, the mounting shell 5 and the clamping assembly 6. After moving to the position where the nail needs to be removed, the first cylinder 4 is used to push the mounting shell 5 and the clamping assembly 6 to descend. After the clamping assembly 6 is used to clamp the bone nail in the patient's body, the first cylinder 4 drives the clamping assembly 6 and the bone nail to rise and reset, and the bone nail is taken out of the patient's body. Then, under the action of the driving assembly 7, it moves to the leftmost end of the frame 1. At this time, the mounting seat 3 The top of the rotating assembly 8 touches the limiting assembly 12, thereby releasing the limiting of the rotating assembly 11, and the rotating shaft 8 rotates under the action of the rotating assembly 11, and the rotating shaft 8 drives the supporting frame 9 and the placing tray 10 to rotate counterclockwise, so that the placing tray 10 moves to the bottom of the clamping assembly 6. At this time, the clamping assembly 6 can no longer clamp the bone screw, so that the bone screw falls into the placing tray 10, and then the driving assembly 7 drives the clamping assembly 6 to move to the right again to remove the screw or restore it to the initial position. At this time, the rotating shaft 8 drives the supporting frame 9 and the placing tray 10 to reset under the action of the rotating assembly 11, so that the medical staff can take the bone screw in the placing tray 10;

[0042] Through the support frame 9 and the placement tray 10, after the clamping assembly 6 completes the nail removal work and moves to the leftmost end of the frame 1, under the action of the rotating assembly 11, the placement tray 10 can be moved to the bottom of the clamping assembly 6. After the clamping assembly 6 releases the bone nail, the bone nail can fall into the inside of the placement tray 10, accurately receiving the bone nail, replacing the manual reception method of medical staff, avoiding the problem of cross infection caused by the bone nail falling down to the physiotherapy bed 2 or the ground, and no need for medical staff to clean the physiotherapy bed 2 or the ground, bringing convenience to medical staff.

[0043] See also Figure 3 The clamping assembly 6 includes a second cylinder 61 fixedly arranged inside the mounting shell 5 and two clamping claws 62 rotatably arranged inside the mounting shell 5. A transmission gear 63 is fixedly arranged on the front of the clamping claw 62. A first rack 64 is fixedly arranged on the top of the piston rod in the second cylinder 61. The first rack 64 is arranged between the two transmission gears 63 and meshes with the two transmission gears 63. The bottoms of the opposite sides of the two clamping claws 62 are both provided with arc grooves 65.

[0044] A first limiting groove 13 is formed on the front of the first rack 64, and a limiting strip 14 is fixedly disposed on the top of the mounting shell 5, and the first limiting groove 13 cooperates with the limiting strip 14;

[0045] When clamping the bone screw, the second cylinder 61 pushes the first rack 64 to rise. Under the meshing action of the first rack 64 and the two transmission gears 63, the two transmission gears 63 rotate, thereby driving the two clamping claws 62 to rotate inward. The bottoms of the two clamping claws 62 are close to each other, so that the bone screw is located inside the arc groove 65. Then, the first cylinder 4 drives the mounting shell 5 to rise, and the clamping assembly 6 rises synchronously to complete the nail removal work. When releasing the bone screw, the second cylinder 61 pushes the first rack 64 to fall, and the two clamping claws 62 expand outward to release the bone screw.

[0046] With the cooperation of the limiting bar 14 and the first limiting groove 13 , the first rack 64 can achieve a stable up and down movement effect, thereby ensuring the meshing effect between the first rack 64 and the transmission gear 63 .

[0047] See also Figure 2 The driving assembly 7 includes a driving motor 71, a threaded rod 72 and a limiting rod 73. The driving motor 71 is fixedly arranged inside the frame 1, and the output shaft is connected to the threaded rod 72. The threaded rod 72 is rotatably arranged inside the frame 1. The limiting rod 73 is fixedly arranged inside the frame 1. The mounting seat 3 is threadedly connected to the threaded rod 72, and a sliding sleeve is arranged outside the limiting rod 73.

[0048] By starting the driving motor 71, the threaded rod 72 rotates. At the same time, under the action of the limiting rod 73, the mounting seat 3, the mounting shell 5 and the clamping assembly 6 can move left and right along the limiting rod 73 to adjust the position of the clamping assembly 6, so that nails can be removed from different affected areas.

[0049] See also Figure 5 , Figure 6 , Figure 8 and Fig. 9 , the rotating assembly 11 is composed of a transmission mechanism 111 and a driving mechanism 112;

[0050] The transmission mechanism 111 includes a gear set 1111, a slide bar 1112 is fixedly arranged on the inner wall of the frame 1, a second rack 1113 is arranged on the outer sliding sleeve of the slide bar 1112, and a first spring 1114 is arranged on the outer side of one end of the slide bar 1112;

[0051] The gear set 1111 is composed of three gears, and the three gears are meshed with each other. The gear at the rear end is meshed with the second rack 1113, and the gear at the front end is fixedly arranged outside the rotating shaft 8.

[0052] When the mounting base 3 moves to the leftmost end, the top of the mounting base 3 touches the limiting component 12, and the limiting component 12 releases the limit on the rotating component 11. At this time, the second rack 1113 moves to the left under the action of the first spring 1114, so that the rearmost gear in the gear set 1111 rotates counterclockwise, the middle gear in the gear set 1111 rotates clockwise, and the gear fixed on the outside of the rotating shaft 8 rotates counterclockwise, thereby driving the supporting frame 9 and the placement plate 10 to rotate counterclockwise to the bottom of the clamping component 6. When the clamping component 6 is reset, as the mounting base 3 moves, the pushing mechanism 112 pushes the second rack 1113 to move to the right, squeezing the first spring 1114. At this time, under the action of the gear set 1111, the placement plate 10 rotates clockwise to reset until the second rack 1113 cooperates with the limiting component 12 and is fixed;

[0053] A second limiting groove 15 is provided on the side wall of the frame 1 close to the second rack 1113. One end of the second rack 1113 away from the gear set 1111 is arranged inside the second limiting groove 15. Through the second limiting groove 15, when the second rack 1113 moves, it moves along the second limiting groove 15 and does not rotate, thereby ensuring the meshing effect between the second rack 1113 and the rearmost gear in the gear set 1111.

[0054] The pushing mechanism 112 includes a fixed block 1121 fixedly arranged on the top of the second rack 1113, a push rod 1122 is rotatably arranged on the back of the mounting seat 3, the push rod 1122 corresponds to the position of the fixed block 1121, and a plurality of second springs 1123 are arranged between one side of the push rod 1122 and one side of the mounting seat 3;

[0055] When the driving assembly 7 drives the mounting seat 3 to move to the left through the pushing mechanism 112, when the push rod 1122 contacts the fixing block 1121, due to the rotational connection between the push rod 1122 and the mounting seat 3 and the fixation of the second rack 1113, as the mounting seat 3 continues to move, the push rod 1122 will flip over and squeeze the second spring 1123. When the push rod 1122 and the fixing block 1121 are misaligned, the push rod 1122 will reset under the action of the second spring 1123. When the bone screw in the clamping assembly 6 is lowered, the mounting seat 3 needs to move to the leftmost end of the frame 1 and contact with the limiting assembly 12 to release the limit on the second rack 1113. At this time, the push rod 1122 and the fixing block 1121 are misaligned. The fixed block 1121 is misplaced, and then when the mounting seat 3 is reset to the right, the push rod 1122 is driven to move. The elastic force composed of the second springs 1123 is greater than the elastic force of the first spring 1114, so when the push rod 1122 moves to the right, the push rod 1122 will push the fixed block 1121 and the second rack 1113 to move to the right and reset. If the mounting seat 3 only drives the clamping assembly 6 to make the push rod 1122 contact the fixed block 1121 during the nail removal work, the mounting seat 3 will not move to the leftmost end of the frame 1 at this time, the push rod 1122 will flip over a certain angle, and will not be misplaced with the fixed block 1121, so it will not affect the transmission mechanism 111, and the placement plate 10 will not flip over.

[0056] See also Figure 7 and Fig. 9 The limiting assembly 12 includes an L-shaped rod 121, a plurality of third springs 122 are arranged between the top of the L-shaped rod 121 and the inner wall of the frame 1, a wedge block 123 is fixedly arranged at one end of the bottom of the L-shaped rod 121, and a slot 124 is opened at one end of the second rack 1113;

[0057] When the mounting base 3 moves to the leftmost end, it touches the wedge block 123. The wedge block 123 is forced to drive the L-shaped rod 121 to move upward, squeezing the third spring 122. At this time, the L-shaped rod 121 is disengaged from the slot 124 in the second rack 1113, so the second rack 1113 can move to the left under the action of the second spring 1123, and then as the mounting base 3 moves to the right, the pushing mechanism 112 is cooperated to move the second rack 1113 to the right again, until the bottom of the L-shaped rod 121 corresponds to the slot 124, and the L-shaped rod 121 is re-engaged in the slot 124 under the action of the third spring 122, and the second rack 1113 is fixed again.

[0058] See also Fig.10 The support frame 9 is composed of a mounting ring 91 and a side bracket 92, the mounting ring 91 and the side bracket 92 are fixedly connected by bolts, and a placement groove is provided inside the side bracket 92 for placing the disk 10;

[0059] After the mounting ring 91 and the side bracket 92 are fixed to the outside of the rotating shaft 8 by bolts, the supporting frame 9 as a whole can rotate along with the rotating shaft 8. By opening a placement groove inside the side bracket 92, the placement tray 10 can be easily taken out, thereby making it convenient for medical staff to clean or replace the placement tray 10.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0061] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An orthopedic nail removal device, comprising a frame (1) and a physiotherapy bed (2) arranged inside the frame (1), characterized in that: The top of the frame (1) is provided with a mounting seat (3), the front of the mounting seat (3) is provided with a first cylinder (4), the bottom of the piston rod in the first cylinder (4) is fixedly provided with a mounting shell (5), and the interior of the mounting shell (5) is provided with a clamping assembly (6) for clamping a bone screw in a patient's body and cooperating with the first cylinder (4) to pull out the bone screw in the patient's body; A driving assembly (7) is provided at the top end of the frame (1) for driving the movement of the mounting seat (3), thereby driving the left and right movement of the mounting shell (5) and the clamping assembly (6); A rotating shaft (8) is rotatably arranged in the middle of the frame (1), a supporting frame (9) is fixedly arranged outside the rotating shaft (8), and a placement tray (10) is arranged at one end of the supporting frame (9) for storing bone screws extracted from the patient's body; A rotating assembly (11) is disposed inside the frame (1), and a limiting assembly (12) is disposed inside the frame (1); when the mounting seat (3) moves to the end close to the placement plate (10), the mounting seat (3) touches the limiting assembly (12) to release the limiting of the rotating assembly (11), so that the rotating shaft (8) drives the supporting frame (9) and the placement plate (10) to rotate to the bottom of the clamping assembly (6) to receive the bone screw; The clamping assembly (6) comprises a second cylinder (61) fixedly arranged inside the mounting shell (5) and two clamping claws (62) rotatably arranged inside the mounting shell (5); a transmission gear (63) is fixedly arranged on the front side of the clamping claw (62); a first rack (64) is fixedly arranged on the top of the piston rod in the second cylinder (61); the first rack (64) is arranged between the two transmission gears (63) and meshes with the two transmission gears (63); arc grooves (65) are provided at the bottoms of the opposite sides of the two clamping claws (62); A first limiting groove (13) is provided on the front surface of the first rack (64), a limiting strip (14) is fixedly provided on the top of the mounting shell (5), and the first limiting groove (13) cooperates with the limiting strip (14); The driving assembly (7) comprises a driving motor (71), a threaded rod (72) and a limiting rod (73); the driving motor (71) is fixedly arranged inside the frame (1), and the output shaft is connected to the threaded rod (72); the threaded rod (72) is rotatably arranged inside the frame (1); the limiting rod (73) is fixedly arranged inside the frame (1); the mounting seat (3) is threadedly connected to the threaded rod (72), and is slidably sleeved outside the limiting rod (73); The rotating assembly (11) is composed of a transmission mechanism (111) and a driving mechanism (112); The transmission mechanism (111) comprises a gear set (1111), a sliding rod (1112) is fixedly arranged on the inner wall of the frame (1), an outer sliding sleeve of the sliding rod (1112) is provided with a second rack (1113), and a first spring (1114) is arranged outside one end of the sliding rod (1112); The gear set (1111) is composed of three gears, and the three gears are meshed with each other in pairs, the gear at the rear end is meshed with the second rack (1113), and the gear at the front end is fixedly arranged outside the rotating shaft (8); A second limiting groove (15) is formed on the side wall of the frame (1) close to the second rack (1113); One end of the second rack (1113) away from the gear set (1111) is arranged inside the second limiting groove (15); The pushing mechanism (112) comprises a fixing block (1121) fixedly arranged on the top of the second rack (1113); A push rod (1122) is rotatably provided on the back side of the mounting seat (3), the push rod (1122) corresponds to the position of the fixing block (1121), and a plurality of second springs (1123) are provided between one side of the push rod (1122) and one side of the mounting seat (3).

2. The orthopedic nail removal device according to claim 1, characterized in that: The limiting assembly (12) comprises an L-shaped rod (121), a plurality of third springs (122) are arranged between the top of the L-shaped rod (121) and the inner wall of the frame (1), a wedge block (123) is fixedly arranged at one end of the bottom of the L-shaped rod (121), and a clamping groove (124) is provided at one end of the second rack (1113).

3. The orthopedic nail removal device according to claim 1, characterized in that: The support frame (9) is composed of a mounting ring (91) and a side bracket (92); the mounting ring (91) and the side bracket (92) are fixedly connected by bolts; a placement groove is provided inside the side bracket (92) for placing the disk (10).

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